含滤波器的多换流站谐波阻抗模型与谐波交互影响研究  

Research on harmonic impedance model and harmonic interaction of multiple converter station system with AC filters

作　　者：郭春林[1] 徐轩 张琛亮 杨琳[1] 马凯[1] 蒋维勇[3] GUO Chunlin;XU Xuan;ZHANG Chenliang;YANG Lin;MA Kai;JIANG Weiyong(State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;Quzhou Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Quzhou 324000,China;State Grid Economic and Technological Research Institute,Beijing 102209,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]国网浙江省电力有限公司衢州供电公司,浙江衢州324000 [3]国网北京经济技术研究院,北京102209

出　　处：《电力自动化设备》2020年第10期187-193,共7页Electric Power Automation Equipment

基　　金：工业和信息化部绿色制造系统集成项目资助(MIIT2016755)。

摘　　要：当多个换流站位于相邻交流电网时,换流站之间电气距离较小,一些特定的交流滤波器组合投切方式可能会引发换流站之间谐波电流的交互影响。基于谐波阻抗方法定义了换流站谐波电流影响系数,用于计算换流站之间谐波电流的交互影响程度。以银川东站与灵州站构成的多换流站系统为例,搭建含有交流滤波器的谐波阻抗模型,针对特征谐波,计算谐波电流影响系数,分析了交流滤波器组合投切对银川东站、灵州站谐波电流交互作用的影响。结果显示11、13次谐波电流的交互影响较小,23、25次谐波电流的交互影响较大,且特定滤波器的投切会造成各换流站交流母线谐波电流的明显变化。最后,建立PSCAD电磁暂态仿真模型,对上述分析结果进行了验证。When multiple converter stations are located in the adjacent AC networks,the electrical distance between the converter stations is short,and some specific AC filter combination switching methods may cause the harmonic current interaction between converter stations.Based on the harmonic impedance method,the influence coefficient of harmonic current in converter stations is defined,which is used to calculate the interactive influence degree of harmonic current between converter stations.Taking the multiple converter station system composed of Yinchuandong Station and Lingzhou Station as an example,the harmonic impedance model with AC filter is established to calculate the harmonic current influence coefficient of charac⁃teristic harmonics,and the influence of AC filter combination switching on the harmonic current interaction between Yinchuandong Station and Lingzhou Station is analyzed.The result shows that the interaction of 11th and 13th harmonic currents is small while the interaction of 23rd and 25th harmonic currents is rela⁃tively large,and the switching of specific filters will cause significant changes in harmonic current of AC bus in each converter station.Finally,the PSCAD electromagnetic transient simulation model is built to verify the analysis results.

关 键 词：多换流站系统 谐波交互影响 滤波器投切 谐波阻抗 特征谐波 谐波分析 

分 类 号：TM721.1[电气工程—电力系统及自动化]