摘要
以含串补的交直流混合输电系统为研究对象,通过在交流系统中采取有效措施削弱次同步谐振。首先用可控串联电容补偿器(thyristor-controlled series capacitor,TCSC)代替部分固定串补;然后进行TCSC主电路参数选择和基于相位补偿法的TCSC附加次同步阻尼控制器设计;最后用PSCAD/EMTDC软件进行仿真验证。结果表明,该策略可以提高系统阻尼,有效抑制系统的次同步谐振,改善系统的稳定性。
Taking an AC/DC hybrid power transmission system as research object, the approach to inhibit subsynchronous harmonics in AC system is researched. Firstly, part of fixed series compensations are replaced by thyristor- controlled series capacitor （TCSC）. Then, the selection of main circuit parameters of TCSC and the design of additional subsynchronous damping controller （SSDC） are conducted. Finally, the research results are verified by the simulation using PSCAD/EMTDC. Simulation results show that the proposed control strategy can enhance system damping, suppress subsynchronous resonance （SSR） of the hybrid power transmission system and improve system stability.
出处
《电网技术》
EI
CSCD
北大核心
2009年第7期20-23,共4页
Power System Technology
基金
"十一五"国家科技支撑计划重大项目(2008BAA13B01)
国家自然科学基金项目(50595412
50577044)~~
关键词
次同步谐振
可控串联电容补偿器
相位补偿法
次同步阻尼控制器
subsynchronous resonance （SSR） thyristorcontrolled series capacitor （TCSC） phase compensation method
subsynchronous damping controller （SSDC）
