摘要
阐述了水轮发电机组电气制动的原理,指出制动对发电机保护的影响。通过描述工程实例电气制动过程发电机保护出现的问题,分析了电气制动对发电机保护的影响,结果显示电气制动过程中发电机完全纵差、发电机负序过流保护、20Hz注入式定子接地保护、起停机保护会动作,影响电气制动进程,应予以闭锁,最后给出了保护定值设定中应对措施。
This paper describes the electric brake principle of hydro-generator. It points out the impact of generator protection by the braking. Through describing the problem of generator protection by the electric braking in engineering example, analyze the impact of generator protection by the electric braking. The result shows some protections will act in the process of electric braking and influence the progress of electric braking.Finally it gives out the announcements of the setting values of relay protection.
出处
《电气技术》
2014年第11期37-42,共6页
Electrical Engineering
关键词
电气制动
发电机保护
保护闭锁
electric braking
generator protection
protection blocking
