CN110736865B - Three-phase user electricity stealing judgment and positioning method - Google Patents
Three-phase user electricity stealing judgment and positioning method Download PDFInfo
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- CN110736865B CN110736865B CN201911236192.5A CN201911236192A CN110736865B CN 110736865 B CN110736865 B CN 110736865B CN 201911236192 A CN201911236192 A CN 201911236192A CN 110736865 B CN110736865 B CN 110736865B
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Abstract
The invention provides a three-phase user electricity stealing judgment and positioning method which mainly comprises the steps of acquiring signals, analyzing layer by layer according to information acquired by signal acquisition equipment at all levels, judging whether each electric energy meter works normally or not by detecting CT, further judging users with abnormal electricity consumption if each electric energy meter works normally, then sending abnormal information to electricity consumption inspectors, further judging specific abnormal conditions, and making final judgment. The invention provides a three-phase user electricity stealing judgment and positioning method which can preliminarily find and position users with abnormal electricity utilization and prevent electricity stealing behavior.
Description
Technical Field
The invention belongs to the technical field of power utilization detection, and particularly relates to a three-phase user electricity stealing judgment and positioning method.
Background
Along with the development of various large and medium-sized industrial enterprises in China, the power consumption is also increased rapidly and is driven by benefits, electricity stealing behaviors of large-power customers are more and more serious, and electricity stealing technologies and electricity stealing modes are more and more diversified. The electricity stealing behavior threatens the economic benefits of power enterprises, greatly influences the stable development of the power industry in China and brings great potential safety hazards to the production and life of people. In the face of diversified electricity stealing modes and higher electricity stealing technologies, the power industry has to adopt more advanced electricity stealing prevention scientific and technical measures. At present, the state network company requires that the meters are completely replaced by novel intelligent meters, and although the novel intelligent meters have great help on electricity larceny prevention, the electric power enterprises need scientific and effective advanced monitoring technology to achieve the purpose of electricity larceny prevention.
The invention provides a three-phase user electricity stealing judgment and positioning method, which analyzes layer by layer according to information acquired by signal acquisition equipment at each level, eliminates misjudgment caused by sensor faults by matching with detection CT, can timely find and accurately judge specific abnormal users when abnormal electricity utilization occurs, timely find and further prevent electricity stealing behaviors, improve the accuracy of solving a case and shorten the time for solving the case.
Disclosure of Invention
The invention provides a three-phase user electricity stealing judgment and positioning method which can preliminarily find and position users with abnormal electricity utilization and prevent electricity stealing behavior.
The invention specifically relates to a three-phase user electricity stealing judging and positioning method, which comprises the following steps:
step 1: acquiring an active power signal of a special transformer acquisition terminal and an active power signal of an electric energy concentrator;
step 2: calculating the sum of active power signals of the electric energy concentrator;
and step 3: calculating the difference value between the sum of the active power signals of the electric energy concentrator and the active power of the special transformer acquisition terminal;
and 4, step 4: judging whether the difference value between the sum of the active power signals of the electric energy concentrator and the active power of the special transformer acquisition terminal is greater than a power difference value reference value or not, if so, entering the step 5; if not, returning to the step 1;
and 5: collecting a first detection CT signal of the electric energy concentrator;
step 6: calculating a current difference value between the current signal acquired by the electric energy concentrator and the first detection CT signal of the electric energy concentrator;
and 7: judging whether the current difference value is larger than a current difference value reference value, if so, metering CT faults by the electric energy concentrator, and entering a step 8; if not, go to step 12;
and 8: calculating the active power of the electric energy concentrator according to the first detection CT signal of the electric energy concentrator;
and step 9: recalculating the total active power of the electric energy concentrator according to the active power of the electric energy concentrator calculated in the step 8;
step 10: calculating the difference value between the total active power of the electric energy concentrator obtained in the step 9 and the active power collected by the special transformer collecting terminal;
step 11: judging whether the power difference value is larger than a power difference value reference value, if so, entering a step 12; if not, returning to the step 1;
step 12: collecting a second detection CT signal of the electric energy concentrator;
step 13: calculating a difference value between the first detection CT signal of the electric energy concentrator and the second detection CT signal of the electric energy concentrator;
step 14: finding the electric energy concentrator corresponding to the difference value between the first detection CT signal of the electric energy concentrator and the second detection CT signal of the electric energy concentrator, which is greater than the CT difference value reference value, namely the three-phase line with abnormal electricity utilization;
step 15: collecting a current signal and a third detection CT signal of the three-phase multifunctional electric energy meter;
step 16: calculating the difference value between the current signal of the three-phase multifunctional electric energy meter and the third detection CT signal;
and step 17: and finding the three-phase multifunctional electric energy meter corresponding to the difference value between the current signal of the three-phase multifunctional electric energy meter and the third detection CT signal greater than the reference value of the user current difference value, namely the three-phase multifunctional electric energy meter is the electricity user with abnormal electricity utilization.
The special transformer acquisition terminal is installed on the high-voltage side of the 10kV line and comprises a voltage transformer, a current transformer and an electric energy meter which are matched with each other.
The electric energy concentrator is connected with the three-phase multifunctional electric energy meters through RS485 and collects three-phase voltage, current, active power, reactive power, forward active maximum demand, forward electric energy metering information and reverse electric energy metering information.
Further, the electricity inspection personnel is informed to check and confirm on site, and final judgment is made.
Wherein, the first CT that detects of electric energy concentrator is installed electric energy concentrator outgoing line side, the electric energy concentrator second detects CT and installs electric energy concentrator incoming line side, the third of three-phase multifunctional electric energy meter detects CT and installs three-phase multifunctional electric energy meter incoming line side.
Compared with the prior art, the beneficial effects are: the electricity stealing judgment and positioning method analyzes layer by layer according to information acquired by signal acquisition equipment at all levels, eliminates misjudgment caused by sensor faults by matching with detection CT, and more accurately determines users with abnormal electricity utilization.
Detailed Description
The following describes a specific embodiment of the method for determining and positioning electricity stealing of three-phase users in detail.
The three-phase user electricity stealing judgment and positioning method is mainly used for judging whether an electricity stealing behavior exists in a three-phase electricity user, monitoring whether the electricity using behavior of people is legal or not and maintaining the electricity using order.
The invention relates to a three-phase user electricity stealing judgment and positioning method, which mainly comprises the following steps of signal acquisition and analysis: step 1: acquiring an active power signal of a special transformer acquisition terminal and an active power signal of an electric energy concentrator; step 2: calculating the sum of active power signals of the electric energy concentrator; and step 3: calculating the difference value between the sum of the active power signals of the electric energy concentrator and the active power of the special transformer acquisition terminal; and 4, step 4: judging whether the difference value between the sum of the active power signals of the electric energy concentrator and the active power of the special transformer acquisition terminal is greater than a power difference value reference value or not, if so, entering the step 5; if not, returning to the step 1; and 5: collecting a first detection CT signal of the electric energy concentrator; step 6: calculating a current difference value between a current signal acquired by the electric energy concentrator and a first detection CT signal of the electric energy concentrator; and 7: judging whether the current difference value is larger than the current difference value reference value, if so, metering CT faults by the electric energy concentrator, and entering a step 8; if not, go to step 12; and 8: calculating the active power of the electric energy concentrator according to the first detection CT signal of the electric energy concentrator; and step 9: recalculating the total active power of the electric energy concentrator according to the active power of the electric energy concentrator calculated in the step 8; step 10: calculating the difference value between the total active power of the electric energy concentrator obtained in the step 9 and the active power collected by the special transformer collecting terminal; step 11: judging whether the power difference value is larger than the power difference value reference value, if so, entering step 12; if not, returning to the step 1; step 12: collecting a second detection CT signal of the electric energy concentrator; step 13: calculating a difference value of a first detection CT signal of the electric energy concentrator and a second detection CT signal of the electric energy concentrator; step 14: finding out an electric energy concentrator corresponding to the difference value between the first detection CT signal of the electric energy concentrator and the second detection CT signal of the electric energy concentrator, which is greater than the CT difference value reference value, namely the electric energy concentrator is a three-phase line with abnormal electricity utilization; step 15: collecting a current signal and a third detection CT signal of the three-phase multifunctional electric energy meter; step 16: calculating the difference value between the current signal of the three-phase multifunctional electric energy meter and the third detection CT signal; and step 17: and finding the three-phase multifunctional electric energy meter corresponding to the difference value between the current signal of the three-phase multifunctional electric energy meter and the third detection CT signal which is greater than the reference value of the current difference value of the user, namely the three-phase multifunctional electric energy meter is the electricity user with abnormal electricity utilization.
The special transformer acquisition terminal is arranged on the high-voltage side of the 10kV line and comprises a voltage transformer, a current transformer and an electric energy meter which are matched;
the electric energy concentrator is connected with a plurality of three-phase multifunctional electric energy meters through RS485 and collects three-phase voltage, current, active power, reactive power, forward active maximum demand, forward electric energy metering information and reverse electric energy metering information; the three-phase multifunctional electric energy meter adopts an intelligent electric energy meter.
The first CT that detects of electric energy concentrator is installed in electric energy concentrator outgoing line side, and the electric energy concentrator second detects the CT and installs in electric energy concentrator incoming line side, and three-phase multifunctional electric energy meter's third detects the CT and installs in three-phase multifunctional electric energy meter incoming line side.
The information collected by the special transformer collecting terminal, the electric energy concentrator and the three-phase multifunctional electric energy meter is transmitted to the control processing equipment through the optical fiber, and then the analysis and judgment are carried out by adopting the method.
And determining a second power difference value reference value, a CT difference value reference value and a user current difference value reference value according to the line loss of different lines.
The power utilization users with abnormal power utilization are preliminarily judged by adopting the judging and positioning method, power utilization inspectors are informed to carry out on-site inspection and confirmation, final judgment is made, and power utilization validity of the power utilization users is guaranteed.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A three-phase user electricity stealing judgment and positioning method is characterized by comprising the following steps:
step 1: acquiring an active power signal of a special transformer acquisition terminal and an active power signal of an electric energy concentrator;
step 2: calculating the sum of active power signals of the electric energy concentrator;
and step 3: calculating the difference value between the sum of the active power signals of the electric energy concentrator and the active power of the special transformer acquisition terminal;
and 4, step 4: judging whether the difference value between the sum of the active power signals of the electric energy concentrator and the active power of the special transformer acquisition terminal is greater than a power difference value reference value or not, if so, entering the step 5; if not, returning to the step 1;
and 5: collecting a first detection CT signal of the electric energy concentrator;
step 6: calculating a current difference value between the current signal acquired by the electric energy concentrator and the first detection CT signal of the electric energy concentrator;
and 7: judging whether the current difference value is larger than a current difference value reference value, if so, metering CT faults by the electric energy concentrator, and entering a step 8; if not, go to step 12;
and 8: calculating the active power of the electric energy concentrator according to the first detection CT signal of the electric energy concentrator;
and step 9: recalculating the total active power of the electric energy concentrator according to the active power of the electric energy concentrator calculated in the step 8;
step 10: calculating the difference value between the total active power of the electric energy concentrator obtained in the step 9 and the active power collected by the special transformer collecting terminal;
step 11: judging whether the power difference value in the step 10 is larger than a power difference value reference value, if so, entering a step 12; if not, returning to the step 1;
step 12: collecting a second detection CT signal of the electric energy concentrator;
step 13: calculating a difference value between the first detection CT signal of the electric energy concentrator and the second detection CT signal of the electric energy concentrator;
step 14: finding the electric energy concentrator corresponding to the difference value between the first detection CT signal of the electric energy concentrator and the second detection CT signal of the electric energy concentrator, which is greater than the CT difference value reference value, namely the three-phase line with abnormal electricity utilization;
step 15: collecting a current signal and a third detection CT signal of the three-phase multifunctional electric energy meter;
step 16: calculating the difference value between the current signal of the three-phase multifunctional electric energy meter and the third detection CT signal;
and step 17: finding out the three-phase multifunctional electric energy meter corresponding to the difference value between the current signal of the three-phase multifunctional electric energy meter and the third detection CT signal which is greater than the reference value of the current difference value of the user, namely the three-phase multifunctional electric energy meter is the electricity user with abnormal electricity utilization;
the first CT that detects of electric energy concentrator is installed electric energy concentrator outgoing line side, the electric energy concentrator second detects CT and installs electric energy concentrator incoming line side, three-phase multifunctional electric energy meter's third detects CT and installs three-phase multifunctional electric energy meter incoming line side.
2. The three-phase user electricity stealing judgment and positioning method according to claim 1, wherein the special transformer acquisition terminal is installed at the high-voltage side of the 10kV line and comprises a voltage transformer, a current transformer and an electric energy meter which are matched;
the electric energy concentrator is connected with a plurality of three-phase multifunctional electric energy meters through RS485 and collects three-phase voltage, current, active power, reactive power, forward active maximum demand, forward electric energy metering information and reverse electric energy metering information.
3. The three-phase user electricity stealing judgment and location method according to claim 1, wherein an electricity inspector is notified to check the abnormal electricity users on site to make a final judgment.
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