| 基于小波理论的变压器励磁涌流和短路电流的判定 |
| |
| 引用本文： | 孙玲. 基于小波理论的变压器励磁涌流和短路电流的判定[J]. 可编程控制器与工厂自动化(PLC FA), 2006, 0(2): 92-93,76 |
| |
| 作者姓名： | 孙玲 |
| |
| 作者单位： | 武汉理工大学自动化学院 |
| |
| 摘 要： | 本文提出了一种基于小波理论的区分励磁涌流和短路电流的新原理。利用小波理论进行涌流特征提取，通过小波变换的模局部极大值的特性提取励磁涌流的间断角特征，在此基础上定性地区分励磁涌流和短路电流。
|
| 关 键 词： | 励磁涌流 变压器微机保护 小波理论 |
| 文章编号： | 1606-5123（2006）02-0092-03 |
The Discrimination Between Inrush Current and Fault Current of Trans former Based on Wavelet |
| |
| Sun Ling. The Discrimination Between Inrush Current and Fault Current of Trans former Based on Wavelet[J]. Programmable controller & Factory Automation(PLC & FA), 2006, 0(2): 92-93,76 |
| |
| Authors: | Sun Ling |
| |
| Abstract: | A principle of discriminating the inrush current and fault current of the power transformers based on the Wavelet is presented in the paper. The dead angle is a dominant and essential characteristic of the inrush current. This feature is extracted from the local maxima of the wavelet transforms and described with fuzzy sets. |
| |
| Keywords: | Inrush current Digital transformer protection Wavelet transform |
| 本文献已被 CNKI 维普 等数据库收录！ |
