单频法绝缘监测原理与仿真分析  

Research of Injecting Single-frequency Signal in Insulation Monitoring System

作　　者：王勇[1] 张哲[1] 尹项根[1] 柳虎[1] 贾文超[1] 吴娟娟[1] 

机构地区：[1]华中科技大学,电力安全与高效湖北省重点实验室,武汉430074

出　　处：《船电技术》2007年第5期277-281,共5页Marine Electric & Electronic Engineering

摘　　要：中性点不接地是船舶电网普遍采用的工作方式,对电网的绝缘状态进行在线监测,有利于及时发现故障隐患,快速准确地判断故障线路,对提高电网的运行安全和供电可靠性具有重大意义。国内外对此进行了广泛而深入的研究,并取得了大量成果。本文针对船舶电网的运行特性,提出了基于注入单频信号的绝缘监测新方法,并进行了仿真分析,证实了其可行性。A method with non-grounded neutral point is widely used in the power system of ship. We can quickly find out the fault line via the online insulation monitoring system, and it＇s important to improve the security of performance and reliability of supply of power system. Both domestic and foreign scholars have studied the online insulation monitoring system, and have made many substantial achievements. By analyzing the behavior of the power system of ship, a new method based on injecting single-frequency signal is presented, and the simulation analysis confirmed its feasibility.

关 键 词：单相接地故障 单频信号注入法 灵敏性 可靠性 

分 类 号：TM855[电气工程—高电压与绝缘技术]