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Abnormal electricity judgment method based on current abnormality analysis

A technology for abnormal current and abnormal power consumption, which is applied in the direction of measuring electrical variables, measuring time integration, and measuring devices, etc., which can solve the problems of poor pertinence of anti-stealing inspections, difficulty in discovering electricity theft behavior, and inability to detect user electricity theft behavior in time , to achieve the effect of improving power supply reliability, preventing and monitoring electricity theft

Inactive Publication Date: 2015-03-25
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0004] (1) Although the on-site manifestations of electricity theft are various, the existing anti-theft measures for various specific electricity theft methods can no longer adapt to the new type of electricity theft
[0005] (2) Due to the failure to effectively integrate the electricity consumption information of electricity customers during the anti-stealing inspection, the anti-stealing inspection is less targeted
[0006] (3) The electricity stealing behavior of users cannot be discovered in time, and some electricity stealing behaviors are often discovered only when the general survey or line loss is abnormal. For the situation of resisting inspection and destroying evidence, the electricity stealing behavior is difficult to find

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  • Abnormal electricity judgment method based on current abnormality analysis

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Embodiment Construction

[0025] see figure 1 , the method for judging abnormal electricity consumption based on abnormal current analysis of the present invention, the abnormal current analysis includes two analysis methods: abnormal current loss analysis and abnormal current imbalance analysis;

[0026] The process of the abnormal analysis of the current loss is as follows:

[0027] First, determine that the voltage range of the ammeter is 0.7 to 0.9 rated voltage (ABC three-phase voltage must meet this voltage range), and then determine whether the user's ammeter is connected in a three-phase three-wire system or a three-phase four-wire system;

[0028] If the user's ammeter connection mode is three-phase three-wire system, then detect the ABC three-phase current of the user's ammeter, if the current of any phase in the AC phase is less than 0.5% of the rated current and the B-phase current is not less than 5% of the rated current, then determine the current of the ammeter. Abnormal drain flow;

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Abstract

The invention discloses an abnormal electricity judgment method based on current abnormality analysis. The method comprises current loss abnormality analysis and current unbalance abnormality analysis. Phase currents of three or more monitoring points need to be monitored within one day for current loss abnormality analysis, and monitoring is continuously carried out for three days. If current loss abnormality analysis results of the three or more monitoring points in the three consecutive days all determine current loss abnormality, abnormal electricity of a user is finally determined. Phase currents of at least ten monitoring points need to be monitored within one day for current unbalance analysis, and monitoring is continuously carried out for at least three days. If current unbalance analysis results of the monitoring points in the three consecutive days all determine current unbalance, abnormal electricity of the user is finally determined. The abnormal electricity judgment method based on current abnormality analysis has the advantages that electricity information of the power user can be mastered in time, electricity stealing behaviors can be prevented and monitored, and electricity supply reliability can be improved.

Description

technical field [0001] The invention relates to a method for judging abnormal electricity consumption based on abnormal current analysis. Background technique [0002] With the rapid development of urban construction, the demand for electricity in various industries continues to expand. However, with the rapid development of the economy and the continuous increase of electricity consumption, the problem of electricity theft has become more and more prominent. The power behavior is more concealed, causing serious power loss for power supply companies. The problem of stealing electricity not only affects the normal order of power supply and consumption of electric power enterprises, but also seriously affects economic development and social stability. Therefore, only by better improving the level of anti-stealing technology, completely plugging the loopholes of stealing electricity, and creating a good order of power supply and consumption, can we better escort the rapid dev...

Claims

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Application Information

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IPC IPC(8): G01R11/24
Inventor 任玮蒙许庆谢智奕许树实胡斌顾群许伟
Owner STATE GRID CORP OF CHINA
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