基于多指标综合评价的配电网接地故障山火风险等级划分OA北大核心CSTPCD

In recent years,forest fires caused by power faults have occurred from time to time.If a ground fault in power distribution is not cut off in time,the fault arc discharge may ignite the surrounding vegetation,thereby leading to a forest fire.A method for dividing the forest fire risk levels(FFRLs)caused by a ground fault on distribution lines(DLs)based on multiple index comprehensive evaluation is proposed in order to carry out forest fire prevention measures in a differentiated manner.This paper analyzes the relevant forest fire risk factors based on the integration of unmanned aerial vehicle patrol data,the historical fault data of DLs,meteorological data and the self-designed experiment of an arc combustion characteristic parameter(ACCP).The weights and risk scores of various forest fire risk factors are determined by a Delphi technique network-analytic process.Then the comprehensive risk score is calculated by weighting and summing the factors.The FFRLs of DLs can be determined.An actual case analysis with a 10 kV DL in the Hunan power grid verifies that the method can divide FFRLs of DLs accurately,clarify the important sections of forest fire prevention and control of DLs,and a powerful reference can be provided for the ground fault disposal device of DLs facing forest fire prevention and control.