CN110806552A - Wrong wiring type detection method for three-phase three-wire metering device - Google Patents

Abstract

The invention discloses a method for detecting the wrong wiring type of a three-phase three-wire metering device, which comprises the following steps: 1) detecting and judging the access phase sequence of the voltage of the three-phase three-wire metering device; 2) detecting and judging the access phase sequence of the current of the three-phase three-wire metering device; 3) and determining the wrong wiring type of the three-phase three-wire metering device. The invention improves the efficiency and the accuracy of judging the wrong wiring type by systematically researching the wrong wiring type and standardizing the judging process and the method of the voltage and current access phase sequence. The invention effectively avoids reversing the voltage and current wiring back and forth, and reduces the safety risk; the accuracy rate of judging the wrong wiring type is improved; the labor force of the metering personnel is saved; the wrong wiring processing time is reduced, and the electric quantity loss is saved for enterprises.

Description

Translated fromChinese

一种三相三线计量装置错接线类型检测方法A method for detecting wrong wiring type of three-phase three-wire metering device

技术领域technical field

本发明术语电能计量技术领域，特别涉及一种三相三线计量装置错接线类型检测方法。The present invention refers to the technical field of electric energy metering, and in particular, relates to a method for detecting the wrong wiring type of a three-phase three-wire metering device.

背景技术Background technique

三相电度表是用于测量三相交流电路中电源输出的电能的电度表。它的工作原理与单相电度表完全相同，只是在结构上采用多组驱动部件和固定在转轴上的多个铝盘的方式，以实现对三相电能的测量。A three-phase watt-hour meter is a watt-hour meter used to measure the electrical energy output by a power supply in a three-phase AC circuit. Its working principle is exactly the same as that of a single-phase watt-hour meter, except that it uses multiple sets of driving components and multiple aluminum disks fixed on the rotating shaft in structure to measure three-phase electric energy.

目前三相三线错接线类型查找主要是通过手工画向量图法确定电压、电流接入相序，进而确定错接线类型，因人而异，准确率有待提升，而且速度慢，不能快速的识别出错接线类型。At present, the three-phase three-wire misconnection type search is mainly based on the manual vector diagram method to determine the voltage and current access phase sequence, and then determine the misconnection type, which varies from person to person, and the accuracy needs to be improved. Wiring type.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于提供一种三相三线计量装置错接线类型检测方法，以提高错接线类型的判别效率和准确性，解决上述技术问题。The purpose of the present invention is to provide a method for detecting the wrong wiring type of a three-phase three-wire metering device, so as to improve the discrimination efficiency and accuracy of the wrong wiring type and solve the above technical problems.

为了实现上述目的，本发明采用如下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:

一种三相三线计量装置错接线类型检测方法，包括以下步骤：A method for detecting the wrong wiring type of a three-phase three-wire metering device, comprising the following steps:

1)、检测判断三相三线计量装置电压的接入相序；1), detect and judge the access phase sequence of the voltage of the three-phase three-wire metering device;

2)、检测判断三相三线计量装置电流的接入相序；2), detect and judge the access phase sequence of the current of the three-phase three-wire metering device;

3)、确定三相三线计量装置的错接线类型。3), determine the wrong wiring type of the three-phase three-wire metering device.

进一步的，步骤1)具体包括：Further, step 1) specifically includes:

1.1)、采集U_1n，U_2n，U_3n的值，和U₃₂相对于U₁₂的角度；1.1), collect the values of U_1n , U_2n , U_3n , and the angle of U₃₂ relative to U₁₂ ;

1.2)、判断U_1n，U_2n，U_3n中某一项的值为0，则该相位B相；1.2), judging that the value of a certain item in U_1n , U_2n and U_3n is 0, then the phase is phase B;

1.3)、判断U₃₂相对于U₁₂的角度是否为60°，如果是60°那么电压相序为逆相序，如果不是60°那么电压相序为正相序；1.3), judge whether the angle of U₃₂ relative to U₁₂ is 60°, if it is 60°, then the voltage phase sequence is the reverse phase sequence, if it is not 60°, then the voltage phase sequence is the positive phase sequence;

1.4)、综合步骤1.2)、1.3)的判断结果判断电压接入相序。1.4), judging the voltage access phase sequence based on the judgment results of steps 1.2) and 1.3).

进一步的，步骤2)具体包括：Further, step 2) specifically includes:

2.1)、根据步骤1.4)已判定的电压接入相序判断U_a、Ub、Uc的角度；2.1), judge the angles of U_a , Ub and Uc according to the voltage access phase sequence determined in step 1.4);

2.2)、根据U_a、Ub、Uc的角度判断出U₁₂的角度；采集I₁、I₂相对U₁₂的角度，综合U₁₂的角度，判断出I₁和I₂的角度；2.2), judge the angle of U12 according to the angle of_Ua , Ub, Uc; Collect the angle_ofI1 ,_I2 relative to_U12 , synthesize the angle of U12, judge the angle of_I1 and_I2;

2.3)、判断I₁-U_a的角度值是否小于30°；如果I₁-U_a的角度值小于30°，I₁接入相序为I_a；如果I₁-U_a的角度值大于或等于30°，继续跳转至步骤2.4)；2.3), judge whether the angle value of I₁ -U_a is less than 30°; if the angle value of I₁ -U_a is less than 30°, I₁ access phase sequence is I_a ; If the angle value of I₁ -U_a is greater than or equal to 30°, continue to jump to step 2.4);

2.4)、判断I₁-180-U_a的角度值是否小于30°；如果I₁-180-U_a的角度值小于30°，I₁接入相序为-I_a；如果I₁-180-U_a的角度值大于或等于30°，则跳转至步骤2.5)；2.4), judge whether the angle value of I_1-180 -U_a is less than 30°; if the angle value of I_1-180 -U_a is less than 30°, the I₁ access phase sequence is-I_a ; if I_1-180 -The angle value of U_a is greater than or equal to 30°, then jump to step 2.5);

2.5)、判断I₁-Uc的角度值是否小于30°；如果I₁-Uc的角度值小于30°，I₁接入相序为Ic；如果I₁-Uc的角度值大于或等于30°，则跳转至步骤2.6)；2.5), judge whether the angle value of I₁ -Uc is less than 30°; if the angle value of I₁ -Uc is less than 30°, the phase sequence of I₁ access is Ic; if the angle value of I₁ -Uc is greater than or equal to 30° , then jump to step 2.6);

2.6)、判断I₁-180-Uc的角度值是否小于30°；如果I₁-180-Uc的角度值小于30°，I₁接入相序为-Ic；2.6), judge whether the angle value of I₁ -180-Uc is less than 30°; if the angle value of I₁ -180-Uc is less than 30°, the phase sequence of I₁ access is -Ic;

2.7)、根据步骤2.3)和2.4)获得的I₁接入相序判断I₂-Uc的角度值否小于30°；如果I₂-Uc的角度值小于30°，I₂接入相序为Ic；如果I₂-Uc的角度值大于或等于30°，I₂接入相序为-Ic；根据步骤2.5)和2.6)获得的I₁接入相序判断I₂-Ua的角度值否小于30°；如果I₂-Ua的角度值小于30°，I₂接入相序为Ia；如果I₂-Ua的角度值大于或等于30°，I₂接入相序为-Ia。2.7), judge whether the angle value of I₂ -Uc is less than 30° according to the I₁ access phase sequence obtained in steps 2.3) and 2.4); if the angle value of I₂ -Uc is less than 30°, the I₂ access phase sequence is Ic; if the angle value of I₂ -Uc is greater than or equal to 30°, the I₂ access phase sequence is -Ic; according to the I₁ access phase sequence obtained in steps 2.5) and 2.6), judge whether the angle value of I₂ -Ua is not less than 30°; if the angle value of I₂ -Ua is less than 30°, the phase sequence of I₂ access is Ia; if the angle value of I₂ -Ua is greater than or equal to 30°, the phase sequence of I₂ access is -Ia.

2.8)、输出获得的I₁和I₂的接入相序。2.8), output the obtained access phase sequence of_I1 and_I2 .

进一步的，步骤3)具体包括：Further, step 3) specifically includes:

根据步骤1.4)确定的电压接入相序和步骤2.8)确定的I₁和I₂的接入相序，确定三相三线计量装置接线是否错误，如果错误其具体的错接线类型。According to the voltage access phase sequence determined in step 1.4) and the access phase sequence of I₁ and I₂ determined in step 2.8), determine whether the three-phase three-wire metering device is connected incorrectly, and if it is wrong, its specific wrong wiring type.

相对于现有技术，本发明具有以下有益效果：本发明通过系统的研究错接线类型，标准化电压、电流接入相序的判别流程和方法，从而提高错接线类型的判别效率和准确性。本发明有效的避免来回倒换电压和电流接线，减小了安全风险；提高了错接线类型的判断准确率；节省了计量人员的劳动力；减少了错接线处理时间，为企业节省了电量损失。Compared with the prior art, the present invention has the following beneficial effects: the present invention systematically studies the wrong wiring type, and standardizes the voltage and current access phase sequence discrimination process and method, thereby improving the discrimination efficiency and accuracy of the wrong wiring type. The invention effectively avoids switching voltage and current wiring back and forth, reduces safety risks, improves the judgment accuracy of wrong wiring type, saves labor of metering personnel, reduces wrong wiring processing time, and saves power loss for enterprises.

附图说明Description of drawings

构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，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 forming a part of the present application are used to provide further understanding of the present invention, and 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(a)至图1(f)为六种电压接入相序示意图；Figures 1(a) to 1(f) are schematic diagrams of the six voltage access phase sequences;

图2(a)至图2(h)为八种电流接入相序示意图；Figures 2(a) to 2(h) are schematic diagrams of eight current access phase sequences;

图3为电压接入相序判断流程图；Fig. 3 is the flow chart of voltage access phase sequence judgment;

图4为电流接入相序判断流程图。FIG. 4 is a flow chart of judging the current access phase sequence.

具体实施方式Detailed ways

下面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。The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the 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.

以下详细说明均是示例性的说明，旨在对本发明提供进一步的详细说明。除非另有指明，本发明所采用的所有技术术语与本申请所属领域的一般技术人员的通常理解的含义相同。本发明所使用的术语仅是为了描述具体实施方式，而并非意图限制根据本发明的示例性实施方式。The following detailed descriptions are all exemplary descriptions and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention.

1、分析所有可能的错接线类型1. Analyze all possible types of miswiring

三相三线一只表V/V接法接线的基本错误种类主要为电压相序和电流相序情况。电压相序指的是流进电能计量装置两元件的三根相线之间的顺序关系。电流相序指的是流进电能计量装置两元件的电流线之间的顺序关系。The basic types of errors in the V/V connection method of the three-phase three-wire one meter are mainly the voltage phase sequence and the current phase sequence. Voltage phase sequence refers to the sequential relationship between the three phase wires flowing into the two elements of an energy metering device. The current phase sequence refers to the sequential relationship between the current lines flowing into the two elements of the energy metering device.

2、电压接入相序2. Voltage access phase sequence

电压相序错接线是指A、B、C三相电压三根接线其中两根相互交叉或是三根相互轮换而造成的错误接线；Voltage phase sequence wrong wiring refers to the wrong wiring caused by the three-phase voltage of A, B, and C, two of which cross each other or the three are alternated with each other;

正确相序：ABC；Correct phase sequence: ABC;

错误相序：BAC；CBA；ACB；CAB；BCA；Incorrect phase sequence: BAC; CBA; ACB; CAB; BCA;

综上所述，正确电压相序有1种、错误电压相序有5种、电压相序共6种，具体情况如图1所示。To sum up, there are 1 correct voltage phase sequence, 5 incorrect voltage phase sequences, and 6 voltage phase sequences. The specific situation is shown in Figure 1.

3、电流接入相序3. Current access phase sequence

电流相序错接线是指A、C两相电流四根接线交叉等造成的错误接线。The wrong wiring of the current phase sequence refers to the wrong wiring caused by the intersection of the four wires of the A and C two-phase currents.

1)、正确电流相序：第一元件Ia，第二元件Ic，电流相序为：Ia、Ic。1), the correct current phase sequence: the first element Ia, the second element Ic, the current phase sequence is: Ia, Ic.

2)、错误电流相序：2), wrong current phase sequence:

第一元件-Ia，第二元件Ic，电流相序-Ia、Ic；The first element-Ia, the second element Ic, the current phase sequence-Ia, Ic;

第一元件Ia，第二元件-Ic，电流相序Ia、-Ic；The first element Ia, the second element -Ic, the current phase sequence Ia, -Ic;

第一元件-Ia，第二元件-Ic，电流相序-Ia、-Ic；The first element-Ia, the second element-Ic, the current phase sequence-Ia,-Ic;

第一元件Ic，第二元件Ia，电流相序Ic、Ia；The first element Ic, the second element Ia, the current phase sequence Ic, Ia;

第一元件-Ic，第二元件Ia，电流相序-Ic、Ia；The first element-Ic, the second element Ia, the current phase sequence-Ic, Ia;

第一元件Ic，第二元件-Ia，电流相序Ic、-Ia；The first element Ic, the second element -Ia, the current phase sequence Ic, -Ia;

第一元件-Ic，第二元件-Ia，电流相序-Ic、-Ia。The first element -Ic, the second element -Ia, the current phase sequence -Ic, -Ia.

综上所述，正确电流相序有1种、错误电流相序有7种、电流相序共8种，具体情况如图2(a)至图2(h)所示。To sum up, there are 1 correct current phase sequence, 7 incorrect current phase sequences, and 8 current phase sequences in total, as shown in Figure 2(a) to Figure 2(h).

综上所述，三相三线错接线类型主要是电压接入相序和电流接入相序的组合，有6*8＝48种。在上述48种接线中，只有电压接入相序为ABC，电流接入相序为Ia、Ic时为正确接线，其余均为错误接线。To sum up, the three-phase three-wire wrong wiring type is mainly a combination of voltage access phase sequence and current access phase sequence, and there are 6*8=48 types. Among the above 48 types of wiring, only the voltage access phase sequence is ABC, and the current access phase sequence is Ia, Ic, the correct wiring, and the rest are wrong wiring.

因此，本发明提供一种三相三线计量装置错接线类型检测方法，步骤如下：Therefore, the present invention provides a method for detecting the wrong wiring type of a three-phase three-wire metering device. The steps are as follows:

1)、检测判别电压的接入相序；1) Detect and determine the access phase sequence of the voltage;

2)、检测判断电流的接入相序；2), detect and judge the access phase sequence of the current;

3)、确定错接线类型。3), determine the wrong wiring type.

请参阅图3所示，步骤1)具体包括：Referring to Figure 3, step 1) specifically includes:

1.1)、采集U_1n，U_2n，U_3n的值，和U₃₂相对于U₁₂的角度；1.1), collect the values of U_1n , U_2n , U_3n , and the angle of U₃₂ relative to U₁₂ ;

1.2)、判断U_1n，U_2n，U_3n中某一项的值为0，则该相位B相；1.2), judging that the value of a certain item in U_1n , U_2n , U_3n is 0, then the phase is B phase;

1.3)、判断U₃₂相对于U₁₂的角度是否为60°，如果是60°那么电压相序为逆相序，如果不是60°那么电压相序为正相序；1.3), judge whether the angle of U₃₂ relative to U₁₂ is 60°, if it is 60°, then the voltage phase sequence is the reverse phase sequence, if it is not 60°, then the voltage phase sequence is the positive phase sequence;

1.4)、综合步骤1.2)、1.3)的判断结果判断电压接入相序。1.4), synthesizing the judgment results of steps 1.2) and 1.3) to judge the voltage access phase sequence.

请参阅图4所示，步骤2)具体包括：Referring to Figure 4, step 2) specifically includes:

2.1)、根据步骤1.4)已判定的电压接入相序判断U_a、Ub、Uc的角度；2.1), judge the angles of U_a , Ub and Uc according to the voltage access phase sequence determined in step 1.4);

2.2)、根据U_a、Ub、Uc的角度判断出U₁₂的角度；采集I₁、I₂相对U₁₂的角度，综合U₁₂的角度，判断出I₁和I₂的角度；2.2), judge the angle of U12 according to the angle of_Ua , Ub, Uc; Collect the angle_ofI1 ,_I2 relative to_U12 , synthesize the angle of U12, judge the angle of_I1 and_I2;

2.3)、判断I₁-U_a的角度值是否小于30°；如果I₁-U_a的角度值小于30°，I₁接入相序为I_a；如果I₁-U_a的角度值大于或等于30°，继续跳转至步骤2.4)；2.3), judge whether the angle value of I₁ -U_a is less than 30°; if the angle value of I₁ -U_a is less than 30°, I₁ access phase sequence is I_a ; If the angle value of I₁ -U_a is greater than or equal to 30°, continue to jump to step 2.4);

2.4)、判断I₁-180-U_a的角度值是否小于30°；如果I₁-180-U_a的角度值小于30°，I₁接入相序为-I_a；如果I₁-180-U_a的角度值大于或等于30°，则跳转至步骤2.5)；2.4), judge whether the angle value of I_1-180 -U_a is less than 30°; if the angle value of I_1-180 -U_a is less than 30°, the I₁ access phase sequence is-I_a ; if I_1-180 -The angle value of U_a is greater than or equal to 30°, then jump to step 2.5);

2.5)、判断I₁-Uc的角度值是否小于30°；如果I₁-Uc的角度值小于30°，I₁接入相序为Ic；如果I₁-Uc的角度值大于或等于30°，则跳转至步骤2.6)；2.5), judge whether the angle value of I₁ -Uc is less than 30°; if the angle value of I₁ -Uc is less than 30°, the phase sequence of I₁ access is Ic; if the angle value of I₁ -Uc is greater than or equal to 30° , then jump to step 2.6);

2.6)、判断I₁-180-Uc的角度值是否小于30°；如果I₁-180-Uc的角度值小于30°，I₁接入相序为-Ic；2.6), judge whether the angle value of I₁ -180-Uc is less than 30°; if the angle value of I₁ -180-Uc is less than 30°, the phase sequence of I₁ access is -Ic;

2.7)、根据步骤2.3)和2.4)获得的I₁接入相序判断I₂-Uc的角度值否小于30°；如果I₂-Uc的角度值小于30°，I₂接入相序为Ic；如果I₂-Uc的角度值大于或等于30°，I₂接入相序为-Ic；根据步骤2.5)和2.6)获得的I₁接入相序判断I₂-Ua的角度值否小于30°；如果I₂-Ua的角度值小于30°，I₂接入相序为Ia；如果I₂-Ua的角度值大于或等于30°，I₂接入相序为-Ia。2.7), judge whether the angle value of I₂ -Uc is less than 30° according to the I₁ access phase sequence obtained in steps 2.3) and 2.4); if the angle value of I₂ -Uc is less than 30°, the I₂ access phase sequence is Ic; if the angle value of I₂ -Uc is greater than or equal to 30°, the I₂ access phase sequence is -Ic; according to the I₁ access phase sequence obtained in steps 2.5) and 2.6), judge whether the angle value of I₂ -Ua is not less than 30°; if the angle value of I₂ -Ua is less than 30°, the phase sequence of I₂ access is Ia; if the angle value of I₂ -Ua is greater than or equal to 30°, the phase sequence of I₂ access is -Ia.

2.8)、输出获得的I₁和I₂的接入相序。2.8), output the obtained access phase sequence of_I1 and_I2 .

3)、根据步骤1.4)确定的电压接入相序和步骤2.8)确定的I₁和I₂的接入相序，确定三相三线计量装置接线是否错误，如果错误其具体的错接线类型。3) According to the voltage access phase sequence determined in step 1.4) and the access phase sequence of I₁ and I₂ determined in step 2.8), determine whether the three-phase three-wire metering device is wired incorrectly, and if it is incorrect, its specific wrong wiring type.

由技术常识可知，本发明可以通过其它的不脱离其精神实质或必要特征的实施方案来实现。因此，上述公开的实施方案，就各方面而言，都只是举例说明，并不是仅有的。所有在本发明范围内或在等同于本发明的范围内的改变均被本发明包含。It is known from the technical common sense that the present invention can be realized by other embodiments without departing from its spirit or essential characteristics. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims (4)

Translated fromChinese

1.一种三相三线计量装置错接线类型检测方法，其特征在于，包括以下步骤：1. a three-phase three-wire metering device wrong wiring type detection method, is characterized in that, comprises the following steps:1)、检测判断三相三线计量装置电压的接入相序；1), detect and judge the access phase sequence of the voltage of the three-phase three-wire metering device;2)、检测判断三相三线计量装置电流的接入相序；2), detect and judge the access phase sequence of the current of the three-phase three-wire metering device;3)、确定三相三线计量装置的错接线类型。3), determine the wrong wiring type of the three-phase three-wire metering device.2.根据权利要求1所述的一种三相三线计量装置错接线类型检测方法，其特征在于，步骤1)具体包括：2. a kind of three-phase three-wire metering device wrong wiring type detection method according to claim 1, is characterized in that, step 1) specifically comprises:1.1)、采集U_1n，U_2n，U_3n的值，和U₃₂相对于U₁₂的角度；1.1), collect the values of U_1n , U_2n , U_3n , and the angle of U₃₂ relative to U₁₂ ;1.2)、判断U_1n，U_2n，U_3n中某一项的值为0，则该相位B相；1.2), judging that the value of a certain item in U_1n , U_2n , U_3n is 0, then the phase is B phase;1.3)、判断U₃₂相对于U₁₂的角度是否为60°，如果是60°那么电压相序为逆相序，如果不是60°那么电压相序为正相序；1.3), judge whether the angle of U₃₂ relative to U₁₂ is 60°, if it is 60°, then the voltage phase sequence is the reverse phase sequence, if it is not 60°, then the voltage phase sequence is the positive phase sequence;1.4)、综合步骤1.2)、1.3)的判断结果判断电压接入相序。1.4), synthesizing the judgment results of steps 1.2) and 1.3) to judge the voltage access phase sequence.3.根据权利要求2所述的一种三相三线计量装置错接线类型检测方法，其特征在于，步骤2)具体包括：3. a kind of three-phase three-wire metering device wrong wiring type detection method according to claim 2, is characterized in that, step 2) specifically comprises:2.1)、根据步骤1.4)已判定的电压接入相序判断U_a、Ub、Uc的角度；2.1), judge the angles of U_a , Ub and Uc according to the voltage access phase sequence determined in step 1.4);2.2)、根据U_a、Ub、Uc的角度判断出U₁₂的角度；采集I₁、I₂相对U₁₂的角度，综合U₁₂的角度，判断出I₁和I₂的角度；2.2), judge the angle of U12 according to the angle of_Ua , Ub, Uc; Collect the angle_ofI1 ,_I2 relative to_U12 , synthesize the angle of U12, judge the angle of_I1 and_I2;2.3)、判断I₁-U_a的角度值是否小于30°；如果I₁-U_a的角度值小于30°，I₁接入相序为I_a；如果I₁-U_a的角度值大于或等于30°，继续跳转至步骤2.4)；2.3), judge whether the angle value of I₁ -U_a is less than 30°; if the angle value of I₁ -U_a is less than 30°, I₁ access phase sequence is I_a ; If the angle value of I₁ -U_a is greater than or equal to 30°, continue to jump to step 2.4);2.4)、判断I₁-180-U_a的角度值是否小于30°；如果I₁-180-U_a的角度值小于30°，I₁接入相序为-I_a；如果I₁-180-U_a的角度值大于或等于30°，则跳转至步骤2.5)；2.4), judge whether the angle value of I_1-180 -U_a is less than 30°; if the angle value of I_1-180 -U_a is less than 30°, the I₁ access phase sequence is-I_a ; if I_1-180 -The angle value of U_a is greater than or equal to 30°, then jump to step 2.5);2.5)、判断I₁-Uc的角度值是否小于30°；如果I₁-Uc的角度值小于30°，I₁接入相序为Ic；如果I₁-Uc的角度值大于或等于30°，则跳转至步骤2.6)；2.5), judge whether the angle value of I₁ -Uc is less than 30°; if the angle value of I₁ -Uc is less than 30°, the phase sequence of I₁ access is Ic; if the angle value of I₁ -Uc is greater than or equal to 30° , then jump to step 2.6);2.6)、判断I₁-180-Uc的角度值是否小于30°；如果I₁-180-Uc的角度值小于30°，I₁接入相序为-Ic；2.6), judge whether the angle value of I₁ -180-Uc is less than 30°; if the angle value of I₁ -180-Uc is less than 30°, the phase sequence of I₁ access is -Ic;2.7)、根据步骤2.3)和2.4)获得的I₁接入相序判断I₂-Uc的角度值否小于30°；如果I₂-Uc的角度值小于30°，I₂接入相序为Ic；如果I₂-Uc的角度值大于或等于30°，I₂接入相序为-Ic；根据步骤2.5)和2.6)获得的I₁接入相序判断I₂-Ua的角度值否小于30°；如果I₂-Ua的角度值小于30°，I₂接入相序为Ia；如果I₂-Ua的角度值大于或等于30°，I₂接入相序为-Ia；2.7), judge whether the angle value of I₂ -Uc is less than 30° according to the I₁ access phase sequence obtained in steps 2.3) and 2.4); if the angle value of I₂ -Uc is less than 30°, the I₂ access phase sequence is Ic; if the angle value of I₂ -Uc is greater than or equal to 30°, the I₂ access phase sequence is -Ic; according to the I₁ access phase sequence obtained in steps 2.5) and 2.6), judge whether the angle value of I₂ -Ua is not less than 30°; if the angle value of I₂ -Ua is less than 30°, the phase sequence of I₂ access is Ia; if the angle value of I₂ -Ua is greater than or equal to 30°, the phase sequence of I₂ access is -Ia;2.8)、输出获得的I₁和I₂的接入相序。2.8), output the obtained access phase sequence of_I1 and_I2 .4.根据权利要求3所述的一种三相三线计量装置错接线类型检测方法，其特征在于，步骤3)具体包括：4. a kind of three-phase three-wire metering device wrong wiring type detection method according to claim 3, is characterized in that, step 3) specifically comprises:根据步骤1.4)确定的电压接入相序和步骤2.8)确定的I₁和I₂的接入相序，确定三相三线计量装置接线是否错误，如果错误其具体的错接线类型。According to the voltage access phase sequence determined in step 1.4) and the access phase sequence of I₁ and I₂ determined in step 2.8), determine whether the three-phase three-wire metering device is connected incorrectly, and if it is wrong, its specific wrong wiring type.

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