摘要
发电机发生单相接地故障时,定子绕组的基波零序电压、机端和中性点三次谐波电压的比值和相位差会发生较大变化。取它们为特征量,提出发电机定子接地保护的模糊综合判据,比传统保护更可靠。
In consideration of following appearance that during monophase grounding failure of the generator the basic wave’s zero-order voltage of stator winding,the ratio and phase difference between third-order harmonic waves at the end block and the neutral point are changing evidently.They have been taken as characters to propose the comprehensive criterion of generator stator grounding protection.It’s more reliable than a traditional one.
出处
《煤矿机电》
2010年第4期7-9,共3页
Colliery Mechanical & Electrical Technology
关键词
定子接地
模糊识别
模糊综合评判
遗传算法
stator grounding
fuzzy identification
fuzzy comprehensive judgment
genetic algorithm
