CAJ | 학술논문

零功率保护在大型发电机组中作为汽轮机超速、发电机过电压、锅炉等热力系统的保护,主要利用功率与频率突变量作为特征量,判断零功率状况,出口迅速切换厂用电及停机。由于REG670保护装置不能实现对功率突变量的检测,在对REG670研究后,结合铜陵电厂实际情况,优化相关零功率保护逻辑设计,并简要介绍零功率保护的定值整定情况。
령공솔보호재대형발전궤조중작위기륜궤초속、발전궤과전압、과로등열력계통적보호,주요이용공솔여빈솔돌변량작위특정량,판단령공솔상황,출구신속절환엄용전급정궤。유우REG670보호장치불능실현대공솔돌변량적검측,재대REG670연구후,결합동릉전엄실제정황,우화상관령공솔보호라집설계,병간요개소령공솔보호적정치정정정황。
In a large generator units as steam turbine over speed,generators over voltage,boilers and other heating system protection,zero-power protection mainly uses the power and frequency mutations as characteristic quantities,judging zero-power status,and export quickly switching auxiliary power and generator outage.As REG670 protection devices can not achieve the detection of power mutation amount,after the study of REG670,combined with the actual situation of Tongling Power Plant,some related zero-power protection logic design is optimized,and the value of setting of the zero-power protection is described briefly.