特高压同塔双回线路潜供电弧抑制措施的比较  

Comparison of Two Measures on Restricting Secondary Arc in UHV Double Circuit Lines on the Same Tower

作　　者：李振强[1] 谷定燮[1] 修木洪[1] 

机构地区：[1]国网电力科学研究院,武汉430074

出　　处：《高电压技术》2010年第10期2388-2392,共5页High Voltage Engineering

基　　金：国家"十一五"科技支撑计划重大项目(2006BAA02A02)~~

摘　　要：为研究中性点小电抗和高速接地开关(HSGS)两种方法抑制特高压同塔双回线路潜供电弧的异同,及其各自的适用条件和范围,阐述了我国特高压同塔双回线路的特点,对中性点小电抗和HSGS限制潜供电流和恢复电压的原理、特性分别进行了理论分析,并利用电磁暂态仿真软件EMTP对线路分别采用小电抗和HSGS后在多种运行工况下的潜供电流和恢复电压进行了模拟计算。根据研究结果并对其进行比较分析,提出小电抗和HSGS两者的适用条件差异较大,应用范围基本上是相互补充的;在限制同塔双回线路同名相或异名相故障潜供电流和恢复电压方面,HSGS的作用效果优于小电抗。In order to study the differences between neutral reactor and high speed grounding switch（HSGS）on restricting the secondary arc in UHV double circuit lines on the same tower,and to find their own application conditions and range,we analyzed the characteristics of UHV double circuit lines on the same tower in our country and the principle and characteristics of neutral reactor and HSGS on restricting the secondary arc current and recovery voltage,and adopted the EMTP program to calculate the secondary arc current and recovery voltage under multiple working conditions when neutral reactor and HSGS are applied respectively on UHV transmission lines.The results and comparison reveal that the application conditions of neutral reactor and HSGS are different,their applied range is nearly complementary,and HSGS is better than neutral reactor on restricting secondary arc current and recovery voltage of the same-named phase and different-named phase fault of double circuits line.

关 键 词：特高压 同塔双回线路 潜供电流 恢复电压 中性点小电抗 高速接地开关 EMTP 

分 类 号：TM723[电气工程—电力系统及自动化]