300MW发电机欠励限制器与失磁保护的整定与配合

Setting and coordination between th e low-excitation limited device and the lose-magnet protection on the 300MW turbo-generator

叙述了300MW机组发电机欠励限制器与发电机UL-P型失磁保护基本原理与各自整定原则。结合1#发电机失磁保护误动的经验,通过正确的整定与配合达到使机组能够尽最大可能吸收无功,又能够在机组失磁或低励时UL-P型失磁保护快速正确动作,从而保证系统无功的优化,同时对系统电压调整起到积极作用。

s:Briefly analyses the basic principl es and setting of the low-excitation limited device and the lose magnet protection on the 300MWturbo-gene unit.Through the analyses about the false action of the lose magnet protection on the No.1generator,a n ew and more reasonable setting mode i s introduced.