CN114002469B - Method and device for detecting electricity theft and electricity theft detector - Google Patents
Method and device for detecting electricity theft and electricity theft detector Download PDFInfo
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- CN114002469B CN114002469B CN202111293219.1A CN202111293219A CN114002469B CN 114002469 B CN114002469 B CN 114002469B CN 202111293219 A CN202111293219 A CN 202111293219A CN 114002469 B CN114002469 B CN 114002469B
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Abstract
The application discloses a method and a device for detecting electricity larceny and an electricity larceny detector, which relate to the technical field of power systems and solve the problems that the existing electricity larceny detection needs technical analysis, so that the detection result is ambiguous and the electricity larceny cannot be accurately judged, and the technical scheme is as follows: measuring live wire current and zero line current outside the electric energy meter, and reading the live wire current and the zero line current of the electric energy meter; establishing a abnormal electricity utilization judging model according to the measured current and the current of the reading electric energy meter; and judging the electricity stealing type according to the abnormal electricity consumption judging model. The application can accurately study and judge the electricity stealing type and the fault of the electric energy meter, is convenient for staff to process, and improves the working efficiency and the accuracy of electricity stealing detection.
Description
Technical Field
The application relates to the technical field of power systems, in particular to a method and a device for detecting electricity theft and an electricity theft detector.
Background
For a long time, the problem of electricity larceny is continuously plagued by a power supply department, in order to prevent electricity larceny, a power supply enterprise adopts a reinforced manpower inspection, various management means and technical means such as electricity larceny prevention measures are additionally arranged in an electric energy meter, and although some electricity larceny behaviors are prevented to a certain extent, the electricity larceny forms the most direct money earning effect, so that electricity larceny can be reeled out, and the electricity larceny is tried to be larceny, and great difficulty is brought to electricity larceny prevention work. For the electric energy meter, the electric energy meter has wide areas, numerous electricity utilization customers and dense power station power grids, but the electricity stealing behavior is frequent, so that serious economic loss is caused for power supply enterprises, and the development of anti-electricity-stealing activities is beneficial to guaranteeing legal rights and interests of the power supply enterprises and safe operation of the power grids.
At present, common anti-electricity-theft inspection methods include: visual inspection, current inspection, power comparison, instrument inspection, power factor, electrical quantity analysis, comparison billing scheme and acquisition system monitoring; the common anti-electricity-theft inspection device is: phase voltammeter, electric energy meter field calibrator and transformer calibrator. The technical disadvantages of these methods and devices are: technical analysis is needed, the checking result is not clear, and the stolen electric quantity cannot be accurately judged; the method of zero-live wire electricity larceny and zero-power-off electricity larceny cannot be checked and treated, and electricity larceny is carried out by the winding metering device.
Therefore, how to propose a new electricity theft detection method and detection device is a problem that needs to be solved currently.
Disclosure of Invention
The application aims to provide a method and a device for detecting electricity larceny and an electricity larceny detector, which solve the problems that the existing electricity larceny detection needs technical analysis, so that the detection result is ambiguous and the electricity larceny cannot be accurately judged.
The technical aim of the application is realized by the following technical scheme:
in a first aspect, the application provides a method of detecting theft of electricity, comprising,
measuring live wire current and zero line current outside the electric energy meter, and reading the live wire current and the zero line current of the electric energy meter;
establishing a abnormal electricity utilization judging model according to the measured current and the current of the reading electric energy meter;
and judging the electricity stealing type according to the abnormal electricity consumption judging model.
Compared with the prior art, the application establishes the abnormal electricity research and judgment model according to the live wire current and the zero wire current outside the single-phase electric energy meter and the read measurement data in the electric energy meter, acquires the electricity larceny detection research and judgment result according to the abnormal electricity research and judgment model, and combines the electric energy meter cover opening record in the measurement data on the basis of the electricity larceny detection research and judgment result, thereby being capable of accurately researching and judging the electricity larceny type and the electric energy meter fault, facilitating the processing of staff and improving the working efficiency and the accuracy of the electricity larceny detection.
Further, calculating a deviation value according to the current outside the electric energy meter and the current of the electric energy meter, setting a deviation value threshold value, and judging the external electricity metering state of the electric energy meter.
Further, if the deviation value is smaller than or equal to the deviation value threshold, the external electricity metering of the electric energy meter is normal, otherwise, the external electricity metering of the electric energy meter is abnormal.
Further, according to the deviation value of the current, the deviation value of the electric energy meter external fire zero line measurement, the deviation value of the electric energy meter external fire line current and the electric energy meter live line current, the deviation value of the electric energy meter fire zero line measurement and the deviation value of the electric energy meter external zero line current and the electric energy meter zero line current are calculated and obtained.
Further, if the record of uncapping of the electric energy meter is not performed, the measurement deviation value of the fire zero line outside the electric energy meter is qualified, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, the condition that the live wire terminal outside the electric energy meter is in short circuit for stealing electricity is judged, and otherwise, the condition that the live wire current sampling fault is judged.
Further, if the cover-free record of the electric energy meter is adopted, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter is qualified, the measurement deviation value of the live wire zero line outside the electric energy meter is out of tolerance, the live wire current outside the electric energy meter is smaller than the zero line current outside the electric energy meter, and the situation that electricity is stolen by winding the live wire outside the electric energy meter is judged.
Further, if the electric energy meter does not have the cover opening record, the deviation value of the zero line current of the electric energy meter and the outside of the electric energy meter is out of tolerance, and then the zero line current sampling fault is judged.
Further, if the electric energy meter is provided with a cover opening record, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, and the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, the electric energy meter is judged to be stolen.
In a second aspect, the application provides an electricity theft detection device, which comprises a data acquisition module, a model construction module and a judgment module,
the data acquisition module is used for measuring the live wire current and the zero wire current outside the electric energy meter and reading the live wire current and the zero wire current of the electric energy meter;
the model construction module is used for establishing a abnormal electricity utilization judging model according to the measured current and the current of the read electric energy meter;
and the judging module is used for judging the electricity stealing type according to the abnormal electricity consumption judging model.
In a third aspect, the application provides an electricity stealing detector applied to an electric energy meter, which comprises the electricity stealing detection method according to the first aspect or the electricity stealing detection device according to the second aspect, and further comprises an RS485 meter reading line, a live wire measuring current clamp and a zero wire measuring current clamp, wherein the RS485 meter reading line is used for reading the live wire zero wire current of the electric energy meter and the uncapping record of the electric energy meter, and the live wire measuring current clamp and the zero wire measuring current clamp are respectively used for measuring the currents of a live wire and a zero wire outside the electric energy meter.
Compared with the prior art, the application has the following beneficial effects:
according to the application, according to the live wire current and zero line current outside the single-phase electric energy meter, the read measurement data in the electric energy meter are combined, the abnormal electricity research model is established, the electricity larceny detection research result is obtained according to the abnormal electricity research model, the electric energy meter cover opening record in the measurement data is combined on the basis of the electricity larceny detection research result, the electricity larceny type and the electric energy meter fault can be accurately researched and judged, the processing by staff is facilitated, and the electricity larceny detection working efficiency and the accuracy are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a flow chart of a method according to an embodiment of the present application;
fig. 2 is a frame diagram of a detection device according to an embodiment of the present application.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Examples
As shown in fig. 1, the present embodiment provides a method of detecting theft of electricity, comprising,
and S10, measuring the live wire current and the zero wire current outside the electric energy meter, and reading the live wire current and the zero wire current of the electric energy meter.
Specifically, the current measuring clamp can be used for measuring the current of the fire zero line outside the electric energy meter, and the current of the fire zero line inside the electric energy meter can be read through the RS485 meter reading line.
And step S20, establishing a abnormal electricity utilization judging model according to the measured current and the current of the read electric energy meter.
Specifically, the established abnormal electricity consumption judgment model is used for calculating the internal and external currents of the electric energy meter, and the essence of the abnormal electricity consumption judgment model is that the calculated deviation value is used for subsequent judgment through calculating the current deviation value.
And step S30, judging the electricity stealing type according to the abnormal electricity consumption judging model.
Specifically, the electricity stealing type of the electric energy meter is judged based on the current calculation result in the step S20.
In a further embodiment of the method for detecting fraudulent use of electricity according to the present embodiment, the deviation value is calculated according to the current outside the electric energy meter and the current of the electric energy meter, and the deviation value threshold is set to determine the external electricity metering state of the electric energy meter.
Specifically, because measurement errors are not considered, users use electricity normally, the currents of the live wire and the zero line inside and outside the electric energy meter are equal, and the deviation of any two measured values is zero, the essence of constructing the abnormal electricity utilization judgment model is to calculate a current deviation value, and because the actual measurement errors exist, a deviation value threshold value is set to compensate the influence caused by the measurement errors.
In a further embodiment of the method for detecting theft of electricity according to this embodiment, if the deviation value is less than or equal to the deviation value threshold, the external electricity metering of the electric energy meter is normal, otherwise the external electricity metering of the electric energy meter is abnormal.
Specifically, according to the actual situation of the user, the deviation value threshold is optionally set to be f=0.5, and values such as 0.6 or 0.4 can be set, if the deviation value K is less than or equal to F, electricity consumption measurement of the user is normal and no electricity stealing behavior exists, if the deviation value K is greater than or equal to F, the electricity consumption measurement of the user is abnormal, at this time, only the fact that the electricity consumption of the user is abnormal is clear, and whether the electricity stealing behavior exists is unclear, because the situation that the electric energy meter fails possibly exists.
In a further embodiment of the electricity theft detection method, the electric energy meter external fire zero line measurement deviation value, the electric energy meter external and live line current deviation value, the electric energy meter external and electric energy meter zero line measurement deviation value and the electric energy meter external and electric energy meter zero line current deviation value are calculated according to the current deviation value.
Specifically, the deviation value is calculated asWherein the live wire current I of the user is measured L measurement Zero line current I of user N measurement The method comprises the steps of carrying out a first treatment on the surface of the Simultaneously reading parameters of the electric energy meter: live wire current I L meter Zero line current I N table 。
According to I L measurement 、I N measurement Calculating the measurement deviation of an external fire zero line of the electric energy meter; i L measurement 、I L meter Calculating the current deviation of the live wire outside the electric energy meter and inside the electric energy meter; i L meter 、I N table Calculating the deviation of an internal fire zero line meter of the electric energy meter; i N measurement 、I N table And calculating zero line current deviation between the outside of the electric energy meter and the inside of the electric energy meter. Setting the former as I 1 The latter is I 2 The current deviation value K is calculated.
In a further embodiment of the electricity theft detection method, if the electric energy meter is not recorded by a cover, the measurement deviation value of the live wire and the zero line outside the electric energy meter is qualified, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, the short circuit electricity theft of the live wire terminal outside the electric energy meter is judged, and otherwise, the sampling fault of the live wire current is judged.
Specifically, because the conditions of electricity larceny outside the meter and electricity larceny inside the meter exist, the detection result can be more accurate by adding the cover opening record on the basis of the deviation value. The electric energy meter uncapping record can read operation data inside the electric energy meter through RS485, wherein the operation data comprise electric energy meter basic data such as live wire current, zero line current, uncapping times, latest uncapping time and the like, and the uncapping record can be obtained according to the uncapping times and the uncapping time.
Here, since the absolute value is obtained from the calculated value of the current deviation value, whether the deviation value exceeds the preset deviation value can be calculated, but the magnitude of the live wire current inside and outside the meter is unclear, by comparing the live wire current inside and outside the meter, not only the position where the electricity theft occurs can be specifically judged, but also whether the current sampling of the electric energy meter has a fault can be judged.
In a further embodiment of the electricity theft detection method, if the cover is not opened, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter is qualified, the deviation value of the live wire zero line measurement outside the electric energy meter is out of tolerance, the live wire current outside the electric energy meter is smaller than the zero line current outside the electric energy meter, and then electricity theft is judged to be caused when the live wire outside the electric energy meter is wound.
Specifically, whether electricity is stolen from a live wire outside the electric energy meter is mainly judged, if the deviation value between the live wire outside the electric energy meter and the live wire current of the electric energy meter is qualified, whether the live wire current is smaller than the zero wire current is judged according to measured current data outside the electric energy meter, and if the live wire current is smaller than the condition that electricity is stolen from the live wire by winding the live wire of the electric energy meter can be obtained.
In a further embodiment of the method for detecting fraudulent use of electricity according to this embodiment, if the electric energy meter does not have a cover to record, the deviation value of the zero line current between the outside of the electric energy meter and the electric energy meter is out of tolerance, and then it is determined that the zero line current sampling is faulty.
Specifically, under the condition that the electric energy meter is not provided with a switch, the zero line currents inside and outside the electric energy meter are the same, and the condition that the current deviation value is out of tolerance does not occur, because no effect is caused when the zero line is stolen, only one reason is that the zero line current sampling fails.
In a further embodiment of the electricity theft detection method, if the electric energy meter has an uncovering record, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, and the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, the electricity theft of the live wire current loop inside the electric energy meter is judged.
Specifically, when the electric energy meter has the record of being opened the lid to the live wire electric current in the table is out of tolerance, and the live wire electric current in the table is greater than the live wire electric current in the table, and the electric current in the table is used by unnecessary consumer to the explanation, then can obtain the condition that the live wire return circuit in the table takes place to steal the electricity.
According to the technical scheme implemented by the method, according to the live wire current and the zero wire current outside the single-phase electric energy meter, the abnormal electricity consumption research model is built according to the read measurement data and fault record data in the electric energy meter, the electricity stealing type and the electric energy meter faults can be accurately researched and judged, the electric energy meter faults and wiring errors are caused, the processing by workers is facilitated, and the working efficiency is improved.
As shown in fig. 2, the present embodiment further provides an apparatus for detecting electricity theft, which includes a data acquisition module 210, a model construction module 220 and a judgment module 230,
the data acquisition module 210 is configured to measure a live wire current and a neutral wire current outside the electric energy meter, and read the live wire current and the neutral wire current of the electric energy meter;
the model construction module 220 is configured to establish a abnormal electricity consumption judgment model according to the measured current and the current of the read electric energy meter;
the judging module 230 is configured to judge the electricity larceny type according to the abnormal electricity consumption judging model.
In a further embodiment of the electricity theft detection device of the present embodiment, the model building module 220 includes a deviation calculation module, calculates a deviation value according to the current outside the electric energy meter and the current of the electric energy meter, and sets a deviation value threshold to determine an electricity metering state outside the electric energy meter.
In a further embodiment of the electricity theft detection device of this embodiment, the model building module 220 further includes a comparison module, if the deviation value is less than or equal to the deviation value threshold, the electricity metering outside the electric energy meter is normal, otherwise, the electricity metering outside the electric energy meter is abnormal.
In a further embodiment of the electricity theft detection device, the deviation calculation module is further configured to calculate and obtain an external fire zero line measurement deviation value of the electric energy meter, a live line current deviation value of the electric energy meter and the electric energy meter, and a zero line current deviation value of the electric energy meter and the electric energy meter according to the deviation value of the current.
In a further embodiment of the electricity theft detection device of the present embodiment, the judging module 230 includes a first judging module, if the record of the electric energy meter without the cover is acceptable for the measurement deviation value of the live wire current of the electric energy meter, the live wire current of the electric energy meter is greater than the live wire current of the electric energy meter, the short circuit electricity theft of the live wire terminal of the electric energy meter is judged, otherwise, the sampling fault of the live wire current is judged.
In a further embodiment of the electricity theft detection device of the present embodiment, the judging module 230 includes a second judging module, if the record of the electric energy meter without the cover is acceptable for the deviation value of the live wire current of the electric energy meter, the live wire current of the electric energy meter is smaller than the zero wire current of the electric energy meter, and it is determined that the live wire of the electric energy meter is stolen by winding the live wire of the electric energy meter.
In a further embodiment of the electricity theft detection device of the present embodiment, the judging module 230 includes a third judging module, and if the electric energy meter has no cover record, the deviation value of the zero line current of the electric energy meter and the outside of the electric energy meter is out of tolerance, then the fault is judged as the sampling fault of the zero line current.
In a further embodiment of the electricity theft detection device of the present embodiment, the judging module 230 includes a fourth judging module, and if the electric energy meter has an open cover record, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, and the live wire current outside the electric energy meter is greater than the live wire current of the electric energy meter, then it is determined that electricity is stolen from the live wire current loop inside the electric energy meter.
Various embodiments of a power theft detection device have been described in detail in one of the above-described methods of detecting power theft and will not be described.
In summary, according to the electricity larceny detection device provided by the embodiment, according to the live wire current and the zero wire current outside the single-phase electric energy meter, the abnormal electricity consumption research model is established by combining the read measurement data and fault record data in the electric energy meter, the electricity larceny type and the electric energy meter fault can be accurately researched and judged, the electric energy meter fault and the wiring error are convenient for staff to process, and the working efficiency is improved.
The embodiment provides a power stealing detector applied to an electric energy meter, which comprises a power stealing detection method or a power stealing detection device according to the second aspect, and further comprises an RS485 meter reading wire, a live wire measuring current clamp and a zero wire measuring current clamp, wherein the RS485 meter reading wire is used for reading the fire zero wire current of the electric energy meter and the uncapping record of the electric energy meter, and the live wire measuring current clamp and the zero wire measuring current clamp are respectively used for measuring the current of a live wire and a zero wire outside the electric energy meter.
Specifically, steal electric detector includes peripheral hardware RS485 meter reading line interface and two electric current measuring clamp interfaces, realizes the import of data, still includes treater and memory inside the detector, realizes handling and storage to data.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (3)
1. A method for detecting fraudulent use of electricity is characterized by comprising the steps of,
measuring live wire current and zero line current outside the electric energy meter, and reading the live wire current and the zero line current of the electric energy meter;
calculating a deviation value according to the current outside the electric energy meter and the current of the electric energy meter, setting a deviation value threshold value, and judging the external electricity metering state of the electric energy meter; if the deviation value is smaller than or equal to the deviation value threshold value, the external electricity metering of the electric energy meter is normal, otherwise, the external electricity metering of the electric energy meter is abnormal; calculating and obtaining an external fire zero line measurement deviation value of the electric energy meter, a live wire current deviation value of the electric energy meter and the electric energy meter, and a zero line current deviation value of the electric energy meter and the electric energy meter according to the deviation value of the current; wherein the current deviation value is calculated as，/>Indicating the live current +.>Representing the zero line current;
if the uncapping record of the electric energy meter is not adopted, the measurement deviation value of the fire zero line outside the electric energy meter is qualified, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, the short circuit electricity larceny of the live wire terminal outside the electric energy meter is judged, and otherwise, the sampling fault of the live wire current is judged; if the cover-free record of the electric energy meter is adopted, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter is qualified, the measurement deviation value of the live wire zero line outside the electric energy meter is out of tolerance, the live wire current outside the electric energy meter is smaller than the zero line current outside the electric energy meter, and the situation that the live wire outside the electric energy meter is wound around the live wire to steal electricity is judged; if the electric energy meter does not have the cover opening record, the deviation value of the zero line current of the electric energy meter and the outside of the electric energy meter is out of tolerance, and the zero line current sampling fault is judged; if the electric energy meter is provided with a cover opening record, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, and the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, the electric energy meter is judged to be stolen.
2. A device for detecting electricity theft is characterized by comprising a data acquisition module, a model construction module and a judgment module,
the data acquisition module is used for measuring the live wire current and the zero wire current outside the electric energy meter and reading the live wire current and the zero wire current of the electric energy meter;
the model construction module is used for calculating deviation values according to the currents outside the electric energy meter and the electric energy meter, setting a deviation value threshold value and judging the external electric metering state of the electric energy meter; if the deviation value is smaller than or equal to the deviation value threshold value, the external electricity metering of the electric energy meter is normal, otherwise, the external electricity metering of the electric energy meter is abnormal; calculating and obtaining an external fire zero line measurement deviation value of the electric energy meter, a live wire current deviation value of the electric energy meter and the electric energy meter, and a zero line current deviation value of the electric energy meter and the electric energy meter according to the deviation value of the current; wherein the current deviation value is calculated as，/>Indicating the live current +.>Representing the zero line current;
the judging module is used for judging that the live wire current outside the electric energy meter is short-circuited and stolen if the uncapped record of the electric energy meter is not recorded, the measurement deviation value of the live wire zero line outside the electric energy meter is qualified, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter is out of tolerance, and the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, otherwise, the live wire current sampling fault is judged; if the cover-free record of the electric energy meter is adopted, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter is qualified, the measurement deviation value of the live wire zero line outside the electric energy meter is out of tolerance, the live wire current outside the electric energy meter is smaller than the zero line current outside the electric energy meter, and the situation that the live wire outside the electric energy meter is wound around the live wire to steal electricity is judged; if the electric energy meter does not have the cover opening record, the deviation value of the zero line current of the electric energy meter and the outside of the electric energy meter is out of tolerance, and the zero line current sampling fault is judged; if the electric energy meter is provided with a cover opening record, the deviation value of the live wire current outside the electric energy meter and the live wire current outside the electric energy meter are out of tolerance, and the live wire current outside the electric energy meter is larger than the live wire current of the electric energy meter, the electric energy meter is judged to be stolen.
3. The utility model provides a be applied to electric energy meter steal electric detector, its characterized in that includes the electric detector of stealing of claim 2, still includes RS485 meter reading line, live wire measurement current pincers and zero line measurement current pincers, RS485 meter reading line is used for reading the record of uncapping of electric energy meter's fire zero line electric current and electric energy meter, live wire measurement current pincers and zero line measurement current pincers are used for measuring the electric current of live wire and zero line outside the electric energy meter respectively.
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