| 相邻线路零序互感对平行双回线电流平衡保护的影响及改进措施 |
| |
| 引用本文： | 康小宁,梁振锋,索南加乐.相邻线路零序互感对平行双回线电流平衡保护的影响及改进措施[J].电力系统保护与控制,2005,33(20):6-9. |
| |
| 作者姓名： | 康小宁 梁振锋 索南加乐 |
| |
| 作者单位： | 1.西安交通大学电气工程学院，陕西 西安 710049;2.西安理工大学水利水电学院，陕西 西安 710048 |
| |
| 摘 要： | 架设在同一出线走廊的平行双回线及相邻线路之间存在零序互感,产生零序感应电压,平行双回线会产生零序循环电流,在相邻线路发生接地故障时该电流会造成电流平衡保护误动。该文利用六序故障分量法对平行双回线的零序循环电流进行了分析,用零序电流对电流平衡保护的起动判据作了改进。ATP仿真表明,改进后的起动判据在内外部故障时均可以正确动作。
|
| 关 键 词： | 多回线 电流平衡保护 零序互感 |
| 文章编号： | 1003-4897(2005)20-0001-04 |
| 收稿时间： | 2005-01-24 |
| 修稿时间： | 2005-04-12 |
Influence of zero-sequence mutual inductance to transverse differential current protection and approaches to the improved measures |
| |
| KANG Xiao-ning, LIANG Zhen-feng , SUONAN Jia-le.Influence of zero-sequence mutual inductance to transverse differential current protection and approaches to the improved measures[J].Power System Protection and Control,2005,33(20):6-9. |
| |
| Authors: | KANG Xiao-ning LIANG Zhen-feng SUONAN Jia-le |
| |
| Abstract: | Zero-sequence mutual inductance of parallel multi-loop transmission lines may result in induced voltage and circulating current on double-circuit transmission lines. The maloperation of transverse differential current protection will be caused by the circulating current when each fault occurs in parallel lines. The circulating current is analyzed and the countermeasure for the maloperation is proposed by zero-sequence current compensation. The digital simulation verifies the validity. |
| |
| Keywords: | multi-loop transmission line transverse differential current protection zero-sequence mutual inductance |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《电力系统保护与控制》浏览原始摘要信息 |
|
点击此处可从《电力系统保护与控制》下载全文 |
