A multi-dimensional combined method to discover power theft of special variable metering devices
A metering device, multi-dimensional technology, applied in the direction of measurement device, measurement of electrical variables, measurement of time integration, etc., can solve the problems of short-circuit shunt electricity stealing on the secondary side, difficult current transformers, etc., and achieve a comprehensive effect of the judgment method.
Active Publication Date: 2022-01-25
ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
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Problems solved by technology
[0005] In view of this, the present invention aims to solve the problem that it is difficult to timely and accurately find the current transformer secondary side short circuit, shunt and electricity theft using existing methods
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[0034] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following description The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] see figure 1 , the present embodiment provides a multi-dimensional combination method for discovering power theft by a specific variable metering device, including the following steps:
[0036] S101: Analyze and obtain the common characteristics of the user when the secondary side of the current transformer is ...
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The present invention provides a multi-dimensional combination method for discovering electricity stealing by special variable metering devices, including: analyzing and obtaining the common characteristics of users when short-circuiting and shunting electricity on the secondary side of current transformers, including reduced power consumption and power outages Operation and line loss rate increase; respectively determine the sampling period of power consumption, power failure operation and line loss rate; then calculate and determine the characteristic value of electricity consumption reduction and its first weight coefficient, In the sampling period of the power failure operation, it is indicated whether the identification feature value and the second weight coefficient of the power failure operation and the line loss rate increase feature value and the third weight coefficient thereof in the sampling period of the line loss rate; according to each feature value and The weight coefficient is calculated to obtain the comprehensive eigenvalue; it is judged whether the comprehensive eigenvalue exceeds the preset threshold, and if so, the suspected power theft alarm list is output. The method solves the problem that it is difficult to timely and accurately discover the current transformer secondary side short-circuit shunting current stealing problem in the existing methods.
Description
technical field [0001] The invention belongs to the technical field of metering automation, and in particular relates to a multi-dimensional combination method for discovering electricity stealing by a variable metering device. Background technique [0002] The special variable metering device is a metering device installed at users with large electricity consumption. It is a "weighing pole" for trade settlement between power supply companies and users, and protects the legitimate rights and interests of both parties. However, some users attempt to inaccurate or invalidate the electric energy metering device of the power supply company, so as to achieve the purpose of paying less or not paying electricity bills. In this way, it is extremely important to detect the abnormality of the metering device in time and accurately, and to ensure that the metering device is accurate and reliable. Common electricity theft methods include voltage loss method, shunt method, etc. With the...
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IPC IPC(8): G01R22/06G01R11/24
CPCG01R22/066G01R11/24
Inventor 焦海锋余永奎邓芳刘嘉绮陈珊珊何敏生吴智海朱俏婷谢玲张俊超林永结
Owner ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID