CN114002469A - Electricity stealing detection method and device and electricity stealing detector - Google Patents
Electricity stealing detection method and device and electricity stealing detector Download PDFInfo
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- CN114002469A CN114002469A CN202111293219.1A CN202111293219A CN114002469A CN 114002469 A CN114002469 A CN 114002469A CN 202111293219 A CN202111293219 A CN 202111293219A CN 114002469 A CN114002469 A CN 114002469A
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Abstract
The invention discloses a method and a device for detecting electricity stealing and an electricity stealing detector, relates to the technical field of electric power systems, and solves the problems that the existing electricity stealing detection needs technical analysis, so that the detection result is not clear, and electricity stealing cannot be accurately judged, and the technical scheme main points are 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 an abnormal electricity utilization judgment model according to the measured current and the current read from the electric energy meter; and judging the type of electricity stealing according to the abnormal electricity judgment model. The invention can accurately study and judge the electricity stealing type and the electric energy meter fault, is convenient for the working personnel to process, and improves the work efficiency and the accuracy of electricity stealing detection.
Description
Technical Field
The invention relates to the technical field of electric power systems, in particular to an electricity stealing detection method and device and an electricity stealing detector.
Background
For a long time, the problem of electricity stealing continuously troubles power supply departments, power supply enterprises adopt various management means and technical means such as enhanced manpower check for preventing electricity stealing, electricity stealing prevention measures and the like are additionally arranged in electric energy meter meters, although some electricity stealing behaviors are prevented to a certain extent, the most direct money-making effect formed by electricity stealing causes electricity thieves to strange the most of computer and think of trying to steal electricity, and great difficulty is brought to the work of electricity stealing prevention. For the electric energy meter, the region is wide, the electricity consumption customers are numerous, the power station and the power grid are dense, the electricity stealing behavior is often prohibited, serious economic loss is caused for power supply enterprises, and the development of the electricity stealing prevention activity is favorable for guaranteeing the legal rights and interests of the power supply enterprises and the safe operation of the power grid.
At present, the commonly used electricity stealing prevention inspection methods include: visual inspection method, current inspection method, power comparison method, instrument inspection method, power factor method, electric quantity analysis method, comparison charging scheme and acquisition system monitoring method; a commonly used electricity stealing prevention inspection apparatus is: the phase volt-ampere meter, the electric energy meter field calibrator and the transformer calibrator. These methods and devices present the technical drawbacks of: technical analysis is needed, the inspection result is not clear, and the electricity stealing amount cannot be accurately judged; the electricity stealing of the live line and the live line can not be checked and adjusted, the electricity stealing method can not be cut off, and the electricity stealing can not be carried out by winding the metering device.
Therefore, how to provide a new electricity stealing detection method and detection equipment is a problem that needs to be solved urgently.
Disclosure of Invention
The invention aims to provide a method and a device for detecting electricity stealing and an electricity stealing detector, which solve the problems that the existing electricity stealing detection needs technical analysis, so that the detection result is not clear and the electricity stealing cannot be accurately judged.
The technical purpose of the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a method for detecting electricity theft, 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 an abnormal electricity utilization judgment model according to the measured current and the current read from the electric energy meter;
and judging the type of electricity stealing according to the abnormal electricity judgment model.
Compared with the prior art, the abnormal electricity utilization study and judgment model is established according to the detection of the live wire current and the zero line current outside the single-phase electric energy meter and the read measurement data in the electric energy meter, the electricity stealing detection study and judgment result is obtained according to the abnormal electricity utilization study and judgment model, the electricity stealing type and the electric energy meter fault can be accurately studied and judged by combining the cover opening record of the electric energy meter in the measurement data on the basis of the electricity stealing detection study and judgment result, the processing by working personnel is facilitated, and the working efficiency and the accuracy of electricity stealing detection are improved.
Further, deviation value calculation is carried out according to the current outside the electric energy meter and the current of the electric energy meter, and a deviation value threshold value is set to judge 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 value, the external electricity metering of the electric energy meter is normal, otherwise, the external electricity metering of the electric energy meter is abnormal.
Further, calculating according to the deviation value of the current to obtain a measurement deviation value of an external fire zero line of the electric energy meter, a measurement deviation value of a fire line current between the outside of the electric energy meter and the electric energy meter, a measurement deviation value of an external fire zero line of the electric energy meter and a measurement deviation value of a zero line current between the outside of the electric energy meter and the electric energy meter.
Further, if the electric energy meter is not subjected to cover opening recording, the measurement deviation value of the outer fire zero line of the electric energy meter is qualified, the deviation value of the outer current of the live line of the electric energy meter and the current of the live line of the electric energy meter is out of tolerance, the current of the live line outside the electric energy meter is greater than the current of the live line of the electric energy meter, the short circuit and electricity stealing of the outer live line terminal of the electric energy meter are judged, and otherwise, the sampling fault of the live line current is judged.
Further, if the cover-opening-free record of the electric energy meter indicates that the current deviation value of the live wire outside the electric energy meter and the current deviation value of the live wire outside the electric energy meter is qualified, the measurement deviation value of the live wire and the zero wire outside the electric energy meter is out of tolerance, and the current of the live wire outside the electric energy meter is smaller than the current of the zero wire outside the electric energy meter, the situation that the live wire outside the electric energy meter is overtopped is judged.
Further, if the electric energy meter is not subjected to cover opening recording, and the deviation value of the current of the zero line between the outside of the electric energy meter and the electric energy meter is out of tolerance, the zero line current sampling fault is determined.
Further, if the electric energy meter has the cover opening record, the current deviation value of the live wire outside the electric energy meter and the electric energy meter is out of tolerance, and the current of the live wire outside the electric energy meter is larger than the current of the live wire of the electric energy meter, the situation that the live wire current loop in the electric energy meter steals electricity is judged.
In a second aspect, the invention provides a device for detecting electricity stealing, which comprises a data acquisition module, a model construction module and a judgment module,
the data acquisition module is used for 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;
the model building module is used for building an abnormal electricity utilization judging model according to the measured current and the current read from the electric energy meter;
and the judging module is used for judging the type of electricity stealing according to the abnormal electricity utilization judging model.
In a third aspect, the invention provides an electricity stealing detector applied to an electric energy meter, which comprises the electricity stealing detection method in the first aspect or the electricity stealing detection device in the second aspect, and further comprises an RS485 meter reading line, a live line measuring current clamp and a zero line measuring current clamp, wherein the RS485 meter reading line is used for reading live line and zero line currents of the electric energy meter and cover opening records of the electric energy meter, and the live line measuring current clamp and the zero line measuring current clamp are respectively used for measuring live line and zero line currents outside the electric energy meter.
Compared with the prior art, the invention has the following beneficial effects:
according to the method, the abnormal electricity utilization study and judgment model is established according to the detection of the live wire current and the zero line current outside the single-phase electric energy meter and the combination of the read measured data in the electric energy meter, the electricity stealing detection study and judgment result is obtained according to the abnormal electricity utilization study and judgment model, and the cover opening record of the electric energy meter in the measured data is combined on the basis of the electricity stealing detection study and judgment result, so that the electricity stealing type and the electric energy meter fault can be accurately studied and judged, the processing of working personnel is facilitated, and the work efficiency and the accuracy of the electricity stealing detection are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a flow chart of a method provided by an embodiment of the present invention;
fig. 2 is a block diagram of a detection apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
It will be understood that when an element is referred to as being "secured to" 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 will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Examples
As shown in fig. 1, the present embodiment provides a power theft detecting method, including,
and step S10, 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.
Specifically, the current of the fire and zero line outside the electric energy meter can be measured through the current measuring clamp, and the current of the fire and zero line inside the electric energy meter can be read through the RS485 meter reading line.
And step S20, establishing an abnormal electricity utilization judgment model according to the measured current and the current read from the electric energy meter.
Specifically, the established abnormal electricity utilization judgment model is used for calculating the internal and external currents of the electric energy meter, and the essence is that the calculated deviation value is used for subsequent judgment through calculation of the current deviation value.
And step S30, judging the type of electricity stealing according to the abnormal electricity judgment model.
Specifically, the electricity stealing type of the electric energy meter is judged based on the current calculation result of the step S20.
In a further embodiment of the electricity stealing detection method according to this embodiment, a deviation value is calculated according to the current outside the electric energy meter and the current of the electric energy meter, and a deviation value threshold is set to determine the external electricity metering state of the electric energy meter.
Specifically, because the measurement error is not considered, the user normally uses electricity, 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 the current deviation value, and because the measurement error exists in the actual measurement, the deviation value threshold value is set to make up for the influence caused by the measurement error.
In a further embodiment of the electricity stealing detection method 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 offset threshold value may be optionally set to be F ═ 0.5, or may be set to be a numerical value such as 0.6 or 0.4, if the offset K is not greater than F, it is obtained that the electricity consumption metering of the user is normal, and no electricity stealing behavior exists, if the offset K > F, the electricity consumption metering of the user is abnormal, and it is only clear that the electricity consumption of the user is abnormal at this time, and it is not clear whether the electricity stealing behavior exists, because there may be a situation that the electric energy meter fails.
In a further embodiment of the electricity stealing detection method according to this embodiment, the measurement deviation value of the external fire and zero line of the electric energy meter, and the measurement deviation value of the external fire and zero line of the electric energy meter are obtained according to the calculation of the current deviation value.
Specifically, the deviation value is calculated as
In which the live current I of the user is measuredL testZero line current I of the userN measurement(ii) a And simultaneously reading parameters of the electric energy meter: live line current IL meterZero line current IN meter。
According to IL test、IN measurementCalculating the measurement deviation of the external fire zero line of the electric energy meter; i isL test、IL meterCalculating the current deviation of a live wire outside the electric energy meter and inside the electric energy meter; i isL meter、IN meterCalculating the meter deviation of the internal fire zero line of the electric energy meter; i isN measurement、IN meterAnd calculating the current deviation of the zero line between the outside of the electric energy meter and the inside of the electric energy meter. Setting the former as I1The latter being I2And calculating the current deviation value K.
In a further embodiment of the electricity stealing detection method according to this embodiment, if the electric energy meter has no uncapping record, the measurement deviation value of the external fire zero line of the electric energy meter is qualified, the deviation value of the external fire current of the electric energy meter and the live line current of the electric energy meter is out of tolerance, and the external live line current of the electric energy meter is greater than the live line current of the electric energy meter, it is determined that the external fire terminal of the electric energy meter is in short circuit to steal electricity, otherwise, it is determined that the sampling fault of the live line current is detected.
Specifically, because the conditions of electricity stealing outside the meter and electricity stealing 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 here, accessible RS485 reads the inside operating data of electric energy meter, including electric energy meter basic data such as live wire electric current, zero line electric current, the number of times of uncapping and the time of uncapping recently, and the record of uncapping can be based on the number of times of uncapping and the time of uncapping and draw.
Here, since the absolute value is obtained from the calculated value of the current deviation value, although it is possible to calculate whether the deviation value exceeds the preset deviation value, the magnitude of the live wire current inside and outside the meter is unclear, and by comparing the live wire current inside and outside the meter, not only the position where electricity stealing occurs can be specifically determined, but also whether a fault exists in the current sampling of the electric energy meter can be determined.
In a further embodiment of the electricity stealing detection method according to this embodiment, if the cover-opening record of the electric energy meter is not available, the deviation value of the current of the live wire outside the electric energy meter from the current of the live wire outside the electric energy meter is qualified, the deviation value of the measurement of the current of the live wire and the zero wire outside the electric energy meter is out of tolerance, and the current of the live wire outside the electric energy meter is smaller than the current of the zero wire outside the electric energy meter, it is determined that the live wire outside the electric energy meter is overtopped.
Specifically, whether electricity stealing occurs in a live wire outside the electric energy meter is mainly judged, if the situation that a current deviation value of the live wire outside the electric energy meter is qualified with that of the live wire of the electric energy meter and a measurement deviation value of a live wire and a zero wire outside the electric energy meter is out of tolerance exists, whether the current of the live wire is smaller than that of the zero wire is judged according to measured current data outside the meter, and if the current of the live wire is smaller than that of the live wire, the situation that electricity stealing occurs when the live wire is crossed around the live wire can be obtained.
In a further embodiment of the electricity stealing detection method according to this embodiment, if the electric energy meter has no lid opening record and the deviation value of the current of the zero line between the outside of the electric energy meter and the electric energy meter is out of tolerance, it is determined that the current of the zero line has a sampling fault.
Specifically, under the condition that the electric energy meter has no record of a switch, the currents of the inner and outer zero lines of the electric energy meter are the same, and the condition that the current deviation value is out of tolerance does not exist.
In a further embodiment of the electricity stealing detection method according to this embodiment, if the electric energy meter has an uncapped record, the deviation value of the current of the live wire between the outside of the electric energy meter and the electric energy meter is out of tolerance, and the current of the live wire outside the electric energy meter is greater than the current of the live wire of the electric energy meter, it is determined that the live wire current loop in the electric energy meter steals electricity.
Specifically, when the electric energy meter has the record of being opened the lid to the inside and outside live wire electric current of table is out of tolerance, and the live wire electric current outside the table is greater than the live wire electric current in the table, shows that the electric current in the table is used by unnecessary consumer, can obtain the live wire return circuit in the table and take place the condition of stealing the electricity then.
According to the technical scheme, the abnormal power utilization studying and judging model is established according to the live wire current and the zero line current outside the single-phase electric energy meter, the read measured data and the read fault recording data in the electric energy meter, the electricity stealing type and the electric energy meter fault, the electric energy meter fault and the wiring error can be accurately studied and judged, the processing is convenient for workers, and the working efficiency is improved.
As shown in fig. 2, the embodiment further provides an electricity stealing detecting apparatus, which includes a data obtaining module 210, a model building module 220 and a determining module 230,
the data acquisition module 210 is configured to measure a live line current and a zero line current outside the electric energy meter, and read the live line current and the zero line current of the electric energy meter;
the model building module 220 is used for building an abnormal electricity utilization judgment model according to the measured current and the current for reading the electric energy meter;
and the judging module 230 is used for judging the electricity stealing type according to the abnormal electricity utilization judging model.
In a further embodiment of the electricity stealing detection apparatus of this embodiment, the model building module 220 includes a deviation calculating module, which performs deviation value calculation 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 the external electricity metering state of the electric energy meter.
In a further embodiment of the electricity stealing detection apparatus of this embodiment, the model building module 220 further includes a comparing module, if the deviation value is smaller than or equal to the deviation value threshold, the external electricity consumption of the electric energy meter is normally measured, otherwise, the external electricity consumption of the electric energy meter is abnormal.
In a further embodiment of the electricity stealing detection device of this embodiment, the deviation calculation module is further configured to calculate and obtain a measurement deviation value of an external fire and zero line of the electric energy meter, a measurement deviation value of a fire line and a current of the external fire and the electric energy meter, a measurement deviation value of the fire and zero line of the electric energy meter, and a measurement deviation value of a zero line and a current of the external zero line of the electric energy meter according to the deviation value of the current.
In a further embodiment of the electricity stealing detection device of this embodiment, the determining module 230 includes a first determining module, and if the electric energy meter has no lid-opening record, the measurement deviation value of the outer fire and zero lines of the electric energy meter is qualified, the measurement deviation value of the outer fire and zero lines of the electric energy meter is out of tolerance, the current deviation value of the outer fire line and the current of the electric energy meter is out of tolerance, and the current of the outer fire line of the electric energy meter is greater than the current of the fire line of the electric energy meter, then it is determined that the short circuit of the outer fire line terminal of the electric energy meter steals electricity, otherwise it is determined that the sampling fault of the fire line current.
In a further embodiment of the electricity stealing detection device of this embodiment, the determining module 230 includes a second determining module, and if the electric energy meter has no lid-opening record, the deviation value of the current of the live wire of the electric energy meter from the outside is qualified, the deviation value of the measurement of the current of the live wire and the zero wire of the electric energy meter from the outside is out of tolerance, and the current of the live wire and the zero wire of the electric energy meter from the outside is smaller than the current of the zero wire and the zero wire from the outside, it is determined that the live wire and the zero wire of the electric energy meter from the outside steal electricity.
In a further embodiment of the electricity stealing detection device of this embodiment, the determining module 230 includes a third determining module, and if the electric energy meter has no lid opening record and the deviation value of the current of the zero line outside the electric energy meter and the current of the zero line of the electric energy meter is out of tolerance, it is determined that the current of the zero line has a sampling fault.
In a further embodiment of the electricity stealing detection device of this embodiment, the determining module 230 includes a fourth determining module, and if the electric energy meter has a lid opening record, the deviation value of the current of the live wire outside the electric energy meter is out of tolerance with the current of the live wire of the electric energy meter, and the current of the live wire outside the electric energy meter is greater than the current of the live wire of the electric energy meter, it is determined that the current of the live wire in the electric energy meter is electricity stealing.
Various embodiments of a power theft detecting apparatus have been specifically described in the above-mentioned one power theft detecting method, and thus will not be described.
To sum up, according to the electricity stealing detection device provided by the embodiment, according to the live wire current and the zero line current outside the single-phase electric energy meter, the abnormal electricity utilization studying and judging model is established by combining the read measured data and the read fault record data in the electric energy meter, the electricity stealing type and the electric energy meter fault, the electric energy meter fault and the wiring error can be accurately studied and judged, so that the working personnel can conveniently process the electricity stealing type and the electric energy meter fault, and the working efficiency is improved.
The embodiment provides an electricity stealing detector applied to an electric energy meter, which comprises an electricity stealing detection method or the second aspect, and further comprises an RS485 meter reading line, a live wire measuring current clamp and a zero line measuring current clamp, wherein the RS485 meter reading line is used for reading live wire and zero line current of the electric energy meter and cover opening records of the electric energy meter, and the live wire measuring current clamp and the zero line measuring current clamp are respectively used for measuring current of live wire and zero line outside the electric energy meter.
Specifically, the electricity stealing detector comprises a peripheral RS485 meter reading line interface and two current measuring clamp interfaces, so that data is led in, and the detector also comprises a processor and a memory inside so as to process and store the data.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for detecting electricity stealing is characterized by comprising the following steps,
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 an abnormal electricity utilization judgment model according to the measured current and the current read from the electric energy meter;
and judging the type of electricity stealing according to the abnormal electricity judgment model.
2. The electricity stealing detection method of claim 1, wherein a deviation value is calculated according to the current outside the electric energy meter and the current of the electric energy meter, and a deviation value threshold is set to determine the external electricity metering state of the electric energy meter.
3. The electricity stealing detection method of claim 2, wherein 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.
4. The method according to claim 2, wherein the deviation value of the current is calculated to obtain the deviation value of the current of the live wire and the neutral wire outside the electric energy meter, the deviation value of the current of the live wire and the neutral wire outside the electric energy meter and the deviation value of the current of the neutral wire and the electric energy meter.
5. The electricity stealing detection method according to claim 4, wherein if the measurement deviation value of the external fire and zero lines of the electric energy meter is qualified, the deviation value of the current of the live line between the outside of the electric energy meter and the electric energy meter is out of tolerance, and the current of the live line outside the electric energy meter is greater than the current of the live line of the electric energy meter, the short-circuit electricity stealing of the external fire line terminal of the electric energy meter is determined, and otherwise, the sampling fault of the current of the live line is determined.
6. The electricity stealing detection method according to claim 4, wherein if the deviation value of the current of the live wire outside the electric energy meter from the current of the live wire outside the electric energy meter is qualified, the deviation value of the measurement of the current of the live wire and the zero wire outside the electric energy meter is out of tolerance, and the current of the live wire outside the electric energy meter is smaller than the current of the zero wire outside the electric energy meter, the situation that the live wire outside the electric energy meter is overtopped is determined.
7. The electricity stealing detection method according to claim 4, wherein if the electric energy meter has no open-cover record and the deviation value of the current of the zero line between the outside of the electric energy meter and the electric energy meter is out of tolerance, the electric energy meter is judged to have zero line current sampling fault.
8. The electricity stealing detection method according to claim 4, wherein if the electric energy meter has an uncapped record, the deviation value of the current of the live wire outside the electric energy meter from the current of the live wire of the electric energy meter is out of tolerance, and the current of the live wire outside the electric energy meter is greater than the current of the live wire of the electric energy meter, the electricity stealing of the live wire current loop in the electric energy meter is determined.
9. The electricity stealing detection device is characterized by comprising a data acquisition module, a model construction module and a judgment module,
the data acquisition module is used for 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;
the model building module is used for building an abnormal electricity utilization judging model according to the measured current and the current read from the electric energy meter;
and the judging module is used for judging the type of electricity stealing according to the abnormal electricity utilization judging model.
10. An electricity stealing detector applied to an electric energy meter is characterized by comprising the electricity stealing detection method according to any one of claims 1 to 8 or the electricity stealing detection device according to claim 9, and further comprising an RS485 meter reading line, a live line measuring current clamp and a zero line measuring current clamp, wherein the RS485 meter reading line is used for reading live line and zero line currents of the electric energy meter and uncapping records of the electric energy meter, and the live line measuring current clamp and the zero line measuring current clamp are respectively used for measuring live line and zero line currents outside the electric energy meter.
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| CN116701947A (en) * | 2023-08-02 | 2023-09-05 | 成都汉度科技有限公司 | Method and system for detecting electricity stealing behavior |
| CN117434440A (en) * | 2023-12-20 | 2024-01-23 | 浙江万胜智能科技股份有限公司 | Automatic detection method and system for measuring switch |
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