发电厂励磁系统故障分析与处理  

Fault Analysis and Treatment of Power Plant Excitation System

作　　者：许超财 刘志国 孙志军 XU Chaocai;LIU Zhiguo;SUN Zhijun(Sujin Shuozhou Gangue Power Generation Co.,Ltd.,Shuozhou 036800,China)

机构地区：[1]苏晋朔州煤矸石发电有限公司,山西朔州036800

出　　处：《电工技术》2023年第14期123-125,共3页Electric Engineering

摘　　要：在发电厂发变组系统中,励磁系统为发电机转子提供励磁电压,从而产生励磁电流形成发电机主磁通,在机电能量转换过程中起到纽带的作用。正常运行中通过励磁系统调节电力系统电压及机组无功功率,故障情况下励磁系统快速强励促使保护正确动作切除故障,因此励磁系统在发电厂以及电网运行中起到至关重要的作用。通过实际案例剖析,指导励磁系统的日常点检、维护工作,使得检修人员熟练掌握励磁系统相关软件逻辑及硬件原理,增强事故分析、处理能力,为解决同类型励磁系统故障提供参考依据。In the transformer system of power plant,the excitation system provides the excitation voltage for the generator rotor,thereby generating the excitation current to form the main magnetic flux of the generator,which plays a role as a link in the electromechanical energy conversion process.During normal operation,the excitation system voltage and reactive power of the unit are adjusted through the excitation system,and the rapid and strong excitation of the excitation system in the case of fault promotes the protection of correct action to cut the fault,so the excitation system plays a vital role in the operation of the power plant and the power grid.Through the analysis of actual cases,the maintenance personnel are proficient in the relevant software logic and hardware principles of the excitation system,and the accident analysis and handling capabilities of the maintenance personnel are enhanced,which provides a reference basis for solving the faults of the same type of excitation system,and has guiding significance for the daily inspection and maintenance of the excitation system.

关 键 词：励磁系统 故障 诊断 处理 

分 类 号：TM331[电气工程—电机]