电力系统保护与控制2017，Vol.45Issue(10)：85-90,6.DOI:10.7667/PSPC160793
换流器保护在交流故障下的出口时序特性分析
Research on the trip timing order characteristics of converter protections under AC faults
张志强 1余超耘 2刘强 1蔡泽祥2
作者信息
- 1. 广东省输变电工程公司,广东 广州 510160
- 2. 华南理工大学电力学院,广东 广州 510640
- 折叠
摘要
Abstract
This paper analyses the problem that the converter protections act uncertainly under different kinds of AC fault. Various internal faults and protections of converter zone are summarized, and the types of protection which can response to AC faults and the response mechanism are analyzed based on the RTDS experimental results of an actual UHVDC transmission system. This paper also analyses the uncertain electrical characteristics when faults occur as well as the timing principle of converter protections in detail, and points out that these are the two causes of the uncertain action of a converter protection. Further more, the logics of the protections whose trip order are uncertain under different faults are compared and the characteristics of their trip timing orders under different faults are analyzed based on the RTDS experimental results above. It reveals that the setting trip times of these protections are about the same, and one can probably be blocked by the others so that the trip timing orders under different faults determine the different action results.关键词
HVDC/交流故障/换流器保护/响应特性/出口时序Key words
HVDC/AC fault/DC converter protection/response characteristics/trip timing order引用本文复制引用
张志强,余超耘,刘强,蔡泽祥..换流器保护在交流故障下的出口时序特性分析[J].电力系统保护与控制,2017,45(10):85-90,6.
