基于PSCAD的输电线路防雷设计优化  

PSCAD-based Design Optimization of Lightning Protection of Transmission Lines

作　　者：蒙伟国 徐世杰 MENG Weiguo;XU Shijie(Guangxi Power Transmission and Transformation Survey and Design Co.,Ltd.,Nanning 530031,China;Guangxi University,Nanning 530004,China)

机构地区：[1]广西送变电勘察设计有限公司,广西南宁530031 [2]广西大学,广西南宁530004

出　　处：《电工技术》2023年第19期161-163,168,共4页Electric Engineering

摘　　要：某风电场新建线路的防雷性能评估仅考虑反击跳闸率不足以满足实际工程需求,因此在考虑反击跳闸率的基础上,增加绕击跳闸率及综合跳闸率的评判标准,此外针对避雷器的选型也作出了理论判断。采用PSCAD软件对输电线路进行模拟仿真,计算绕击与综合跳闸率,并根据风险等级的不同,采取差异化改造,对比优化前后结果。The lightning protection performance evaluation of a new transmission line in a wind farm considers only back striking-induced tripping rate and thus is incompetent to satisfy practical engineering requirements.Therefore,in addition to back striking-induced tripping rate,the present work analyzes evaluation criteria for shielding failure-induced tripping rate and total tripping rate and brings them into consideration.In addition,a theoretical judgment is also made on the selection of arresters.PSCAD software is employed to simulate transmission line and calculate shielding failure-induced and total tripping rate.According to the risk level,differentiated reformations are conducted and the results before and after optimization are compared.

关 键 词：防雷优化设计 避雷器选型 跳闸率 差异化改造 PSCAD 

分 类 号：TM89[电气工程—高电压与绝缘技术]