一起500kV变电站落冰引起的闪络事故原因分析  

Analysis of Flashover Fault Caused by Falling Ice at 500 kV Transformer Substation

作　　者：张溢戈 王栋 张世尧 陶亚光 李丰君 ZHANG Yige;WANG Dong;ZHANG Shiyao;TAO Yaguang;LI Fengjun(State Grid Henan Electric Zhengzhou Power Supply Company,Zhengzhou Henan 450052;State Grid Henan Electric Power Research Institute,Zhengzhou Henan 450052)

机构地区：[1]国网河南省电力公司郑州供电公司,河南郑州450052 [2]国网河南省电力公司电力科学研究院,河南郑州450052

出　　处：《河南科技》2020年第31期134-136,共3页Henan Science and Technology

摘　　要：本文以一起变电站系统内落冰通过母线间隔引起的闪络现象作为模型,讨论了落冰经过母线间隔时系统的静电场瞬时分布及其在数值模拟中的应用,并根据河南省某500 kV变电站设备参数,通过ANSYS Maxwell仿真得到了系统中的场强分布。计算结果表明,落冰的长度和与母线间的位置关系是影响电场分布的重要因素。该研究为变电站系统内落冰闪络原因分析提供了理论依据,具有重要意义。In this paper,a flashover phenomenon caused by ice falling through the bus compartment in a substation system was taken as a model.The transient distribution of electrostatic field in the system and its application in numerical simulation were discussed.According to the equipment parameters of a 500 kV substation in Henan Province,the field strength distribution in the system was obtained by ANSYS Maxwell simulation.The results show that the length of falling ice and the position relationship between the ice and the bus are the important factors affecting the electric field distribution.The study of ice flashover discharge mechanism provides a theoretical basis for the flashover caused by falling ice,and it makes a great significance.

关 键 词：变电站母线 落冰 闪络 放电机理 仿真计算 

分 类 号：TM63[电气工程—电力系统及自动化]