Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Power Quality Optimal Control of Railway Static Power Conditioners Based on Electric Railway Power Supply Systems

  • Jiang, Youhua (College of Electronics and Information Engineering, Shanghai University of Electric Power) ;
  • Wang, Wenji (State Grid Wuhan Electric Power Company) ;
  • Jiang, Xiangwei (State Grid Anqing Power Supply Company) ;
  • Zhao, Le (Shanghai Electric Power Research Institute) ;
  • Cao, Yilong (College of Electronics and Information Engineering, Shanghai University of Electric Power)
  • Received : 2018.10.06
  • Accepted : 2019.05.29
  • Published : 2019.09.20
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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 ${\varepsilon}_U$ 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.

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References

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