首页|Implicit Function Based Open-loop Analysis Method for Detecting the SSR Using Identified System Parameters
Implicit Function Based Open-loop Analysis Method for Detecting the SSR Using Identified System Parameters
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This paper proposes an implicit function based open-loop analysis method to detect the subsynchronous res-onance(SSR),including asymmetric subsynchronous modal at-traction(ASSMA)and asymmetric subsynchronous modal repul-sion(ASSMR),of doubly-fed induction generator based wind farms(DFIG-WFs)penetrated power systems.As some important parameters of DFIG-WF are difficult to obtain,reinforcement learning and least squares method are applied to identify those important parameters.By predicting the location of closed-loop subsynchronous oscillation(SSO)modes based on the calculation of partial differentials of characteristic equation,both ASSMA and ASSMR can be found.The proposed method in this paper can select SSO modes which move to the right half complex planes as control parameters change.Besides,the proposed open-loop analysis method is adaptive to parameter uncertainty.Simulation studies are carried out on the 4-machine 11-bus power system to verify properties of the proposed method.
Open-loop modal analysisreinforcement learning based parameter identificationsubsynchronous resonance
Luonan Qiu、Tianhao Wen、Yang Liu、Q.H.Wu
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School of Electric Power Engineering,South China University of Technology,Guangzhou 510640,China
State Key Program of National Natural Science Foundation of ChinaNational Natural Science Foundation of China
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