| 发电机转子灭磁与过压保护装置的改进 |
| |
| 引用本文： | 杜久强,段振国.发电机转子灭磁与过压保护装置的改进[J].电力自动化设备,2009,29(6). |
| |
| 作者姓名： | 杜久强 段振国 |
| |
| 作者单位： | 1. 广东阳江市大河水力发电有限公司,广东,阳春,529600
2. 中国水利水电科学研究院,北京,100038 |
| |
| 摘 要： | 介绍了某水电厂发电机组灭磁及过电压保护装置的设计原理:正常停机时不跳灭磁开关.利用晶闸管灭磁;事故情况下跳开灭磁开关,其常闭辅助接点接通,将转子能量主要消耗在电阻上.但在实际运行中会遇到灭磁开关触头烧毁,限压二极管损坏等问题.通过理论分析并进行了2次技术性改进:一次是利用非线性电阻及二极管的特性形成续流分流,但效果并不理想:第2次是采用高能氧化锌压敏电阻及DM4双断口灭磁开关,最终达到了灭磁及过电压保护装置快速可靠的效果.
|
| 关 键 词： | 发电机组 灭磁 过压保护 氧化锌阀片 改进 |
Improvement of rotor demagnetization and overvoltage protection |
| |
| DU Jiuqiang,DUAN Zhenguo.Improvement of rotor demagnetization and overvoltage protection[J].Electric Power Automation Equipment,2009,29(6). |
| |
| Authors: | DU Jiuqiang DUAN Zhenguo |
| |
| Affiliation: | 1. Guangdong Dahe Hydropower Plant;Yangchun 529600;China;2. China Institute of Water Resources and Hydropower Research;Beijing 100038;China |
| |
| Abstract: | The design principle of demagnetization and overvoltage protection for hydropower plant generator set is introduced:the demagnetization switch is not tripped during normal shutdown while the thyristor is used for rotor demagnetization;the demagnetization switch is tripped during incidents while the energy of rotor is consumed on a resistor via its normal - close contactor. But in practical operation,the demagnetization switch and the voltage-limiting diode are burned sometimes. Based on the theoretical anal... |
| |
| Keywords: | generator set demagnetization overvoltage protection zinc oxide valve improvement |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《电力自动化设备》浏览原始摘要信息 |
|
点击此处可从《电力自动化设备》下载全文 |
|
