CN112379161B - Alarm method for judging electricity stealing behavior - Google Patents

Alarm method for judging electricity stealing behavior Download PDF

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CN112379161B
CN112379161B CN202011283355.8A CN202011283355A CN112379161B CN 112379161 B CN112379161 B CN 112379161B CN 202011283355 A CN202011283355 A CN 202011283355A CN 112379161 B CN112379161 B CN 112379161B
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meter
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CN112379161A (en
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青志明
徐鸿春
向佳利
魏一汀
傅望
刘克恒
黄旭
青泓伶
潘云
李明聪
周川
吴明燕
黄学浩
刘军
汪洋
康维丽
傅鹏宇
杨征
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Technology and Skill Training Center of State Grid Chongqing Electric Power Co Ltd
State Grid Corp of China SGCC
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/061—Details of electronic electricity meters
    • G01R22/066—Arrangements for avoiding or indicating fraudulent use
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G01R22/061—Details of electronic electricity meters
    • G01R22/068—Arrangements for indicating or signaling faults
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings

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Abstract

本发明涉及能源领域，具体涉及一种判断窃电行为的报警方法，包括以下步骤：1）设置误差阈值，用于作为判断窃电行为的报警临界点，并设置高压电压标准值与低压电压标准值；2）设置各个互感器和变压器的变比值；3）非异常状态下，拟合温度‑电流对比曲线；4）现场采集用户端实时信息；5）根据步骤4）中现场采集的用户端实时信息判断用户端是否存在窃电行为。本发明可以结合电力企业的用电信息采集系统（如计量表等），通过现场采集的实时信息（如电流值、电压值、温度值等）检测用户端的实时用电状态，提高判断窃电行为的准确性，从而通过判断结果遏制窃电行为发生，降低窃电发生率，保障电网安全，保证了电力公司的经济效益。

Figure 202011283355

The present invention relates to the field of energy, in particular to an alarm method for judging electricity stealing behavior, comprising the following steps: 1) setting an error threshold as an alarm critical point for judging electricity stealing behavior, and setting a high-voltage voltage standard value and a low-voltage voltage standard 2) Set the transformation ratio of each transformer and transformer; 3) Fit the temperature-current comparison curve in the non-abnormal state; 4) Collect real-time information from the user terminal on site; 5) According to the user terminal collected on site in step 4) Real-time information to determine whether there is electricity stealing behavior at the user end. The present invention can be combined with the power consumption information collection system (such as meters, etc.) of electric power enterprises to detect the real-time power consumption status of the user end through the real-time information collected on site (such as current value, voltage value, temperature value, etc.), and improve the judgment of power theft behavior Accuracy, so as to curb the occurrence of electricity theft by judging the results, reduce the incidence of electricity theft, ensure the security of the power grid, and ensure the economic benefits of the power company.

Figure 202011283355

Description

一种判断窃电行为的报警方法An alarm method for judging electricity stealing behavior

技术领域technical field

本发明涉及能源领域，具体涉及一种判断窃电行为的报警方法。The invention relates to the field of energy, in particular to an alarm method for judging electricity stealing behavior.

背景技术Background technique

随着国民经济快速发展对能源需求越来越大，我国对能源的依赖性也将越来越高，电能作为我国重要能源之一，对经济的持续发展具有重要的作用。一些单位和个人将窃电作为获利手段，采取各种方法不计或少记电量，以达到不交或少交电费的目的，造成国家电能大量流失，损失惊人。With the rapid development of the national economy, the demand for energy is increasing, and my country's dependence on energy will also become higher and higher. Electric energy, as one of the important energy sources in my country, plays an important role in the sustainable development of the economy. Some units and individuals use electricity stealing as a means of profit, and adopt various methods to ignore or record less electricity, so as to achieve the purpose of not paying or paying less electricity bills, resulting in a large loss of national electric energy and staggering losses.

窃电问题一直困扰着各级供电部门，虽然已从多方面加强了管理措施，但其手段层出不穷，给反窃电工作带来很大难度，尤其是一些工商业用户采取非法手段改造或破坏计量设备进行窃电，查处难、取证难、核查效率慢、甚至高科技隐蔽窃电的特点给供电企业造成了很大的经济损失。The problem of stealing electricity has been plagued by power supply departments at all levels. Although management measures have been strengthened in many ways, the means are emerging in an endless stream, which brings great difficulties to the anti-stealing work. In particular, some industrial and commercial users have adopted illegal means to modify or destroy metering equipment. Stealing electricity is difficult to investigate, obtain evidence, slow verification efficiency, and even high-tech concealed electricity theft has caused great economic losses to power supply companies.

尤其是专变和低压台区用户的窃电行为，不仅造成供电企业经济巨大损失，而且存在巨大的安全隐患，影响了社会的安全稳定，尤其是当前窃电方式日趋复杂，隐蔽性强、取证难、查找难、核实难，用电检查人员不仅需要熟悉当前各种窃电的行为特征，还需要掌握反窃电技术手段，提升反窃电能力。In particular, the power stealing behavior of users in special transformers and low-voltage station areas not only causes huge economic losses to power supply companies, but also poses huge safety hazards, which affects the security and stability of society. Difficult, difficult to find, and difficult to verify. Electricity inspection personnel not only need to be familiar with the current behavioral characteristics of various electricity thefts, but also need to master anti-theft technologies and methods to improve anti-theft capabilities.

发明内容Contents of the invention

本发明的目的是针对现有技术对应的不足，提供一种判断窃电行为的报警方法，供电企业的工作人员可以利用本发明，结合供电企业的用电信息采集系统（如计量表等），通过现场采集的实时信息（如电流值、电压值、温度值等）检测用户端的实时用电状态，提高判断窃电行为的准确性，从而通过判断结果遏制窃电行为发生，降低窃电发生率，保障电网安全，保证了供电企业的经济效益。The purpose of the present invention is to provide an alarm method for judging electricity theft behavior in response to the corresponding deficiencies in the prior art. The staff of the power supply enterprise can use the present invention, combined with the power consumption information collection system (such as a meter, etc.) of the power supply enterprise, Detect the real-time power consumption status of the user terminal through the real-time information collected on site (such as current value, voltage value, temperature value, etc.), improve the accuracy of judging the behavior of stealing electricity, so as to curb the occurrence of electricity theft and reduce the incidence of electricity theft through the judgment results , to ensure the security of the power grid, and to ensure the economic benefits of power supply companies.

本发明的目的是采用下述方案实现的：一种判断窃电行为的报警方法，包括以下步骤：The object of the present invention is to adopt following scheme to realize: a kind of method of reporting to the police that judges electricity stealing behavior, comprises the following steps:

1）设置电流误差阈值、电压误差阈值、温度误差阈值，用于作为判断窃电行为的报警临界点，并设置高压电压标准值与低压电压标准值；1) Set the current error threshold, voltage error threshold, and temperature error threshold, which are used as the alarm critical point for judging electricity stealing behavior, and set the high voltage voltage standard value and low voltage voltage standard value;

2）设置高压计量表二次电流回路中的高压电流互感器与高压计量表二次电压回路中的高压电压互感器的变比值、低压计量表二次电流回路中的低压电流互感器的变比值，以及变压器的变比值；2) Set the transformation ratio of the high-voltage current transformer in the secondary current circuit of the high-voltage meter and the high-voltage voltage transformer in the secondary voltage circuit of the high-voltage meter, and the transformation ratio of the low-voltage current transformer in the secondary current circuit of the low-voltage meter , and the transformation ratio of the transformer;

3）非异常状态下，拟合温度-电流对比曲线：3) In the non-abnormal state, fit the temperature-current comparison curve:

① 在用户端变压器的总线控制断路器的输出端或者输入端设置温度测试点；① Set a temperature test point at the output or input of the bus control circuit breaker of the transformer at the user end;

② 采集温度测试点若干时刻的温度值和对应的电流值，拟合温度-电流对比曲线，用于表示温度测试点某一时段的温度值以及电流值的对应关系；② Collect the temperature value and the corresponding current value at several moments of the temperature test point, and fit the temperature-current comparison curve, which is used to represent the corresponding relationship between the temperature value and the current value of the temperature test point for a certain period of time;

4）现场采集用户端实时信息：4) On-site collection of client real-time information:

所述用户端实时信息包括用户端变压器的高压侧电流值、低压总线负荷电流值，高压计量表电流值、高压计量表二次电流回路的电流值、低压计量表电流值、低压计量表二次电流回路的电流值、高压计量表电压值、低压计量表电压值；The user end real-time information includes the high voltage side current value of the user end transformer, the low voltage bus load current value, the current value of the high voltage meter, the current value of the secondary current loop of the high voltage meter, the current value of the low voltage meter, and the secondary current value of the low voltage meter. The current value of the current loop, the voltage value of the high-voltage meter, and the voltage value of the low-voltage meter;

5）根据步骤4）中现场采集的用户端实时信息判断用户端是否存在窃电行为：5) According to the real-time information of the user terminal collected on site in step 4), it is judged whether there is electricity stealing behavior at the user terminal:

5-1）电流判断：5-1) Current judgment:

若下列任一条件成立，则电流异常并报警：If any of the following conditions is true, the current is abnormal and an alarm is given:

① 高压计量表电流值与高压计量表二次电流回路的电流值之差的绝对值大于电流误差阈值；① The absolute value of the difference between the current value of the high-voltage meter and the current value of the secondary current loop of the high-voltage meter is greater than the current error threshold;

② 低压计量表电流值与低压计量表二次电流回路的电流值之差的绝对值大于电流误差阈值；② The absolute value of the difference between the current value of the low-voltage meter and the current value of the secondary current circuit of the low-voltage meter is greater than the current error threshold;

③ 高压计量表电流值或高压计量表二次电流回路的电流值与高压电流互感器的变比值的乘积减去低压总线负荷电流值的差的绝对值大于电流误差阈值；③ The absolute value of the difference between the current value of the high-voltage meter or the current value of the secondary current loop of the high-voltage meter and the transformation ratio of the high-voltage current transformer minus the load current value of the low-voltage bus is greater than the current error threshold;

④ 低压计量表电流值或低压计量表二次电流回路的电流值与低压电流互感器的变比值的乘积减去低压总线负荷电流值的差的绝对值大于电流误差阈值；④ The absolute value of the current value of the low-voltage meter or the current value of the secondary current loop of the low-voltage meter and the transformation ratio value of the low-voltage current transformer minus the difference between the load current value of the low-voltage bus is greater than the current error threshold;

⑤ 低压总线负荷电流值除以变压器变比值得到的商减去高压侧电流值得到的差的绝对值大于电流误差阈值；⑤ The absolute value of the difference obtained by dividing the load current value of the low-voltage bus by the transformation ratio of the transformer minus the current value of the high-voltage side is greater than the current error threshold;

5-2）电压判断：5-2) Voltage judgment:

若下列任一条件成立，则电压异常并报警：If any of the following conditions is met, the voltage is abnormal and an alarm is given:

① 高压计量表二次电压回路的电压值与高压电压标准值之差的绝对值大于电压误差阈值；① The absolute value of the difference between the voltage value of the secondary voltage circuit of the high-voltage meter and the high-voltage voltage standard value is greater than the voltage error threshold;

② 低压计量表二次电压回路的电压值与低压电压标准值之差的绝对值大于电压误差阈值；② The absolute value of the difference between the voltage value of the secondary voltage circuit of the low-voltage meter and the standard value of the low-voltage voltage is greater than the voltage error threshold;

5-3）温度判断：5-3) Temperature judgment:

① 采集步骤3）所述温度测试点的实时电流值，代入温度-电流对比曲线，得到实时电流值对应的正常温度值；① Collect the real-time current value of the temperature test point in step 3), and substitute it into the temperature-current comparison curve to obtain the normal temperature value corresponding to the real-time current value;

② 采集所述温度测试点的实时温度值，若实时温度值与正常温度值之差的绝对值大于温度误差阈值，则温度异常并报警。② Collect the real-time temperature value of the temperature test point. If the absolute value of the difference between the real-time temperature value and the normal temperature value is greater than the temperature error threshold, the temperature will be abnormal and an alarm will be issued.

若高压计量表电流值与高压电流互感器的变比值的乘积减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是高压计量表的二次电流回路异常。而异常产生的原因，可能是高压电流互感器一次侧、二次侧有分流或高压电流互感器变比值改变；也可能是在高压电流互感器的前段存在额外的电路分流绕过高压计量表的二次电流回路。If the absolute value of the difference between the current value of the high-voltage meter and the transformation ratio of the high-voltage current transformer minus the current value of the high-voltage side is greater than the current error threshold, the cause of the abnormal current is the abnormality of the secondary current circuit of the high-voltage meter. The reason for the abnormality may be that there is a shunt on the primary side and secondary side of the high-voltage current transformer or the change in the transformation ratio of the high-voltage current transformer; it may also be that there is an additional circuit shunt bypassing the high-voltage meter in the front of the high-voltage current transformer. secondary current loop.

若高压计量表二次电流回路的电流值与高压电流互感器的变比值的乘积减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是高压计量表的二次电流回路中的高压电流互感器异常。而异常产生的原因，可能是高压计量表二次电流回路中的高压电流互感器的变比值发生改变、或高压计量表的二次电流回路存在分流，或高压计量表的二次电流回路断路等。If the absolute value of the difference between the current value of the secondary current circuit of the high-voltage meter and the transformation ratio of the high-voltage current transformer minus the current value of the high-voltage side is greater than the current error threshold, the cause of the abnormal current is the secondary current of the high-voltage meter. The high-voltage current transformer in the circuit is abnormal. The reason for the abnormality may be that the transformation ratio of the high-voltage current transformer in the secondary current circuit of the high-voltage meter changes, or there is a shunt in the secondary current circuit of the high-voltage meter, or the secondary current circuit of the high-voltage meter is disconnected, etc. .

若低压计量表电流值与低压电流互感器的变比值的乘积除以变压器变比值得到的商减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是低压计量表的二次电流回路异常。而异常产生的原因，可能是在低压电流互感器一次侧、二次侧有分流或低压电流互感器变比值改变。If the absolute value of the difference between the product of the current value of the low-voltage meter and the transformation ratio of the low-voltage current transformer divided by the transformation ratio of the transformer minus the current value of the high-voltage side is greater than the current error threshold, the cause of the abnormal current is the low-voltage meter. The secondary current circuit is abnormal. The reason for the abnormality may be that there is a shunt on the primary side and secondary side of the low-voltage current transformer or the change of the transformation ratio of the low-voltage current transformer.

若低压总线负荷电流值除以变压器变比值得到的商减去高压侧电流值得到的差小于电流误差阈值，则电流异常的原因是用户端变压器的总线控制断路器的输出端有分流。If the difference obtained by dividing the load current value of the low-voltage bus by the transformation ratio of the transformer minus the current value of the high-voltage side is less than the current error threshold, the cause of the abnormal current is that there is a shunt at the output end of the bus control circuit breaker of the user-side transformer.

若低压计量表二次电流回路的电流值与低压电流互感器的变比值的乘积除以变压器变比值得到的商减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是低压计量表的二次电流回路中的低压电流互感器异常。If the absolute value of the product of the current value of the secondary current circuit of the low-voltage meter and the transformation ratio of the low-voltage current transformer divided by the transformation ratio of the transformer minus the current value of the high-voltage side is greater than the current error threshold, the cause of the abnormal current It is the abnormality of the low-voltage current transformer in the secondary current circuit of the low-voltage meter.

当高压/低压计量表二次电流回路的电流值与高压/低压计量表电流值之差的绝对值大于电流误差阈值时，高压/低压计量表或接线盒的接线端子异常。而异常产生的原因，可能是高压/低压计量表内部或接线端子盒分流、分压或断路等；When the absolute value of the difference between the current value of the secondary current loop of the high-voltage/low-voltage meter and the current value of the high-voltage/low-voltage meter is greater than the current error threshold, the connection terminal of the high-voltage/low-voltage meter or the junction box is abnormal. The reason for the abnormality may be the shunt, voltage division or open circuit inside the high-voltage/low-voltage meter or the terminal box;

若高压计量表二次电压回路的电压值与高压电压标准值之差的绝对值大于电压误差阈值，则高压计量表的二次电压回路或者该二次电压回路中的高压电压互感器异常。If the absolute value of the difference between the voltage value of the secondary voltage circuit of the high-voltage meter and the standard value of the high-voltage voltage is greater than the voltage error threshold, the secondary voltage circuit of the high-voltage meter or the high-voltage voltage transformer in the secondary voltage circuit is abnormal.

若低压计量表二次电压回路的电压值与低压电压标准值之差的绝对值大于电压误差阈值，则低压计量表的二次电压回路异常。If the absolute value of the difference between the voltage value of the secondary voltage circuit of the low-voltage meter and the standard value of the low-voltage voltage is greater than the voltage error threshold, the secondary voltage circuit of the low-voltage meter is abnormal.

所述高压电压标准值为100V，所述低压电压标准值为220V。The standard value of the high voltage voltage is 100V, and the standard value of the low voltage voltage is 220V.

本发明的优点在于，用电检查人员可以针对现有的专变和低压台区用户日趋复杂的窃电行为特征，根据本发明的判断窃电的方法，判断供电系统用户端的用电状态是否存在异常，根据判断结果作出相应整改措施，降低窃电的安全隐患，减少供电企业的经济损失，维护社会的安全稳定。The advantage of the present invention is that, according to the method for judging electricity stealing of the present invention, the electricity inspectors can judge whether the power consumption status of the user end of the power supply system exists in view of the existing special transformer and the increasingly complex electricity stealing behavior characteristics of users in low-voltage station areas. Abnormal, according to the judgment results to make corresponding rectification measures to reduce the potential safety hazards of electricity theft, reduce the economic losses of power supply enterprises, and maintain social security and stability.

附图说明Description of drawings

图1为本发明的流程图。Fig. 1 is a flowchart of the present invention.

具体实施方式Detailed ways

如图1所示，一种判断窃电行为的报警方法，包括以下步骤：As shown in Figure 1, a kind of alarm method for judging electricity stealing behavior comprises the following steps:

1）设置电流误差阈值、电压误差阈值、温度误差阈值，用于作为判断窃电行为的报警临界点，并设置高压电压标准值与低压电压标准值；1) Set the current error threshold, voltage error threshold, and temperature error threshold, which are used as the alarm critical point for judging electricity stealing behavior, and set the high voltage voltage standard value and low voltage voltage standard value;

2）设置高压计量表二次电流回路中的高压电流互感器与高压计量表二次电压回路中的高压电压互感器的变比值、低压计量表二次电流回路中的低压电流互感器的变比值，以及变压器的变比值；2) Set the transformation ratio of the high-voltage current transformer in the secondary current circuit of the high-voltage meter and the high-voltage voltage transformer in the secondary voltage circuit of the high-voltage meter, and the transformation ratio of the low-voltage current transformer in the secondary current circuit of the low-voltage meter , and the transformation ratio of the transformer;

3）非异常状态下，拟合温度-电流对比曲线：3) In the non-abnormal state, fit the temperature-current comparison curve:

① 在用户端变压器的总线控制断路器的输出端或者输入端设置温度测试点，本实施例中，可以设置多个温度测试点，以增加提高判断异常的准确性；① Set a temperature test point at the output or input end of the bus control circuit breaker of the user-side transformer. In this embodiment, multiple temperature test points can be set to increase the accuracy of judging abnormalities;

② 采集温度测试点若干时刻的温度值和对应的电流值，拟合温度-电流对比曲线，用于表示温度测试点某一时段的温度值以及电流值的对应关系，采集温度值时，应在同一环境温度（如常温）下进行采集；采集电流值也是应该在同一外界条件下进行采集；② Collect the temperature value and the corresponding current value at several moments of the temperature test point, and fit the temperature-current comparison curve, which is used to represent the corresponding relationship between the temperature value and the current value at a certain period of time at the temperature test point. When collecting the temperature value, it should be Collect at the same ambient temperature (such as normal temperature); the collected current value should also be collected under the same external conditions;

4）现场采集用户端实时信息：4) On-site collection of client real-time information:

所述用户端实时信息包括用户端变压器的高压侧电流值、低压总线负荷电流值，高压计量表电流值、高压计量表二次电流回路的电流值、低压计量表电流值、低压计量表二次电流回路的电流值、高压计量表电压值、低压计量表电压值；The user end real-time information includes the high voltage side current value of the user end transformer, the low voltage bus load current value, the current value of the high voltage meter, the current value of the secondary current loop of the high voltage meter, the current value of the low voltage meter, and the secondary current value of the low voltage meter. The current value of the current loop, the voltage value of the high-voltage meter, and the voltage value of the low-voltage meter;

本实施例中，现场采集用户端实时信息的频率为每15分钟一次。In this embodiment, the frequency of on-site collection of real-time information from the client is once every 15 minutes.

5）根据步骤4）中现场采集的用户端实时信息判断用户端是否存在窃电行为：5) According to the real-time information of the user terminal collected on site in step 4), it is judged whether there is electricity stealing behavior at the user terminal:

5-1）电流判断：5-1) Current judgment:

若下列任一条件成立，则电流异常并报警：If any of the following conditions is true, the current is abnormal and an alarm is given:

① 高压计量表电流值与高压计量表二次电流回路的电流值之差的绝对值大于电流误差阈值；① The absolute value of the difference between the current value of the high-voltage meter and the current value of the secondary current circuit of the high-voltage meter is greater than the current error threshold;

② 低压计量表电流值与低压计量表二次电流回路的电流值之差的绝对值大于电流误差阈值；② The absolute value of the difference between the current value of the low-voltage meter and the current value of the secondary current circuit of the low-voltage meter is greater than the current error threshold;

③ 高压计量表电流值或高压计量表二次电流回路的电流值与高压电流互感器的变比值的乘积减去低压总线负荷电流值的差的绝对值大于电流误差阈值；③ The absolute value of the difference between the current value of the high-voltage meter or the current value of the secondary current loop of the high-voltage meter and the transformation ratio of the high-voltage current transformer minus the load current value of the low-voltage bus is greater than the current error threshold;

④ 低压计量表电流值或低压计量表二次电流回路的电流值与低压电流互感器的变比值的乘积减去低压总线负荷电流值的差的绝对值大于电流误差阈值；④ The absolute value of the current value of the low-voltage meter or the current value of the secondary current loop of the low-voltage meter and the transformation ratio value of the low-voltage current transformer minus the difference between the load current value of the low-voltage bus is greater than the current error threshold;

⑤ 低压总线负荷电流值除以变压器变比值得到的商减去高压侧电流值得到的差的绝对值大于电流误差阈值；⑤ The absolute value of the difference obtained by dividing the load current value of the low-voltage bus by the transformation ratio of the transformer minus the current value of the high-voltage side is greater than the current error threshold;

若经判断电流异常并报警，通过下面的方法进一步判断异常产生的原因：If it is judged that the current is abnormal and an alarm is given, the cause of the abnormality can be further judged by the following methods:

① 若高压计量表电流值与高压电流互感器的变比值的乘积减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是高压计量表的二次电流回路异常。而异常产生的原因，可能是高压电流互感器一次侧、二次侧有分流或高压电流互感器变比值改变；也可能是在高压电流互感器的前段存在额外的电路分流绕过高压计量表的二次电流回路。① If the absolute value of the difference between the current value of the high-voltage meter and the transformation ratio of the high-voltage current transformer minus the current value of the high-voltage side is greater than the current error threshold, the cause of the abnormal current is the abnormality of the secondary current circuit of the high-voltage meter. The reason for the abnormality may be that there is a shunt on the primary side and secondary side of the high-voltage current transformer or the change in the transformation ratio of the high-voltage current transformer; it may also be that there is an additional circuit shunt bypassing the high-voltage meter in the front of the high-voltage current transformer. secondary current loop.

② 若高压计量表二次电流回路的电流值与高压电流互感器的变比值的乘积减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是高压计量表的二次电流回路中的高压电流互感器异常。而异常产生的原因，可能是高压计量表二次电流回路中的高压电流互感器的变比值发生改变、或高压计量表的二次电流回路存在分流，或高压计量表的二次电流回路断路等。② If the absolute value of the difference between the current value of the secondary current circuit of the high-voltage meter and the transformation ratio of the high-voltage current transformer minus the current value of the high-voltage side is greater than the current error threshold, the cause of the abnormal current is the secondary current of the high-voltage meter. The high voltage current transformer in the current loop is abnormal. The reason for the abnormality may be that the transformation ratio of the high-voltage current transformer in the secondary current circuit of the high-voltage meter changes, or there is a shunt in the secondary current circuit of the high-voltage meter, or the secondary current circuit of the high-voltage meter is disconnected, etc. .

③ 若低压计量表电流值与低压电流互感器的变比值的乘积除以变压器变比值得到的商减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是低压计量表的二次电流回路异常。而异常产生的原因，可能是在低压电流互感器一次侧、二次侧有分流或低压电流互感器变比值改变。③ If the absolute value of the difference between the product of the current value of the low-voltage meter and the transformation ratio of the low-voltage current transformer divided by the transformation ratio of the transformer minus the current value of the high-voltage side is greater than the current error threshold, the cause of the abnormal current is the low-voltage meter The secondary current loop is abnormal. The reason for the abnormality may be that there is a shunt on the primary side and secondary side of the low-voltage current transformer or the change of the transformation ratio of the low-voltage current transformer.

④ 若低压总线负荷电流值除以变压器变比值得到的商减去高压侧电流值得到的差小于电流误差阈值，则电流异常的原因是用户端变压器的总线控制断路器的输出端有分流。④ If the difference obtained by dividing the load current value of the low-voltage bus by the transformation ratio of the transformer minus the current value of the high-voltage side is less than the current error threshold, the cause of the abnormal current is that there is a shunt at the output end of the bus control circuit breaker of the transformer at the user end.

⑤ 若低压计量表二次电流回路的电流值与低压电流互感器的变比值的乘积除以变压器变比值得到的商减去高压侧电流值的差的绝对值大于电流误差阈值，则电流异常的原因是低压计量表的二次电流回路中的低压电流互感器异常。⑤ If the absolute value of the difference between the current value of the secondary current circuit of the low-voltage meter and the transformation ratio of the low-voltage current transformer divided by the transformation ratio of the transformer minus the current value of the high-voltage side is greater than the current error threshold, the abnormal current The reason is that the low-voltage current transformer in the secondary current loop of the low-voltage meter is abnormal.

⑥ 当高压/低压计量表二次电流回路的电流值与高压/低压计量表电流值之差的绝对值大于电流误差阈值时，高压/低压计量表或接线盒的接线端子异常。而异常产生的原因，可能是高压/低压计量表内部或接线端子盒分流、分压或断路等；⑥ When the absolute value of the difference between the current value of the secondary current circuit of the high-voltage/low-voltage meter and the current value of the high-voltage/low-voltage meter is greater than the current error threshold, the connection terminal of the high-voltage/low-voltage meter or the junction box is abnormal. The reason for the abnormality may be the shunt, voltage division or open circuit inside the high-voltage/low-voltage meter or the terminal box;

5-2）电压判断：5-2) Voltage judgment:

若下列任一条件成立，则电压异常并报警：If any of the following conditions is met, the voltage is abnormal and an alarm is given:

① 高压计量表二次电压回路的电压值与高压电压标准值之差的绝对值大于电压误差阈值；① The absolute value of the difference between the voltage value of the secondary voltage circuit of the high-voltage meter and the high-voltage voltage standard value is greater than the voltage error threshold;

② 低压计量表二次电压回路的电压值与低压电压标准值之差的绝对值大于电压误差阈值；② The absolute value of the difference between the voltage value of the secondary voltage circuit of the low-voltage meter and the standard value of the low-voltage voltage is greater than the voltage error threshold;

本实施例中，设置高压电压标准值为100V，低压电压标准值为220V。In this embodiment, the standard value of the high voltage voltage is set to 100V, and the standard value of the low voltage voltage is set to 220V.

若经判断电压异常并报警，通过下面的方法进一步判断异常产生的原因：If it is judged that the voltage is abnormal and an alarm is given, the cause of the abnormality can be further judged by the following methods:

① 若高压计量表二次电压回路的电压值与高压电压标准值之差的绝对值大于电压误差阈值，则高压计量表的二次电压回路或者该二次电压回路中的高压电压互感器异常。① If the absolute value of the difference between the voltage value of the secondary voltage circuit of the high-voltage meter and the standard value of the high-voltage voltage is greater than the voltage error threshold, the secondary voltage circuit of the high-voltage meter or the high-voltage voltage transformer in the secondary voltage circuit is abnormal.

② 若低压计量表二次电压回路的电压值与低压电压标准值之差的绝对值大于电压误差阈值，则低压计量表的二次电压回路异常。② If the absolute value of the difference between the voltage value of the secondary voltage circuit of the low-voltage meter and the standard value of the low-voltage voltage is greater than the voltage error threshold, the secondary voltage circuit of the low-voltage meter is abnormal.

5-3）温度判断：5-3) Temperature judgment:

① 采集步骤3）所述温度测试点的实时电流值，代入温度-电流对比曲线，得到实时电流值对应的正常温度值；① Collect the real-time current value of the temperature test point in step 3), and substitute it into the temperature-current comparison curve to obtain the normal temperature value corresponding to the real-time current value;

② 采集所述温度测试点的实时温度值，若实时温度值与正常温度值之差的绝对值大于温度误差阈值，则温度异常并报警。② Collect the real-time temperature value of the temperature test point. If the absolute value of the difference between the real-time temperature value and the normal temperature value is greater than the temperature error threshold, the temperature will be abnormal and an alarm will be issued.

上述现场采集的用户端实时信息可以通过电力公司的工作人员现场用设备采集后，通过存储卡上传到上位机（如计算机等），或者通过云平台对用户端的用电行为进行判断，一旦发现长时间出现用电异常，则可派工作人员对该用户端进行检查，若发现有用户私自搭接的违规电路，则对该用户提出整改通知书，勒令整改，甚至强制拆除。The above-mentioned on-site real-time information of the client can be collected by the staff of the power company on-site, and then uploaded to the host computer (such as a computer) through the memory card, or judge the electricity consumption behavior of the client through the cloud platform. If there is an abnormality in electricity consumption at any time, staff can be sent to check the user terminal. If an illegal circuit is found to be connected by the user privately, a rectification notice will be issued to the user, ordering rectification, or even forced demolition.

以上所述仅为本发明的优选实施例，并不用于限制本发明，本领域的技术人员在不脱离本发明的精神的前提提下，对本发明进行的改动均落入本发明的保护范围。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any changes made by those skilled in the art to the present invention fall within the protection scope of the present invention without departing from the spirit of the present invention.

Claims (10)

1. An alarm method for judging electricity stealing behavior is characterized by comprising the following steps:
1) Setting a current error threshold, a voltage error threshold and a temperature error threshold which are used as alarm critical points for judging electricity stealing behaviors, and setting a high-voltage standard value and a low-voltage standard value;
2) Setting a transformation ratio value of a high-voltage current transformer in a secondary current loop of the high-voltage meter and a high-voltage transformer in a secondary voltage loop of the high-voltage meter, a transformation ratio value of a low-voltage current transformer in a secondary current loop of the low-voltage meter and a transformation ratio value of a user-side transformer;
3) In the non-abnormal state, a temperature-current contrast curve is fitted:
(1) setting a temperature test point at the output end or the input end of a bus control circuit breaker of a user side transformer;
(2) collecting temperature values and corresponding current values of the temperature test points at a plurality of moments, and fitting a temperature-current comparison curve for representing the corresponding relation between the temperature values and the current values of the temperature test points at a certain time period;
4) Acquiring real-time information of a user side on site:
the user side real-time information comprises a high-voltage side current value and a low-voltage bus load current value of a user side transformer, a high-voltage meter current value, a high-voltage meter secondary current loop current value, a low-voltage meter secondary current loop current value, a high-voltage meter voltage value and a low-voltage meter voltage value;
5) Judging whether the user side has electricity stealing behavior according to the user side real-time information collected on site in the step 4):
5-1) judging current:
if any one of the following conditions is met, the current is abnormal and an alarm is given:
(1) the absolute value of the difference between the current value of the high-voltage meter and the current value of the secondary current loop of the high-voltage meter is greater than the current error threshold value;
(2) the absolute value of the difference between the current value of the low-voltage meter and the current value of the secondary current loop of the low-voltage meter is larger than the current error threshold value;
(3) the absolute value of the difference obtained by subtracting the load current value of the low-voltage bus from the product of the current value of the high-voltage meter or the secondary current loop of the high-voltage meter and the variable ratio of the high-voltage current transformer is greater than the current error threshold;
(4) the absolute value of the difference obtained by subtracting the load current value of the low-voltage bus from the product of the current value of the low-voltage meter or the secondary current loop of the low-voltage meter and the variable ratio of the low-voltage current transformer is greater than the current error threshold;
(5) the absolute value of the difference obtained by subtracting the high-voltage side current value from the quotient obtained by dividing the low-voltage bus load current value by the transformer variable ratio value is larger than the current error threshold value;
5-2) voltage judgment:
if any one of the following conditions is met, the voltage is abnormal and an alarm is given:
(1) the absolute value of the difference between the voltage value of the secondary voltage loop of the high-voltage meter and the standard value of the high-voltage is greater than the voltage error threshold value;
(2) the absolute value of the difference between the voltage value of the secondary voltage loop of the low-voltage gauge and the low-voltage standard value is larger than the voltage error threshold value;
5-3) temperature judgment:
(1) acquiring the real-time current value of the temperature test point in the step 3), and substituting the real-time current value into a temperature-current comparison curve to obtain a normal temperature value corresponding to the real-time current value;
(2) and acquiring a real-time temperature value of the temperature test point, and if the absolute value of the difference between the real-time temperature value and the normal temperature value is greater than a temperature error threshold value, judging that the temperature is abnormal and giving an alarm.
2. The method of claim 1, wherein: and if the absolute value of the difference of the product of the current value of the high-voltage meter and the variable ratio of the high-voltage current transformer minus the current value of the high-voltage side is greater than the current error threshold, the secondary current loop of the high-voltage meter is abnormal.
3. The method of claim 1, wherein: and if the absolute value of the difference between the product of the current value of the secondary current loop of the high-voltage meter and the variable ratio of the high-voltage current transformer and the high-voltage side current value is greater than the current error threshold value, the high-voltage current transformer in the secondary current loop of the high-voltage meter is abnormal.
4. The method of claim 1, wherein: and if the absolute value of the difference between the quotient obtained by dividing the product of the current value of the low-voltage meter and the variable ratio of the low-voltage current transformer by the variable ratio of the transformer and the high-voltage side current value is greater than the current error threshold value, the secondary current loop of the low-voltage meter is abnormal.
5. The method of claim 1, wherein: and if the difference obtained by subtracting the high-voltage side current value from the quotient obtained by dividing the low-voltage bus load current value by the transformer variable ratio is smaller than the current error threshold value, the output end of the bus control circuit breaker of the user-side transformer has shunt.
6. The method of claim 1, wherein: and if the absolute value of the difference between the quotient obtained by dividing the product of the current value of the secondary current loop of the low-voltage meter and the variable ratio of the low-voltage current transformer by the variable ratio of the transformer and the current value at the high-voltage side is greater than the current error threshold, the low-voltage current transformer in the secondary current loop of the low-voltage meter is abnormal.
7. The method of claim 1, wherein: when the absolute value of the difference between the current value of the secondary current loop of the high-voltage meter and the current value of the high-voltage meter is greater than the current error threshold value, the wiring terminal of the high-voltage meter or the wiring terminal of the junction box is abnormal;
or when the absolute value of the difference between the current value of the secondary current loop of the low-voltage meter and the current value of the low-voltage meter is larger than the current error threshold value, the wiring terminal of the low-voltage meter or the wiring terminal of the junction box is abnormal.
8. The method of claim 1, wherein: and if the absolute value of the difference between the voltage value of the secondary voltage loop of the high-voltage meter and the standard value of the high-voltage is greater than the voltage error threshold value, the secondary voltage loop of the high-voltage meter or a high-voltage transformer in the secondary voltage loop is abnormal.
9. The method of claim 1, wherein: if the absolute value of the difference between the voltage value of the secondary voltage loop of the low-voltage meter and the standard value of the low-voltage is larger than the voltage error threshold value, the secondary voltage loop of the low-voltage meter is abnormal.
10. The method of claim 1, wherein: the high-voltage standard value is 100V, and the low-voltage standard value is 220V.
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