±800kV特高压直流换流阀避雷器的工况分析及其关键技术的研究  

Operating Condition Analysis of ±800 kV UHVDC Converter Valve Surge Arrester and Its Key Technology Study

作　　者：赵冬一 胡淑慧 王坤[2] 常鹏 李凡[3] 

机构地区：[1]南阳金冠电气有限公司,河南南阳473000 [2]国网河南省电力公司南阳供电公司,河南南阳473000 [3]西安高压电器研究院有限责任公司,西安710077

出　　处：《高压电器》2015年第10期103-109,116,共8页High Voltage Apparatus

摘　　要：换流阀避雷器是±800 kV特高压直流换流站的关键过电压保护设备之一,其技术研究和产品开发是实现特高压直流设备国产化的一个重要课题。笔者在介绍了双12脉动换流阀的工作原理的基础上,分析了换流阀避雷器的稳态应力和暂态应力,提出了阀避雷器的主要技术参数的制定原则。以中国向家坝—上海特高压直流工程为依托,深入研究了±800 kV特高压直流换换流阀避雷器的关键技术。最后笔者指出:选择合适的荷电率和散热结构是阀避雷器整只设计时必须考虑的关键技术问题,也提出了一种多柱并联电阻片技术,可以为避雷器提供高的比能量吸收能力的技术支持。Converter valve surge arrester is one of the key overvohage protection devices for ＋800 kV UHVDC converter station and its technology research and product development is an important task to realize the localization of UHVDC equipment. Based on the introduction of operating principle of dual 12 pulse converter valves, the steady-state stress and the transient stress of converter valve arresters are analyzed. The rules to develop the main technical parameters of valve arresters are proposed. The key technologies of ＋800 kV UHVDC converter valve surge arresters are deeply studied with Xiangjiaba-Shanghai UHVDC project. Finally the author points out that： to choose the appropriate chargeability and thermal structure is the key technical problem when complete design of valve surge arrester must be considered. The paper also puts forward a column parallel resistance more technology, can provide arrester with high specific energy absorption capacity of technical support.

关 键 词：±800 kV特高压直流 换流阀 金属氧化物避雷器 过电压保护 

分 类 号：TM721.1[电气工程—电力系统及自动化]