Comparative study of proportional and TS fuzzy controlled GCSC for SSR mitigation
Comparative study of proportional and TS fuzzy controlled GCSC for SSR mitigation
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比例和 TS 模糊控制 GCSC 缓解 SSR 的比较研究
DOI：
10.1109/powereng.2009.4915145
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
A. Shoulaie
中科院分区：
文献类型：
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作者：
H. Mohammadpour;S. Mirhoseini;A. Shoulaie
次同步谐振(SSR)在汽轮发电机串联补偿输电线路的电力系统中是一个潜在的问题。灵活交流输电系统(FACTS)控制器被广泛应用于抑制SSR。提出了两种门控串联电容器(GCSC)SSR衰减的控制方法。一种是基于比例(P)控制器的恒功率控制，另一种是基于Takagi-Sugeno(TS)型模糊逻辑控制器的恒功率控制。采用了第一个用于分析SSR现象的IEEE基准模型。用MatLab程序验证了控制SSR的实际可行性。对三种不同的GCSC评级进行了评估。结果表明，在所有考虑的GCSC额定值中，所设计的基于P控制器的恒功率控制的GCSC虽然能抑制SSR，但不能为系统提供良好的动态响应。对比例控制器和TS模糊控制器进行了比较研究，结果表明，TS模糊控制GCSC的性能优于P控制GCSC，并能较好地抑制SSR和机电功率振荡。
The subsynchronous resonance (SSR) is a potential problem in power systems having a steam turbine-generator connected to a series compensated transmission line. Flexible ac transmission systems (FACTS) controllers are widely applied to mitigate SSR. In this paper, two control ways for SSR damping for the gate-controlled series capacitor (GCSC) are presented. The first method is constant power control based on proportional (P) controller and the other one is based on Takagi-Sugeno (TS)-type fuzzy logic controller. The First IEEE Benchmark Model for the analysis of the SSR phenomenon is adopted. The actual possibility of controlling SSR was verified by MATLAB program. Three different GCSC ratings are evaluated. It will be shown that although the GCSC with the designed constant power control based on the P controller in the all considered GCSC ratings can damp SSR, it can not prepare a good dynamic response for the system. A comparative study between proportional and TS fuzzy controller is carried out showing that the performance of TS fuzzy controlled GCSC is better than that of P controlled GCSC, and SSR as well as electromechanical power oscillation can be properly damped by this method.