电力系统保护与控制2016，Vol.44Issue(12)：149-154,6.DOI:10.7667/PSPC151280
特高压直流输电系统换流站故障过电压研究
Studyon fault overvoltage of converter station of UHVDC power transmission system
裴旵 1吕思颖 1秦昕 1要航1
作者信息
- 1. 广西大学电气工程学院，广西南宁 530004
- 折叠
摘要
Abstract
There are many capacitive and inductive components in converter station for±800kV DCpower transmission system, which is easy to cause overvoltage phenomenon when a short circuit fault occurred.Research on the characteristics of overvoltage under various operation and fault conditions to ensure the system's safe and stable operation is very important. A simulation model of the UHVDC power transmission project from Yunnan to Guangdong is built by using PSCAD software. To carry out thisresearch, two typical faults in convertstation are chosen:the short circuit fault between the top of convert valve and neutral bus, and single-phase ground fault occurred at the side of converter transformer. Research results show that higher overvoltage appears on the non-faulty pole when short circuit fault between the top of convert valve and neutral bus; among four upper rectifier bridge side of connected winding of convert transformer, the highest overvoltageappears at upper rectifier bridge side wye-wye connected winding of convert transformer when single-phase ground fault occurred.关键词
特高压直流输电/换流站/避雷器/短路故障/过电压Key words
UHVDC power transmission/converter station/arrester/short circuit fault/overvoltage引用本文复制引用
裴旵,吕思颖,秦昕,要航..特高压直流输电系统换流站故障过电压研究[J].电力系统保护与控制,2016,44(12):149-154,6.
