电测与仪表2024，Vol.61Issue(3)：70-75,6.DOI:10.19753/j.issn1001-1390.2024.03.010
基于组合赋权法分析后续回击对线路反击跳闸影响研究
Research on influence of subsequent return stroke on line counterattack trip based on combination weighting method
摘要
Abstract
In order to explore the impact of subsequent return stroke(SRS)on the counterattack trip rate of 500 kV trans-mission line,this paper calculates the number of SRS and the distribution law of lightning current amplitude.Then,the influence of the first return stroke with and without SRS,and the number of SRS and lightning current amplitude on the line counterattack trip are analyzed by combination weighting method.According to the influence proportion of these fac-tors,it is determined that the number of SRS is the main influencing factor of line counterattack tripping.According to the analysis results of combination weighting method,this paper proposes a counterattack flashover model considering SRS,and analyzes the impact of SRS on the level of lightning resistance of counterattack through ATP-EMTP model.The simu-lation results show that when the line does not trip under the first return stroke,the lightning withstand level of the line considering SRS will be reduced.The reduction degree is related to the power frequency voltage period of the conductor,and the average lightning withstand level of the original counterattack is reduced by 36.4％.The simulation results are consistent with the theoretical analysis results,which can provide effective theoretical support for transmission line opera-tion and maintenance and lightning protection design.关键词
后续回击/组合赋权法/反击跳闸/ATP-EMTPKey words
subsequent return stroke/combination weighting method/counterattack trip/ATP-EMTP分类
信息技术与安全科学引用本文复制引用
甘艳,柳双,肖劲松,顾德文,汪旸,杜志叶..基于组合赋权法分析后续回击对线路反击跳闸影响研究[J].电测与仪表,2024,61(3):70-75,6.基金项目
国家自然科学基金资助项目(51977152) （51977152）
国家电网公司华中分部科技项目(SGHZ0000,AJQT1900200) （SGHZ0000,AJQT1900200）
