The paper introduced the hazard of large turbine generator operation under abnormal frequency and technical requirements and criteria for low frequency protection.
介绍了大型汽轮发电机组频率异常运行的危害和对低频保护的技术要求及准则；
Specially, generator protection, under-voltage protection and frequency protection are introduced in this paper.
文中特别介绍了发电机保护和低频低压解列技术的应用。
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