发电机转子励磁绕组接地保护  

THE EARTH-FAULT PROTECTION FOR GENERATOR ROTOR FIELD COIL

作　　者：郭光荣[1] 

机构地区：[1]重庆电力高等专科学校,重庆市400053

出　　处：《电力系统自动化》2003年第20期73-76,共4页Automation of Electric Power Systems

摘　　要：提出一种新的切换采样原理的励磁回路一点接地和两点接地微机保护。该保护能测定一点接地故障点位置、一点接地过渡电阻、两点接地过渡电阻的大小以及两接地点间的短路电流。根据这些判据构成了完善的励磁回路接地保护。与目前采用的切换采样原理的励磁回路接地保护相比 ,具有灵敏度高。This paper provides a new exciting circuit one or two points earth fault protection based on switchable sampling principle. It can detect the location and transitional resistor of one point earth fault, and the transitional resistor and short current between two earthed points of two points earth fault. According to these criteria, the whole structure of the field coil earth fault protection is proposed. Compared with the conventional protection, the new protection is of high sensitivity and novel and brief algorithm.

关 键 词：切换采样 一点接地保护 两点接地保护 转子励磁绕组 

分 类 号：TM310.7[电气工程—电机]