摘要
针对励磁功率单元故障影响发电机组的安全运行问题,分析总结了励磁功率单元的故障类型和常见故障。通过Matlab仿真模拟了功率单元主回路故障类型,重点分析了功率单元的输入电流波形,并提取了故障特征,给出了快速诊断功率单元故障的方法,该方法能够正确地诊断出功率单元主回路具体的故障晶闸管,为励磁功率单元故障诊断提供依据。
The excitation power unit fault will seriously affect the safe operation of generator units .Several typical types of the excitation power unit fault and the specific performances are summarized .Then , the main circuit faults of the pow-er unit are simulated with Matlab software .The input current waveforms are analyzed and the fault characteristics are ex-tracted.A fast fault diagnosing scheme is proposed correspondingly , which is able to determine the exact faulty thyristor in the main circuit of the power unit .It provides a useful reference for the fault diagnosis of excitation power units .
出处
《水电与新能源》
2016年第7期69-72,共4页
Hydropower and New Energy
关键词
多桥并列
功率单元
晶闸管
故障诊断
Multi-bridge parallel-operated
excitation power unit
thyristor
fault diagnosing
