UNITROL 5000型自动励磁调节器检测PT断线的方案探析  

Scheme Discussion and Analysis about UNITROL 5000 Type Automatic Excitation Regulator for Detecting PT Disconnection

作　　者：徐维利 XU Weili(Chongqing Power Plant,Shenhua Guoneng Group Co.,Ltd,Chongqing,400053)

机构地区：[1]神华国能集团有限公司重庆发电厂,重庆400053

出　　处：《神华科技》2017年第5期41-44,共4页Shenhua Science and Technology

摘　　要：为预防发电机机端PT一次侧熔断器慢熔断引发误强励事故发生,本文针对选用ABB公司UNITROL 5000型自动励磁调节器的大型汽轮发电机组,提出了实用可行的3种方案。通过3种方案的比选,推荐了PT断线判别功能相对完善的方案,进一步提高自动励磁调节器的安全可靠性。In order to prevent occurrence of error forced excitation caused by slow fusing of PT one-timeside fuse in the generator terminal,this paper puts forward to three practical and reliable schemes for the selection of large-scale turbine generator of UNITROL5000type automatic excitation regulator in ABB company.Through comparison of three schemes,a relatively perfect scheme of judging function of PT disconnection isrecommended,which further improve the safety and reliability of the automatic excitation regulator.

关 键 词：自动励磁调节器 PT断线 判别逻辑误强励 

分 类 号：TM761.11[电气工程—电力系统及自动化]