本文主要介绍在工业控制电网中由非线性负载所造成的谐波电流畸变问题所采用的4种技术,给出了相应的检测系统框图,做了电力系统电能质量监测系统测试的数据进行建模仿真实验,这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.%In order to delect the harmonic current from some nonlinear toad of industry control in power net syslems,four detecting methods are proposed in this paper. There are the better practical effect and economy. The corresponding detection systems are developed, and simulations based on power quality data of traction bstation power quality detecting system are performed which verify the feasibility of the methods proposed. With higher precision and the real-time performance, two methods are recommended in electrified railway systems.
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