±800kV特高压直流换流站过电压保护特点及直流暂态过电压计算  

Characteristics of Over Voltage Protection in ±800 kV Ultra High Voltage Direct Current Convert Station

作　　者：安萍[1] 苟锐锋[1] 程晓绚[1] 周晓琴[1] 

机构地区：[1]西安高压电器研究所,陕西西安710077

出　　处：《高压电器》2007年第5期351-353,共3页High Voltage Apparatus

摘　　要：分析总结了±800 kV特高压每极2个400 kV 12脉动换流器串联结构直流换流站的过电压保护特点,将其与现有±500 kV直流工程换流站的过电压保护作了比较。同时以±800kV具体直流工程为例,选取典型故障工况,在考虑避雷器保护特性的条件下,对换流站几个关键点的典型操作过电压进行了简单模拟计算。计算结果为确定UHVDC输电工程换流站主要避雷器保护水平及主设备耐受水平提供了参考。This paper analyzed and summarized characteristics of over voltage protection in±800 kV ultra high voltage direct current each pole had two 400 kV 12 pulse converter in series, and compared with that of ±500 kV HVDC convert station. Meanwhile, instancing practical UHVDC project, typical fault status were selected, simple simulated calculations of switching impulse over voltage were performed to several key spot in convert station under the condition of arrester＇s protection. The results provided the references to protection level of main arrester, and to the withstand voltage level of facility in UHVDC convert station.

关 键 词：特高压直流 换流站 过电压 避雷器 

分 类 号：TM86[电气工程—高电压与绝缘技术]