CN110763886A - Single-phase user electricity stealing judgment and positioning method - Google Patents
Single-phase user electricity stealing judgment and positioning method Download PDFInfo
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- CN110763886A CN110763886A CN201911237145.2A CN201911237145A CN110763886A CN 110763886 A CN110763886 A CN 110763886A CN 201911237145 A CN201911237145 A CN 201911237145A CN 110763886 A CN110763886 A CN 110763886A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
Abstract
The invention provides a method for judging and positioning electricity stealing of single-phase users, which mainly comprises the steps of collecting signals, carrying out layer-by-layer analysis, 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 controlling an alarm to give an alarm, displaying abnormal information and sending the user information that the specific electricity consumption is abnormal to electricity utilization inspectors. The invention provides a method for judging and positioning electricity stealing of a single-phase user, 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 method for judging and positioning electricity stealing of a single-phase user.
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 method for judging and positioning electricity stealing of a single-phase user, which carries out layer-by-layer judgment according to collected information, avoids misjudgment caused by sensor faults, can timely find and accurately judge specific abnormal users when abnormal electricity utilization occurs, timely find and further stop electricity stealing behaviors, improve the accuracy of case solving and shorten the case solving time.
Disclosure of Invention
The invention provides a method for judging and positioning electricity stealing of a single-phase user, which can preliminarily find and position users with abnormal electricity utilization and prevent electricity stealing behavior.
The invention specifically relates to a method for judging and positioning electricity stealing of a single-phase user, 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 (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): 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 first power difference value reference value or not, and if so, entering the step (5); if not, returning to the step (1);
and (5): collecting the CT signal detected by the electric energy concentrator;
and (6): calculating the current difference value between the current signal acquired by the electric energy concentrator and the CT signal detected by the electric energy concentrator;
and (7): judging whether the current difference value is larger than a current difference value reference value or not, if so, judging that a metering CT fault exists, and entering a step (8); if not, entering the step (12);
and (8): calculating the active power of the electric energy concentrator according to the CT signal detected by the electric energy concentrator;
and (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 first power difference value reference value or not, if so, entering a step (12); if not, returning to the step (1);
step (12): calculating the total active power of each phase of the electric energy collector;
step (13): calculating the difference value of the total active power of each phase of the electric energy collector and the active power collected by the electric energy concentrator;
step (14): finding a line with the power difference value larger than a second power difference value reference value;
step (15): collecting current signals of the single-phase electric energy meter under the line and detection CT signals of the single-phase electric energy meter;
step (16): calculating the current difference value between the current signal of the single-phase electric energy meter and the current signal of the CT detected by the single-phase electric energy meter;
step (17): judging whether the current difference value is larger than a current difference value reference value or not, if so, judging that the electricity consumption of a user corresponding to the single-phase electric energy meter is abnormal;
step (18): controlling an alarm to give an alarm and displaying abnormal information;
step (19): and sending user information that the specific electricity utilization is abnormal to electricity utilization inspectors.
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 is used for collecting three-phase voltage, current, active power, reactive power, forward active maximum demand, forward electric energy metering information and reverse electric energy metering information;
the electric energy collector is connected with a plurality of single-phase electric energy meters through RS485 to collect voltage, current, active power, reactive power, forward electric energy metering information and reverse electric energy metering information, and the electric energy collector can store the electricity utilization information of electric power users in a centralized manner.
Compared with the prior art, the beneficial effects are: the judging and positioning method can eliminate misjudgment caused by sensor faults, more accurately determine users with abnormal power utilization, and finally determine whether the users have power stealing behaviors through on-site inspection by power utilization inspectors.
Detailed Description
The following describes in detail a specific embodiment of the method for determining and locating electricity stealing of a single-phase user according to the present invention.
The method for judging and positioning the electricity stealing of the single-phase user mainly aims to judge whether the electricity stealing behavior of the single-phase user exists, monitor whether the electricity using behavior of people is legal and maintain the electricity using order.
The method for judging and positioning the electricity stealing of the single-phase user 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 (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): 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 larger than a first power difference value reference value or not, if so, entering the step (5); if not, returning to the step (1); and (5): collecting a CT signal detected by an electric energy concentrator; and (6): calculating the current difference value between the current signal acquired by the electric energy concentrator and the CT signal detected by the electric energy concentrator; and (7): judging whether the current difference value is larger than the current difference value reference value, if so, judging that a metering CT fault exists, and entering a step (8); if not, entering the step (12); and (8): calculating the active power of the energy concentrator according to the CT signal detected by the energy concentrator; and (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 first power difference value reference value, if so, entering a step (12); if not, returning to the step (1); step (12): calculating the total active power of each phase of electric energy collector; step (13): calculating the difference value of the total active power of each phase of electric energy collector and the active power collected by the electric energy concentrator; step (14): finding out the line with the power difference value larger than the second power difference value reference value; step (15): collecting current signals of a single-phase electric energy meter under a line and CT (computed tomography) signals detected by the single-phase electric energy meter; step (16): calculating the current difference value between the current signal of the single-phase electric energy meter and the current signal of the CT detected by the single-phase electric energy meter; step (17): judging whether the current difference value is larger than the current difference value reference value or not, if so, judging that the electricity consumption of a user corresponding to the single-phase electric energy meter is abnormal; step (18): controlling an alarm to give an alarm and displaying abnormal information; step (19): and sending user information that the specific electricity utilization is abnormal to electricity utilization inspectors.
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 with each other.
The electric energy concentrator is connected with a plurality of three-phase multifunctional electric energy meters through RS485 communication lines, and can collect three-phase voltage, current, active power, reactive power, forward active maximum demand, forward electric energy metering information and reverse electric energy metering information.
The electric energy collector is connected with a plurality of single-phase electric energy meters through RS485 communication lines, collects voltage, current, active power, reactive power, forward electric energy metering information and reverse electric energy metering information, and the electric energy collector can store electric power user electricity consumption information in a centralized manner.
The incoming line side of the electric energy concentrator and the incoming line side of the single-phase electric energy meter also comprise a detection CT.
The electric energy meters all adopt intelligent electric energy meters.
The information collected by the special transformer collecting terminal, the electric energy concentrator and the electric energy collector is transmitted to the control processing equipment through optical fibers, and then the analysis and judgment are carried out by adopting the method.
And determining a first power difference value reference value, a second power difference value reference value and a current difference value reference value according to the line loss of different lines.
And (19) sending the abnormal electricity utilization condition to the mobile terminal equipment of the electricity utilization inspector by adopting a mobile communication technology.
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 (2)
1. A method for judging and positioning electricity stealing of a single-phase user 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 (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): 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 first power difference value reference value or not, and if so, entering the step (5); if not, returning to the step (1);
and (5): collecting the CT signal detected by the electric energy concentrator;
and (6): calculating the current difference value between the current signal acquired by the electric energy concentrator and the CT signal detected by the electric energy concentrator;
and (7): judging whether the current difference value is larger than a current difference value reference value or not, if so, judging that a metering CT fault exists, and entering a step (8); if not, entering the step (12);
and (8): calculating the active power of the electric energy concentrator according to the CT signal detected by the electric energy concentrator;
and (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 first power difference value reference value or not, if so, entering a step (12); if not, returning to the step (1);
step (12): calculating the total active power of each phase of the electric energy collector;
step (13): calculating the difference value of the total active power of each phase of the electric energy collector and the active power collected by the electric energy concentrator;
step (14): finding a line with the power difference value larger than a second power difference value reference value;
step (15): collecting current signals of the single-phase electric energy meter under the line and detection CT signals of the single-phase electric energy meter;
step (16): calculating the current difference value between the current signal of the single-phase electric energy meter and the current signal of the CT detected by the single-phase electric energy meter;
step (17): judging whether the current difference value is larger than a current difference value reference value or not, if so, judging that the electricity consumption of a user corresponding to the single-phase electric energy meter is abnormal;
step (18): controlling an alarm to give an alarm and displaying abnormal information;
step (19): and sending user information that the specific electricity utilization is abnormal to electricity utilization inspectors.
2. The method for judging and locating the electricity stealing of the single-phase users as claimed in 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 is used for collecting three-phase voltage, current, active power, reactive power, forward active maximum demand, forward electric energy metering information and reverse electric energy metering information;
the electric energy collector is connected with a plurality of single-phase electric energy meters through RS485 to collect voltage, current, active power, reactive power, forward electric energy metering information and reverse electric energy metering information, and the electric energy collector can store the electricity utilization information of electric power users in a centralized manner.
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| CN111443238A (en) * | 2020-04-20 | 2020-07-24 | 北京智盟信通科技有限公司 | Electricity larceny prevention method |
| CN111948448A (en) * | 2020-08-20 | 2020-11-17 | 国网河北省电力有限公司沧州供电分公司 | Anti-electricity-stealing system based on expert knowledge base |
| CN112213687A (en) * | 2020-10-10 | 2021-01-12 | 国网四川省电力公司电力科学研究院 | Gateway electric energy meter data anomaly detection method and system based on pseudo anomaly point identification |
| CN112379161A (en) * | 2020-11-17 | 2021-02-19 | 国家电网有限公司 | Alarm method for judging electricity stealing behavior |
| CN114089250A (en) * | 2021-10-11 | 2022-02-25 | 国电南瑞科技股份有限公司 | Current transformer abnormity identification and processing method |
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| CN112213687A (en) * | 2020-10-10 | 2021-01-12 | 国网四川省电力公司电力科学研究院 | Gateway electric energy meter data anomaly detection method and system based on pseudo anomaly point identification |
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| CN112379161A (en) * | 2020-11-17 | 2021-02-19 | 国家电网有限公司 | Alarm method for judging electricity stealing behavior |
| CN114089250A (en) * | 2021-10-11 | 2022-02-25 | 国电南瑞科技股份有限公司 | Current transformer abnormity identification and processing method |
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