牵引供电系统无功谐波电流检测方法的分析

研究了3种适用于牵引供电系统无功谐波电流的检测方法,包括基于瞬时无功理论的无功谐波电流检测方法、基于函数正交特性和基于有功电流分离方法的无功谐波电流检测方法.给出了相应的检测原理及系统框图,参考西南交通大学电气工程学院研发的BDC-5型牵引变电站电能质量监测系统测试的昭通变电所电能质量数据构造负载进行建模仿真,第2种和第3种方法具有较高精度和较好的实时性,在电气化铁道供电系统中推荐使用.

Analysis of Detecting Methods of Reactive Power and Harmonic Current in Traction Power Supply System

In order to detect the reactive power current and harmonic current in electrified railway systems,three detecting methods are proposed in this paper.There are methods based on instantaneous reactive power theory,methods based on function orthogonal characteristic and active current separate method.The corresponding detection systems are developed,and simulations based on power quality data of Zhaotong traction which detected by BDC-5 traction substation power quality detecting system are performed which ver...