地铁供电系统APF谐波抑制研究  

Harmonic Suppression of Active Power Filter in Metro Power Supply System

作　　者：宋平岗[1] 陈欢[1] 章伟[1] 游小辉 罗剑[1] 周振邦[1] 

机构地区：[1]华东交通大学电气与自动化工程学院,江西南昌330013

出　　处：《华东交通大学学报》2016年第4期122-129,共8页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(51367008)

摘　　要：随着电力电子变频器装置以及各种非线性负载的大量使用,地铁供电系统的谐波也随之增多。地铁牵引变电所采用24脉波整流机组进行整流极大地降低了牵引供电系统的低次谐波。但这主动式谐波治理方案并不能有效减少地铁低压供配电系统谐波含量。为进一步减少供电系统的谐波,提出在降压变电所0.4 k V侧安装有源电力滤波器(active power filter,APF)以对低压侧谐波进行有效治理。阐述了24脉波整流机组以及APF的工作原理;在基于瞬时无功功率理论的ip-iq法的基础上引入平均电流控制器和PI调节器替代低通滤波器,提出一种改进型的谐波电流检测方法并在此基础上对APF的控制策略进行分析;最后在Matlab/Simulink平台构建仿真模型进行验证,仿真结果表明所提出的基于谐波电流检测算法改进型的地铁供电系统APF对谐波抑制的有效性。The harmonic of metro power supply system increases as the power electronic converter device and a large variety of nonlinear loads have been used widely. The step-down substation adopts 24 pulse rectifier to reduce the low order harmonics of the traction power supply system greatly, but this active harmonic control measure can not reduce the harmonic content of low voltage for power distribution system in metro effectively. In order to reduce the harmonic content of power supply system further, active power filter（APF） is proposed to suppress the harmonic at the 0.4k V side of the substation. This paper expounds the working principle of 24 pulse rectifier and APF. An improved harmonic current detection method based on the ip-iq algorithm of the instantaneous power theory is proposed by introducing average current controller and a PI regulator to replace low pass filter. Then the relevant control strategy of APF is analyzed on the basis of the theory. Finally the simulation is built in the MATLAB/Simulink framework, and the simulation results show the improved harmonic current detection method APF is effective for the harmonic suppression in metro power supply system.

关 键 词：供电系统 24脉波整流机组 有源电力滤波器 瞬时无功功率理论 谐波补偿 

分 类 号：TM922[电气工程—电力电子与电力传动]