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JPE, Vol. 19, No. 5, September 2019
Power Quality Optimal Control of Railway Static Power Conditioners Based on Electric Railway Power Supply Systems
Youhua Jiang, Wenji Wang, Xiangwei Jiang, Le Zhao, and Yilong Cao
Area Power Quality and Utility Application
Abstract Aiming at the negative sequence and harmonic problems in the operation of railway static power conditioners, an optimization compensation strategy for negative sequence and harmonics is studied in this paper. First, the hybrid RPC topology and compensation principle are analyzed to obtain different compensation zone states and current capacities. Second, in order to optimize the RPC capacity configuration, the minimum RPC compensation capacity is calculated according to constraint conditions, and the optimal compensation coefficient and compensation angle are obtained. In addition, the voltage unbalance EU and power factor requirements are satisfied. A PSO (Particle Swarm Optimization) algorithm is used to calculate the three indexes for minimum compensating energy. The proposed method can precisely calculate the optimal compensation capacity in real time. Finally, MATLAB simulations and an experimental platform verify the effectiveness and economics of the proposed algorithm.
Keyword Negative sequence and harmonic,Railway static power conditioner,The minimum RPC compensation capacity
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