一种适用于高速电气化铁路的混合型功率调节系统及其容量分析

随着交流电力机车的广泛使用,牵引网负序和过分相问题日益突出,采用配置铁路功率调节器(railway power conditioner,RPC)的同相供电系统是一种可行方案.为了提高该方案中功率调节系统的性价比,本文提出了一种适用于同相供电系统的新型混合铁路功率调节器(hybrid RPC,HRPC).与传统RPC相比,该系统变流器的端口电压更低,从而大幅降低了有源部分的容量.文章详细描述了系统的拓扑结构、补偿原理,给出了关键参数的设计方法,并对HRPC的容量进行了系统分析.研究结果表明,在完成相同补偿任务的前提下,所提HRPC变流系统的容量将比传统RPC降低46%~50%.所得结论通过仿真得到了验证.

A Hybrid Power Conditioner for High-speed Electric Railway and Its Power Capacity Analysis

With wide application of AC drive electric locomotives in railway networks, the negative sequence current and neutral section increase significantly, and the co-phase power supply system with Railway Power Conditioner (RPC) is an effective solution. In order to increase its cost performance, a new Hybrid Railway Power Conditioner(HRPC) for co-phase was proposed. Compared with the traditional RPC, HRPC is much lower than RPC in operation voltage, so its capacity of active part decreases significantly. This paper analyzed its topology, compensation principle and operation voltage of its active part. The design of its key parameter was given. The results prove that HRPC is lower by 46%~50% than that of RPC in completing similar compensational tasks through simulation.