380V交流发电机组自起动试验时跳机原因分析及对策  

Cause Analysis and Solutions of 380 V AC Generating Set Trip in Self-Starting Test

作　　者：曾其权 张伟 韩雪华 

机构地区：[1]中广核核电运营有限公司,广东深圳518124

出　　处：《低压电器》2013年第22期61-64,共4页Low Voltage Apparatus

摘　　要：针对某核电厂380 V交流发电机组自起动试验时跳机的现象,通过原因查找和试验测试分析,判断柴油机跳机的主要原因是:柴油机下游不间断电源负载投运,向系统反馈大量谐波,导致监视柴油机超速的频率继电器误动并向柴油机发出跳机指令,最终导致柴油机跳机。在此基础上,提供了两种解决方案。According to the 380 V AC generating set tripping phenomenon in the self-starting test of a nuclear power plant, through the analysis of the causes and actual test, it was judged that the trip is mainly due to ： after the uninterruptible power supply load is putted into operation, a large number of harmonic feed back into the system, resulting in that the frequency relay, which is used to monitor the generator over-speed, has malfunctions and sends trip command to the generator, and finally the generator has tripped. On this basis, two solutions were offered.

关 键 词：交流发电机 整流器 跳机 谐波 频率继电器 

分 类 号：TM611.22[电气工程—电力系统及自动化]