Power distribution network single-phase fault processing technology evaluation method and system based on safety protection

Abstract

The invention provides a power distribution network single-phase fault processing technology evaluation method and system based on safety protection. The method comprises the following steps: constructing a risk probability model corresponding to each measure of power distribution network single-phase fault processing; constructing a power distribution network scale grade risk hazard value model; constructing a power distribution network single-phase fault processing risk evaluation model; obtaining a corresponding risk probability total value and a risk hazard value based on the actual processing technical condition of a power distribution network single-phase fault, and comparing a product value of the risk probability total value and the risk hazard value with an evaluation reference critical value in a power distribution network single-phase fault processing risk evaluation model to obtain corresponding evaluation content. According to the method, a power distribution network single-phase earth fault processing evaluation model is provided, evaluation indexes and design grading threshold values are formulated, quantitative indexes and indications are provided for personal safety risks of various power distribution networks in power supply enterprises, the personal safety risk pre-control capability of the power distribution networks is improved, and casualties and property losses are reduced.

Description

technical field [0001] The invention belongs to the field of distribution network fault processing, in particular to an evaluation method and system for a single-phase fault processing technology of distribution network based on safety protection. Background technique [0002] Accidents of personal electric shock injuries caused by single-phase faults in distribution network occur from time to time all over the country, and there are great hidden dangers to personal safety. The structure of the distribution network is complex, the environment is changeable, and it goes directly to the user terminal, which can easily cause single-phase faults and cause vicious electric shock accidents. Personal electric shock accidents caused by single-phase faults in the distribution network often occur all over the country (see Document 1 : Xu Bingyin, Li Tianyou, Xue Yongduan. Distribution Network Electric Shock Protection and Neutral Point Grounding Method[J]. Power Supply, 2017,34(05):21...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an evaluation method and system for single-phase fault processing technology of distribution network based on security protection, so as to solve the problem of lack of security-based protection in distribution network The technical constraint index and evaluation method of single-phase ground fault treatment in distribution network can easily lead to electric shock accidents and endanger the safety of personal equipment; the evaluation system established by this method can accurately evaluate the fault treatment and effectively guide the single fault treatment of distribution network , improve the level of personal safety protection, and reduce the hidden dangers of personal and equipment safety caused by single-phase faults in the distribution network

Images