电测与仪表2017，Vol.54Issue(1)：46-50,5.
考虑电网多节点暂降的故障线路严重度评估
Severity evaluation of fault lines considering voltage sags at multiple buses in power system
摘要
Abstract
A new method for evaluating the severity of fault lines is presented to overcome the shortcomings of existing sag methods for exposed area analysis .Based on fault positions method , average voltage magnitude index and the numbers of buses which suffer voltage sag with different magnitudes are used to describe the severity of fault positions . The weights of indexes are determined by using entropy method and the comprehensive severity coefficients of fault po -sitions are then calculated .Average the comprehensive severity coefficient of fault positions which are in a same line to get the comprehensive severity coefficient of each line , and after that , the fault line can be sorted considering the effect of voltage sag at multiple sensitive load buses .Simulation example shows that the proposed method can quantita-tively evaluate the severity of fault positions and lines , and can provide some references for adopting sag mitigation measures.关键词
电压暂降/故障点法/熵权法/严重度系数Key words
voltage sag/fault positions method/entropy method/severity coefficient分类
信息技术与安全科学引用本文复制引用
林芳,肖先勇,唐琳..考虑电网多节点暂降的故障线路严重度评估[J].电测与仪表,2017,54(1):46-50,5.
