摘要
中国内蒙古上都、托克托电厂输电工程由于采用较高补偿度的固定串联补偿装置,导致出现了次同步谐振(SSR),并且表现出多个模式同时失稳的特点,威胁机组和电网的安全。该文以上都串补输电系统为研究对象,采用特征值分析方法,分析了上都电厂多模式SSR的产生机理和影响因素;采用遗传-模拟退火算法(GASA)对附加励磁阻尼控制器(SEDC)进行优化设计。特征值分析与PSCAD/EM TDC仿真结果表明该控制器能够有效抑制多模式SSR,并对电网参数及运行方式变化具备良好的适应能力。
The Shangdu and Tuoketuo of Inmongolia in China transmission systems use relatively high compensation levels of fixed-series capacitors which results in sub-synchronous resonance （SSR）. This issue is hard to correct because of the multiple unstable SSR modes. This paper presents a study of a specific Shangdu transmission system. The eigenvalues were analyzed to investigate the basic mechanism and the main causes of the multi mode SSR. Supplementary excitation damping control was then used to solve the problem with optimal control parameters obtained using a genetic, simulated annealing algorithm. An eigen-analysis and PSCAD/EMTDC-based simulations verify the effectiveness of the damping control for mitigating the multi-mode SSR and its adaptability to various power systems and operating conditions.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第4期457-460,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家"九七三"重点基础研究基金项目(2004CB217906)
关键词
多模式次同步谐振
特征值分析
附加励磁阻尼控制器
遗传-模拟退火算法
multi-mode sub-synchronous resonance
eigenvalue analysis
supplementary excitation damping control
genetic and simulated annealing algorithm
