CN114879123A - Method and device for detecting error wiring of three-phase four-wire intelligent electric energy meter - Google Patents
Method and device for detecting error wiring of three-phase four-wire intelligent electric energy meterDownload PDFInfo
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及电能领域，尤其是涉及一种三相四线智能电能表错误接线的检测方法及装置。The invention relates to the field of electric energy, in particular to a method and device for detecting wrong wiring of a three-phase four-wire smart electric energy meter.
背景技术Background technique
随着我国经济的飞速发展，各行各业对电的需求越来越大，不同时间用电量不均衡的现象也日益严重，为提高用电效率，合理利用电力资源，推出了三相四线智能智能电能表，对用户的用电量进行统计并收费，然而，若电能表接线错误，会给电能统计带来极大的误差，因此三相四线智能电能表在工作过程中正确判断三相四线智能电能表是否存在接线错误成为亟待解决的问题。With the rapid development of my country's economy, the demand for electricity in all walks of life is increasing, and the phenomenon of unbalanced electricity consumption at different times is becoming more and more serious. The smart smart energy meter counts and charges the user's electricity consumption. However, if the wiring of the energy meter is wrong, it will bring great errors to the energy statistics. Therefore, the three-phase four-wire smart energy meter correctly judges the three Whether there is a wiring error in the phase four-wire smart energy meter has become an urgent problem to be solved.
目前，通常利用测试仪器在三相四线智能电能表端钮盒处测量相关数据来判断电能表是否存在接线错误。然而，这种判断方式需要工作人员将相位伏安表、用电检查仪和钳形万用表等测试仪器通过接线操作分别安装在三相四线智能电能表上，导致三相四线智能电能表错误接线的检测效率较低，与此同时，由于工作人员的技术水平参差不齐，会导致测试仪器安装错误，从而测量出错误的数据，进而导致三相四线智能电能表是否接线错误的检测准确度较低。At present, testing instruments are usually used to measure the relevant data at the terminal button box of the three-phase four-wire smart energy meter to determine whether there is a wiring error in the electric energy meter. However, this method of judgment requires staff to install test instruments such as phase voltammeters, power consumption checkers and clamp multimeters on the three-phase four-wire smart energy meter through wiring operations, resulting in errors in the three-phase four-wire smart energy meter. The detection efficiency of the wiring is low. At the same time, due to the uneven technical level of the staff, the installation of the test instrument will be wrong, and the wrong data will be measured, which will lead to the accurate detection of whether the three-phase four-wire smart energy meter is wired incorrectly. low degree.
发明内容SUMMARY OF THE INVENTION
本发明提供了一种三相四线智能电能表错误接线的检测方法及装置，主要在于能够提高三相四线智能电能表错误接线的检测效率和检测准确度。The present invention provides a method and device for detecting wrong connection of a three-phase four-wire smart electric energy meter, which mainly can improve the detection efficiency and detection accuracy of the wrong connection of a three-phase four-wire intelligent electric energy meter.
根据本发明的第一个方面，提供一种三相四线智能电能表错误接线的检测方法，包括：According to a first aspect of the present invention, a method for detecting wrong wiring of a three-phase four-wire smart energy meter is provided, including:
获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数；Obtain the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during operation;
基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；Based on the voltage and the current, determining the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter;
基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误。Based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, it is determined whether the three-phase four-wire smart energy meter is wired incorrectly.
根据本发明的第二个方面，提供一种三相四线智能电能表错误接线的检测装置，包括：According to a second aspect of the present invention, a device for detecting wrong wiring of a three-phase four-wire smart energy meter is provided, including:
获取单元，用于获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数；The acquisition unit is used to acquire the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during the working process;
确定单元，用于基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；a determining unit, configured to determine the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter based on the voltage and the current;
判定单元，用于基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误。A determination unit, configured to determine whether the three-phase four-wire smart energy meter is wired incorrectly based on the target power factor interval and the absolute value of the power factor corresponding to the power factor.
根据本发明的第三个方面，提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现以下步骤：According to a third aspect of the present invention, there is provided a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented:
获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数；Obtain the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during operation;
基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；Based on the voltage and the current, determining the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter;
基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误。Based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, it is determined whether the three-phase four-wire smart energy meter is wired incorrectly.
根据本发明的第四个方面，提供一种计算机设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现以下步骤：According to a fourth aspect of the present invention, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the following steps when executing the program:
获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数；Obtain the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during operation;
基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；Based on the voltage and the current, determining the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter;
基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误。Based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, it is determined whether the three-phase four-wire smart energy meter is wired incorrectly.
根据本发明提供的一种三相四线智能电能表错误接线的检测方法及装置，与目前利用测试仪器在三相四线智能电能表端钮盒处测量相关数据来判断电能表是否存在接线错误的方式相比，本发明通过获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数；并基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；最终基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误，由此通过三相四线智能电能表中显示的电流和电压，确定所述三相四线智能电能表所测电路中的目标功率因数区间，最终基于所述目标功率因数区间和所述电能表中显示的功率因数，判断所述三相四线智能电能表是否存在错误接线，避免了通过测量仪器测量所述电能表钮盒处的各项数据来判断所述三相四线智能电能表是否存在接线错误，提高了三相四线智能电能表错误接线的检测效率，与此同时，避免了由于工作人员测量出错误的数据，从而对三相四线智能电能表错误接线的判断出现错误的情况，进而提高了三相四线智能电能表错误接线的检测准确度，同时，还避免了工作人员现场在带电的计量回路接线操作时产生人身触电的危险，以及避免了电流互感器二次回路开路、电压回路短路、计量设备损坏、大面积停电事故等安全风险。According to the method and device for detecting wrong wiring of a three-phase four-wire smart electric energy meter provided by the present invention, it is different from the current use of a test instrument to measure the relevant data at the terminal button box of the three-phase four-wire smart electric energy meter to determine whether the electric energy meter has a wiring error. The present invention obtains the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during operation; and based on the voltage and the current, the three-phase four-wire smart energy meter is determined. The target power factor interval of the measuring circuit; finally, based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, it is determined whether the three-phase four-wire smart energy meter is wired incorrectly, and the three-phase four-wire smart energy meter is The current and voltage displayed in the electric energy meter, determine the target power factor interval in the circuit measured by the three-phase four-wire smart energy meter, and finally determine the target power factor interval based on the target power factor interval and the power factor displayed in the electric energy meter. Whether the three-phase four-wire smart electric energy meter has wrong wiring, avoids judging whether the three-phase four-wire smart electric energy meter has a wiring error by measuring various data at the button box of the electric energy meter by a measuring instrument, and improves the three-phase and four-wire smart electric energy meter. The detection efficiency of the wrong wiring of the four-wire smart energy meter, at the same time, avoids the wrong judgment of the wrong wiring of the three-phase four-wire smart energy meter due to the wrong data measured by the staff, thereby improving the three-phase four-wire smart energy meter. The detection accuracy of the wrong wiring of the line smart energy meter, and at the same time, it also avoids the danger of personal electric shock caused by the staff on-site wiring operation of the live metering circuit, and avoids the open circuit of the secondary circuit of the current transformer, the short circuit of the voltage circuit, and the measurement equipment Safety risks such as damage, large-scale power outages, etc.
附图说明Description of drawings
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:
图1示出了本发明实施例提供的一种三相四线智能电能表错误接线的检测方法流程图；1 shows a flowchart of a method for detecting wrong wiring of a three-phase four-wire smart energy meter provided by an embodiment of the present invention;
图2示出了本发明实施例提供的另一种三相四线智能电能表错误接线的检测方法流程图；2 shows a flowchart of another method for detecting wrong wiring of a three-phase four-wire smart energy meter provided by an embodiment of the present invention;
图3示出了本发明实施例提供的一种三相四线智能电能表错误接线的检测装置的结构示意图；3 shows a schematic structural diagram of a device for detecting wrong wiring of a three-phase four-wire smart energy meter provided by an embodiment of the present invention;
图4示出了本发明实施例提供的另一种三相四线智能电能表错误接线的检测装置的结构示意图；4 shows a schematic structural diagram of another device for detecting wrong wiring of a three-phase four-wire smart electric energy meter provided by an embodiment of the present invention;
图5示出了本发明实施例提供的一种计算机设备的实体结构示意图。FIG. 5 shows a schematic diagram of an entity structure of a computer device provided by an embodiment of the present invention.
具体实施方式Detailed ways
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict.
目前，利用测试仪器在三相四线智能电能表端钮盒处测量相关数据来判断电能表是否存在接线错误的方式，导致三相四线智能电能表错误接线的检测效率较低，与此同时，由于工作人员的技术水平参差不齐，会导致测试仪器安装错误，从而测量出错误的数据，进而导致三相四线智能电能表是否接线错误的检测准确度较低。At present, the method of using a test instrument to measure the relevant data at the terminal button box of the three-phase four-wire smart energy meter to determine whether there is a wiring error in the energy meter results in a low detection efficiency of the wrong wiring of the three-phase four-wire smart energy meter. , Due to the uneven technical level of the staff, the installation of the test instrument will be wrong, thus measuring the wrong data, which will lead to the low detection accuracy of whether the three-phase four-wire smart energy meter is wired incorrectly.
为了解决上述问题，本发明实施例提供了一种三相四线智能电能表错误接线的检测方法，如图1所示，所述方法包括：In order to solve the above problem, an embodiment of the present invention provides a method for detecting wrong wiring of a three-phase four-wire smart energy meter. As shown in FIG. 1 , the method includes:
101、获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数。101. Obtain the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during the working process.
其中，可以将所述三相四线智能电能表连接在电力系统发电上网输电线路、关口联络线路、变压器各侧供电线路、电力用户供电线路和配变台区等场合运行，所述电能表在工作过程中显示的电流和电压是所测电路的标准电流和标准电压。Wherein, the three-phase four-wire smart electric energy meter can be connected to the power generation grid transmission line of the power system, the gateway connection line, the power supply line of each side of the transformer, the power supply line of the power user, and the distribution transformer area and other occasions. The current and voltage displayed during operation are the standard current and standard voltage of the circuit under test.
对于本发明实施例，为了克服现有技术中三相四线智能电能表错误接线的检测效率低和检测准确度低的问题，本发明实施例通过电能表中显示的电流和电压，确定所述电能表所测电路中的目标功率因数区间，最终基于所述目标功率因数区间和所述电能表中显示的功率因数对应的功率因数绝对值，判断所述电能表是否存在错误接线，避免了通过测量仪器测量所述电能表钮盒处的各项数据来判断所述电能表是否存在接线错误，提高了电能表错误接线的检测效率，与此同时，避免了由于工作人员测量出错误的数据，从而对电能表错误接线的判断出现错误的情况，进而提高了电能表错误接线的检测准确度。本发明实施例主要应用于对电能表错误接线进行检测的场景，本发明实施例的执行主体为能够对电能表错误接线进行检测的装置或者设备，具体可以设置在客户端或者服务器一侧。For the embodiment of the present invention, in order to overcome the problems of low detection efficiency and low detection accuracy of the wrong wiring of the three-phase four-wire smart electric energy meter in the prior art, the embodiment of the present invention determines the current and voltage displayed in the electric energy meter to determine the The target power factor interval in the circuit measured by the electric energy meter, and finally based on the target power factor interval and the absolute value of the power factor corresponding to the power factor displayed in the electric energy meter, it is determined whether the electric energy meter has wrong wiring, which avoids passing the The measuring instrument measures various data at the button box of the electric energy meter to judge whether the electric energy meter has a wiring error, which improves the detection efficiency of the wrong wiring of the electric energy meter. Therefore, the judgment of the wrong connection of the electric energy meter is wrong, and the detection accuracy of the wrong connection of the electric energy meter is improved. The embodiment of the present invention is mainly applied to the scenario of detecting the wrong wiring of the electric energy meter. The execution body of the embodiment of the present invention is a device or device capable of detecting the wrong wiring of the electric energy meter, which can be specifically set on the client or server side.
具体地，将所述电能表连接在电力系统发电上网输电线路、关口联络线路、变压器各侧供电线路、电力用户供电线路、配变台区等场合运行，所述电能表在上述其中任何一个场合运行时，电能表的显示屏幕上会实时显示所测电路的标准电压和标准电流，同时所述电能表上还会显示功率因数，若所述电能表为三相四线智能电能表，则所述三相四线电能表中会显示三相电流，包括A相电流、B相电流和C相电流，同时会显示三相电压，包括A相电压、B相电压和C相电压，与此同时，还会显示三相功率因数，包括A相功率因数、B相功率因数和C相功率因数，若所述电能表运行在感性负载场合，则电能表中的电压、电流和功率因数显示在第一象限或第三象限，若所述电能表运行在容性负载场合，则电能表中的电压、电流和功率因数显示在第二象限或第四象限，功率因数是电力计量的重要依据，用电场所有时会将电能表中的线路错接来避免少交电费的情况，而通过电能表上显示的功率因数，可以有效判断电能表接线是否存在错误，进而避免电力用户等少交或漏交电费的情况。Specifically, the electric energy meter is connected to the power generation grid transmission line of the power system, the gateway connection line, the power supply line of each side of the transformer, the power supply line of the power user, the distribution transformer area and other occasions, and the electric energy meter is operated in any of the above occasions During operation, the standard voltage and standard current of the measured circuit will be displayed on the display screen of the electric energy meter in real time, and the power factor will also be displayed on the electric energy meter. If the electric energy meter is a three-phase four-wire smart energy meter, the The three-phase four-wire energy meter will display three-phase current, including A-phase current, B-phase current and C-phase current, and three-phase voltage, including A-phase voltage, B-phase voltage and C-phase voltage, at the same time. , it will also display the three-phase power factor, including the A-phase power factor, B-phase power factor and C-phase power factor. If the electric energy meter operates in an inductive load situation, the voltage, current and power factor in the electric energy meter are displayed in the first One quadrant or the third quadrant, if the electric energy meter operates in the capacitive load situation, the voltage, current and power factor in the electric energy meter are displayed in the second or fourth quadrant. The power factor is an important basis for electric power measurement. When the electric field is owned, the lines in the electric energy meter will be wrongly connected to avoid the situation of underpaying electricity bills, and through the power factor displayed on the electric energy meter, it can be effectively judged whether there is an error in the wiring of the electric energy meter, so as to avoid underpayment or omission of electricity users, etc. electricity bills.
102、基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间。102. Based on the voltage and the current, determine a target power factor interval of the circuit measured by the three-phase four-wire smart energy meter.
对于本发明实施例，首先调取所述电能表在工作过程中的电流和电压，并利用所述电流和所述电压，计算所述电能表所测电路的功率因数角，并基于所述功率因数角，确定所述电能表所测电路的目标功率因数区间，例如，通过电压和电流计算得到所述电能表所测电路的功率因数角为25°，则25°对应的目标功率因数区间为0.866-1，最终基于所述目标功率因数区间和所述电能表显示的功率因数，判定所述电能表接线是否错误，从而提高了电能表错误接线的检测效率，与此同时，避免了工作人员现场在带电的计量回路接线操作时产生人身触电的情况，以及电流互感器二次回路开路、电压回路短路、计量设备损坏、大面积停电事故等安全风险，还减少了将测量仪器接在电能表上消耗的时间。For the embodiment of the present invention, the current and voltage of the electric energy meter during operation are firstly retrieved, and the current and the voltage are used to calculate the power factor angle of the circuit measured by the electric energy meter, and based on the power factor angle, determine the target power factor interval of the circuit measured by the electric energy meter, for example, the power factor angle of the circuit measured by the electric energy meter is obtained by calculating the voltage and current to be 25°, then the target power factor interval corresponding to 25° is 0.866-1, and finally based on the target power factor interval and the power factor displayed by the electric energy meter, determine whether the electric energy meter is connected incorrectly, thereby improving the detection efficiency of the wrong connection of the electric energy meter, and at the same time, it avoids the need for staff Personal electric shock occurs during the wiring operation of the live metering circuit, as well as safety risks such as open circuit of the secondary circuit of the current transformer, short circuit of the voltage circuit, damage to the metering equipment, and large-scale power outage accidents. time spent on.
103、基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误。103. Based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, determine whether the three-phase four-wire smart energy meter is wired incorrectly.
对于本发明实施例，在确定所述电能表所测电路的目标功率因数区间后，判断所述电能表中显示的功率因数是否在目标功率因数区间内，若在所述目标功率因数区间内，则确定所述电能表接线正确，若不在所述目标功率因数区间内，则确定所述电能表接线错误，例如，若电能表中显示的功率因数为0.9，计算得到的目标功率因数区间为0.866-1，因为功率因数0.9在0.866-1之间，所以确定所述电能表接线正确，若电能表中显示的功率因数为-0.82，因为-0.82的绝对值不在0.866-1之间，所以确定所述电能表接线错误，若电能表中显示的功率因数为-0.07，因为-0.07的绝对值不在0.866-1之间，所以确定所述电能表接线错误，与此同时，若所述功率因数为感性功率因数，则所述功率因数显示在第一象限或第三象限中，则需要判断功率因数的绝对值是否在标准功率因数对应的取值范围内，若所述功率因数为容性功率因数，则所述功率因数显示在第二象限或第四象限中，则需要判断功率因数的绝对值是否在标准功率因数对应的取值范围内，由此通过电能表中显示的电流和电压，确定所述电能表所测电路中的目标功率因数区间，最终基于所述目标功率因数区间和所述电能表中显示的功率因数对应的绝对值，判断所述电能表是否存在错误接线，避免了通过测量仪器测量所述电能表钮盒处的各项数据来判断所述电能表是否存在接线错误，提高了电能表错误接线的检测效率，与此同时，避免了由于工作人员测量出错误的数据，从而对电能表错误接线的判断出现错误的情况，进而提高了电能表错误接线的检测准确度。For the embodiment of the present invention, after determining the target power factor interval of the circuit measured by the electric energy meter, it is determined whether the power factor displayed in the electric energy meter is within the target power factor interval, and if it is within the target power factor interval, It is determined that the electric energy meter is connected correctly. If it is not within the target power factor interval, it is determined that the electric energy meter is wired incorrectly. For example, if the power factor displayed in the electric energy meter is 0.9, the calculated target power factor interval is 0.866. -1, because the power factor 0.9 is between 0.866-1, it is determined that the electric energy meter is wired correctly, if the power factor displayed in the electric energy meter is -0.82, because the absolute value of -0.82 is not between 0.866-1, so determine The connection of the electric energy meter is wrong. If the power factor displayed in the electric energy meter is -0.07, because the absolute value of -0.07 is not between 0.866-1, it is determined that the connection of the electric energy meter is wrong. At the same time, if the power factor It is an inductive power factor, and the power factor is displayed in the first quadrant or the third quadrant, and it is necessary to judge whether the absolute value of the power factor is within the value range corresponding to the standard power factor. If the power factor is capacitive power If the power factor is displayed in the second or fourth quadrant, it is necessary to judge whether the absolute value of the power factor is within the value range corresponding to the standard power factor. Determine the target power factor interval in the circuit measured by the electric energy meter, and finally determine whether the electric energy meter has wrong wiring based on the absolute value of the target power factor interval and the power factor displayed in the electric energy meter. By measuring various data at the button box of the electric energy meter to determine whether the electric energy meter has a wiring error, the detection efficiency of the wrong wiring of the electric energy meter is improved, and at the same time, it is avoided that the staff measures the wrong data. , so that the judgment of the wrong connection of the electric energy meter is wrong, and the detection accuracy of the wrong connection of the electric energy meter is improved.
根据本发明提供的一种三相四线智能电能表错误接线的检测方法，与目前利用测试仪器在电能表端钮盒处测量相关数据来判断电能表是否存在接线错误的方式相比，本发明通过获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数；并基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；最终基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误，由此通过三相四线智能电能表中显示的电流和电压，确定所述三相四线智能电能表所测电路中的目标功率因数区间，最终基于所述目标功率因数区间和所述电能表中显示的功率因数，判断所述三相四线智能电能表是否存在错误接线，避免了通过测量仪器测量所述电能表钮盒处的各项数据来判断所述电能表是否存在接线错误，提高了三相四线智能电能表错误接线的检测效率，与此同时，避免了由于工作人员测量出错误的数据，从而对电能表错误接线的判断出现错误的情况，进而提高了三相四线智能电能表错误接线的检测准确度。According to a method for detecting wrong wiring of a three-phase four-wire smart electric energy meter provided by the present invention, compared with the current method of using a test instrument to measure the relevant data at the terminal button box of the electric energy meter to determine whether the electric energy meter has a wrong wiring, the present invention By acquiring the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during operation; and based on the voltage and the current, determine the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter ; Finally, based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, determine whether the three-phase four-wire smart energy meter is wired incorrectly, thereby passing the current and voltage, determine the target power factor interval in the circuit measured by the three-phase four-wire smart energy meter, and finally determine the three-phase four-wire smart energy based on the target power factor interval and the power factor displayed in the energy meter Whether the meter is connected incorrectly, avoids judging whether the power meter has a wiring error by measuring various data at the button box of the power meter by a measuring instrument, improves the detection efficiency of the wrong wiring of the three-phase four-wire smart power meter, and At the same time, it avoids the situation of wrongly judging the wrong connection of the electric energy meter due to the wrong data measured by the staff, thereby improving the detection accuracy of the wrong connection of the three-phase four-wire smart electric energy meter.
进一步的，为了更好的说明上述对三相四线智能电能表错误接线进行检测的过程，作为对上述实施例的细化和扩展，本发明实施例提供了另一种三相四线智能电能表错误接线的检测方法，如图2所示，所述方法包括：Further, in order to better illustrate the above process of detecting the wrong wiring of a three-phase four-wire smart energy meter, as a refinement and expansion of the above embodiment, the embodiment of the present invention provides another three-phase four-wire smart energy meter. The detection method of the wrong wiring of the meter, as shown in Figure 2, the method includes:
201、获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数。201. Obtain the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during the working process.
对于本发明实施例，为了判断所述三相四线智能电能表是否接线错误，首先需要调取电能表中显示的电压、电流和所述功率因数，基于此，步骤201具体包括：判断所述三相四线智能电能表所测电路是否属于感性负载电路或者容性负载电路；若所述三相四线智能电能表所测电路属于感性负载电路，则获取所述三相四线智能电能表在工作过程中第一象限或第三象限中显示的电压、电流和功率因数；若所述三相四线智能电能表所测电路属于容性负载电路，则获取所述三相四线智能电能表在工作过程中第二象限或第四象限中显示的电压、电流和功率因数。For the embodiment of the present invention, in order to determine whether the three-phase four-wire smart electric energy meter is wired incorrectly, it is first necessary to retrieve the voltage, current and the power factor displayed in the electric energy meter. Based on this, step 201 specifically includes: judging the Whether the circuit measured by the three-phase four-wire smart energy meter belongs to an inductive load circuit or a capacitive load circuit; if the circuit measured by the three-phase four-wire smart energy meter belongs to an inductive load circuit, obtain the three-phase four-wire smart energy meter. The voltage, current and power factor displayed in the first quadrant or the third quadrant during the working process; if the circuit measured by the three-phase four-wire smart energy meter belongs to a capacitive load circuit, the three-phase four-wire smart energy The voltage, current and power factor displayed by the meter in the second or fourth quadrant during operation.
具体地，若所述三相四线智能电能表所测电路为感性负载电路，则调取电能表在工作过程中第一象限或第三象限中显示的电压、电流和功率因数，若所述电能表所测电路为容性负载电路，则调取电能表在工作过程中第二象限或第四象限中显示的电压、电流和功率因数，若所述电能表为三相四线电能表，则调取所述电能表在工作过程中显示的三相电压、三相电流和三相功率因数，例如，三相四线电能表在工作过程中屏幕上显示的A相电压为237.6V、B相电压为237.5V、C相电压为239.5V，A相电流为0.61A、B相电流为0.65A、C相电流为0.62A，A相功率因数为0.65、B相功率因数为-0.98、C相功率因数为-0.33，则为了判断所述三相四线电能表的接线是否存在错误，则需要调取电能表中显示的全部电压、全部电流和全部功率因数，并确定各个电压和其对应的电流之间的相位差，并将所述相位差确定为所述电能表所测电路的各个功率因数角，之后基于所述各个功率因数角，确定所述电能表所测电路的各个目标功率因数区间，最终基于电能表中显示的各相位的目标功率因数区间及其对应相位的功率因数，判定所述电能表接线是否存在错误。Specifically, if the circuit measured by the three-phase four-wire smart electric energy meter is an inductive load circuit, the voltage, current and power factor displayed in the first quadrant or the third quadrant of the electric energy meter during operation are retrieved. If the circuit measured by the electric energy meter is a capacitive load circuit, the voltage, current and power factor displayed in the second quadrant or the fourth quadrant of the electric energy meter during operation are retrieved. If the electric energy meter is a three-phase four-wire electric energy meter, Then retrieve the three-phase voltage, three-phase current and three-phase power factor displayed by the electric energy meter during the working process. For example, the A-phase voltage displayed on the screen of the three-phase four-wire electric energy meter during operation is 237.6V, Phase voltage is 237.5V, C-phase voltage is 239.5V, A-phase current is 0.61A, B-phase current is 0.65A, C-phase current is 0.62A, A-phase power factor is 0.65, B-phase power factor is -0.98, C-phase current is 0.62A If the phase power factor is -0.33, in order to judge whether the wiring of the three-phase four-wire electric energy meter is wrong, it is necessary to retrieve all the voltages, all currents and all the power factors displayed in the electric energy meter, and determine each voltage and its corresponding The phase difference between the currents measured by the electric energy meter is determined as each power factor angle of the circuit measured by the electric energy meter, and then each target power of the circuit measured by the electric energy meter is determined based on the various power factor angles. factor interval, and finally, based on the target power factor interval of each phase displayed in the energy meter and the power factor of the corresponding phase, it is determined whether there is an error in the wiring of the electric energy meter.
202、计算所述电压和所述电流之间的相位差，并将所述相位差确定为所述三相四线智能电能表所测电路的功率因数角。202. Calculate the phase difference between the voltage and the current, and determine the phase difference as the power factor angle of the circuit measured by the three-phase four-wire smart energy meter.
对于本发明实施例，首先调取所述电能表在工作过程中的电流和电压，并利用所述电流和所述电压，计算所述电能表所测电路的功率因数角，具体计算功率因数角的公式如下：For the embodiment of the present invention, the current and voltage of the electric energy meter during operation are firstly retrieved, and the current and the voltage are used to calculate the power factor angle of the circuit measured by the electric energy meter, and the power factor angle is specifically calculated. The formula is as follows:
Δφ＝(wt+φu)-(wt+φi)Δφ=(wt+φu)-(wt+φi)
其中，△Ф表示相位差，即功率因数角，(wt+Фu)表示电压相位，(wt+Фi)表示电流相位，w是常数相位因子，t表示顺时时间，Ф表示初相角，u表示电压，i表示电流，因此利用上述公式可以计算出所述电能表所测电路的功率因数角，进而根据所述功率因数角，确定所述电能表所测电路的目标功率因数区间，最终基于所述电能表中显示的功率因数对应的绝对值和所述目标功率因数区间，判断所述电能表的接线是否存在错误，例如，基于所述电能表中显示的电压和所述电流，利用上述公式计算得到所述电压和所述电流之间的相位差为65°，并将所述65°确定为所述电能表所测电路的功率因数角。Among them, △Ф represents the phase difference, that is, the power factor angle, (wt+Фu) represents the voltage phase, (wt+Фi) represents the current phase, w is a constant phase factor, t represents the clockwise time, Ф represents the initial phase angle, u represents voltage and i represents current. Therefore, the power factor angle of the circuit measured by the electric energy meter can be calculated using the above formula, and then the target power factor interval of the circuit measured by the electric energy meter can be determined according to the power factor angle, and finally based on The absolute value corresponding to the power factor displayed in the electric energy meter and the target power factor interval, to determine whether there is an error in the wiring of the electric energy meter, for example, based on the voltage and the current displayed in the electric energy meter, using the above The formula calculates that the phase difference between the voltage and the current is 65°, and the 65° is determined as the power factor angle of the circuit measured by the electric energy meter.
203、基于所述功率因数角，确定所述三相四线智能电能表所测电路的目标功率因数区间。203. Based on the power factor angle, determine a target power factor interval of the circuit measured by the three-phase four-wire smart energy meter.
对于本发明实施例，在基于所述电能表中显示的电压和电流，计算得到所述电能表所测电路的功率因数角后，为了判断所述电能表是否存在错误接线，需要基于所述功率因数角，确定所述电能表所测电路中真正的目标功率因数区间，基于此，步骤203具体包括：从多个角度区间中确定所述功率因数角所属的目标角度区间；基于所述目标角度区间，确定所述三相四线智能电能表所测电路的目标功率因数区间。For the embodiment of the present invention, after calculating the power factor angle of the circuit measured by the electric energy meter based on the voltage and current displayed in the electric energy meter, in order to determine whether the electric energy factor angle, and determine the real target power factor interval in the circuit measured by the electric energy meter. Based on this, step 203 specifically includes: determining the target angle interval to which the power factor angle belongs from a plurality of angle intervals; based on the target angle interval, to determine the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter.
其中，所述多个角度区间包括第一角度区间、第二角度区间和第三角度区间，所述第一角度区间表示从第一预设角度到第二预设角度之间，所述第二角度区间表示从第三预设角度到第一预设角度之间，所述第三角度区间表示从第四预设角度到第三预设角度之间。Wherein, the plurality of angle intervals include a first angle interval, a second angle interval and a third angle interval, and the first angle interval represents the interval from the first preset angle to the second preset angle, and the second angle interval The angle interval represents the interval from the third preset angle to the first preset angle, and the third angle interval represents the interval from the fourth preset angle to the third preset angle.
对于本发明实施例，在基于所述电压和所述电流，确定所述电能表所测电路的功率因数角后，为了确定所述电能表所测电路中标准功率因数对应的取值范围，即目标功率因数区间，首先需要判断所述功率因数角是否大于第一预设角度，且小于第二预设角度，若所述功率因数角大于所述第一预设角度，且小于所述第二预设角度，则确定所述目标角度区间为第一角度区间，与此同时，若所述功率因数角小于所述第一预设角度，则还需要判断所述功率因数角是否大于所述第三预设角度，若所述功率因数角大于第三预设角度，且小于所述第一预设角度，则确定所述目标角度区间为第二角度区间，与此同时，若所述功率因数角小于所述第三预设角度，则还需要判断所述功率因数角是否大于所述第四预设角度，若所述功率因数角大于所述第四预设角度，且小于所述第三预设角度，则确定所述目标角度区间为第三角度区间，最终基于所述第一角度区间，或第二角度区间，或第三角度区间，确定所述电能表所测电路的目标功率因数区间，其中，基于所述第一角度区间，或第二角度区间，或第三角度区间，确定所述电能表所测电路的目标功率因数区间的方法为：确定所述目标角度区间对应的余弦值区间；将所述余弦值区间确定为所述三相四线智能电能表所测电路的目标功率因数区间。For the embodiment of the present invention, after the power factor angle of the circuit measured by the electric energy meter is determined based on the voltage and the current, in order to determine the value range corresponding to the standard power factor in the circuit measured by the electric energy meter, that is, For the target power factor interval, it is first necessary to determine whether the power factor angle is greater than the first preset angle and less than the second preset angle. If the power factor angle is greater than the first preset angle and less than the second preset angle The preset angle is determined, the target angle interval is determined to be the first angle interval, and at the same time, if the power factor angle is smaller than the first preset angle, it is also necessary to determine whether the power factor angle is greater than the first angle. Three preset angles, if the power factor angle is greater than the third preset angle and less than the first preset angle, the target angle interval is determined to be the second angle interval, and at the same time, if the power factor angle is angle is smaller than the third preset angle, it is also necessary to judge whether the power factor angle is greater than the fourth preset angle, if the power factor angle is greater than the fourth preset angle and smaller than the third preset angle The preset angle is determined, the target angle interval is determined as the third angle interval, and finally, the target power factor of the circuit measured by the electric energy meter is determined based on the first angle interval, or the second angle interval, or the third angle interval. interval, wherein, based on the first angle interval, or the second angle interval, or the third angle interval, the method for determining the target power factor interval of the circuit measured by the electric energy meter is: determining the cosine corresponding to the target angle interval value interval; the cosine value interval is determined as the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter.
具体地，若所述功率因数角度在所述第一预设角度和第二预设角度之间，则分别计算所述第一预设角度对应的第一余弦值和第二预设角度对应的第二余弦值，并将所述第二余弦值确定为所述电能表所测电路中目标功率因数区间对应的下限值，以及将所述第一余弦值确定为所述电能表所测电路中目标功率因数区间对应的上限值，或者，若所述功率因数角在所述第三预设角度和第一预设角度之间，则计算所述第三预设角度对应的第三余弦值，并将所述第一余弦值确定为所述电能表所测电路中目标功率因数区间对应的下限值，以及将所述第三余弦值确定为所述电能表所测电路中目标功率因数区间对应的上限值，或者，若所述功率因数角在所述第四预设角度和第三预设角度之间，则计算所述第四预设角度对应的第四余弦值，并将所述第三余弦值确定为所述电能表所测电路中目标功率因数区间对应的下限值，以及将所述第四余弦值确定为所述电能表所测电路中目标功率因数区间对应的上限值。Specifically, if the power factor angle is between the first preset angle and the second preset angle, the first cosine value corresponding to the first preset angle and the corresponding second preset angle are calculated respectively. and determine the second cosine value as the lower limit value corresponding to the target power factor interval in the circuit measured by the electric energy meter, and determine the first cosine value as the electric energy The upper limit value corresponding to the target power factor interval in the measured circuit, or, if the power factor angle is between the third preset angle and the first preset angle, calculate the corresponding value of the third preset angle and determine the first cosine value as the lower limit value corresponding to the target power factor interval in the circuit measured by the electric energy meter, and determine the third cosine value as the electric energy The upper limit value corresponding to the target power factor interval in the measured circuit, or, if the power factor angle is between the fourth preset angle and the third preset angle, calculate the corresponding value of the fourth preset angle The fourth cosine value is determined as the lower limit value corresponding to the target power factor interval in the circuit measured by the electric energy meter, and the fourth cosine value is determined as the electric energy The upper limit value corresponding to the target power factor interval in the circuit under test.
例如，对于本发明实施例，第一预设角度为60°、第二预设角度为90°、第三预设角度为30°、第四预设角度为0°，若基于所述三相四线智能电能表显示的电压和电流，计算得到电能表所测电路中的功率因数角为75°，因为所述功率因数角在所述第一预设角度60°和所述第二预设角度90°之间，则计算所述第一预设角度对应的第一余弦值为0.5，以及计算所述第二预设角度对应的第二余弦值为0，因此确定所述电能表所测电路中目标功率因数区间对应的下限值0，上限值为0.5，若基于所述电能表显示的电压和电流，计算得到电能表所测电路中的功率因数角为13°，因为所述功率因数角在所述第四预设角度0°和所述第三预设角度30°之间，则计算所述第三预设角度对应的第三余弦值为0.866，以及计算所述第四预设角度对应的第四余弦值为1，因此确定所述电能表所测电路中目标功率因数区间对应的下限值为0.866，上限值为1，即本发明实施例中，若电能表所测电路的功率因数角在第一预设角度和第二预设角度之间，则其对应的目标功率因数区间应为第二余弦值和第一余弦值之间，若电能表所测电路的功率因数角在第三预设角度和第一预设角度之间，则其对应的目标功率因数区间应为第一余弦值和第三余弦值之间，若电能表所测电路的功率因数角在第四预设角度和第三预设角度之间，则其对应的目标功率因数区间应为第三余弦值和第四余弦值之间。For example, in this embodiment of the present invention, the first preset angle is 60°, the second preset angle is 90°, the third preset angle is 30°, and the fourth preset angle is 0°. From the voltage and current displayed by the four-wire smart energy meter, the power factor angle in the circuit measured by the energy meter is calculated to be 75°, because the power factor angle is at the first preset angle of 60° and the second preset angle. If the angle is between 90°, the first cosine value corresponding to the first preset angle is calculated to be 0.5, and the second cosine value corresponding to the second preset angle is calculated to be 0, so the electric energy meter is determined. The lower limit value corresponding to the target power factor interval in the measured circuit is 0, and the upper limit value is 0.5. If based on the voltage and current displayed by the electric energy meter, the power factor angle in the circuit measured by the electric energy meter is calculated to be 13°, because The power factor angle is between the fourth preset angle of 0° and the third preset angle of 30°, then the third cosine value corresponding to the third preset angle is calculated to be 0.866, and the calculated The fourth cosine value corresponding to the fourth preset angle is 1, so it is determined that the lower limit value corresponding to the target power factor interval in the circuit measured by the electric energy meter is 0.866, and the upper limit value is 1, that is, in the embodiment of the present invention , if the power factor angle of the circuit measured by the electric energy meter is between the first preset angle and the second preset angle, the corresponding target power factor interval should be between the second cosine value and the first cosine value, If the power factor angle of the circuit measured by the electric energy meter is between the third preset angle and the first preset angle, the corresponding target power factor interval should be between the first cosine value and the third cosine value. If the power factor angle of the circuit measured by the electric energy meter is between the fourth preset angle and the third preset angle, the corresponding target power factor interval should be between the third cosine value and the fourth cosine value.
与此同时，若所述电能表为三相四线电能表，则需要获取三相四线电能表中各个相位对应的电压、电流和功率因数，并基于所述各个相位对应的电压、电流，确定所述三相四线电能表所测电路中各个相位共同对应的目标功率因数区间，最终基于所述目标功率因数区间及其各个相位的功率因数绝对值，判定所述电能表接线是否错误，如获取到三相四线电能表中A相位的第一电压、第一电流和第一功率因数，B相位的第二电压、第二电流和第二功率因数，C相位的第三电压、第三电流和第三功率因数，并利用A相位的第一电压和第一电流，计算A相位的第一功率因数角，同时利用B相位的第二电压和第二电流，计算B相位的第二功率因数角，与此同时，利用C相位的第三电压和第三电流，计算C相位的第三功率因数角，并基于所述第一功率因数角，确定所述三相四线电能表所测电路中第一目标功率因数区间，同时基于所述第二功率因数角，确定所述三相四线电能表所测电路中的第二目标功率因数区间，与此同时，基于所述第三功率因数角，确定所述三相四线电能表所测电路中的第三目标功率因数区间，其中，所述第一目标功率因数区间和所述第二目标功率因数区间，以及所述第三目标功率因数区间是相等的，最终基于所述第一功率因数、第二功率因数和第三功率因数及其共同对应的目标功率因数区间，判定所述电能表的接线是否存在错误。At the same time, if the electric energy meter is a three-phase four-wire electric energy meter, it is necessary to obtain the voltage, current and power factor corresponding to each phase in the three-phase four-wire electric energy meter, and based on the voltage and current corresponding to each phase, Determine the target power factor interval corresponding to each phase in the circuit measured by the three-phase four-wire electric energy meter, and finally determine whether the electric energy meter is wired incorrectly based on the target power factor interval and the absolute value of the power factor of each phase, For example, the first voltage, the first current and the first power factor of the A phase, the second voltage, the second current and the second power factor of the B phase, the third voltage, the first power factor of the C phase, and the Three currents and a third power factor, and use the first voltage and first current of the A phase to calculate the first power factor angle of the A phase, and use the second voltage and the second current of the B phase to calculate the second phase of the B phase. At the same time, the third power factor angle of the C phase is calculated by using the third voltage and the third current of the C phase, and based on the first power factor angle, the three-phase four-wire electric energy meter is determined. The first target power factor interval in the measured circuit is determined, and based on the second power factor angle, the second target power factor interval in the circuit measured by the three-phase four-wire electric energy meter is determined. At the same time, based on the third target power factor interval Power factor angle, to determine the third target power factor interval in the circuit measured by the three-phase four-wire electric energy meter, wherein the first target power factor interval and the second target power factor interval, and the third target power factor interval The target power factor intervals are equal. Finally, based on the first power factor, the second power factor, and the third power factor and their jointly corresponding target power factor intervals, it is determined whether there is an error in the wiring of the electric energy meter.
204、基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误。204. Based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, determine whether the three-phase four-wire smart energy meter is wired incorrectly.
对于本发明实施例，在获取电能表所测电路中目标功率因数区间后，需要基于所述目标功率因数区间和所述电能表中显示的功率因数，判定所述电能表接线是否存在错误，基于此，步骤204具体包括：判断所述功率因数绝对值是否在所述目标功率因数区间内；若所述功率因数绝对值不在所述目标功率因数区间内，则确定所述三相四线智能电能表接线错误。For the embodiment of the present invention, after obtaining the target power factor interval in the circuit measured by the electric energy meter, it is necessary to determine whether there is an error in the wiring of the electric energy meter based on the target power factor interval and the power factor displayed in the electric energy meter. Therefore, step 204 specifically includes: judging whether the absolute value of the power factor is within the target power factor interval; if the absolute value of the power factor is not within the target power factor interval, determining the three-phase four-wire smart energy Table wiring error.
具体地，在确定电能表所测电路中的目标功率因数后，为了判断所述电能表是否接线错误，需要判断所述电能表中显示的功率功率因数是否在所述目标功率因数区间之内，若功率因数不在所述目标功率因数区间之内，则确定所述电能表接线错误，进一步地，在判断所述电能表中显示的功率功率因数是否在所述目标功率因数区间之内之后，所述方法还包括：若所述功率因数绝对值在所述目标功率因数区间内，则确定所述电能表接线正确。Specifically, after determining the target power factor in the circuit measured by the electric energy meter, in order to determine whether the electric energy meter is wired incorrectly, it is necessary to determine whether the power factor displayed in the electric energy meter is within the target power factor interval, If the power factor is not within the target power factor interval, it is determined that the electric energy meter is wired incorrectly, and further, after judging whether the power factor displayed in the electric energy meter is within the target power factor interval, the The method further includes: if the absolute value of the power factor is within the target power factor interval, determining that the electric energy meter is wired correctly.
具体地，若所述功率因数在所述目标功率因数区间内，则确定所述三相四线智能电能表接线正确。Specifically, if the power factor is within the target power factor interval, it is determined that the three-phase four-wire smart energy meter is correctly wired.
例如，若所述功率因数角在第一预设角度和第二预设角度之间，则判断所述功率因数是否在第二余弦值和第一余弦值之间，若所述功率因数不在所述第二余弦值和第一余弦值之间，则确定所述电能表接线错误，若所述功率因数在所述第二余弦值和第一余弦值之间，则确定所述电能表接线正确，若所述功率因数角在第三预设角度和第一预设角度之间，则判断所述功率因数是否在第一余弦值和第三余弦值之间，若所述功率因数不在所述第一余弦值和第三余弦值之间，则确定所述电能表接线错误，若所述功率因数在所述第一余弦值和第三余弦值之间，则确定所述电能表接线正确，若所述功率因数角在第四预设角度和第三预设角度之间，则判断所述功率因数是否在第三余弦值和第四余弦值之间，若所述功率因数不在第三余弦值和第四余弦值之间，则确定所述电能表接线错误，若所述功率因数在第三余弦值和第四余弦值之间，则确定所述电能表接线正确。For example, if the power factor angle is between the first preset angle and the second preset angle, it is determined whether the power factor is between the second cosine value and the first cosine value, if the power factor If it is not between the second cosine value and the first cosine value, it is determined that the electric energy meter is wired incorrectly, and if the power factor is between the second cosine value and the first cosine value, it is determined that The electric energy meter is correctly wired, and if the power factor angle is between the third preset angle and the first preset angle, it is determined whether the power factor is between the first cosine value and the third cosine value, If the power factor is not between the first cosine value and the third cosine value, it is determined that the electric energy meter is wired incorrectly, and if the power factor is between the first cosine value and the third cosine value If the power factor angle is between the fourth preset angle and the third preset angle, then determine whether the power factor is between the third cosine value and the fourth cosine value. between the sine values, if the power factor is not between the third cosine value and the fourth cosine value, it is determined that the electric energy meter is wired incorrectly, if the power factor is between the third cosine value and the fourth cosine value between the values, it is determined that the electric energy meter is wired correctly.
进一步地，若所述电能表为三相四线电能表，则需要确定各相共同对应的目标功率因数区间，并基于所述目标功率因数区间和各个相位的功率因数绝对值，判断所述电能表是否接线错误，例如，各相共同对应的负载功率因数角为23°，各项标准功率因数应为0.92，因此目标功率因数区间为0.866-1之间，获取电能表在工作过程中A相、B相和C相显示的功率因数分别为0.80、-0.12和0.92，由此可知，C相的功率因数0.92在0.866-1之间，但是A相功率因数0.80和B相功率因数-0.12的绝对值均不在0.866-1之间，且A相功率因数0.80为正值，所以确定所述电能表接线错误。Further, if the electric energy meter is a three-phase four-wire electric energy meter, it is necessary to determine the target power factor interval corresponding to each phase, and determine the electric energy based on the target power factor interval and the absolute value of the power factor of each phase. Whether the meter is wired incorrectly. For example, the load power factor angle corresponding to each phase is 23°, and the standard power factor should be 0.92, so the target power factor range is between 0.866-1. Obtain the A phase of the electric energy meter during operation. , Phase B and Phase C display power factors of 0.80, -0.12 and 0.92, respectively. It can be seen that the power factor of Phase C is between 0.92 and 0.866-1, but the power factor of Phase A is 0.80 and the power factor of Phase B is -0.12. The absolute value is not between 0.866-1, and the A-phase power factor of 0.80 is a positive value, so it is determined that the electric energy meter is wired incorrectly.
需要说明的是，三相四线电能表任意一个相位的功率因数不在目标功率因数区间之内，则可以确定所述电能表接线错误，同时，可以将0-0.5之间的功率因数绝对值标记为小，0.5-0.866之间的功率因数绝对值标记为中，0.866-1之间的功率因数绝对值标记为大，若所述三相四线电能表运行于Ⅰ、Ⅱ、Ⅲ、Ⅳ象限时，其各项对应的功率因数绝对值对应的规律不是“大大大”、“中中中”、“小小小”三种中的某一种，则可以确定电能表接线错误。It should be noted that if the power factor of any phase of the three-phase four-wire electric energy meter is not within the target power factor range, it can be determined that the electric energy meter is wired incorrectly. At the same time, the absolute value of the power factor between 0 and 0.5 can be marked. is small, the absolute value of the power factor between 0.5-0.866 is marked as medium, and the absolute value of the power factor between 0.866-1 is marked as large, if the three-phase four-wire electric energy meter operates in the phases I, II, III, IV If the corresponding law of the absolute value of the power factor of each item is not one of the three types of “Da Da Da”, “Medium Zhongzhong” and “Xiao Xiaoxiao”, it can be determined that the electric energy meter is connected incorrectly.
例如，以30°为变化区间，感性负载运行于第Ⅰ象限或第Ⅲ象限，若感性负载功率因数角取值范围为0°-30°，则三个元件(三相)对应的目标功率因数区间为0.866-1，其中，感性负载Ⅰ象限不取绝对值，Ⅲ象限功率因数需取绝对值，当电能表工作时，三个元件(三相)显示的功率因数绝对值为“大大大”，则确定所述电能表接线正确，若三个元件显示的功率因数绝对值为“大中小”、“大小中”、“中中中”或“小小小”等，则确定所述电能表接线错误，若感性负载功率因数角取值范围为30°-60°，则三个元件目标功率因数区间均为0.5-0.866，其中，感性负载Ⅰ象限不取绝对值，Ⅲ象限功率因数需取绝对值，当电能表工作时，三个元件显示的功率因数绝对值为“中中中”，则确定所述电能表接线正确，若三个元件显示的功率因数绝对值为“大中小”、“大小中”、“大大大”或“小小小”等，则确定所述电能表接线错误，若感性负载功率因数角取值范围为60°-90°，则三个元件目标功率因数区间为0-0.5，其中，感性负载Ⅰ象限不取绝对值，Ⅲ象限功率因数需取绝对值，当电能表工作时，三个元件显示的功率因数绝对值为“小小小”，则确定所述电能表接线正确，若三个元件显示的功率因数绝对值为“大中小”、“大小中”、“大大大”或“中中中”等，则确定所述电能表接线错误。For example, taking 30° as the change interval, the inductive load operates in the first or third quadrant, if the value range of the inductive load power factor angle is 0°-30°, then the target power factor corresponding to the three components (three-phase) The interval is 0.866-1, among which, the inductive load I quadrant does not take the absolute value, and the III quadrant power factor needs to take the absolute value. When the electric energy meter is working, the absolute value of the power factor displayed by the three components (three-phase) is "Dada" If the absolute value of the power factor displayed by the three components is "large, medium and small", "large and small", "medium, medium" or "small and small", it is determined that the electric energy meter is The wiring is wrong. If the value range of the inductive load power factor angle is 30°-60°, the target power factor range of the three components is 0.5-0.866. Among them, the inductive load I quadrant does not take the absolute value, and the III quadrant power factor needs to be taken. Absolute value, when the electric energy meter is working, the absolute value of the power factor displayed by the three components is "medium, middle and medium", then it is determined that the electric energy meter is connected correctly. If the absolute value of the power factor displayed by the three components is "large, medium and small", "Medium", "Large" or "Xiaoxiao", etc., it is determined that the electric energy meter is wired incorrectly. If the value range of the power factor angle of the inductive load is 60°-90°, the target power factor range of the three components is determined. It is 0-0.5, among which, the inductive load I quadrant does not take the absolute value, and the III quadrant power factor needs to take the absolute value. When the electric energy meter is working, the absolute value of the power factor displayed by the three components is "XiaoXiaoXiao". The connection of the electric energy meter is correct. If the absolute value of the power factor displayed by the three components is "large, medium and small", "large and small", "largely large" or "medium, medium and medium", etc., it is determined that the electric energy meter is wired incorrectly.
进一步地，若容性负载功率因数角取值范围为0°-30°，其中，容性负载运行于第Ⅱ或第Ⅳ象限，则三个元件目标功率因数区间均为0.866-1，其中，容性负载Ⅳ象限不取绝对值，Ⅱ象限功率因数需取绝对值，当电能表工作时，三个元件显示的功率因数绝对值为“大大大”，则确定所述电能表接线正确，若三个元件显示的功率因数绝对值为“大中小”、“大小中”、“中中中”或“小小小”等，则确定所述电能表接线错误，若容性负载功率因数角取值范围为30°-60°，则三个元件对应的功率因数区间为0.5-0.866，其中，容性负载Ⅳ象限不取绝对值，Ⅱ象限功率因数需取绝对值，当电能表工作时，三个元件显示的功率因数绝对值为“中中中”，则确定所述电能表接线正确，若三个元件显示的功率因数绝对值为“大中小”、“大小中”、“大大大”或“小小小”等，则确定所述电能表接线错误，若容性负载功率因数角取值范围为60°-90°，则三个元件对应的目标功率因数区间为0-0.5其中，容性负载Ⅳ象限不取绝对值，Ⅱ象限功率因数需取绝对值，当电能表工作时，三个元件显示的功率因数绝对值为“小小小”，则确定所述电能表接线正确，若三个元件显示的功率因数绝对值为“大中小”、“大小中”、“大大大”或“中中中”等，则确定所述电能表接线错误。Further, if the value range of the power factor angle of the capacitive load is 0°-30°, and the capacitive load operates in the second or fourth quadrant, the target power factor interval of the three components is 0.866-1, where, The IV quadrant of the capacitive load does not take the absolute value, and the power factor of the II quadrant needs to take the absolute value. When the electric energy meter is working, the absolute value of the power factor displayed by the three components is “Dada Da”, it is determined that the electric energy meter is connected correctly. The absolute value of the power factor displayed by the three components is "large, medium and small", "large and small", "medium, medium and medium" or "small and small", etc., it is determined that the connection of the electric energy meter is wrong. If the power factor angle of the capacitive load is taken as The value range is 30°-60°, then the power factor range corresponding to the three components is 0.5-0.866. Among them, the IV quadrant of the capacitive load does not take the absolute value, and the II quadrant power factor needs to take the absolute value. When the electric energy meter is working, If the absolute value of the power factor displayed by the three components is "medium, middle and middle", it is determined that the connection of the electric energy meter is correct. Or "XiaoXiaoXiao", etc., it is determined that the electric energy meter is wired incorrectly. If the value range of the capacitive load power factor angle is 60°-90°, the target power factor interval corresponding to the three components is 0-0.5 Among them, The IV quadrant of capacitive load does not take the absolute value, and the power factor of the II quadrant needs to take the absolute value. When the electric energy meter is working, the absolute value of the power factor displayed by the three components is "Xiaoxiaoxiao", then it is determined that the electric energy meter is connected correctly. If the absolute value of the power factor displayed by the three components is "large, medium and small", "large and small", "largely large" or "medium, medium and medium", etc., it is determined that the electric energy meter is wired incorrectly.
进一步地，三相四线智能电能表接线错误包括电压相序错误、电流极性反接等情况，具体哪一种情况导致电能表接线错误的判断方法为：例如，Ⅰ象限感性三相负载功率因数角均为为17°，目标功率因数区间均为0.866-1，获取电能表在工作过程中A相、B相和C相显示的功率因数分别为0.96、-0.73和0.22，由此可知，A相的功率因数绝对值0.96在0.866-1之间，但是B相功率因数-0.73和C相功率因数0.22的绝对值均不在0.866-1之间，且C相功率因数0.22为正值，由功率因数绝对值最大值0.96依次排序，各元件功率因数绝对值为“大中小”，所以确定所述电能表接线错误，电压接入正相序，电流接入逆相序，B、C相电流错接，且C相电流回路极性反接，此时，电压接入:
进一步地，若Ⅰ象限感性三相负载功率因数角均为21°，目标功率因数区间均为0.866-1，获取电能表在工作过程中A相、B相和C相显示的功率因数分别为-0.16、-0.16和0.16，由此可知，A相、B相、C相的功率因数绝对值0.16均不在0.866-1之间，且C相功率因数0.16为正值，依次排序，各元件功率因数绝对值为“小小小”，所以确定所述电能表接线错误，电压接入正相序、电流接入正相序或电压接入逆相序、电流接入逆相序，且C相电流回路极性反接，此时，若电压接入正相序:
进一步地，若Ⅲ象限三相感性负载功率因数角均为73°，目标功率因数区间均在0-0.5之间，获取电能表在工作过程中A相、B相和C相显示的功率因数分别为-0.68、0.68和-0.68，由此可知，A相的功率因数-0.68，B相功率因数0.68和C相功率因数-0.68的绝对值0.68均不在0-0.5之间，且B相功率因数0.68为正值，依次排序，各元件功率因数绝对值为“中中中”，所以确定所述电能表接线错误，电压接入正相序、电流接入正相序或电压接入逆相序、电流接入逆相序，且B相电流回路极性反接，此时若电压接入逆相序:
进一步地，若Ⅳ象限三相容性负载功率因数角均为51°，目标功率因数区间均在0.5-0.866之间，获取电能表在工作过程中A相、B相和C相显示的功率因数分别为0.99、0.36和0.63，由此可知，C相的功率因数0.63在0.5-0.866内，但是A相功率因数0.99和B相功率因数0.36的绝对值均不在0.5-0.866之间，且A相功率因数0.99为正值，由功率因数绝对值最大值0.99依次排序，各元件功率因数绝对值为“大小中”，所以确定所述电能表接线错误，A、B相电压错接，且A相电流回路极性反接，此时，若电压接入逆相序:
进一步地，若Ⅳ象限容性三相负载功率因数角均为71°，目标功率因数区间均为0-0.5，获取电能表在工作过程中A相、B相和C相显示的功率因数分别为-0.98、0.98和-0.98，由此可知，A相、B相、C相的功率因数绝对值0.98均不在0-0.5之间，且B相功率因数0.98为正值，依次排序，各元件功率因数绝对值为“大大大”，所以确定所述电能表接线错误，电压接入正相序、电流接入正相序或电压接入逆相序、电流接入逆相序，且B相电流回路极性反接，此时若电压接入逆相序:
进一步地，若Ⅱ象限三相容性负载功率因数角均为21°，目标功率因数区间均在0.866-1之间，获取电能表在工作过程中A相、B相和C相显示的功率因数分别为0.78、-0.16和-0.93，由此可知，C相的功率因数绝对值0.93在0.866-1内，但是A相功率因数0.78和B相功率因数-0.16的绝对值均不在0.866-1之间，且B相功率因数-0.16为负值，由功率因数绝对值最大值0.93依次排序，各元件功率因数绝对值为“大中小”，所以确定所述电能表接线错误，A、B相电压错接，且B相电流回路极性反接，此时电压接入:
根据本发明提供的另一种三相四线智能电能表错误接线的检测方法，与目前利用测试仪器在电能表端钮盒处测量相关数据来判断电能表是否存在接线错误的方式相比，本发明通过获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数；并基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；最终基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误，由此通过三相四线智能电能表中显示的电流和电压，确定所述三相四线智能电能表所测电路中的目标功率因数区间，最终基于所述目标功率因数区间和所述电能表中显示的功率因数，判断所述三相四线智能电能表是否存在错误接线，避免了通过测量仪器测量所述三相四线智能电能表钮盒处的各项数据来判断所述电能表是否存在接线错误，提高了电能表错误接线的检测效率，与此同时，避免了由于工作人员测量出错误的数据，从而对三相四线智能电能表错误接线的判断出现错误的情况，进而提高了三相四线智能电能表错误接线的检测准确度。According to another method for detecting wrong wiring of a three-phase four-wire smart electric energy meter provided by the present invention, compared with the current method of using a test instrument to measure the relevant data at the terminal button box of the electric energy meter to determine whether the electric energy meter has a wrong wiring The invention obtains the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during operation; and determines the target power factor of the circuit measured by the three-phase four-wire smart energy meter based on the voltage and the current interval; finally, based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, determine whether the three-phase four-wire smart energy meter is wired incorrectly, thereby passing the current displayed in the three-phase four-wire smart energy meter and voltage, determine the target power factor interval in the circuit measured by the three-phase four-wire smart energy meter, and finally determine the three-phase four-wire smart energy meter based on the target power factor interval and the power factor displayed in the energy meter Whether the electric energy meter has wrong wiring, avoids judging whether the electric energy meter has a wiring error by measuring various data at the button box of the three-phase four-wire smart electric energy meter by a measuring instrument, and improves the detection efficiency of the wrong wiring of the electric energy meter, At the same time, it avoids the situation that the wrong data is measured by the staff, so the judgment of the wrong wiring of the three-phase four-wire smart electric energy meter is wrong, thereby improving the detection accuracy of the wrong connection of the three-phase four-wire smart electric energy meter.
进一步地，作为图1的具体实现，本发明实施例提供了一种三相四线智能电能表错误接线的检测装置，如图3所示，所述装置包括：获取单元31、确定单元32和判定单元33。Further, as a specific implementation of FIG. 1 , an embodiment of the present invention provides a device for detecting wrong wiring of a three-phase four-wire smart energy meter. As shown in FIG. 3 , the device includes: an
所述获取单元31，可以用于获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数。The obtaining
所述确定单元32，可以用于基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间。The determining
所述判定单元33，可以用于基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误。The determining
在具体应用场景中，为了确定所述三相四线智能电能表所测电路的目标功率因数区间，如图4所示，所述确定单元32，包括计算模块321和第一确定模块322。In a specific application scenario, in order to determine the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter, as shown in FIG. 4 , the
所述计算模块321，可以用于计算所述电压和所述电流之间的相位差，并将所述相位差确定为所述三相四线智能电能表所测电路的功率因数角。The
所述第一确定模块322，可以用于基于所述功率因数角，确定所述三相四线智能电能表所测电路的目标功率因数区间。The first determining
在具体应用场景中，为了所述基于所述功率因数角，确定所述三相四线智能电能表所测电路的目标功率因数区间，所述第一确定模块322，具体可以用于从多个角度区间中确定所述功率因数角所属的目标角度区间；基于所述目标角度区间，确定所述三相四线智能电能表所测电路的目标功率因数区间。In a specific application scenario, in order to determine the target power factor interval of the circuit measured by the three-phase four-wire smart energy meter based on the power factor angle, the first determining
在具体应用场景中，为了基于所述目标角度区间，确定所述电能表所测电路的目标功率因数区间，所述第一确定模块322，具体还可以用于确定所述目标角度区间对应的余弦值区间；将所述余弦值区间确定为所述三相四线智能电能表所测电路的目标功率因数区间。In a specific application scenario, in order to determine the target power factor interval of the circuit measured by the electric energy meter based on the target angle interval, the
在具体应用场景中，为了判定所述三相四线智能电能表接线是否错误，所述判定单元33，包括判断模块331和第二确定模块332。In a specific application scenario, in order to determine whether the three-phase four-wire smart energy meter is wired incorrectly, the
所述判断模块331，可以用于判断所述功率因数绝对值是否在所述目标功率因数区间内。The judging
所述第二确定模块332，可以用于若所述功率因数绝对值不在所述目标功率因数区间内，则确定所述三相四线智能电能表接线错误。The second determining
在具体应用场景中，为了判断所述三相四线智能电能表接线是否错误，所述第二确定模块332，还可以用于若所述功率因数绝对值在所述目标功率因数区间内，则确定所述三相四线智能电能表接线正确。In a specific application scenario, in order to determine whether the three-phase four-wire smart energy meter is wired incorrectly, the
在具体应用场景中，为了获取三相四线智能电能表在工作过程中显示的电压、电流和功率因数，所述获取单元31，具体可以用于判断所述三相四线智能电能表所测电路是否属于感性负载电路或者容性负载电路；若所述三相四线智能电能表所测电路属于感性负载电路，则获取所述三相四线智能电能表在工作过程中第一象限或第三象限中显示的电压、电流和功率因数；若所述三相四线智能电能表所测电路属于容性负载电路，则获取所述三相四线智能电能表在工作过程中第二象限或第四象限中显示的电压、电流和功率因数。In a specific application scenario, in order to obtain the voltage, current and power factor displayed by the three-phase four-wire smart energy meter during operation, the obtaining
需要说明的是，本发明实施例提供的一种三相四线智能电能表错误接线的检测装置所涉及各功能模块的其他相应描述，可以参考图1所示方法的对应描述，在此不再赘述。It should be noted that, for other corresponding descriptions of the functional modules involved in the device for detecting wrong wiring of a three-phase four-wire smart energy meter provided by the embodiment of the present invention, reference may be made to the corresponding description of the method shown in FIG. 1 , which is not repeated here. Repeat.
基于上述如图1所示方法，相应的，本发明实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现以下步骤：获取电能表在工作过程中显示的电压、电流和功率因数；基于所述电压和所述电流，确定所述电能表所测电路的目标功率因数区间；基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述电能表接线是否错误。Based on the above method as shown in FIG. 1 , correspondingly, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented: obtaining an electric energy meter while working The voltage, current and power factor displayed in the process; based on the voltage and the current, determine the target power factor interval of the circuit measured by the electric energy meter; based on the target power factor interval and the power factor corresponding to the power factor The absolute value is used to determine whether the connection of the electric energy meter is wrong.
基于上述如图1所示方法和如图3所示装置的实施例，本发明实施例还提供了一种计算机设备的实体结构图，如图5所示，该计算机设备包括：处理器41、存储器42、及存储在存储器42上并可在处理器上运行的计算机程序，其中存储器42和处理器41均设置在总线43上所述处理器41执行所述程序时实现以下步骤：获取电能表在工作过程中显示的电压、电流和功率因数；基于所述电压和所述电流，确定所述电能表所测电路的目标功率因数区间；基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述电能表接线是否错误。Based on the foregoing embodiments of the method shown in FIG. 1 and the apparatus shown in FIG. 3 , an embodiment of the present invention further provides an entity structure diagram of a computer device. As shown in FIG. 5 , the computer device includes: a
通过本发明的技术方案，本发明通过获取电能表在工作过程中显示的电压、电流和功率因数；并基于所述电压和所述电流，确定所述三相四线智能电能表所测电路的目标功率因数区间；最终基于所述目标功率因数区间和所述功率因数对应的功率因数绝对值，判定所述三相四线智能电能表接线是否错误，由此通过三相四线智能电能表中显示的电流和电压，确定所述三相四线智能电能表所测电路中的目标功率因数区间，最终基于所述目标功率因数区间和所述电能表中显示的功率因数，判断所述三相四线智能电能表是否存在错误接线，避免了通过测量仪器测量所述三相四线智能电能表钮盒处的各项数据来判断所述电能表是否存在接线错误，提高了电能表错误接线的检测效率，与此同时，避免了由于工作人员测量出错误的数据，从而对三相四线智能电能表错误接线的判断出现错误的情况，进而提高了三相四线智能电能表错误接线的检测准确度。Through the technical solution of the present invention, the present invention obtains the voltage, current and power factor displayed by the electric energy meter during operation; and based on the voltage and the current, determines the circuit measured by the three-phase four-wire smart electric energy meter. target power factor interval; finally, based on the target power factor interval and the absolute value of the power factor corresponding to the power factor, it is determined whether the three-phase four-wire smart energy meter is wired incorrectly. The displayed current and voltage, determine the target power factor interval in the circuit measured by the three-phase four-wire smart energy meter, and finally determine the three-phase power factor interval based on the target power factor interval and the power factor displayed in the energy meter Whether the four-wire smart electric energy meter has wrong wiring, it avoids the need to measure the data at the button box of the three-phase four-wire smart electric energy meter to determine whether the electric energy meter has a wrong wiring, which improves the possibility of wrong wiring of the electric energy meter. The detection efficiency, at the same time, avoids the wrong judgment of the wrong wiring of the three-phase four-wire smart energy meter due to the wrong data measured by the staff, thereby improving the detection of the wrong wiring of the three-phase four-wire smart energy meter. Accuracy.
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by a general-purpose computing device, which can be centralized on a single computing device, or distributed in a network composed of multiple computing devices Alternatively, they may be implemented in program code executable by a computing device, such that they may be stored in a storage device and executed by the computing device, and in some cases, in a different order than here The steps shown or described are performed either by fabricating them separately into individual integrated circuit modules, or by fabricating multiple modules or steps of them into a single integrated circuit module. As such, the present invention is not limited to any particular combination of hardware and software.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
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