铁路功率调节器指令信号提取的研究与改进  

The Research and Improvement of the Signal Extraction for Railway Static Power Conditioner

作　　者：江友华 王文吉 赵乐 曹以龙 JIANG You-hua;WANG Wen-ji;ZHAO Le;CAO Yi-long(Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力大学电子与信息工程学院,上海200090 [2]上海市电力公司电力研究院,上海200437

出　　处：《电力电子技术》2019年第3期59-63,共5页Power Electronics

基　　金：上海市地方能力建设项目(14110500900)~~

摘　　要：铁路功率调节器(RPC)能有效克服传统治理装置对负序和谐波补偿效果不佳的缺点,为治理高速铁路的电能质量提供新的思路。其中低通滤波器(LPF)和锁相环在RPC补偿信号的提取中发挥着关键的作用。传统的LPF不能完全适用于电气化铁路PRC所处单相供电、负序严重的供电环境。为此,对电网锁相的LPF技术及解耦策略进行了研究,并对离散域下谐振锁相环、降阶谐振锁相环的性能进行了分析。同时,提出一种串联式结构的LPF,能够有效提高有功、无功指令信号的提取速度与质量。最后通过仿真和实验验证了此处所提理论的可行性。Railway static power conditioner (RPC) can effectively overcome the shortcomings of traditional control devices for negative sequence and harmonic compensation, and can solve the problem of power quality of high-speed railways.The low-pass filter (LPF) and phase-locked loop play a major role in the extraction and performance of the compensation signal of the railway power conditioner.The traditional LPF cannot be fully applied to single-phase power supply and severe negative sequence power supply environment of the electrified railway power conditioner.Therefore, studies the phase -locked LPF technology and decoupling strategy of the power grid, and analyzes the performance of the resonant phase -locked loop and the reduced-order resonant phase-locked loop in the discrete domain.At the same time, a seriesstructured LPF is proposed, which can effectively improve the extraction speed and quality of active and reactive power command signals.Finally, the feasibility of the proposed theory is verified by simulation and experiments.

关 键 词：铁路功率调节器 低通滤波器 锁相环 

分 类 号：TH861[机械工程—仪器科学与技术]