水轮发电机无弧灭磁装置的研究与应用  

An Arcless Deexcitation Device for Hydro-generators

作　　者：孙晓波 鲍友洪 王丽玲 张敬[1] 蒋冰芝 SUN Xiaobo;BAO Youhong;WANG Liling;ZHANG Jing;JIANG Bingzhi(China Yangtze Power Co.,Ltd.,Baihetan Hydropower Plant,Ningnan 615400,China)

机构地区：[1]中国长江电力股份有限公司白鹤滩水力发电厂,四川宁南615400

出　　处：《电工技术》2024年第5期221-223,共3页Electric Engineering

摘　　要：水轮发电机单机容量的增加对发电机灭磁系统的可靠性提出更高要求。针对灭磁开关与非线性灭磁电阻组成的移能灭磁系统灭磁失败问题,提出一种无弧灭磁装置予以解决,其通过整流桥控制角改变整流桥输出电压瞬时值,从而提高水轮发电机灭磁系统灭磁的可靠性。灭磁时序试验验证了所提装置的有效性和实用性。The increase in single unit capacity of hydroelectric generators puts forward higher requirements for reliability of generator deexcitation system.An arcfree deexcitation device is proposed to address the problem of deexcitation failure in an energy transfer deexcitation system composed of a deexcitation switch and a nonlinear deexcitation resistor.This device changes instantaneous output voltage of the rectifier bridge by adjusting controll angle of the rectifier bridge,thereby improving reliability of synchronous generator deexcitation system.The effectiveness and practicality of the proposed device are verified through the demagnetization timing test.

关 键 词：水轮发电机 灭磁开关 无弧灭磁装置 移能灭磁 

分 类 号：TM312[电气工程—电机]