Control method and system of electricity theft detection used for medium and low voltage mixed power distribution network

Abstract

The invention provides a control method and a system of electricity theft detection used for a medium and low voltage mixed power distribution network. The method includes: in the selected medium and low voltage mixed power distribution network, a set M including n to-be-detected nodes is set, a to-be-detected node Mi is selected and measured, power index values of the medium and low voltage mixed power distribution network are obtained, the weight of a measuring value is set, state estimation calculation of the medium and low voltage mixed power distribution network is conducted, and an active load estimation value of Mi is obtained; the active load estimation value of Mi and the practical measuring value are compared, if an absolute value obtained by subtracting the practical measuring value from the active load estimation value is greater than a preset detection threshold, it is determined that Mi has electricity theft behaviors; and another Mi is selected from the set M, the above operation process is repeated, and the process is stopped until the determination of electricity theft behaviors of all Mis in the set M is accomplished. According to the method and the system, problems that the analysis results of electricity theft are inaccurate and users with electricity theft cannot be discovered via the prompts of a meter device or regular manual inspection at the spot are solved.

Description

Technical field [0001] The present invention relates to the technical field of power network control, in particular to a control method and system for power theft detection of a medium and low voltage mixed distribution network. Background technique [0002] Non-technical loss (NTLS) represents the financial loss of the power company. NTLS mainly includes energy theft, arrears customers, miscalculation and accounting, among which energy theft has always been a serious problem. According to statistics, the theft of energy across China has reached billions of dollars each year. Energy theft not only affects normal power supply and harms the interests of power companies, but also severely endangers public safety, leading to fires and other accidents. Power companies have made many attempts to detect electricity theft, but electricity theft is still widespread. [0003] For electricity theft, the power company generally conducts manual inspections based on prompts from meter devices...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a control method and system for electric stealing detection of medium and low voltage hybrid distribution network, so as to solve the problem that the current power company uses the reminder of the meter device or regularly goes to the site for manual inspection. This leads to inaccurate analysis results of electricity theft, and even the failure to discover the problem of electricity theft users

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