欠励限制与失磁保护配合校验方法的研究  

Research on Coordination Verification Method of Underexcitation Limitation and Loss of Magnetic Protection

作　　者：张红栋 ZHANG Hongdong(National Energy Group Jiaozuo Power Plant Co.,Ltd.,Jiaozuo 454000,China)

机构地区：[1]国家能源集团焦作电厂有限公司,河南焦作454000

出　　处：《电工技术》2020年第15期74-76,共3页Electric Engineering

摘　　要：励磁调节器欠励限制需与发电机失磁保护相配合,但发电机失磁保护在阻抗坐标系中,励磁调节器欠励限制在PQ坐标系中,校验两者配合关系的计算复杂,对此给出了校验两者配合关系的详细计算过程,为发电厂继电保护专业提供了一种校验两者配合关系的方法。Excitation regulator under-excitation limitation needs to be matched with generator demagnetization protection.However,the generator demagnetization protection is in the impedance coordinate system,and the under-excitation of the excitation regulator is limited in the PQ coordinate system.In this paper,the detailed calculation process of checking the coordination relationship between the two was given,which provided a method to check the coordination relationship between the two for the relay protection specialty of power plant.

关 键 词：失磁保护 欠励限制 失磁阻抗圆 PQ曲线 

分 类 号：TM31[电气工程—电机]