非线性负荷接入高压-超高压系统评估方法对比  

Comparison of Assessment Methods for the Connection of Nonlinear Loads to HV-EHV Power Systems

作　　者：于希娟 李洪涛 马喜欢 陶顺[2] 马宁 宋晓庆 徐永海[2] YU Xijuan;LI Hongtao;MA Xihuan;TAO Shun;MA Ning;SONG Xiaoqing;XU Yonghai(State Grid Beijing Electric Power Research Institute,Beijing 100075,China;School of Electrical and Electronic Engineering,North China Electrical Power University,Beijing 102206,China)

机构地区：[1]国网北京市电力公司电力科学研究院,北京100075 [2]华北电力大学电气与电子工程学院,北京102206

出　　处：《中国电力》2021年第12期54-62,共9页Electric Power

基　　金：国家自然科学基金面上项目(风电系统时变间谐波的解析建模与并网交互影响及危险区域研究,51777066);国网北京市电力公司科技项目(52022319004L)。

摘　　要：随着电力系统"双高化"的发展,非线性负荷或设备的容量越来越大,它们接入高压-超高压系统的需求越来越高。非线性负荷接入电网会向电网中注入谐波电流,造成电压波形畸变。为了评估非线性负荷的接入是否会对系统造成不可接受的电压谐波失真,国际电工委员会(IEC)制定的IEC/TR 61000-3-6:2008技术性文件和英国2020年颁布的G5/5工程导则给出了相应的评估方法。介绍了2个标准中非线性负荷接入高压-超高压系统的评估方法并进行对比分析,为电能质量谐波国标修订提供不同的视角和思考。With the"double-high"development of power systems,the capacity of nonlinear loads or equipment is becoming increasingly larger,and the demand for their connection to the HV-EHV power systems is getting increasingly higher.However,the connection of the nonlinear loads will inject harmonic currents into the power systems,causing voltage waveform distortion.In order to assess whether the connection of nonlinear loads to power systems will cause unacceptable harmonic voltage distortion,the IEC/TR 61000-3-6:2008 technical standard and the UK G5/5 Engineering Guidelines in 2020 have provided corresponding assessment methods.This paper firstly introduces the assessment methods for the connection of nonlinear loads to HV-EHV power systems provided in these two standards,and then makes a comparative analysis,which can provide a different vision and idea for the revision of the national standards on harmonics.

关 键 词：非线性负荷 高压-超高压系统 波形畸变 IEC G5/5 接入评估 

分 类 号：TM711[电气工程—电力系统及自动化]