发电机励磁系统在线功率晶闸管性能监测及其故障诊断专家系统  

Behaviour Monitoring of On-Line Power Thyristors in Generator Static Excitation System and Its Fault Diagnosis Using Expert System

作　　者：孙雅明[1] 王玉生[1] 马群章[2] 张福[2] 

机构地区：[1]天津大学 [2]潘家口水电厂

出　　处：《中国电机工程学报》1991年第2期37-46,共10页Proceedings of the CSEE

摘　　要：为提高大容量发电机组运行的可靠性,研究发电机静止励磁系统在线功率晶闸管主要性能参数的监测,实现在线晶闸管性能恶化预诊断和故障诊断是极为重要的。所研究的检测系统是运用光电转换—光导纤维—光电转换原理构成,再经微机采集和处理系统,建立在线运行晶闸管性能数据库,进行参数趋势分析。并在此基础上开发晶闸管故障诊断专家系统软件。该微机系统又用作励磁调节器各单元特性试验的计算机辅助系统。所研究系统有效地解决了在线晶闸管性能监测及其故障诊断问题,使现场运行、维护质量和劳动效率有很大的提高。Prime behaviour monitoring of on-line power thyristors in generator static excitation system is studied, it is of great importance to realize the fault diagnosis of on-line thyristors in order to improve reliability and security of large power generator unit operation. The principle of detecting instrument is developed which consists of the elctrooptic converters——optical fibre——opto-electric converters, a micro-computer-based system of dataacqusition and processing is used in building behaviour data base of on-line thyristors and to do tendency analysis of all data. For the above reasons, an Expert System is built for use as fault diagnosis of on-line thyristors. This system is succeed solving key problem of behaviour monitoring of on-line thyristors, which will greatly increase in the field operation and maintenance quality and labour efficiency. In addition, this micro-computer system also is developed to use as computer-aided system of characteristics test of excitation regulator units of generators.

关 键 词：发电机 励磁系统 晶闸管 监测 故障 

分 类 号：TM310.12[电气工程—电机]