Subsynchronous Oscillations Study of Non-parallel Operating AC/DC System with Series Capacitor

摘要：

The first non-parallel operating AC/DC system with series capacitor being constructed in China is hybrid of the Hulunbeier-Liaoning ±500kV HVDC lines and Yimin-Fengtun 500kV AC transmission system. Its subsynchronous oscillation problem become complex because of the mutual effect of series capacitor compensation and HVDC. In order to analyze the SSO characteristic of this new grid structure,six cases derived from original system have been adopted: the islanded operating HVDC(Hulunbeier-Liaoning) system,the AC(Yimin-Fengtun) system without series capacitor and HVDC lines,the AC system with FSC and HVDC lines,the AC system with FSC+TCSC(two control strategy) and HVDC lines. Through the simulation of shaft torque and rotational speed of studied generators with multimass in different faults situations,the results show that the non-parallel operating AC/DC system can mitigate SSO caused by HVDC or FSC. The system characteristic is in association with the system structure,compensation type and control strategy of TCSC.

关键词： AC/DC TCSC SSO series compensator non-parallel operation

作者: Zheng Rui Xiao Xiangning Jin Wang

作者单位: Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control,North China El School of Electrical & Electronic Engineering,North China Electric Power University,Beijing

会议类型: 国际会议

会议名称: 2010年中国国际供电会议(CICED 2010)

会议地点: 南京

会议语种:英文

页码: 866-870

在线出版日期: 2010-09-13（万方平台首次上网日期，不代表论文的发表时间）