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A study on robust adaptive modulation controller for TCSC based on COI signal in interconnected power systems |
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| Authors: | Zexiang Cai Lin Zhu Zhou Lan Deqiang Gan Yixin Ni Libao Shi Tianshu Bi |
| Affiliation: | 1. South China University of Technology, Guangzhou 510640, PR China;2. Zhejiang University, Hangzhou 310027, PR China;3. The University of Hong Kong, Hong Kong, PR China;4. National Key Lab of Power System in Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China;5. North China Electric Power University, Beijing 102206, PR China |
| Abstract: | This paper proposes a novel robust adaptive modulation controller (RAMC) for thyristor controlled series capacitor (TCSC) in interconnected power systems to damp low frequency oscillation. The main idea of the controller is to drive the area centers of inertia (COI) to a stable equilibrium point and keep system synchronization. COI-coordinate-based model is derived first. Then RAMC for TCSC is derived using back-stepping method with COI dynamic signals from WAMS. The new controller performance is tested through a three-area power system and the simulation results show clearly that the new controller using COI signals has superior performance as compared with the conventional controller. |
| Keywords: | TCSC Power system low frequency oscillation Robust adaptive modulation controller WAMS COI |
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