电力系统保护与控制Issue(23)：69-75,7.
同塔双回高压直流输电线路故障行波特性研究
Study on fault travelling wave characteristics in double-circuit HVDC
周尚礼 1周全 1邬乾晋1
作者信息
- 1. 中国南方电网超高压输电公司检修试验中心，广东 广州 510663
- 折叠
摘要
Abstract
Owing to the shortage of transmission space, double-circuit HVDC on the same tower has been widely applied in the power construction. However, the electromagnetic coupling of different pole in two circuits makes the transient electrical characteristics complex when a fault occurs. The protection based on travelling-wave plays a main role in direct circuit protection, which makes great significance in the study of travelling-wave characteristics in double-circuit HVDC, so as to win the master of operating performance of line protection. As a result, based on the Bergeron line model, the method of phase-mode transformation and modulus calculation for line voltage and current when a fault happens in double-circuit HVDC is proposed firstly. Then the travelling wave characteristics in double-circuit HVDC and the difference from travelling-wave HVDC in single-circuit are analyzed systematically. After that, the influence factors of asymmetric transposition of transmission lines and frequency dependent parameter are taken into consideration. Finally, the theory is analyzed and verified in the platform of PSCAD/EMTDC. The results of this paper help to analyze the performance and the adaptability in double-circuit of the travelling wave protection based on single-pole electrical information.关键词
同塔双回/行波特性/模量/高压直流Key words
double-circuit/travelling wave characteristics/modulus/HVDC分类
信息技术与安全科学引用本文复制引用
周尚礼,周全,邬乾晋..同塔双回高压直流输电线路故障行波特性研究[J].电力系统保护与控制,2014,(23):69-75,7.
