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This paper presents implementations of a laboratory-scaled static synchronous compensator (STATCOM) for reactive power compensation for unbalanced voltage sags. In order to attenuate the effects of coupling terms between sequence components, double decoupled synchronous reference frame (DDSRF) current controllers are implemented. Under this framework, adequate decoupling between positive and negative...
Recent studies about Taiwan power system indicate that this system exhibited voltage stability problems under severe N-2 contingencies in heavily loaded hours. We will report feasibility studies of using STATCOM to mitigate this problem. The singular value decomposition method will be utilized to identify weakest buses for STATCOM placement. The required rating is determined by planning criteria....
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