CN110320393B - Low-voltage electric energy meter anti-misinstallation meter and method with anti-electricity stealing function - Google Patents
Low-voltage electric energy meter anti-misinstallation meter and method with anti-electricity stealing function Download PDFInfo
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- CN110320393B CN110320393B CN201910559422.5A CN201910559422A CN110320393B CN 110320393 B CN110320393 B CN 110320393B CN 201910559422 A CN201910559422 A CN 201910559422A CN 110320393 B CN110320393 B CN 110320393B
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Abstract
本发明涉及一种具有反窃电功能的低压电能表防误装表位识别仪及方法，属于低压电能表安装使用技术领域。技术方案是：识别仪准确采集负载侧线路运行参数；识别仪接收单元将采集的信号参数传输给识别仪处理单元；识别仪处理单元分析比对电源侧与负载侧参数差异；识别仪处理单元实时将分析信号结果传输给识别仪发射单元；识别仪发射单元发出脉冲信号；脉冲参数通过识别仪天线反馈给电源侧低压单相电能表；通过参数比较判定是否存在误装表位。本发明的有益效果是：通过电源侧与负载侧运行参数的差异，能够及时发现表位错误情况；一定程度上起到了技术反窃电的作用。
The invention relates to a low-voltage electric energy meter anti-misinstallation table position identification device and method with an anti-electricity-stealing function, and belongs to the technical field of low-voltage electric energy meter installation and use. The technical scheme is as follows: the identification device accurately collects the line operation parameters of the load side; the identification device receiving unit transmits the collected signal parameters to the identification device processing unit; the identification device processing unit analyzes and compares the parameter difference between the power supply side and the load side; The analysis signal results are transmitted to the transmitter unit of the identification instrument; the transmitter unit of the identification instrument sends out a pulse signal; the pulse parameters are fed back to the low-voltage single-phase electric energy meter on the power supply side through the antenna of the identification instrument; it is judged whether there is a misinstallation of the meter through parameter comparison. The beneficial effects of the present invention are: through the difference between the operating parameters of the power supply side and the load side, the epitope error can be found in time; to a certain extent, it plays the role of technical anti-theft of electricity.
Description
Technical Field
The invention relates to a meter position recognition instrument and a method for preventing false installation of a low-voltage electric energy meter with an anti-electricity-stealing function, and belongs to the technical field of installation and use of low-voltage electric energy meters.
Background
One of the main services of the power supply enterprise is to record the electricity consumption of the power customers through an electric energy meter metering device, so as to charge the electricity fee according to the state approved electricity price. Therefore, the electric energy meter has obvious function as a weighing beam for both power supply and power consumption. However, in the management work of low-voltage customer electricity consumption in business stations and suburb power supply stations, after a newly-built cell is in formal electricity consumption, the epitope of the electric energy meter is inconsistent with the actual customer electricity consumption address; or the meter is installed in a misplacement way in the old cell reconstruction process; or individual customers intentionally disturb the meter installation position so as to achieve the purpose of illegal electricity stealing. The problems exposed by the above phenomena will generally cause the calculation result of the power consumption between the power supply enterprise and the power customer to be inaccurate, and further affect the normal collection of the electricity fee.
Disclosure of Invention
The invention aims to provide a low-voltage electric energy meter anti-misloading meter position recognition instrument with an anti-electricity-stealing function and a method thereof, which can prevent the dispute of electricity fee settlement caused by the position error of the low-voltage electric energy meter, reduce the occurrence of electricity stealing behavior to a certain extent, reduce the adverse effect caused by the dislocation of the meters to the maximum extent, ensure the legal rights and interests of both power supply and power utilization parties and effectively solve the problems in the background technology.
The technical scheme of the invention is as follows: a low-voltage electric energy meter anti-misloading meter position recognizer with anti-electricity-stealing function comprises a line parameter acquisition input end, a recognizer receiving unit, a recognizer processing unit, a recognizer transmitting unit and a recognizer antenna which are sequentially connected; the line parameter acquisition input end is connected with the service line parameter acquisition coils, the two service line parameter acquisition coils form a group, and the service line parameter acquisition coils in one group are respectively sleeved on the service zero line and the service live line.
A low-voltage electric energy meter anti-misloading gauge position recognition method with anti-electricity-stealing function is characterized in that the recognizer is installed at the tail end of an electricity address of an electric power customer; the identification instrument accurately collects the operating parameters of the load side line; the identification instrument receiving unit transmits the acquired signal parameters to the identification instrument processing unit; the identification instrument processing unit analyzes and compares parameter differences of a power supply side and a load side; the recognition instrument processing unit transmits the analysis signal result to the recognition instrument transmitting unit in real time; the recognizer transmitting unit sends out a pulse signal; feeding the pulse parameters back to a low-voltage single-phase electric energy meter at the power supply side through an antenna of the identification instrument; and judging whether the misloading epitope exists or not through parameter comparison.
The method comprises the following specific steps:
firstly, sleeving a group of service line parameter acquisition coils on a service zero line and a service live line respectively, and connecting the group of service line parameter acquisition coils with a line parameter acquisition input end;
secondly, respectively carrying out internal series connection on the recognizer receiving unit, the recognizer processing unit and the recognizer transmitting unit;
thirdly, externally connecting the recognizer transmitting unit with a recognizer antenna; the recognizer transmitting unit is connected with the recognizer receiving unit, and the recognizer antenna is connected with the recognizer transmitting unit to form the anti-misoperation gauge position recognizer of the low-voltage electric energy meter with the anti-electricity-stealing function;
fourthly, installing and fixing the anti-misoperation meter position identifier of the low-voltage electric energy meter with the anti-electricity-stealing function on the electric power customer house;
fifthly, connecting a low-voltage single-phase electric energy meter in a metering box of the low-voltage electric energy meter with a load terminal and a zero line terminal on the power side of the leakage protection air switch, and connecting the load terminal and the zero line terminal on the load side of the leakage protection air switch with a zero line and a live line of a user respectively;
a power supply is connected to the three-phase four-wire low-voltage line through a zero line in the single-phase low-voltage line and a live wire in the single-phase low-voltage line, a down lead of the power supply is connected to a metering box of the low-voltage electric energy meter, a load outlet wire of the metering box of the electric energy meter is led out through a plurality of low-voltage single-phase electric energy meters, and the power consumption of all customers is recorded respectively;
the line parameters acquired by the service line parameter acquisition coil are compared with the line parameters of the low-voltage single-phase electric energy meter acquired by the identifier antenna, and the line parameters are analyzed and processed by the identifier processing unit to reach a fault triggering threshold value; and finally, feeding back to the low-voltage single-phase electric energy meter through the identification instrument antenna again, wherein a fault indicator lamp of the low-voltage single-phase electric energy meter is normally on, and meanwhile, a monitoring background of the electricity utilization information acquisition system also sends out fault alarm information to prompt a worker to further process.
The invention has the beneficial effects that: through the difference of the operating parameters of the power supply side and the load side, the error condition of the epitope can be found in time; the dispute of electric charge settlement caused by metering errors is reduced, and the complaint amount of customers is reduced; the device plays a role in preventing electricity stealing by technology to a certain extent, and maintains the economic benefits of power supply enterprises; the accident of power failure caused by the arrearage of the electric energy meter with the wrong meter position is avoided, the reliable power supply of normal payment customers is ensured, and the personal and property losses caused by the power failure are avoided.
Drawings
FIG. 1 is a schematic diagram of the metering wiring of the three-phase four-wire low-voltage line to the low-voltage electric energy meter of the present invention;
FIG. 2 is a schematic diagram of the low-voltage single-phase electric energy meter to the customer connection of the present invention;
FIG. 3 is a schematic diagram of an anti-misloading meter position recognizer of the low-voltage electric energy meter with the anti-electricity-stealing function of the invention;
in the figure: the system comprises a three-phase four-wire low-voltage line 1, a zero line 2 in a single-phase low-voltage line, a live wire 3 in the single-phase low-voltage line, a load outgoing line 4 of a metering box of an electric energy meter, a low-voltage single-phase electric energy meter 5, a power side incoming meter live wire 6, a load side outgoing meter live wire 7, a power side incoming meter zero wire 8, a load side outgoing meter zero wire 9, a low-voltage electric energy meter metering box 10, a leakage protection air switch 11, a user zero wire 12, a user live wire 13, a first support 14 of a power address building, a first power client house 15, a second power client house 16, a third power client house 17, an anti-misoperation meter position identification instrument 18 of the low-voltage electric energy meter with an anti-electricity-stealing function, a user wire parameter acquisition coil 19, a line parameter acquisition input end 20, an identification instrument receiving unit 21, an identification instrument processing unit 22, an identification instrument transmitting unit 23 and an identification instrument antenna 24.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and examples.
A low-voltage electric energy meter anti-misloading meter position recognizer with anti-electricity-stealing function comprises a line parameter acquisition input end 20, a recognizer receiving unit 21, a recognizer processing unit 22, a recognizer transmitting unit 23 and a recognizer antenna 24 which are connected in sequence; the line parameter acquisition input end 20 is connected with the service wire parameter acquisition coils 19, the service wire parameter acquisition coils 19 are in a group, and one group of service wire parameter acquisition coils 19 are respectively sleeved on the service zero line 12 and the service live line 13.
A low-voltage electric energy meter anti-misloading gauge position recognition method with anti-electricity-stealing function is characterized in that the recognizer is installed at the tail end of an electricity address of an electric power customer; the identification instrument accurately collects the operating parameters of the load side line; the identification instrument receiving unit transmits the acquired signal parameters to the identification instrument processing unit; the identification instrument processing unit analyzes and compares parameter differences of a power supply side and a load side; the recognition instrument processing unit transmits the analysis signal result to the recognition instrument transmitting unit in real time; the recognizer transmitting unit sends out a pulse signal; feeding the pulse parameters back to a low-voltage single-phase electric energy meter at the power supply side through an antenna of the identification instrument; and judging whether the misloading epitope exists or not through parameter comparison.
The method comprises the following specific steps:
firstly, a group of service wire parameter acquisition coils 19 are respectively sleeved on a service zero line 12 and a service live line 13 and are connected with a line parameter acquisition input end 20;
secondly, respectively carrying out internal serial connection on the recognizer receiving unit 21, the recognizer processing unit 22 and the recognizer transmitting unit 23;
thirdly, the recognizer transmitting unit 23 is externally connected with a recognizer antenna 24; the recognizer transmitting unit 23 is connected with the recognizer receiving unit 21, and the recognizer antenna 24 is connected with the recognizer transmitting unit 23 to form the anti-misoperation meter position recognizer 18 of the low-voltage electric energy meter with the anti-electricity-stealing function;
fourthly, installing and fixing the anti-misoperation meter position identifier 18 of the low-voltage electric energy meter with the anti-electricity-stealing function on the electric power customer house; (for example: mounting and fixing on the third house 17 of the electric power customer)
Fifthly, connecting a low-voltage single-phase electric energy meter 5 in a metering box 10 of the low-voltage electric energy meter with a load terminal and a zero terminal on the power supply side of an electric leakage protection air switch 11, and simultaneously connecting the load terminal and the zero terminal on the load side of the electric leakage protection air switch 11 with a live wire 13 and a zero line 12 of a user respectively;
the power supply is connected to a three-phase four-wire low-voltage line 1 through a zero line 2 in the single-phase low-voltage line and a fire line 3 in the single-phase low-voltage line, a down lead of the power supply is connected to a low-voltage electric energy meter metering box 10, a load outlet wire 4 of the electric energy meter metering box is led out through a plurality of low-voltage single-phase electric energy meters, and the power consumption of all customers is recorded respectively; (e.g., electricity consumption of electric power customers such as A, B, C, D, E, already)
The line parameters acquired by the service line parameter acquisition coil 19 are compared with the line parameters recorded by the low-voltage single-phase electric energy meter 5 acquired by the identifier antenna 24, and the line parameters are analyzed and processed by the identifier processing unit 22 to reach the fault triggering threshold; and finally, feeding back to the low-voltage single-phase electric energy meter 5 through the recognizer antenna 24 again, wherein a fault indicator lamp of the low-voltage single-phase electric energy meter is normally on, and meanwhile, a monitoring background of the electricity consumption information acquisition system also sends out fault alarm information to prompt a worker to further process.
The embodiment is as follows:
FIG. 1: a schematic diagram of the metering wiring from a three-phase four-wire low-voltage line to a low-voltage electric energy meter; the low-voltage electric energy meter is divided into a plurality of lines which are respectively connected with low-voltage single-phase electric energy meters of electric customers A, B, C, D, E, already and the like.
FIG. 2: a schematic diagram of wiring from a low-voltage single-phase electric energy meter of a power customer A to the customer A; the other connections of the power customers B, C, D, E, and the like are the same as the connections of the customer A.
FIG. 3: the low-voltage electric energy meter anti-misloading meter position recognition instrument with the anti-electricity-stealing function has a structural schematic diagram, and a service wire parameter acquisition coil 19 is respectively sleeved on a service zero line 12 and a service live line 13.
Under normal conditions, a power supply side meter-in live wire 6 and a power supply side meter-in zero wire 8 are respectively connected into the 1 st terminal and the 3 rd terminal of the low-voltage single-phase electric energy meter; a load side meter outlet live wire 7 and a load side meter outlet zero wire 9 are respectively led out from the 2 nd and 4 th terminals of the low-voltage single-phase electric energy meter and are connected with a power supply side load terminal and a zero wire terminal of an electric leakage protection air switch 11; here, the wiring connection is completed in the low-voltage electric energy meter metering box 10, and the wiring error probability of meter installation personnel is almost zero due to the fixed wiring layout and short line distance. At this time, the line parameters acquired by the service line parameter acquisition coil 19 are compared with the line parameters recorded by the low-voltage single-phase electric energy meter 5 acquired through the identifier antenna 24, and are analyzed and processed by the identifier processing unit 22, so that the fault triggering threshold value is not reached; finally, the low-voltage single-phase electric energy meter 5 is fed back through the identification instrument antenna 24 again, and the normal indicator lamp of the low-voltage single-phase electric energy meter is normally on. In the embodiment, at this time, the line parameter current value of the power customer third residence 17 acquired by the service line parameter acquisition coil 19 is 10A, the line parameter current value recorded by the low-voltage single-phase electric energy meter 5 to which the power customer third residence belongs is 10A acquired by the identifier antenna 24, and the difference value between the two values is zero after the analysis and processing of the identifier processing unit 22 and does not reach the preset fault trigger threshold value of 0.5A, so that the epitope of the low-voltage single-phase electric energy meter 5 to which the power customer third residence belongs is correct, and the normal indicator lamp is normally on.
However, in the process of connecting the load side load terminal and the zero line terminal of the leakage protection air switch 11 with the service lines of the power customers, such as a, b, c, d, e, and the like, the power customers are easy to cause epitope dislocation and metering error due to long power address distribution distance, wide range and concentrated wire bunching; or metering errors can be caused in the case that electricity stealing molecules disturb the audio-visual; at this time, the line parameters acquired by the service line parameter acquisition coil 19 are compared with the line parameters recorded by the low-voltage single-phase electric energy meter 5 acquired by the identifier antenna 24, and the line parameters are analyzed and processed by the identifier processing unit 22 to reach the fault triggering threshold. And finally, feeding back to the low-voltage single-phase electric energy meter 5 through the recognizer antenna 24 again, wherein a fault indicator lamp of the low-voltage single-phase electric energy meter is normally on, and meanwhile, a monitoring background of the electricity consumption information acquisition system also sends out fault alarm information to prompt a worker to further process.
In the embodiment, the power customers a, b, c, d, e, and he are respectively equipped with a group of service line parameter acquisition coils 19, the acquired line parameter current values are respectively 8A, 6A, 11A, 4A, 14A, and 19A, at this time, the line parameter current values recorded by the low-voltage single-phase electric energy meter 5 belonging to each customer are respectively 8A, 4A, 11A, 6A, 14A, and 19A acquired through the identification instrument antenna 24 installed in advance by each customer a, b, c, d, e, and he, the identification instrument processing unit 22 analyzes and processes the difference values of the two values respectively 0A, +2A, 0A, -2A, 0A, and 0A, wherein the absolute difference values of the customers b and d are greater than the preset fault trigger threshold value 0.5A, and the sum of the absolute difference values of the customers b and d is equal to zero, and the meter misplacement (stretch-wear) phenomenon may exist in the two customers, so that the power customers b, d, and D, the fault indicator lamps of the low-voltage single-phase electric energy meter 5 to which the D belongs respectively flash to remind inspectors to correct the fault indicator lamps. And the other customers A, C, E and already do not reach the preset fault triggering threshold value of 0.5A, and the normal indicator lamps of the low-voltage single-phase electric energy meters 5 belonging to the customers A, C, E and already are always on.
For example, on the premise that the subscriber lines of the power customers a, b, c, d, e, and he are respectively provided with a group of subscriber line parameter acquisition coils 19, the acquired line parameter current values are respectively 8A, 6A, 11A, 4A, 14A, and 19A, at this time, the line parameter current values recorded by the low-voltage single-phase electric energy meter 5 of each customer are respectively 8A, 6A, 11A, 4A, 14A, and 5A acquired through the identifier antennas 24 installed in advance by the customers a, b, c, d, e, and he, the identifier processing unit 22 analyzes and processes the line parameter current values respectively 0A, and +14A, wherein the absolute difference value of the customer is greater than the preset fault trigger threshold value of 0.5A, the fault indicator lamp of the low-voltage single-phase electric energy meter 5 flickers, which indicates that the actual power consumption of the customer is not accurately counted into the electric energy meter of the customer, and the electricity consumption is low, and preliminarily judging that the client has the possibility of electricity stealing behavior, and reminding inspectors to further check for evidence.
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