人民长江2015，Vol.46Issue(23)：46-49,4.DOI:10.16232/j.cnki.1001-4179.2015.23.011
发电机转子一点接地保护系统配置及应用研究
Study on configuration and application of generator rotor one-point grounding protection system
徐亮 1纪可可 1黄文明1
作者信息
- 1. 雅砻江流域水电开发有限公司 二滩水力发电厂,四川 攀枝花617000
- 折叠
摘要
Abstract
Current domestic generator rotor one-point grounding protection devices are mostly based on principles of Wheat-stone bridge, switch sampling ( ping pong) , square wave power injection and DC voltage injection, etc. Drawbacks like large op-erating dead zone, poor protective selection, low sensitivity and inability to display real time rotor insulation variation tendency exist in independently operating protecting device. To overcome these drawbacks, the configuration, application and setting cal-culation of the generator rotor grounding protection system of Tongzilin Hydropower Station are studied. The results show that an appropriately-selected configuration scheme of the generator rotor grounding protection system can effectively and promptly dis-cover the decline tendency of the rotor insulation, sending warning signal, and confirm the warning and trip-out signals through the rotor grounding protection system based on two different principles.关键词
发电机转子/一点接地/接地保护/绝缘监测/桐子林水电站Key words
generator rotor/one-point grounding/grounding protection/insulation monitoring/Tongzilin Hydropower Station分类
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徐亮,纪可可,黄文明..发电机转子一点接地保护系统配置及应用研究[J].人民长江,2015,46(23):46-49,4.
