技术领域Technical field
本申请涉及电压监测技术领域，尤其涉及一种电压监测仪互校准系统和方法。The present application relates to the technical field of voltage monitoring, and in particular to a voltage monitor mutual calibration system and method.
背景技术Background technique
随着电力系统中各类电测仪表的大规模安装与应用，仪表的管理人员面临着越来越繁重的管理工作。不管是何种监测仪表或装置，都会面临着随着运行时间的推移、元器件老化等原因造成的精度下降，测量准确度不高、数据质量低下的问题。尤其目前大面积采用电压监测仪对系统电压进行监测，如果电压监测仪监测精度下降一定会影响系统电压的采集，进而影响判断原件的工作。因此要保证电压监测仪的准确工作，才能保证电网稳定运行。With the large-scale installation and application of various electrical measuring instruments in power systems, instrument managers are faced with increasingly arduous management work. No matter what kind of monitoring instrument or device it is, it will face the problems of decreased accuracy, low measurement accuracy, and low data quality caused by the passage of operating time, aging of components, etc. Especially at present, voltage monitors are used in large areas to monitor system voltage. If the monitoring accuracy of the voltage monitor decreases, it will definitely affect the collection of system voltage, and thus affect the work of judging the original component. Therefore, it is necessary to ensure the accurate operation of the voltage monitor to ensure the stable operation of the power grid.
目前，供电电压合格率是评价电力企业对用户供电质量的重要指标，也是政府部门监管供电企业的重要内容。当前环境下，供电企业将提高供电质量作为企业生命线，对电压进行持续性监测(电压监测是监测电力系统正常运行状态缓慢变化所引起的电压偏差，通常采用电压检测仪进行监测)，采用的常见设备就是电压监测仪。At present, the power supply voltage qualification rate is an important indicator for evaluating the quality of power supply provided by power companies to users, and is also an important part of government departments' supervision of power supply companies. In the current environment, power supply companies regard improving power supply quality as the lifeline of the company and continuously monitor voltage (voltage monitoring is to monitor voltage deviations caused by slow changes in the normal operating status of the power system, usually using voltage detectors). Commonly used The device is a voltage monitor.
电压监测仪是一种能够监测和统计电力系统运行变化引起电压偏差的仪器设备，具有监测、保存、分析、查询及参数设置功能，支持短信、无线网络、公网通讯。但随着设备的长期运行，由于元器件老化、失效等会导致其可靠性降低、数据缺失及测量精度下降问题；当前通常采用现场定检或送检方式对电压监测仪进行检验，但由于电压监测仪安装环境复杂，安装地点分散，导致校准工作的人力物力成本高，以致造成对电压监测仪的校准工作难以开展。The voltage monitor is an instrument that can monitor and count voltage deviations caused by changes in the operation of the power system. It has the functions of monitoring, saving, analyzing, querying and parameter setting, and supports text messages, wireless networks, and public network communications. However, with the long-term operation of the equipment, aging and failure of components will lead to reduced reliability, missing data and reduced measurement accuracy. Currently, voltage monitors are usually inspected by on-site inspection or inspection, but due to the voltage The installation environment of the monitor is complex and the installation locations are scattered, which results in high labor and material costs for the calibration work, making it difficult to calibrate the voltage monitor.
由上述可知，现有技术大多是针对电压监测仪功能是否故障的监测，忽略了对其最基本的监测精度的监管，现有技术中无法实现对电压监测仪监测精度远程校准以及实时校准。It can be seen from the above that most of the existing technologies are aimed at monitoring whether the function of the voltage monitor is faulty, and ignore the supervision of its most basic monitoring accuracy. The existing technology cannot achieve remote calibration and real-time calibration of the monitoring accuracy of the voltage monitor.
因此，提供一种电压监测仪互校准系统，从而实现对各种类型的老旧电压监测仪、新装电压监测仪随时或定期的互相校准，保证各个运行中的电压监测仪可靠运行，是本发明需要解决的主要问题。Therefore, it is the present invention to provide a voltage monitor mutual calibration system to realize mutual calibration of various types of old voltage monitors and newly installed voltage monitors at any time or regularly, and to ensure the reliable operation of each operating voltage monitor. The main issues that need to be addressed.
发明内容Contents of the invention
本申请提供了一种电压监测仪互校准系统和方法，以解决有技术中无法实现对电压监测仪监测精度远程校准以及实时校准的问题。This application provides a voltage monitor mutual calibration system and method to solve the problem in the prior art that remote calibration and real-time calibration of voltage monitor monitoring accuracy cannot be achieved.
本申请采用的技术方案如下：The technical solutions adopted in this application are as follows:
本发明提供了一种电压监测仪互校准系统，包括待测电压监测仪、待测电压监测仪的一侧的电压监测仪和远程控制终端，所述待测电压监测仪和所述待测电压监测仪的一侧的电压监测仪内部均安装有所述校准终端；The invention provides a voltage monitor mutual calibration system, which includes a voltage monitor to be measured, a voltage monitor on one side of the voltage monitor to be measured, and a remote control terminal. The voltage monitor to be measured and the voltage to be measured are The calibration terminal is installed inside the voltage monitor on one side of the monitor;
所述校准终端包括内置源模块、接收模块、结果反馈模块、回路调整模块、第一无线模块，所述待测电压监测仪内部的接收模块与所述待测电压监测仪的一侧的电压监测仪内部校准终端的内置源模块通讯连接；The calibration terminal includes a built-in source module, a receiving module, a result feedback module, a loop adjustment module, and a first wireless module. The receiving module inside the voltage monitor to be measured and the voltage monitoring module on one side of the voltage monitor to be measured are The built-in source module communication connection of the internal calibration terminal of the instrument;
所述远程控制终端摆放在电压监测仪的监测主站，包括选择模块、执行模块、定时模块、分析模块、校准模块、第二无线模块，The remote control terminal is placed at the main monitoring station of the voltage monitor and includes a selection module, an execution module, a timing module, an analysis module, a calibration module, and a second wireless module.
所述执行模块与所述待测电压监测仪的一侧的电压监测仪内部校准终端的内置源模块连接，所述定时模块和选择模块相连接，所述结果反馈模块、所述选择模块和校准模块均与所述分析模块相连接；The execution module is connected to the built-in source module of the internal calibration terminal of the voltage monitor on one side of the voltage monitor to be measured, the timing module is connected to the selection module, the result feedback module, the selection module and the calibration The modules are all connected to the analysis module;
所述校准终端与远程控制终端的数据交换、命令发送及接收通过第一无线模块、第二无线模块之间的通讯完成；待测电压监测仪和待测电压监测仪的一侧的电压监测仪间数据下发与接收通过第一无线模块之间的通讯完成。The data exchange, command sending and receiving between the calibration terminal and the remote control terminal are completed through communication between the first wireless module and the second wireless module; the voltage monitor to be measured and the voltage monitor on one side of the voltage monitor to be measured Data delivery and reception are completed through communication between the first wireless modules.
进一步地，所述定时模块用于选择随时启动与定期启动功能，实现随时/定期对电压监测仪进行测量精度校准工作，并用于输入待测电压监测仪编号；Further, the timing module is used to select the function of starting at any time or starting at regular intervals, realizing the measurement accuracy calibration of the voltage monitor at any time/regularly, and is used to input the number of the voltage monitor to be measured;
所述选择模块用于根据通过定时模块输入的待测电压监测仪编号确定待测电压监测仪，并给待测电压监测仪的回路调整模块下发指令；The selection module is used to determine the voltage monitor to be measured based on the voltage monitor number to be measured input through the timing module, and to issue instructions to the loop adjustment module of the voltage monitor to be measured;
所述选择模块用于下发“调整电压监测仪为校准测量精度回路”命令；The selection module is used to issue the command "Adjust the voltage monitor to calibrate the measurement accuracy loop";
所述回路调整模块用于根据选择模块下发的指令调整待测电压监测仪的状态，选择采样回路连接线路监测电压回路还是校准测量精度回路。The loop adjustment module is used to adjust the status of the voltage monitor to be measured according to the instructions issued by the selection module, and select the sampling loop connection line monitoring voltage loop or the calibration measurement accuracy loop.
进一步地，所述执行模块用于确认待测电压监测仪调整校准测量精度回路，并向待测电压监测仪的一侧的电压监测仪内部校准终端的内置源模块下发“输出测试”命令；Further, the execution module is used to confirm the adjustment and calibration measurement accuracy loop of the voltage monitor under test, and issue an "output test" command to the built-in source module of the internal calibration terminal of the voltage monitor on one side of the voltage monitor under test;
所述待测电压监测仪的一侧的电压监测仪内部校准终端的内置源模块作为基准源，用于向所述待测电压监测仪的接收模块输出基准电压量；The built-in source module of the internal calibration terminal of the voltage monitor on one side of the voltage monitor to be measured is used as a reference source for outputting a reference voltage amount to the receiving module of the voltage monitor to be measured;
所述接收模块用于接收基准电压量信号，并将基准电压量传输至待测电压监测仪采样回路。The receiving module is used to receive the reference voltage signal and transmit the reference voltage signal to the sampling circuit of the voltage monitor to be measured.
进一步地，所述结果反馈模块用于接收待测电压监测仪采样回路输出的基准电压量和电压测量值，并传输至分析模块；Further, the result feedback module is used to receive the reference voltage quantity and voltage measurement value output by the sampling circuit of the voltage monitor under test, and transmit them to the analysis module;
所述分析模块用于分析待测电压监测仪采样回路输出的电压测量值与基准电压量之间的误差，并确定待测电压监测仪的电压测量精度是否满足要求。The analysis module is used to analyze the error between the voltage measurement value output by the sampling circuit of the voltage monitor under test and the reference voltage, and determine whether the voltage measurement accuracy of the voltage monitor under test meets the requirements.
进一步地，所述校准模块用于在待测电压监测仪的测量精度不满足要求时，调整测量精度不满足要求的电压监测仪的校准系数。Further, the calibration module is used to adjust the calibration coefficient of the voltage monitor whose measurement accuracy does not meet the requirements when the measurement accuracy of the voltage monitor to be measured does not meet the requirements.
进一步地，所述定期启动功能的校准间隔为1次/3天。Further, the calibration interval of the regular startup function is once every 3 days.
进一步地，所述远程控制终端还包括告警模块，告警模块与所述校准模块相连接；Further, the remote control terminal also includes an alarm module, and the alarm module is connected to the calibration module;
所述告警模块用于累计校准次数，并在校准次数达到两次以上时进行告警。The alarm module is used to accumulate the number of calibrations and issue an alarm when the number of calibrations reaches more than two times.
进一步地，一种电压监测仪互校准方法，包括以下步骤：Further, a voltage monitor mutual calibration method includes the following steps:
S1：定时模块开启校准程序，输入待测电压监测仪编号和待测电压监测仪的一侧的电压监测仪的编号，选择模块找到待测电压监测仪和待测电压监测仪的一侧的电压监测仪，并给待测电压监测仪的回路调整模块下发断开待测电压监测仪的采样回路与线路电压监测回路并连接校准测量精度回路指令；S1: The timing module starts the calibration process, enter the number of the voltage monitor to be measured and the number of the voltage monitor on one side of the voltage monitor to be measured, select the module to find the voltage monitor to be measured and the voltage on one side of the voltage monitor to be measured monitor, and issues an instruction to the loop adjustment module of the voltage monitor to be measured to disconnect the sampling loop of the voltage monitor to be measured and the line voltage monitoring loop and connect the calibration measurement accuracy loop;
S2：所述回路调整模块断开待测电压监测仪的采样回路与线路电压监测回路的连接，将所述待测电压监测仪的采样回路连接至校准测量精度回路，并给执行模块发送确认的命令；S2: The loop adjustment module disconnects the sampling loop of the voltage monitor to be measured from the line voltage monitoring loop, connects the sampling loop of the voltage monitor to be measured to the calibration measurement accuracy loop, and sends a confirmation to the execution module Order;
S3：执行模块确认校准测量精度回路后向邻近待测电压监测仪的一侧的电压监测仪校准终端的内置源模块下发“输出测试”命令，所述内置源模块向待测电压监测仪的接收模块输出基准电压量，接收模块通过校准测量精度回路将所述基准电压量传输至待测电压监测仪的采样回路；S3: After the execution module confirms the calibration measurement accuracy loop, it issues an "output test" command to the built-in source module of the voltage monitor calibration terminal adjacent to the voltage monitor to be measured. The built-in source module The receiving module outputs a reference voltage quantity, and the receiving module transmits the reference voltage quantity to the sampling circuit of the voltage monitor to be measured through the calibration measurement accuracy loop;
S4：待测电压监测仪的结果反馈模块接收待测电压监测仪的采样回路输出的电压测量值和基准电压量，并传输至分析模块；S4: The result feedback module of the voltage monitor under test receives the voltage measurement value and reference voltage output by the sampling circuit of the voltage monitor under test, and transmits them to the analysis module;
S5：分析模块对比计算邻近待测电压监测仪的电压监测仪校准终端内置源模块发出的基准电压量与待测电压监测仪的电压测量值之间的误差，计算电压监测仪的测量精度，判断是否满足要求；当判断结果满足要求时，通过选择模块给回路调整模块下发“调整电压监测仪为正常线路监测电压”命令，待测电压监测仪的回路调整模块断开当前校准测量精度回路，连接线路电压监测回路。S5: The analysis module compares and calculates the error between the reference voltage emitted by the built-in source module of the voltage monitor calibration terminal adjacent to the voltage monitor to be measured and the voltage measurement value of the voltage monitor to be measured, calculates the measurement accuracy of the voltage monitor, and determines Whether the requirements are met; when the judgment result meets the requirements, the "Adjust the voltage monitor to normal line monitoring voltage" command is issued to the loop adjustment module through the selection module, and the loop adjustment module of the voltage monitor under test disconnects the current calibration measurement accuracy loop. Connect the line voltage monitoring loop.
进一步地，当判断结果不满足要求时，所述分析模块给校准模块发送调整待测电压监测仪的校准系数的信号，校准模块调整待测电压监测仪的校准系数；Further, when the judgment result does not meet the requirements, the analysis module sends a signal to the calibration module to adjust the calibration coefficient of the voltage monitor to be measured, and the calibration module adjusts the calibration coefficient of the voltage monitor to be measured;
S6：执行S3-S5步骤，直至判断结果满足要求，调整两次后依然不满足要求，告警模块发出告警信息，提醒运维人员查看。S6: Execute steps S3-S5 until the judgment result meets the requirements. If it still does not meet the requirements after two adjustments, the alarm module issues an alarm message to remind the operation and maintenance personnel to check.
采用本申请的技术方案的有益效果如下：The beneficial effects of adopting the technical solution of this application are as follows:
本发明的一种电压监测仪互校准系统和方法，远程控制终端可以连接多台电压监测仪，本方案远程控制终端连接两台电压监测仪，分别为待测电压监测仪和待测电压监测仪的一侧的电压监测仪，远程控制终端获取通过待测电压监测仪采集的电压测量值和通过待测电压监测仪的一侧的电压监测仪的基准电压量，通过基准电压量和电压测量值之间的误差计算待测电压监测仪的测量精度，当待测电压监测仪的测量精度不满足要求时，校准模块调整待测电压监测仪的校准系数。A voltage monitor mutual calibration system and method of the present invention. The remote control terminal can connect to multiple voltage monitors. In this solution, the remote control terminal connects to two voltage monitors, namely the voltage monitor to be measured and the voltage monitor to be measured. The remote control terminal obtains the voltage measurement value collected by the voltage monitor to be measured and the reference voltage amount of the voltage monitor on the side of the voltage monitor to be measured, and obtains the reference voltage amount and the voltage measurement value through the voltage monitor on one side of the voltage monitor to be measured. The error between them calculates the measurement accuracy of the voltage monitor to be measured. When the measurement accuracy of the voltage monitor to be measured does not meet the requirements, the calibration module adjusts the calibration coefficient of the voltage monitor to be measured.
本发明可实现对各种类型的老旧电压监测仪、新装电压监测仪随时或定期的互相校准，保证各个运行中的电压监测仪可靠运行。The invention can realize mutual calibration of various types of old voltage monitors and newly installed voltage monitors at any time or regularly to ensure reliable operation of each operating voltage monitor.
附图说明Description of the drawings
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to explain the technical solutions of the present application more clearly, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without exerting creative efforts, Additional drawings can be obtained from these drawings.
图1为现有技术的示意图(一种具有自诊断功能的电压监测仪)；Figure 1 is a schematic diagram of the prior art (a voltage monitor with a self-diagnostic function);
图2为现有技术的示意图(一种电力配电网运行电压监测仪)；Figure 2 is a schematic diagram of the prior art (a power distribution network operating voltage monitor);
图3为一种电压监测仪互校准系统的示意图；Figure 3 is a schematic diagram of a voltage monitor mutual calibration system;
图4为一种电压监测仪互校准系统校准过程的示意图(实线箭头为内部硬接线，虚线箭头为无线传输，1-10为互校准过程顺序)；Figure 4 is a schematic diagram of the calibration process of a voltage monitor mutual calibration system (the solid arrows are internal hard wiring, the dotted arrows are wireless transmission, 1-10 are the mutual calibration process sequence);
图5为一种电压监测仪互校准方法的流程图；Figure 5 is a flow chart of a voltage monitor mutual calibration method;
图示说明：Illustration description:
其中，1-校准终端；11-内置源模块；12-接收模块；13-结果反馈模块；14-回路调整模块；15-无线模块；Among them, 1-calibration terminal; 11-built-in source module; 12-receiving module; 13-result feedback module; 14-loop adjustment module; 15-wireless module;
2-远程控制终端；21-选择模块；22-执行模块；23-定时模块；24-分析模块；25-校准模块；26-无线模块；27-告警模块。2-Remote control terminal; 21-selection module; 22-execution module; 23-timing module; 24-analysis module; 25-calibration module; 26-wireless module; 27-alarm module.
具体实施方式Detailed ways
如图1所示的一种具有自诊断功能的电压监测仪，包括采集模块、控制模块、电源模块、存储模块、通讯定位模块及自检模块；所述自检模块配置为对所述采集模块、所述控制模块、所述电源模块、存储模块以及参数配置进行自检得到各个模块的运行工况；所述通讯定位模块配置为将各个模块的运行工况以及与位置信息关联的采集数据传输至电压管理系统。在电压监测仪中增加自诊断功能模块，自我检测电压监测仪的的运行工况，一旦发现病态运维模块及时修理、更换，从而预防或消除故障，保证电压监测仪安全可靠运行。主要是预防和消除电压监测仪的故障。As shown in Figure 1, a voltage monitor with self-diagnosis function includes a collection module, a control module, a power module, a storage module, a communication positioning module and a self-test module; the self-test module is configured to monitor the collection module The control module, the power module, the storage module and the parameter configuration perform self-tests to obtain the operating conditions of each module; the communication positioning module is configured to transmit the operating conditions of each module and the collected data associated with the location information. to the voltage management system. Add a self-diagnosis function module to the voltage monitor to self-detect the operating conditions of the voltage monitor. Once an abnormality is discovered, the operation and maintenance module can be repaired and replaced in a timely manner to prevent or eliminate faults and ensure the safe and reliable operation of the voltage monitor. The main purpose is to prevent and eliminate voltage monitor failures.
如图2所示为一种电力配电网运行电压监测仪，包括壳体和检测模块，检测模块安装在壳体的内侧，壳体的内侧还安装有电源组件，电源组件电连接检测模块，检测模块通过导线连接有面板，面板安装在壳体的侧边上，面板上开设有显示屏、开关按钮和操作按钮，显示屏、开关按钮和操作按钮均电性连接检测模块；本电力配电网运行电压监测仪，检测模块用于对电力配电网进行检测分析，主控芯片能通过不同的接口连接上位机，主控芯片还能通过GPRS通讯模块和信号发送模块将数据通过无线数据传输的方法发送给目标单元，便利性和容错性得到了保证，这样检测人员能在第一时间无差异的得到监测数据，电压采集芯片能捕捉配电网运行的电压电弧特性，监测精准性好。新的监测精准性好的电压监测仪，但无法对老旧电压监测仪进行校准。Figure 2 shows a power distribution network operating voltage monitor, which includes a housing and a detection module. The detection module is installed on the inside of the housing. A power supply component is also installed on the inside of the housing. The power supply component is electrically connected to the detection module. The detection module is connected to a panel through wires, and the panel is installed on the side of the casing. The panel is provided with a display screen, a switch button and an operation button. The display screen, switch button and operation button are all electrically connected to the detection module; this power distribution Network operating voltage monitor, the detection module is used to detect and analyze the power distribution network. The main control chip can connect to the host computer through different interfaces. The main control chip can also transmit data through wireless data through the GPRS communication module and signal transmission module. The method is sent to the target unit, and convenience and fault tolerance are guaranteed, so that inspectors can obtain monitoring data without any difference at the first time. The voltage acquisition chip can capture the voltage and arc characteristics of the distribution network operation, and the monitoring accuracy is good. New voltage monitors have good monitoring accuracy, but old voltage monitors cannot be calibrated.
如图3所示为本实施例的一种电压监测仪互校准系统的示意图；Figure 3 shows a schematic diagram of a voltage monitor mutual calibration system in this embodiment;
具体来说，本申请提供的一种电压监测仪互校准系统，包括待测电压监测仪、待测电压监测仪的一侧的电压监测仪和远程控制终端2，所述待测电压监测仪和所述待测电压监测仪的一侧的电压监测仪内部均安装有所述校准终端1。Specifically, this application provides a voltage monitor mutual calibration system, which includes a voltage monitor to be measured, a voltage monitor on one side of the voltage monitor to be measured, and a remote control terminal 2. The voltage monitor to be measured and The calibration terminal 1 is installed inside the voltage monitor on one side of the voltage monitor to be measured.
具体来说，所述校准终端1包括内置源模块11、接收模块12、结果反馈模块13、回路调整模块14、第一无线模块15，所述待测电压监测仪内部的接收模块12与所述待测电压监测仪的一侧的电压监测仪内部校准终端1的内置源模块11通讯连接；所述远程控制终端2摆放在电压监测仪的监测主站，包括选择模块21、执行模块22、定时模块23、分析模块24、校准模块25、第二无线模块26，所述执行模块22与所述待测电压监测仪的一侧的电压监测仪内部校准终端1的内置源模块11连接，所述定时模块23和选择模块21相连接，所述结果反馈模块13、所述选择模块21和校准模块25均与所述分析模块24相连接；Specifically, the calibration terminal 1 includes a built-in source module 11, a receiving module 12, a result feedback module 13, a loop adjustment module 14, and a first wireless module 15. The receiving module 12 inside the voltage monitor to be measured and the The built-in source module 11 of the internal calibration terminal 1 of the voltage monitor on one side of the voltage monitor to be measured is connected for communication; the remote control terminal 2 is placed at the main monitoring station of the voltage monitor and includes a selection module 21, an execution module 22, Timing module 23, analysis module 24, calibration module 25, second wireless module 26, the execution module 22 is connected to the built-in source module 11 of the internal calibration terminal 1 of the voltage monitor on one side of the voltage monitor to be measured, so The timing module 23 is connected to the selection module 21, and the result feedback module 13, the selection module 21 and the calibration module 25 are all connected to the analysis module 24;
所述校准终端1与远程控制终端2的数据交换、命令发送及接收通过第一无线模块15、第二无线模块26之间的通讯完成；待测电压监测仪和待测电压监测仪的一侧的电压监测仪间数据下发与接收通过第一无线模块15之间的通讯完成。The data exchange, command sending and receiving between the calibration terminal 1 and the remote control terminal 2 are completed through the communication between the first wireless module 15 and the second wireless module 26; the voltage monitor to be measured and one side of the voltage monitor to be measured The sending and receiving of data between the voltage monitors is completed through communication between the first wireless modules 15 .
所述定时模块23用于选择随时启动与定期启动功能，实现随时/定期对电压监测仪进行测量精度校准工作，并用于输入待测电压监测仪编号；The timing module 23 is used to select the function of starting at any time or regularly starting, to realize the measurement accuracy calibration of the voltage monitor at any time/regularly, and to input the number of the voltage monitor to be measured;
所述选择模块21用于根据通过定时模块23输入的待测电压监测仪编号确定待测电压监测仪，并给待测电压监测仪的回路调整模块14下发指令；The selection module 21 is used to determine the voltage monitor to be measured based on the voltage monitor number to be measured input through the timing module 23, and to issue instructions to the circuit adjustment module 14 of the voltage monitor to be measured;
所述选择模块21用于下发“调整电压监测仪为校准测量精度回路”命令；The selection module 21 is used to issue the command "Adjust the voltage monitor to calibrate the measurement accuracy loop";
所述回路调整模块14用于根据选择模块21下发的指令调整待测电压监测仪的状态，选择采样回路连接线路监测电压回路还是校准测量精度回路。The loop adjustment module 14 is used to adjust the status of the voltage monitor to be measured according to the instructions issued by the selection module 21, and select the sampling loop connection line monitoring voltage loop or the calibration measurement accuracy loop.
所述执行模块22用于确认待测电压监测仪调整校准测量精度回路，并向待测电压监测仪的一侧的电压监测仪内部校准终端1的内置源模块11下发“输出测试”命令；The execution module 22 is used to confirm the adjustment and calibration measurement accuracy circuit of the voltage monitor to be measured, and to issue an "output test" command to the built-in source module 11 of the internal calibration terminal 1 of the voltage monitor on one side of the voltage monitor to be measured;
所述待测电压监测仪的一侧的电压监测仪内部校准终端1的内置源模块11作为基准源，用于向所述待测电压监测仪的接收模块12输出基准电压量；The built-in source module 11 of the internal calibration terminal 1 of the voltage monitor on one side of the voltage monitor to be measured is used as a reference source for outputting a reference voltage amount to the receiving module 12 of the voltage monitor to be measured;
所述接收模块12用于接收基准电压量信号，并将基准电压量传输至待测电压监测仪采样回路。The receiving module 12 is used to receive a reference voltage signal and transmit the reference voltage signal to the sampling circuit of the voltage monitor to be measured.
所述结果反馈模块13用于接收待测电压监测仪采样回路输出的基准电压量和电压测量值，并传输至分析模块24；The result feedback module 13 is used to receive the reference voltage and voltage measurement value output by the sampling circuit of the voltage monitor under test, and transmit them to the analysis module 24;
所述分析模块24用于分析待测电压监测仪采样回路输出的电压测量值与基准电压量之间的误差，并确定待测电压监测仪的电压测量精度是否满足要求。The analysis module 24 is used to analyze the error between the voltage measurement value output by the sampling circuit of the voltage monitor under test and the reference voltage, and determine whether the voltage measurement accuracy of the voltage monitor under test meets the requirements.
所述校准模块25用于在待测电压监测仪的测量精度不满足要求时，调整测量精度不满足要求的电压监测仪的校准系数。The calibration module 25 is used to adjust the calibration coefficient of the voltage monitor whose measurement accuracy does not meet the requirements when the measurement accuracy of the voltage monitor to be measured does not meet the requirements.
所述定期启动功能的校准间隔为1次/3天。The calibration interval of the regular startup function is once every 3 days.
所述远程控制终端2还包括告警模块27，告警模块27与所述校准模块25相连接；The remote control terminal 2 also includes an alarm module 27, which is connected to the calibration module 25;
所述告警模块27用于累计校准次数，并在校准次数达到两次以上时进行告警。The alarm module 27 is used to accumulate the number of calibrations and issue an alarm when the number of calibrations reaches more than two times.
如图4所示为一种电压监测仪互校准系统校准过程的示意图(实线箭头为内部硬接线，虚线箭头为无线传输，1-10为互校准过程顺序)；Figure 4 shows a schematic diagram of the calibration process of a voltage monitor mutual calibration system (the solid arrows are internal hard wiring, the dotted arrows are wireless transmission, 1-10 are the mutual calibration process sequence);
如图5所示为本实施例的一种电压监测仪互校准方法的流程图，本实施例的一种电压监测仪互校准方法，包括以下步骤：Figure 5 shows a flow chart of a voltage monitor mutual calibration method in this embodiment. The voltage monitor mutual calibration method in this embodiment includes the following steps:
S1：定时模块23开启校准程序，输入待测电压监测仪编号和待测电压监测仪的一侧的电压监测仪的编号，选择模块21找到待测电压监测仪和待测电压监测仪的一侧的电压监测仪，并给待测电压监测仪的回路调整模块14下发断开待测电压监测仪的采样回路与线路电压监测回路并连接校准测量精度回路指令；S1: The timing module 23 starts the calibration procedure, inputs the number of the voltage monitor to be measured and the number of the voltage monitor on one side of the voltage monitor to be measured, selects module 21 to find the voltage monitor to be measured and one side of the voltage monitor to be measured. of the voltage monitor, and issues an instruction to the circuit adjustment module 14 of the voltage monitor to be measured to disconnect the sampling circuit and the line voltage monitoring circuit of the voltage monitor to be measured and connect the calibration measurement accuracy circuit;
S2：所述回路调整模块14断开待测电压监测仪的采样回路与线路电压监测回路的连接，将所述待测电压监测仪的采样回路连接至校准测量精度回路，并给执行模块22发送确认的命令；S2: The loop adjustment module 14 disconnects the sampling loop of the voltage monitor to be measured from the line voltage monitoring loop, connects the sampling loop of the voltage monitor to be measured to the calibration measurement accuracy loop, and sends the signal to the execution module 22 Confirmed order;
S3：执行模块22确认校准测量精度回路后向邻近待测电压监测仪的一侧电压监测仪校准终端的内置源模块11下发“输出测试”命令，内置源模块11向待测电压监测仪的接收模块12输出基准电压量，接收模块12通过校准测量精度回路将基准电压量传输至待测电压监测仪的采样回路；S3: After confirming the calibration measurement accuracy loop, the execution module 22 issues an "output test" command to the built-in source module 11 of the calibration terminal of the voltage monitor on the side adjacent to the voltage monitor to be measured. The built-in source module 11 sends the The receiving module 12 outputs the reference voltage amount, and the receiving module 12 transmits the reference voltage amount to the sampling loop of the voltage monitor to be measured through the calibration measurement accuracy loop;
每台电压监测仪都安装有校准终端1；用邻近待测电压监测仪的一侧电压监测仪的内置源模块11给待测电压监测仪的的接收模块12发送基准电压量，是为了防止待测电压监测仪的内置源模块故障，同理，也可以通过此方法用待测电压监测仪的内置源模块给邻近待测电压监测仪的一侧电压监测仪的接收模块12发送基准电压量，给邻近待测电压监测仪的一侧电压监测仪进行校准，可以实现待测电压监测仪和邻近待测电压监测仪的一侧的电压监测仪能够互相校准。Each voltage monitor is equipped with a calibration terminal 1; the built-in source module 11 of the voltage monitor on the side adjacent to the voltage monitor to be measured is used to send the reference voltage to the receiving module 12 of the voltage monitor to be measured, in order to prevent The built-in source module of the voltage monitor under test is faulty. In the same way, the built-in source module of the voltage monitor under test can also be used to send the reference voltage to the receiving module 12 of the voltage monitor on the side adjacent to the voltage monitor under test. Calibrating the voltage monitor on one side adjacent to the voltage monitor to be measured enables the voltage monitor to be measured and the voltage monitor on the side adjacent to the voltage monitor to be measured to be calibrated with each other.
S4：待测电压监测仪的结果反馈模块13接收待测电压监测仪的采样回路输出的电压测量值(待测电压监测仪的采样回路采样得到的)和基准电压量，并传输至分析模块24；S4: The result feedback module 13 of the voltage monitor under test receives the voltage measurement value output by the sampling circuit of the voltage monitor under test (sampled by the sampling circuit of the voltage monitor under test) and the reference voltage, and transmits them to the analysis module 24 ;
S5：分析模块24对比计算邻近待测电压监测仪的电压监测仪校准终端内置源模块11发出的基准电压量与待测电压监测仪的电压测量值之间的误差，计算电压监测仪的测量精度，判断是否满足要求；当判断结果满足要求时，通过选择模块21给回路调整模块14下发“调整电压监测仪为正常线路监测电压”命令，待测电压监测仪的回路调整模块14断开当前校准测量精度回路，连接线路电压监测回路；当判断结果不满足要求时(测电压监测仪采样精度为不合格)，所述分析模块24给校准模块25发送调整待测电压监测仪的校准系数的信号，校准模块25调整待测电压监测仪的校准系数；S5: The analysis module 24 compares and calculates the error between the reference voltage amount emitted by the built-in source module 11 of the voltage monitor calibration terminal adjacent to the voltage monitor to be measured and the voltage measurement value of the voltage monitor to be measured, and calculates the measurement accuracy of the voltage monitor. , judge whether the requirements are met; when the judgment result meets the requirements, the selection module 21 issues the command "Adjust the voltage monitor to the normal line monitoring voltage" to the loop adjustment module 14, and the loop adjustment module 14 of the voltage monitor to be measured disconnects the current Calibrate the measurement accuracy loop and connect the line voltage monitoring loop; when the judgment result does not meet the requirements (the sampling accuracy of the voltage measurement monitor is unqualified), the analysis module 24 sends to the calibration module 25 the calibration coefficient of the voltage monitor to be measured. signal, the calibration module 25 adjusts the calibration coefficient of the voltage monitor under test;
设基准电压为A，因为发出的基准电压A是待测电压监测仪的一侧的电压监测仪发出的，肯定要拿这个作为基准进行对比，经过待测电压监测仪采用回路后的电压测量值B。计算相对误差(B-A)/A是否在精度(等级)范围内即可。Let the reference voltage be A, because the reference voltage A is emitted by the voltage monitor on one side of the voltage monitor to be measured. This must be used as a benchmark for comparison. The voltage measurement value after the voltage monitor to be measured adopts the circuit. B. Just calculate whether the relative error (B-A)/A is within the accuracy (level) range.
S6：执行S3-S5步骤，直至判断结果满足要求，调整两次后依然不满足要求，告警模块发出告警信息，提醒运维人员查看。S6: Execute steps S3-S5 until the judgment result meets the requirements. If it still does not meet the requirements after two adjustments, the alarm module issues an alarm message to remind the operation and maintenance personnel to check.
其中，本实施例中的待测电压监测仪的一侧的电压监测仪具有两个，执行模块22确认校准测量精度回路后向邻近待测电压监测仪的一侧两个电压监测仪校准终端的内置源模块11下发“输出测试”命令，内置源模块11向待测电压监测仪的接收模块12输出两个基准电压量，接收模块12通过校准测量精度回路将两个基准电压量传输至待测电压监测仪的采样回路；待测电压监测仪的结果反馈模块13接收待测电压监测仪的采样回路输出的电压测量值(待测电压监测仪的采样回路采样得到的)和两个基准电压量，并传输至分析模块24；分析模块24对比计算邻近待测电压监测仪的两个电压监测仪校准终端内置源模块11发出的两个基准电压量与待测电压监测仪的电压测量值之间的误差，计算待测电压监测仪的测量精度，判断两个值是否均满足要求；Among them, in this embodiment, there are two voltage monitors on one side of the voltage monitor to be measured. The execution module 22 confirms the calibration measurement accuracy loop and then sends the calibration terminals of the two voltage monitors adjacent to the voltage monitor on one side of the voltage monitor to be measured. The built-in source module 11 issues an "output test" command. The built-in source module 11 outputs two reference voltage quantities to the receiving module 12 of the voltage monitor to be measured. The receiving module 12 transmits the two reference voltage quantities to the voltage monitor to be measured through the calibration measurement accuracy loop. The sampling circuit of the voltage monitor under test; the result feedback module 13 of the voltage monitor under test receives the voltage measurement value output by the sampling circuit of the voltage monitor under test (sampled by the sampling circuit of the voltage monitor under test) and the two reference voltages The amount is transmitted to the analysis module 24; the analysis module 24 compares and calculates the two reference voltage quantities emitted by the built-in source module 11 of the two voltage monitor calibration terminals adjacent to the voltage monitor to be measured and the voltage measurement value of the voltage monitor to be measured. error between, calculate the measurement accuracy of the voltage monitor to be measured, and determine whether both values meet the requirements;
当判断结果均满足要求时，通过选择模块21给回路调整模块14下发“调整电压监测仪为正常线路监测电压”命令，待测电压监测仪的回路调整模块14断开当前校准测量精度回路，连接线路电压监测回路；当判断结果均不满足要求时(测电压监测仪采样精度为不合格)，分析模块24给校准模块25发送调整待测电压监测仪的校准系数的信号，校准模块25调整待测电压监测仪的校准系数；When the judgment results meet the requirements, the selection module 21 issues the "Adjust the voltage monitor to the normal line monitoring voltage" command to the loop adjustment module 14, and the loop adjustment module 14 of the voltage monitor to be measured disconnects the current calibration measurement accuracy loop. Connect the line voltage monitoring circuit; when the judgment results do not meet the requirements (the sampling accuracy of the voltage monitor is unqualified), the analysis module 24 sends a signal to the calibration module 25 to adjust the calibration coefficient of the voltage monitor to be measured, and the calibration module 25 adjusts Calibration coefficient of the voltage monitor under test;
本实施例为了防止待测电压监测仪的一侧的一台电压监测仪测量有误，多增加一台进行测量，两台电压监测仪发送基准电压量，最后待测电压监测仪分析模块都判断不合格，那待测电压监测仪采样精度为不合格。In this embodiment, in order to prevent the measurement error of a voltage monitor on one side of the voltage monitor to be measured, one more voltage monitor is added for measurement. The two voltage monitors send the reference voltage, and finally the analysis module of the voltage monitor to be measured determines that both If it fails, then the sampling accuracy of the voltage monitor under test is unqualified.
通过待测电压监测仪的一侧的两台电压监测仪监测待测电压监测仪的精度，当两台都判定待测电压监测仪精度不合格时，远程控制终端对其校准，校准后再次采集精度，当校准两次后仍不合格发出告警信息，提示运维人员查看。远程控制终端根据需要可以随时进行远程校准也可以定期进行。The accuracy of the voltage monitor to be measured is monitored through two voltage monitors on one side of the voltage monitor to be measured. When both determine that the accuracy of the voltage monitor to be measured is unqualified, the remote control terminal calibrates them, and collects data again after calibration. Accuracy, if the calibration is still unqualified after two calibrations, an alarm message will be issued, prompting the operation and maintenance personnel to check. The remote control terminal can perform remote calibration at any time or regularly as needed.
本发明可实现对各种类型的老旧电压监测仪、新装电压监测仪随时或定期的互相校准，保证各个运行中的电压监测仪可靠运行。The invention can realize mutual calibration of various types of old voltage monitors and newly installed voltage monitors at any time or regularly to ensure reliable operation of each operating voltage monitor.
本申请提供的实施例之间的相似部分相互参见即可，以上提供的具体实施方式只是本申请总的构思下的几个示例，并不构成本申请保护范围的限定。对于本领域的技术人员而言，在不付出创造性劳动的前提下依据本申请方案所扩展出的任何其他实施方式都属于本申请的保护范围。Similar parts between the embodiments provided in this application can be referred to each other. The specific implementations provided above are just a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other embodiments extended based on the solution of this application without any creative effort shall fall within the protection scope of this application.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110114667.4ACN112924915B (en) | 2021-01-27 | 2021-01-27 | Mutual calibration system and method for voltage monitors |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110114667.4ACN112924915B (en) | 2021-01-27 | 2021-01-27 | Mutual calibration system and method for voltage monitors |
| Publication Number | Publication Date |
|---|---|
| CN112924915A CN112924915A (en) | 2021-06-08 |
| CN112924915Btrue CN112924915B (en) | 2023-11-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110114667.4AActiveCN112924915B (en) | 2021-01-27 | 2021-01-27 | Mutual calibration system and method for voltage monitors |
| Country | Link |
|---|---|
| CN (1) | CN112924915B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119199244A (en)* | 2024-09-19 | 2024-12-27 | 武汉船舶通信研究所(中国船舶集团有限公司第七二二研究所) | A remote monitoring system based on cable voltage |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9005766D0 (en)* | 1990-03-14 | 1990-05-09 | British Telecomm | Calibrator |
| US4949029A (en)* | 1988-07-15 | 1990-08-14 | Schulmberger Industries, Inc. | Adjustment circuit and method for solid-state electricity meter |
| KR20000073113A (en)* | 1999-05-06 | 2000-12-05 | 장형서 | System and method for calibrating digital measuring instrument remotely using internet |
| DE102007047558A1 (en)* | 2007-09-28 | 2009-04-02 | Siemens Ag | Electronic switching unit for use in overcurrent tripping device of low-voltage circuit breaker, is coupled to calibration system over linking or transmission units such as communication bus, broadband Internet and interface |
| CN202210151U (en)* | 2011-09-21 | 2012-05-02 | 四川省电力公司广安电业局 | System for remote checking and monitoring for electric energy metering device |
| DE102011080874A1 (en)* | 2011-08-12 | 2013-02-14 | Bender Gmbh & Co. Kg | Electrical measuring device for measuring electrical currents, comprises connecting unit for connecting measuring current transformer, and calibration loop for calibration of measuring unit of measuring device |
| CN102981137A (en)* | 2012-11-27 | 2013-03-20 | 辽宁省电力有限公司电力科学研究院 | Remote intelligent verifying device and method of voltage monitor based on general packet radio service (GPRS)/global system for mobile communication (GSM) network |
| CN103558570A (en)* | 2013-11-06 | 2014-02-05 | 国家电网公司 | Portable voltage monitor field calibration tester |
| WO2014071753A1 (en)* | 2012-11-06 | 2014-05-15 | 国家电网公司 | Electronic transformer calibrator calibration device and method based on digital source |
| CN104181489A (en)* | 2014-09-04 | 2014-12-03 | 国家电网公司 | Calibration system for substation alternating-current sampling and measuring device |
| CN104777368A (en)* | 2015-05-05 | 2015-07-15 | 成都电兴科技有限责任公司 | On-line monitoring instrument and detection method of alternating current variable-frequency ground resistor |
| CN204595099U (en)* | 2015-05-05 | 2015-08-26 | 成都电兴科技有限责任公司 | AC frequency conversion stake resistance on-line computing model |
| CN105092952A (en)* | 2015-08-12 | 2015-11-25 | 国家电网公司 | DC signal monitor |
| CN204832369U (en)* | 2015-04-30 | 2015-12-02 | 航天科工深圳（集团）有限公司 | Detection apparatus for power equipment |
| CN105652230A (en)* | 2016-03-30 | 2016-06-08 | 国网电力科学研究院武汉南瑞有限责任公司 | Direct-current current transformer field checking device and method based on standard source |
| CN105785306A (en)* | 2015-03-23 | 2016-07-20 | 国家电网公司 | Voltage transformer on-line group calibration method and apparatus |
| CN105842510A (en)* | 2016-03-17 | 2016-08-10 | 中国电力科学研究院 | Electronic transformer with self-calibration function and self-calibration method thereof |
| CN107422291A (en)* | 2017-09-14 | 2017-12-01 | 中国电力科学研究院 | A kind of AC extra high voltage voltage transformer error check system and method |
| CN107607897A (en)* | 2017-08-29 | 2018-01-19 | 国网湖南省电力公司 | A kind of voltage monitoring instrument on-line testing and prediction meanss and method |
| CN107942273A (en)* | 2017-10-24 | 2018-04-20 | 国网山西省电力公司电力科学研究院 | The accuracy calibration method of monitoring device is scurried into exchange in DC power system |
| CN108885247A (en)* | 2016-03-24 | 2018-11-23 | 韩国标准科学研究院 | Apparatus and method for calibrating DC voltage function |
| CN109633507A (en)* | 2018-11-30 | 2019-04-16 | 云南电网有限责任公司红河供电局 | Voltage monitoring instrument with self-diagnostic function |
| CN110018682A (en)* | 2019-05-14 | 2019-07-16 | 中国核动力研究设计院 | The Analog input mModule automated calibration system and method for nuclear safe level DCS |
| CN209247939U (en)* | 2018-11-16 | 2019-08-13 | 广东电网有限责任公司 | The point off apparatus and system of current transformer polarity verification |
| CN209400641U (en)* | 2018-11-16 | 2019-09-17 | 广东电网有限责任公司 | Current transformer polarity tester and system |
| CN110596633A (en)* | 2019-10-16 | 2019-12-20 | 上海市计量测试技术研究院 | Calibration system and calibration method of analog input type electronic transformer calibrator |
| CN110988520A (en)* | 2019-11-13 | 2020-04-10 | 广西电网有限责任公司 | A Time-Scale Error-Free Waveform Analysis Method |
| CN210833912U (en)* | 2019-12-31 | 2020-06-23 | 苏州迅鹏仪器仪表有限公司 | Temperature monitoring instrument and system capable of realizing automatic temperature calibration |
| CN112034407A (en)* | 2020-09-10 | 2020-12-04 | 云南电网有限责任公司电力科学研究院 | Power frequency alternating current voltage self-calibration unit and system |
| CN112162231A (en)* | 2020-09-30 | 2021-01-01 | 中国电力科学研究院有限公司 | Calibration system and method for electronic transformer calibrator |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135662B (en)* | 2006-08-30 | 2010-11-10 | 梅特勒-托利多仪器（上海）有限公司 | Electric potential analyse electric pole measuring method and apparatus |
| EP3055702B1 (en)* | 2013-10-09 | 2017-02-22 | ABB Research Ltd. | Current measurement device and method using a rogowski type current transducer |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4949029A (en)* | 1988-07-15 | 1990-08-14 | Schulmberger Industries, Inc. | Adjustment circuit and method for solid-state electricity meter |
| GB9005766D0 (en)* | 1990-03-14 | 1990-05-09 | British Telecomm | Calibrator |
| KR20000073113A (en)* | 1999-05-06 | 2000-12-05 | 장형서 | System and method for calibrating digital measuring instrument remotely using internet |
| DE102007047558A1 (en)* | 2007-09-28 | 2009-04-02 | Siemens Ag | Electronic switching unit for use in overcurrent tripping device of low-voltage circuit breaker, is coupled to calibration system over linking or transmission units such as communication bus, broadband Internet and interface |
| DE102011080874A1 (en)* | 2011-08-12 | 2013-02-14 | Bender Gmbh & Co. Kg | Electrical measuring device for measuring electrical currents, comprises connecting unit for connecting measuring current transformer, and calibration loop for calibration of measuring unit of measuring device |
| CN202210151U (en)* | 2011-09-21 | 2012-05-02 | 四川省电力公司广安电业局 | System for remote checking and monitoring for electric energy metering device |
| WO2014071753A1 (en)* | 2012-11-06 | 2014-05-15 | 国家电网公司 | Electronic transformer calibrator calibration device and method based on digital source |
| CN102981137A (en)* | 2012-11-27 | 2013-03-20 | 辽宁省电力有限公司电力科学研究院 | Remote intelligent verifying device and method of voltage monitor based on general packet radio service (GPRS)/global system for mobile communication (GSM) network |
| CN103558570A (en)* | 2013-11-06 | 2014-02-05 | 国家电网公司 | Portable voltage monitor field calibration tester |
| CN104181489A (en)* | 2014-09-04 | 2014-12-03 | 国家电网公司 | Calibration system for substation alternating-current sampling and measuring device |
| CN105785306A (en)* | 2015-03-23 | 2016-07-20 | 国家电网公司 | Voltage transformer on-line group calibration method and apparatus |
| CN204832369U (en)* | 2015-04-30 | 2015-12-02 | 航天科工深圳（集团）有限公司 | Detection apparatus for power equipment |
| CN104777368A (en)* | 2015-05-05 | 2015-07-15 | 成都电兴科技有限责任公司 | On-line monitoring instrument and detection method of alternating current variable-frequency ground resistor |
| CN204595099U (en)* | 2015-05-05 | 2015-08-26 | 成都电兴科技有限责任公司 | AC frequency conversion stake resistance on-line computing model |
| CN105092952A (en)* | 2015-08-12 | 2015-11-25 | 国家电网公司 | DC signal monitor |
| CN105842510A (en)* | 2016-03-17 | 2016-08-10 | 中国电力科学研究院 | Electronic transformer with self-calibration function and self-calibration method thereof |
| CN108885247A (en)* | 2016-03-24 | 2018-11-23 | 韩国标准科学研究院 | Apparatus and method for calibrating DC voltage function |
| CN105652230A (en)* | 2016-03-30 | 2016-06-08 | 国网电力科学研究院武汉南瑞有限责任公司 | Direct-current current transformer field checking device and method based on standard source |
| CN107607897A (en)* | 2017-08-29 | 2018-01-19 | 国网湖南省电力公司 | A kind of voltage monitoring instrument on-line testing and prediction meanss and method |
| CN107422291A (en)* | 2017-09-14 | 2017-12-01 | 中国电力科学研究院 | A kind of AC extra high voltage voltage transformer error check system and method |
| CN107942273A (en)* | 2017-10-24 | 2018-04-20 | 国网山西省电力公司电力科学研究院 | The accuracy calibration method of monitoring device is scurried into exchange in DC power system |
| CN209247939U (en)* | 2018-11-16 | 2019-08-13 | 广东电网有限责任公司 | The point off apparatus and system of current transformer polarity verification |
| CN209400641U (en)* | 2018-11-16 | 2019-09-17 | 广东电网有限责任公司 | Current transformer polarity tester and system |
| CN109633507A (en)* | 2018-11-30 | 2019-04-16 | 云南电网有限责任公司红河供电局 | Voltage monitoring instrument with self-diagnostic function |
| CN110018682A (en)* | 2019-05-14 | 2019-07-16 | 中国核动力研究设计院 | The Analog input mModule automated calibration system and method for nuclear safe level DCS |
| CN110596633A (en)* | 2019-10-16 | 2019-12-20 | 上海市计量测试技术研究院 | Calibration system and calibration method of analog input type electronic transformer calibrator |
| CN110988520A (en)* | 2019-11-13 | 2020-04-10 | 广西电网有限责任公司 | A Time-Scale Error-Free Waveform Analysis Method |
| CN210833912U (en)* | 2019-12-31 | 2020-06-23 | 苏州迅鹏仪器仪表有限公司 | Temperature monitoring instrument and system capable of realizing automatic temperature calibration |
| CN112034407A (en)* | 2020-09-10 | 2020-12-04 | 云南电网有限责任公司电力科学研究院 | Power frequency alternating current voltage self-calibration unit and system |
| CN112162231A (en)* | 2020-09-30 | 2021-01-01 | 中国电力科学研究院有限公司 | Calibration system and method for electronic transformer calibrator |
| Title |
|---|
| 基于GPRS技术的智能电压监测仪的研制;盛占石;刘赫;谭延良;孙俊;张兵;;仪表技术与传感器(08);全文* |
| 高性能GPS校准电压监测仪校验系统设计与开发;王保和;林宣渲;张克武;李利贤;赖振学;;电气时代(01);全文* |
| Publication number | Publication date |
|---|---|
| CN112924915A (en) | 2021-06-08 |
| Publication | Publication Date | Title |
|---|---|---|
| CN106646104A (en) | Power distribution network fault diagnosis method | |
| CN105510865A (en) | Power user onsite electric energy meter fault remote determination method | |
| CN106932714A (en) | Aircraft electrical box comprehensive detection system and detection method | |
| CN111505374A (en) | A two-in-one metering device and detection method with functions of mutual inspection and self-diagnosis | |
| CN112924915B (en) | Mutual calibration system and method for voltage monitors | |
| CN101718850A (en) | Automatic online detection device for RTU | |
| CN107783073A (en) | Electric Energy Tariff Point Metering Device operation management system, data acquisition and alarm method | |
| CN114705909A (en) | Self-checking system and self-checking method for real-time online monitoring device for electric energy metering | |
| CN118777704A (en) | An online automatic test method for resistance of grounding device in gas station | |
| CN118376867A (en) | Automatic testing device and method for power distribution terminal | |
| CN118884079A (en) | A method and system for monitoring power quality | |
| CN118444135A (en) | Relay detection method and equipment | |
| CN110398791A (en) | An intelligent base test box capable of self-diagnosis | |
| CN112928820B (en) | Automatic detection system and detection method for power distribution cabinet | |
| CN210270227U (en) | Intelligent base test box capable of realizing self diagnosis | |
| CN115808615A (en) | State detection method of isolating switch, isolating switch and storage medium | |
| CN223377365U (en) | Tail clamp with signal self-diagnosis capability | |
| CN110095747A (en) | A kind of distribution voltage and current sensor online method and system | |
| CN108427086A (en) | A kind of automatic gauge test system and method for electronic device | |
| CN115173554A (en) | Transformer equipment state overhauling and monitoring method | |
| KR102744447B1 (en) | Digital power meter of aberration accuracy and the self-monitoring | |
| CN212231165U (en) | A DC open-loop arc suppression device based on high-power IGBT | |
| CN214473345U (en) | Medium hydrogen monitoring devices in transformer oil | |
| KR102741167B1 (en) | Error correction and monitoring system for power meter | |
| CN221575470U (en) | Testing system of set top box |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |