摘要
以±800 kV直流输电线路带电作业为例,对电容模型进行改进,改进后的电容模型考虑另外一根极线的影响。采用有限元法对两种模型情况下的电容参数进行计算,并对不同转移距离下的电位转移电流进行计算。计算结果表明:基于两种模型计算出的转移电流随转移距离的变化规律是一致的;基于改进后的电容模型计算出的转移电流较改进前的模型计算出的转移电流大,研究结果可为输电线路带电作业转移电流的计算提供参考。
Taking the live operation of ±800 kV DC transmission line as an example, the capacitance model is improved, and the improved capacitance model considers the influence of another pole line. The capacitance parameters under the two models are calculated by finite element method, and the potential transfer current under different transfer distances is calculated based on the two models. The calculation results show that the change rule of transfer current with transfer distance calculated based on the two models is consistent. The transfer current calculated based on the improved capacitance model is larger than that calculated by the model before improvement. The research results can provide reference for the calculation of transfer current in live working of transmission lines.
作者
李金亮
杨淼
隆晨海
任卉嵩
雷冬云
曾益
LI Jinliang;YANG Miao;LONG Chenhai;REN Huisong;LEI Dongyun;ZENG Yi(State Grid Hunan Electric Power Company Limited Research Institute,Changsha 410007,China;State Grid Hunan Maintenance Company,Changsha 410004,China;State Grid Changsha Power Supply Company,Changsha 410015,China;State Grid Shaoyang Power Supply Company,Shaoyang 422000,China)
出处
《湖南电力》
2020年第3期73-76,共4页
Hunan Electric Power
