基于V/V接线变压器的铁路功率调节器容量配置和能量优化补偿策略

Capacity configuration of V / V transformer-based railway power conditioner and optimal energy compensation strategy

针对高速铁路牵引供电系统的谐波、负序问题,提出一种采用铁路功率调节器(RPC)补偿装置的能量优化补偿策略。研究了优化补偿情况下RPC装置谐波和负序电流补偿量的检测方法。针对RPC的补偿能量,对RPC进行最优稳态功率分析,提出了3个补偿指标:有功补偿度γ、无功补偿角度φ、谐波补偿度ψ。采用粒子群优化(PSO)算法计算RPC最小补偿能量下所需的γ、φ和ψ,通过对γ、φ、ψ的控制实现RPC的最优能量控制。采用能量优化补偿方法对RPC进行容量配置,并针对补偿的实时性要求,提出了一种工程应用方法。仿真结果表明,所提出的能量优化补偿策略可以减小RPC的补偿容量,提高了补偿装置的经济性。

Aiming at the harmonic current and negative sequence current of high-speed railway traction power supply system,an optimal energy compensation strategy based on RPC（Railway static Power Conditioner） is proposed and the detection method of harmonic and negative sequence currents in optimal compensation condition is discussed. The optimal steady-state power of RPC is analyzed according to its compensating energy and three performance indexes are proposed：active power compensating degree（γ）,reactive power compensating angle （φ） and harmonic current compensating degree （ψ）. PS0 （Particle Swarm Optimization） algorithm is used to calculate these three indexes for the minimum compensating energy. The optimal energy compensation is realized by controlling three indexes. The capacity of RPC is configured by the optimal energy compensation strategy. An application to real time compensation is proposed. Simulative results show that the RPC capacity is reduced due to the optimal energy compensation strategy.