摘要
从特高压交流变电站高、中压侧母线等值自阻抗的组成要素出发,分析确定了特高压变电站母线短路电流的影响因素,给定了特高压变电站1000kv侧交流电网结构、特高压交流变电站主变压器以及500kV侧交流电网结构对高压侧和中压侧母线短路电流影响的比重关系。分析结果表明,特髙压交流变电站高压侧母线的短路电流主要受1000kV侧交流电网结构的影响,而中压侧母线短路电流主要受500kV侧电网结构和特高压站主变压器的影响。研究结论可为特高压交流站近区电网限流措施的优化提供理论支撑。
The affecting factors of short-circuit currents of 1 000 kV and 500 kV bus-bar at UHV AC substation are analyzed based on the components of corresponding self-impedance. And then the proportions of all factors to the short-circuit currents at 1 000 kV bus-bar and 500 kV bus-bar are proposed and determined, including the configuration of 1 000 kV power grid, the main transformer and the configuration of 500 kV power grid. The results indicate that the short-circuit currents of 1 000 kV bus-bar are greatly affected by the configuration of 1 000 kV power grid. The 500 kV power grid and the main transformer have a dominant influence on the short-circuit currents of 500 kV bus-bar at UHV AC substation. The results can provide theoretical support and decision-making reference for the optimization of short-circuit limit.
作者
唐金锐
杨凡奇
侯婷婷
黄娟娟
邵冲
吴小珊
TANG Jinrni;YANG Fanqi;HOU Tingting;HUANG Juanjuan;SHAO Chong;WU Xiaoshan(School of Automation,Wuhan University of Technology,Wuhan 430070,China;Economics &Technology Research Institute,State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077,China;Central Southern China Electric Power Design Institute Co.,Ltd. of CPECC,Wuhan 430071,China;Research Institute Co.,Ltd. of China Southern Power Grid,Guangzhou 510080,China)
出处
《中国电力》
CSCD
北大核心
2019年第4期66-73,共8页
Electric Power
基金
国家自然科学基金资助项目(51607130)~~
关键词
特高压
交流变电站
短路电流
自阻抗
等值电路
UHV
AC substation
short-circuit current
self-impedance
equivalent circuit
