【大型电机定子绕组绝缘局部放电在线监测研究】刘少克.pdf
ADissertationSubmitted toHuazhong UniversityofScience and Technologyfor theDegree ofDoctorofPhilosophyinEngineering On-lineMonitoringofPDofStatorWinding Insulation of Large Electrical Machines Ph.D.Candidate:Liu Shaoke Advisor:Prof.Lin Jinming Ass.Advisor:Ass.Prof.
数法设计的FIR滤波器在采样数据分析处理方面的应用作了研究。提 出了局部放电采样数据处理的自适应滤波方法,这种滤波方法有助于 在强的噪声干扰环境下发现弱的局放脉冲信号,从而对定子绕组绝缘 故障的早期诊断有一定的帮助.详细阐述了本课题所研制的在线监测采样装置结构,有关该 结构的某些电路设计、元器件选择对于所有以脉冲电流法进行局放在 线监测的装置来说具有普遍意义。
3.Noise sources and their preventionmeasureeare given.An on-line monitoring device is described.Off-and on-line experi- ments shows that the device iswel1 designed.In addition,in order to improve signal-noise ratio,adigital filter and adaptive filteringtechniquehavealsobeendeveloped.