CN110763885B - Single-phase user steals electric monitored control system - Google Patents
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- CN110763885B CN110763885B CN201911237139.7A CN201911237139A CN110763885B CN 110763885 B CN110763885 B CN 110763885B CN 201911237139 A CN201911237139 A CN 201911237139A CN 110763885 B CN110763885 B CN 110763885B
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Abstract
The invention provides a single-phase user electricity stealing monitoring system, which comprises an electric energy acquisition unit, a communication unit, a control processing unit, an alarm unit and a signal sending unit, wherein the electric energy acquisition unit is used for acquiring electric energy; the electricity stealing monitoring system continuously monitors the electricity consumption and the metering state of the user through the electric energy collecting unit, realizes the real-time monitoring of the electricity consumption condition of the user, judges whether the electricity consumption of the user is abnormal according to the current and power conditions, and timely informs electricity utilization inspectors to carry out assault inspection, so that electricity stealing behaviors can be timely found and prevented, the accuracy of case solving is improved, and the case solving time is shortened. The invention provides a single-phase user electricity stealing monitoring system which can preliminarily find and locate users with abnormal electricity utilization and prevent electricity stealing behaviors.
Description
Technical Field
The invention belongs to the technical field of electricity utilization monitoring, and particularly relates to a single-phase user electricity stealing monitoring system.
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 single-phase user electricity stealing monitoring system, which judges an abnormal circuit according to collected active power, determines whether a sensor is abnormal or the electricity consumption of a user is abnormal according to detection CT, prevents misjudgment caused by the fault of the sensor, can timely find and accurately judge a specific abnormal user when the electricity consumption is abnormal, 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 single-phase user electricity stealing monitoring system which can preliminarily find and locate users with abnormal electricity utilization and prevent electricity stealing behaviors.
The invention specifically relates to a single-phase user electricity stealing monitoring system which comprises an electric energy acquisition unit, a communication unit, a control processing unit, an alarm unit and a signal sending unit, wherein the electric energy acquisition unit is sequentially connected with the communication unit, the control processing unit and the alarm unit, and the control processing unit is also connected with the signal sending unit; the electricity stealing monitoring system continuously monitors the electricity consumption and the metering state of the user through the electric energy collecting unit, realizes the real-time monitoring of the electricity consumption condition of the user, judges whether the electricity consumption of the user is abnormal according to the current and power conditions, and timely informs electricity utilization inspectors to carry out assault inspection, so that electricity stealing behaviors can be timely found and prevented, the accuracy of case solving is improved, and the case solving time is shortened.
The electric energy acquisition unit comprises a special transformer acquisition terminal, an electric energy acquisition device and an electric energy concentrator,
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, and finishing data management, storage, parameter setting, inquiry and event recording work;
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 electricity utilization information of power consumers in a centralized manner;
the electric energy concentrator incoming line side and the single-phase electric energy meter incoming line side also comprise detection CTs.
The communication unit comprises a signal transmitting module and a signal receiving module, the signal transmitting module adopts a laser transmitter to convert an electric signal into an optical signal and transmits the optical signal to the signal receiving module through an optical fiber, and the signal receiving module adopts an optical receiver to convert an input optical signal into an electric signal through a photodiode and output the electric signal.
The control processing unit adopts a CPU to analyze and judge the acquired information, and comprises the following steps:
step (1): calculating the sum of active power collected by the electric energy concentrator;
step (2): calculating the difference value of the total active power collected by the electric energy concentrator and the active power collected by the special transformer collecting terminal;
and (3): judging whether the power difference value is larger than a first power difference value reference value or not, if so, entering the step (4); if not, returning to the step (1);
and (4): collecting the CT signal detected by the electric energy concentrator;
and (5): 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 (6): 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 the step (7); if not, entering the step (11);
and (7): calculating the active power of the electric energy concentrator according to the CT signal detected by the electric energy concentrator;
and (8): replacing the active power of the electric energy concentrator obtained by calculation in the step (7), and recalculating the total active power of the electric energy concentrator;
and (9): calculating the difference value between the total active power of the electric energy concentrator obtained in the step (8) and the active power collected by the special transformer collecting terminal;
step (10): judging whether the power difference value is larger than a first power difference value reference value or not, if so, entering a step (11); if not, returning to the step (1);
step (11): calculating the total active power of each phase of the electric energy collector;
step (12): 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 (13): finding a line with the power difference value larger than a second power difference value reference value;
step (14): collecting a CT (computed tomography) signal detected by the single-phase electric energy meter under the circuit;
step (15): calculating a current difference value between a current signal acquired by the single-phase electric energy meter and a CT signal detected by the single-phase electric energy meter;
step (16): and 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.
The control processing unit also comprises a memory, a display and a key input module.
The alarm unit adopts a sound-light alarm, and when the electricity stealing monitoring system detects abnormal electricity utilization, the sound-light alarm is timely sent out.
And the signal sending unit sends the detection information of the electricity stealing monitoring system to related workers by adopting a CDMA mobile communication technology.
Compared with the prior art, the beneficial effects are: the electricity stealing monitoring system judges an abnormal circuit according to the collected active power, determines whether the sensor is abnormal or the electricity consumption of the user is abnormal according to the detection CT, can timely find and accurately judge specific abnormal users when the electricity consumption is abnormal, timely find and further stop electricity stealing behaviors, improve the accuracy of case solving and shorten the case solving time.
Drawings
Fig. 1 is a schematic structural diagram of a single-phase user electricity stealing monitoring system of the present invention.
Detailed Description
The following describes in detail a specific embodiment of a single-phase user electricity-stealing monitoring system according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the electricity stealing monitoring system of the invention comprises an electric energy acquisition unit, a communication unit, a control processing unit, an alarm unit and a signal sending unit; the electric energy acquisition unit is sequentially connected with the communication unit, the control processing unit and the alarm unit, and the control processing unit is also connected with the signal sending unit; the electricity stealing monitoring system continuously monitors the electricity consumption and the metering state of the user through the electric energy collecting unit, realizes the real-time monitoring of the electricity consumption condition of the user, judges whether the electricity consumption of the user is abnormal according to the current and power conditions, and timely informs electricity utilization inspectors to carry out assault inspection.
The electric energy acquisition unit comprises a special transformer acquisition terminal, an electric energy collector and an electric energy concentrator, wherein the special transformer acquisition terminal is arranged on the high-voltage side of a 10kV line, is connected to an electric energy meter through a matched voltage transformer and a matched current transformer, and can perform parameter setting, electricity consumption data metering, acquisition processing and remote communication work; 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, and finishing data management, storage, parameter setting, inquiry and event recording work; 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 electricity utilization information of power consumers in a centralized manner;
the electric energy concentrator incoming line side and the single-phase electric energy meter incoming line side also comprise detection CTs.
The communication unit comprises a signal transmitting module and a signal receiving module, the signal transmitting module adopts a laser transmitter to convert an electric signal into an optical signal and transmits the optical signal to the signal receiving module through an optical fiber, and the signal receiving module adopts an optical receiver to convert an input optical signal into an electric signal through a photodiode and output the electric signal.
The control processing unit adopts a CPU to analyze and judge the acquired information: step (1): calculating the sum of active power collected by the electric energy concentrator; step (2): calculating the difference value of the total active power collected by the electric energy concentrator and the active power collected by the special transformer collecting terminal; and (3): judging whether the power difference value is larger than a first power difference value reference value or not, if so, entering the step (4); if not, returning to the step (1); and (4): collecting the CT signal detected by the electric energy concentrator; and (5): 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 (6): 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 the step (7); if not, entering the step (11); and (7): calculating the active power of the electric energy concentrator according to the CT signal detected by the electric energy concentrator; and (8): replacing the active power of the electric energy concentrator obtained by calculation in the step (7), and recalculating the total active power of the electric energy concentrator; and (9): calculating the difference value between the total active power of the electric energy concentrator obtained in the step (8) and the active power collected by the special transformer collecting terminal; step (10): judging whether the power difference value is larger than a first power difference value reference value or not, if so, entering a step (11); if not, returning to the step (1); step (11): calculating the total active power of each phase of the electric energy collector; step (12): 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 (13): finding a line with the power difference value larger than a second power difference value reference value; step (14): collecting a CT (computed tomography) signal detected by the single-phase electric energy meter under the circuit; step (15): calculating a current difference value between a current signal acquired by the single-phase electric energy meter and a CT signal detected by the single-phase electric energy meter; step (16): and 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.
And determining the first power difference value reference value, the second power difference value reference value and the current difference value reference value according to the line loss of the line.
The control processing unit further comprises a memory, a display and a key input module, wherein the key input module is combined with the memory and the display to finish setting the first power difference value reference value, the second power difference value reference value and the current difference value reference value.
The alarm unit adopts an audible and visual alarm, and the signal sending unit adopts a CDMA mobile communication technology to send the detection information of the electricity stealing monitoring system to a phase electricity utilization inspector.
When the control processing unit judges that the electricity utilization of a certain user is abnormal, the alarm unit is controlled to give an alarm, the signal sending unit is controlled to send specific information to electricity utilization inspectors, and whether the user steals electricity is further determined.
The electric energy meters all adopt intelligent electric energy meters.
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 (5)
1. The single-phase user electricity stealing monitoring system is characterized by comprising an electric energy acquisition unit, a communication unit, a control processing unit, an alarm unit and a signal sending unit, wherein the electric energy acquisition unit is sequentially connected with the communication unit, the control processing unit and the alarm unit; the electricity stealing monitoring system continuously monitors the electricity consumption and the metering state of the user through the electric energy acquisition unit, realizes the real-time monitoring of the electricity consumption condition of the user, judges whether the electricity consumption of the user is abnormal according to the current and power conditions, and timely informs an electricity consumption inspector to carry out assault inspection, so that electricity stealing behaviors can be timely found and prevented;
the electric energy acquisition unit comprises a special transformer acquisition terminal, an electric energy collector and an electric energy concentrator;
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 RS 485;
the electric energy collector is connected with a plurality of single-phase electric energy meters through RS 485;
the electric energy concentrator inlet side and the three-phase multifunctional electric energy meter inlet side also comprise detection CTs;
the control processing unit adopts a CPU to analyze and judge the acquired information, and comprises the following steps:
step (1): calculating the sum of active power collected by the electric energy concentrator;
step (2): calculating the difference value of the total active power collected by the electric energy concentrator and the active power collected by the special transformer collecting terminal;
and (3): judging whether the power difference value is larger than a first power difference value reference value or not, if so, entering the step (4); if not, returning to the step (1);
and (4): collecting the CT signal detected by the electric energy concentrator;
and (5): 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 (6): 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 the step (7); if not, entering the step (11);
and (7): calculating the active power of the electric energy concentrator according to the CT signal detected by the electric energy concentrator;
and (8): replacing the active power of the electric energy concentrator obtained by calculation in the step (7), and recalculating the total active power of the electric energy concentrator;
and (9): calculating the difference value between the total active power of the electric energy concentrator obtained in the step (8) and the active power collected by the special transformer collecting terminal;
step (10): judging whether the power difference value in the step (9) is larger than a first power difference value reference value, if so, entering a step (11); if not, returning to the step (1);
step (11): calculating the total active power of each phase of the electric energy collector;
step (12): 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 (13): finding the line with the power difference value larger than the second power difference value reference value in the step (12);
step (14): collecting a CT signal detected by the single-phase electric energy meter under the circuit;
step (15): calculating a current difference value between a current signal acquired by the single-phase electric energy meter and a CT signal detected by the single-phase electric energy meter;
step (16): and (5) judging whether the current difference value in the step (15) is larger than a current difference value reference value, if so, judging that the electricity consumption of a user corresponding to the single-phase electric energy meter is abnormal.
2. The system as claimed in claim 1, wherein the communication unit comprises a signal transmitting module and a signal receiving module, the signal transmitting module converts electrical signals into optical signals by using a laser transmitter and transmits the optical signals to the signal receiving module by using an optical receiver, and the signal receiving module converts input optical signals into electrical signals by using a photodiode and outputs the electrical signals.
3. The system as claimed in claim 2, wherein the control processing unit further comprises a memory, a display, and a key input module.
4. The system as claimed in claim 3, wherein the alarm unit is an audible and visual alarm, and the audible and visual alarm is given when the system detects abnormal power consumption.
5. The system as claimed in claim 4, wherein the signal transmitting unit transmits the electricity larceny monitoring system detection information to electricity utilization inspectors using CDMA mobile communication technology.
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| CN112666390B (en) * | 2021-01-20 | 2023-07-11 | 淮北工科检测检验有限公司 | Electric energy detection metering system |
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