双回线故障特征及其选相方式的研究  

Research on interline fault features on parallel lines and fault phase selection mode

作　　者：张海[1] 黄少锋[1] 郝晓辉[2] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,北京102206 [2]石家庄供电公司,河北石家庄050000

出　　处：《华北电力大学学报（自然科学版）》2013年第2期24-29,40,共7页Journal of North China Electric Power University：Natural Science Edition

摘　　要：双回线故障种类繁多,故障特征复杂,容易造成保护选相错误。利用六序分量分析法,对故障下同杆双回线的各序阻抗、电流、电压等电气量进行了特征分析,并研究了这些电气量在保护测量处的特征。根据故障特征分析的结果,分析了利用不同测量处电气信息的选相方式的数据冗余度、选相范围、现场应用等方面特点。最后综合对比了各种选相方式,指出了各自的优缺点及其应用前景。There are various fault types on parallel lines, of which fault features are complex, so it＇ s easy to make the rely protection incorrectly identify fault phases. Using six-sequence component analytical method, the electric quan- tities＇ features of parallel lines such as sequence impedances, sequence circuits and sequence voltages have been ana- lyzed, and the electric quantities＇ features on measuring point also have been researched. Considering the feature anal- ysis results, the aspects such as data redundancy, fault-phase-selection range and application of different phase selec- tion modes, which use electric data of different measuring points, have been analyzed. Finally, by means of compre- hensive and comparative analysis, the advantages and disadvantages of different phase selection modes as well as their applications have been pointed out.

关 键 词：同杆双回线 跨线故障 故障分析 六序分量 故障选相 

分 类 号：TM733[电气工程—电力系统及自动化]