同步电机励磁系统用TV断线识别方法设计  

Design of TV Disconnection Identification Method for Synchronous Motor Excitation System

作　　者：周吉琦 姚宇飞 ZHOU Jiqi;YAO Yufei(NR Electric Co.Ltd.,Nanjing 211106,China)

机构地区：[1]南京南瑞继保电气有限公司,江苏省南京市211106

出　　处：《水电与抽水蓄能》2024年第5期62-65,共4页Hydropower and Pumped Storage

摘　　要：本文介绍了适用于同步电机励磁系统的定子TV和系统TV断线或异常的几种快速判断方法,通过双TV实时比较、电压负序分量判断及通过机端电压与励磁电流、定子电流的电气关系这三种方法综合判断定子TV断线,通过机端电压与系统电压的电气关系判断系统TV断线,上述方法能够准确、有效判断不同类型的TV断线或异常情况,同时该方法也适用于TV高压侧熔丝慢速熔断情况,有效保证了励磁系统以电压反馈调节的安全性。This article introduces several fast judgment methods for stator TV and system TV disconnection or abnormality applicable to synchronous motor excitation systems.Through real-time comparison of dual TVs,voltage negative sequence component judgment,and the comprehensive judgment of stator TV disconnection through the electrical relationship between machine terminal voltage,excitation current,and stator current,the system TV disconnection is determined through the electrical relationship between machine terminal voltage and system voltage.The above methods can accurately This method effectively identifies different types of TV disconnection or abnormal situations,and is also suitable for slow melting of TV high-voltage side fuses,effectively ensuring the safety of excitation system regulation through voltage feedback.

关 键 词：同步电机 励磁系统 TV断线 TV慢熔 

分 类 号：TM77[电气工程—电力系统及自动化]