| 输电线路单端暂态量保护在全数字变电站中的应用 |
| |
| 引用本文： | 李丽平,何雷. 输电线路单端暂态量保护在全数字变电站中的应用[J]. 华北电力大学学报(自然科学版), 2008, 35(3): 44-47 |
| |
| 作者姓名： | 李丽平 何雷 |
| |
| 作者单位： | 河北软件职业技术学院,软件工程系,河北,保定,071000;保定学院,物理系,河北,保定,071000 |
| |
| 摘 要： | 根据超高压线路发生区内、外故障时的暂态电流行波中高频分量的含量的差异,利用多分辨形态梯度来检测、放大这一差异,构成了一种全数字变电站中利用单端故障暂态电流的超高速保护新原理。仿真试验证明:该原理能在线路发生不同位置、不同过渡电阻、不同初始角等情况下的故障时准确、快速地放大并提取这种差异。
|
| 关 键 词： | 线路保护 暂态电流 多分辨形态梯度 数学形态学 |
| 文章编号： | 1007-2691(2008)03-0044-04 |
| 修稿时间： | 2007-12-05 |
Application of transmission line non-unit transient protection in digital substation |
| |
| LI Li-ping,HE Lei. Application of transmission line non-unit transient protection in digital substation[J]. Journal of North China Electric Power University, 2008, 35(3): 44-47 |
| |
| Authors: | LI Li-ping HE Lei |
| |
| Abstract: | Based on the difference of high frequency component in transient current of internal and external fault occurred in UHV transmission line,this paper presented a new ultra high speed protection principle,which checking and magnifying the difference by means of multi-resolution morphological gradient in digital substation.Simulation results show that the proposed principle can correctly and rapidly identify the faulty phase under the condition that various faults occur at different positions of transmission line,transition resistance and original angle. |
| |
| Keywords: | transmission line protection transient current multi-resolution morphological gradient mathematical morphology |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
