500kV固定式直流融冰装置的静止无功补偿器重构方案  

Static Var Compensator Reconstruction Scheme of 500 kV Fixed DC De-icing Device

作　　者：薛英林[1] 徐政[1] 傅闯 黎小林 

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]南方电网科学研究院,广州510080

出　　处：《高电压技术》2011年第12期3135-3142,共8页High Voltage Engineering

基　　金：国家"十一五"科技支撑计划重大项目(2009BAA23B02)~~

摘　　要：针对在线路没有覆冰期间设备利用率低和经济性能差的问题,固定式直流融冰装置通常通过主接线重构用于静止无功补偿装置运行。根据晶闸管阀组的拓扑形式重构方案可分为两种基本类型,即可控整流型和可控电抗器型。为提高重构方案的运行效益,注重缩合成本和运行安全,通过理论分析和仿真验证,从阀的电压应力、阀损耗和谐波等对设备选型和运行安全有重要影响的若干方面,来详细探讨了两种方案的优缺点。结果表明尽管前者在模式切换具有简单易行等优点,但运行时电压应力、阀损耗和谐波均大于后者可能导致其综合运行效益降低。In view of the low utilization rate of equipment and poor economic performance,when the transmission lines are not trapped by ice,fixed DC de-icing devices would be typically used as static var compensators though reconstruction of main connections.According to the topological form of thyristor valve,the reconstruction schemes can be divided into two basic types,controlled rectifier type and thyristor controlled reactor type.Firstly,we described topologies and basic principles of two schemes;then,we analyzed the advantages and disadvantages of two schemes through theoretical analysis and simulation from such aspects as the valve voltage stress,valve loss and harmonics etc that have a major impact on equipment selection and operation safety.The results show that although the former has advantages of simplicity mode switch,greater stress,more loss and higher harmonic may make it poorer operating efficiency than the latter.

关 键 词：直流融冰 动态无功补偿 电压应力 阀损耗 谐波 运行 

分 类 号：TM761.1[电气工程—电力系统及自动化]