快速接地开关对交流特高压同塔双回输电线路潜供电弧的限制  

Suppress Secondary Arc in Double UHVAC Circuit on the Same Tower by High Speed Grounding Switch

作　　者：林莘[1] 李学斌[1] 徐建源[1] 

机构地区：[1]沈阳工业大学电气工程学院,辽宁省沈阳市110870

出　　处：《电网技术》2010年第9期26-30,共5页Power System Technology

基　　金：高等学校博士学科点专项科研基金资助项目(20092102110001);教育部高等学校科技创新工程重大项目培育资金项目(707018);辽宁省教育厅项目(2006R40;2008T134)~~

摘　　要：以浙北—上海交流特高压同塔双回输电线路为例,计算了线路发生单相接地故障及双回同名故障后的潜供电流和恢复电压,分析了快速接地开关(high speed grounding switch,HSGS)对潜供电弧的限制效果,研究了HSGS的接地电阻对潜供电弧限制效果的影响。仿真结果表明:HSGS可以快速熄灭交流特高压同塔双回线路的潜供电弧,保证单相自动重合闸的成功率。Taking the double UHVAC transmission line on the same tower from North Zhejiang to Shanghai for example, in the simulation model for this transmission project, one of the two circuits is equipped with HV reactor at Shanghai side while the another is equipped with HV reactor at North Zhejiang side. The secondary arc currents and recovery voltages after single-phase earth fault occurred in single circuit and the same fault occurred in both circuits are calculated; the suppression effect of high speed grounding switch （HSGS） on secondary arc current is analyzed and the influence of grounding resistance of HSGS on the suppression effect of secondary arc current is researched. Simulation results show that HSGS can fast extinct secondary arc in double UHVAC transmission line on the same tower to improve the success rate of single-phase autoreclosure.

关 键 词：交流特高压 快速接地开关 潜供电流 恢复电压 同塔双回线路 

分 类 号：TM762[电气工程—电力系统及自动化]