首页 | 本学科首页   官方微博 | 高级检索  
     检索      

故障全量的分相复合阻抗输电线路纵联保护原理
引用本文:索南加乐,夏经德,焦在滨,王莉,何世恩,刘凯.故障全量的分相复合阻抗输电线路纵联保护原理[J].西安交通大学学报,2010,44(2).
作者姓名:索南加乐  夏经德  焦在滨  王莉  何世恩  刘凯
作者单位:西安交通大学电力设备电气绝缘国家重点实验室,710049,西安
基金项目:国家自然科学基金资助项目,高等学校博士学科点专项科研基金资助项目 
摘    要:提出了一种基于故障全量的分相复合阻抗输电线路纵联保护原理,它根据线路两端电压、电流故障全量差的比值引入分相阻抗,并以计算得到的阻抗数值判断故障是否发生在区内.在区外故障时,分相阻抗等于线路全长的正序阻抗;在区内故障时,分相阻抗明显偏离上述正序阻抗.该原理为幅值判据,不仅易于整定、具有自选相功能,而且性能可靠、动作灵敏、适应性强,EMTP数字仿真和动模试验结果验证了其有效性.

关 键 词:输电线路  故障全量  纵联保护

Transmission Line Pilot Protection Principle of Fault Total Content Based on Composite Impedance of Individual Phase
SUONAN Jiale,XIA Jingde,JIAO Zaibin,WANG Li,HE Shien,LIU Kai.Transmission Line Pilot Protection Principle of Fault Total Content Based on Composite Impedance of Individual Phase[J].Journal of Xi'an Jiaotong University,2010,44(2).
Authors:SUONAN Jiale  XIA Jingde  JIAO Zaibin  WANG Li  HE Shien  LIU Kai
Abstract:A transmission line pilot protection principle based on the composite impedance of indi-vidual phase is proposed. The individual phase impedances are calculated from the fault total con-tent differences of the voltages and currents at both terminals of the line, and then used for jud-ging if the fault is occurs at the line. If the fault is outside of the protected area, the individual phase impedances just equal to the positive sequence impedance of whole length of the transmis-sion line, while they will obviously differ from the determined value in case of the fault inside of the protected area, which refers an amplitude criterion. The proposed protection with independent phase selection possesses identity of reliable performance, sensitive operation, and strong adapta-tion. The EMTP simulation and the dynamic simulation test results indicate the effectiveness of the presented principle.
Keywords:transmission line  fault total content  pilot protection
本文献已被 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号