一起励磁系统引起的发电机组跳闸事故分析  

The Analysis of One Generator-tripping Accident Caused by Fault in Excitation System

作　　者：徐鹏煜[1] 陈强[1] 

机构地区：[1]河南电力试验研究院,郑州450052

出　　处：《大电机技术》2011年第6期60-62,66,共4页Large Electric Machine and Hydraulic Turbine

摘　　要：现代电力系统中,自动励磁系统是保障发电机安全运行和电网稳定的重要条件。介绍一起因励磁系统故障造成的发电机组跳闸事故,根据保护动作情况和录波数据,通过全面检查、现场试验和数据分析得出事故发生的原因和过程,提出了合理的建议,表明了励磁调节器的设备制造、功能设计和日常运行维护的重要性。As one of the essential components for generator unit, the automatic excitation system had played very important role in guaranteeing generator safety and power grid stability. An accident of generator trip caused by fault in excitation system had been introduced in this paper. The process and causation of accident had been found through the analysis on the history data of relay protection system, fault recording system and the tests on-site. Besides, some feasible suggestion had been proposed based on the thorough checking and data analyzing. The conclusion of this paper is that, any problem found in the whole course of excitation system, including function design, equipment assembling and daily maintenance, should never be ignored or negligible.

关 键 词：励磁系统 过励限制 低励限制 进相运行 PT断线 

分 类 号：TM621.3[电气工程—电力系统及自动化]