同塔双回直流输电系统中GRTS转换异常分析  

Analysis of an Abnormal GRTS Transfer in DC Double Circuit Transmission System

作　　者：李劲彬 卢军[2] 邓万婷[1] 全江涛[1] 涂彩琪[1] 

机构地区：[1]国网湖北省电力公司电力科学研究院,武汉430077 [2]国网湖北省电力公司,武汉430000

出　　处：《高压电器》2015年第11期194-198,共5页High Voltage Apparatus

摘　　要：文中研究所涉实例为国内首次现场采用实施的直流线路同塔双回工程。由于直流线路同塔并架所造成的线路感应电压升高,对换流站中性区域设备和直流开关的影响无可借鉴的历史经验。笔者结合一起GRTS直流开关转换异常事件,研究分析了该类问题的起因与隐患,并提出了相应的反事故措施建议,对今后直流线路同塔并架系统中换流站内设备的绝缘水平设计、运维检修工作均有借鉴意义。This article involves the first DC double circuit transmission project in China. The double parallel lineson the same tower have caused the rise of the transmission line induced voltage. It has affected the neutral zoneequipment in the DC field of the convertor station and has no experience reference. The article describes an abnormalGRTS transfer accident, and researches its cause and potential danger. According to the result, the article proposessome anti-accident measures and suggestions. The conclusion is useful both for the design of the equipments＇insulation level and operational maintenance work.

关 键 词：直流开关 大地回线转换开关 金属回线转换断路器 振荡回路 同塔双回 

分 类 号：TM721.1[电气工程—电力系统及自动化]