110kV甘祥变电站谐波超标分析及治理方案研究  

Analysis and Treatment of Over-standard Harmonic in 110kV Ganxiang Substation

作　　者：金庆忍[1] 楚红波[1] 李耀祖 刘光时[1] 

机构地区：[1]广西电网公司电力科学研究院,南宁530023 [2]广西电网公司百色供电局,广西百色533000

出　　处：《广西电力》2013年第4期42-46,共5页Guangxi Electric Power

摘　　要：广西电网电能质量智能监测分析系统监测数据显示,110 kV甘祥变电站谐波超标问题严重。利用PQView平台全面分析了110 kV甘祥变电站主变压器三侧母线谐波电压和35 kV母线主要出线负荷的谐波电流超标情况。通过与现场专项测试数据对比,结合谐波功率流向找出了造成该站谐波超标的原因。提出了在35kVI母上安装5、7、11次3个单调谐滤波器的治理方法。通过ETAP软件仿真验证,滤波器滤波效果较为明显,35kVI母上各次谐波电压含有率及总谐波畸变率均降至国标限值范围内,达到了谐波治理的目的,为下一步该站的谐波治理工作提供了理论依据。Monitoring data from power quality intelligent monitoring and analysis system in Guangxi grid show that there is serious over-standard harmonic problem in 110 kV Ganxiang substation. The over-standard problem of bus harmonic voltage at three sides of the transformer and harmonic current main feeders from 35 kV bus in 110 kV Ganxiang substation are analyzed by using the PQ View platform. By comparing with the special field test data and the direction of the harmonic power flow, reasons of harmonic excess are found. The treatment method are proposed which is that three single tuned filter （5,7 and 11 times） should be installed on 35kV No.I bus. ETAP simulation result shows that the filter has obvious effect, and all harmonic voltage content and THD of 35 kV No.I bus are reduced within the limit range, which achieves the purpose of the harmonic treatment, and provides a theoretical reference for the harmonic treatment in the substation.

关 键 词：PQ VIEW 谐波分析 畸变率 谐波治理 

分 类 号：TM933.4[电气工程—电力电子与电力传动]