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.
出处
《高压电器》
CAS
CSCD
北大核心
2015年第10期103-109,116,共8页
High Voltage Apparatus
