Affiliation:
1. Zhejiang University
2. State Grid Shanghai Municipal Electric Power Company
Abstract
This paper investigates the effect of Unified Power Flow Controller (UPFC) on the risk of cascading failure which resulted from adverse weather based on the risk-based security assessment (RBSA) method. An improved piecewise probability model is described to reflect the impact of adverse weather condition and overloads. Based on power-injection model of UPFC, an optimal power flow control strategy is integrated into the RBSA procedure to relieve the risk of cascading failure caused by initiating event. Furthermore, a sensitivity based approach is adopted to determine the optimal location of UPFC. The effectiveness of the proposed method has been tested on IEEE RTS-79 system.
Publisher
Trans Tech Publications, Ltd.
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