摘要
在上都电厂串补输电系统上进行附加励磁阻尼控制(supplementary excitation damping control,SEDC)抑制次同步谐振(subsynchronous resonance,SSR)的现场试验,介绍试验的运行环境、操作内容和主要结果。试验表明:上都电厂串补输电系统存在SSR风险,尤其是模态2在3/4台机并网运行、上承1回线方式下会出现发散现象,危及机网安全;而SEDC能显著提高扭振模态阻尼,加快SSR收敛速度,有效抑制SSR发散;试验涵盖了各种运行方式和操作,表明SEDC具有良好的适应性;现场实测和仿真结果的比较分析表明他们之间是吻合的。这是国内第1次以现场试验方式验证串补输电系统的SSR发散风险和SEDC的抑制效果,为SEDC抑制次同步谐振的进一步工程应用奠定基础。
Filed tests were conducted to validate the effectiveness of supplementary excitation damping control （SEDC） for mitigating subsynchronous resonance （SSR） in Shangdu series-compensated transmission system. The operating conditions, testing procedures and main results of the test are presented. The test shows that the system is threatened by SSR, especially the torsional mode No.2, which tends to diverge under the operating condition of 3 or 4 machines online and one Shangdu-Chengde line in service. SEDC can considerably enhance torsional damping, and thus effectively depress SSR. Field tests were carried out under different system conditions and with various operations, demonstrating the robustness of the developed SEDCs. Comparative analysis has also been performed between field tests and the simulation study, which indicates good consistence between them. This is the first time in China that practical SEDCs have been developed and their effectiveness in damping SSR has been verified in a real series-compensated system. It represents an important step toward engineering application of SEDC in SSR-mitigation in China.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第1期27-32,共6页
Proceedings of the CSEE
基金
国家重点基础研究发展计划项目(973项目)(2004CB217906)
国家电网公司科技项目资助(20090857)~~
关键词
附加励磁阻尼控制
次同步谐振
串补输电系统
现场试验
supplementary excitation damping control （SEDC）
subsynchronous resonance （SSR）
series-compensated system
field test
