| 基于绝缘在线监测原理的矿井低压电网漏电保护选线方法研究 |
| |
| 引用本文： | 姚珏菂,苏珂嘉,孟庆勇,陈伟. 基于绝缘在线监测原理的矿井低压电网漏电保护选线方法研究[J]. 国外电子元器件, 2014, 0(2): 56-59 |
| |
| 作者姓名： | 姚珏菂 苏珂嘉 孟庆勇 陈伟 |
| |
| 作者单位： | 煤炭科学研究总院北京100013 |
| |
| 基金项目： | 中国煤炭科工集团有限公司科技创新基金项目（2011MS004） |
| |
| 摘 要： | 分析了煤矿井下供电系统漏电故障模型及系统各条支路零序电流的逻辑关系,阐述了以此逻辑关系为基础,结合低频信号附加法,进而提出基于绝缘在线检测原理的漏电保护选线方法。该漏电故障选线方法对于各种结构和规模的供电系统具有较强适应性,特别是能够有效解决小规模供电系统中选择性漏电保护灵敏度低、可靠性差的技术难题。仿真结果表明此漏电选线保护方法能够有效进行漏电故障选线判断。
|
| 关 键 词： | 电力系统 零序电流 选线方法 漏电保护 在线监测 |
Research of low-voltage power grid leakage protection line selection method in mine based on the principle of online insulation monitoring |
| |
| YAO Jue-di,SU Ke-jia,MENG Qing-yong,CHEN Wei. Research of low-voltage power grid leakage protection line selection method in mine based on the principle of online insulation monitoring[J]. International Electronic Elements, 2014, 0(2): 56-59 |
| |
| Authors: | YAO Jue-di SU Ke-jia MENG Qing-yong CHEN Wei |
| |
| Affiliation: | (China Coal Research Institute ,Beijing 100013, China) |
| |
| Abstract: | Analysised leakage model of power system in mine and logic relationship of the zero-sequence current in each branch. Elaborated basing on this logical relationship, combining with low-frequency signals additional method, and then proposed leakage protection line selection method based on insulation online detection principle. This leakage fault line selection method has adaptability of various structure and sizes of the power supply system, especially could effectively solve technical problems of the small-scale low sensitivity and poor reliability in the power supply system. The simulation results showed that this leakage line selection protection method can effectively judge leakage fault line in power system. |
| |
| Keywords: | power system zero sequence current line selection method leakage protection online monitoring |
| 本文献已被 CNKI 维普 等数据库收录！ |
