某大型水电站灭磁回路及控制技术分析  

On the De-excitation Circuit and Control Technology in a Large-scale Hydropower Station

作　　者：罗远旺 郭文峰 罗泽文 张铁平 LUO Yuanwang;GUO Wenfeng;LUO Zewen;ZHANG Tieping(Baihetan Hydropower Plant, China Yangtze Power Co., Ltd., 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：《水电与新能源》2021年第6期26-30,共5页Hydropower and New Energy

摘　　要：某全球单机容量最大的水电站对灭磁回路设计与传统灭磁回路相比,增加了辅助逆变器的新技术应用,同时对跨接器回路进行了改进,采用多重冗余触发电路电子跨接器,其设计优势,一是辅助逆变器的应用使得励磁系统进行事故灭磁时,逆变工作状态不再依赖励磁调节器,提升了灭磁的可靠性;二是电子跨接器回路多重冗余配置极大地提升了灭磁电阻投入的可靠性。In a large-scale hydropower station with the largest unit capacity in the world,new technologies are adopted in the de-excitation circuit and its control.Compared with the traditional de-excitation circuit,auxiliary inverter is added and the jumper circuit is improved with multiple redundant trigger circuit electronic jumper.With the addition of the auxiliary inverter,the working state of the inverter is no longer dependent on the excitation regulator when the de-excitation system is experiencing accidental de-excitation,which improves the reliability of the de-excitation process.Also,the multiple redundant configuration of the electronic jumper circuit greatly improves the service reliability of the de-excitation resistors.

关 键 词：励磁系统 灭磁 辅助逆变器 电子跨接器 

分 类 号：TM31[电气工程—电机]