摘要
针对目前极少有文献对极化去极化电流内部弛豫信息进行研究,提出了一种基于去极化电流微分谱线的峰谷点数来评估油纸绝缘系统微水含量的方法。利用极化去极化电流法获取去极化电流谱线,通过去极化电流微分谱线得到峰谷点数,以此作为诊断油纸绝缘系统微水含量的依据。研究发现,去极化电流微分谱线峰谷点数随油纸绝缘设备微水含量的增加而增加,因此运用峰谷点数可定性评估油纸绝缘设备微水含量,且峰谷点数越多,微水含量越严重。最终的理论结果与实际情况基本吻合,进一步验证了该方法的准确性和可行性。研究提出的理论和方法为今后评估油纸绝缘系统的微水含量提供了一种可靠而有力的分析手段。
In order to overcome the limitations of few literature research on internal relaxation information from the polarization and depolarization current,putting forward a method based on the peak and valley points of differential spectrum of depolarization current to evaluate the micro water content of oil-paper insulation system.The polarization and depolarization current method（PDC） is used for measuring depolarization current curve.Then get the peak and valley points from the differential spectrum of depolarization current,to diagnose the micro water content of oil-paper insulation system.The study found that the peak and valley points increase with the micro water content.Therefore,the use of the points can be a qualitative assessment of oil-paper insulation equipment micro water content,and more points,more serious the micro water content is.The final theoretical results accord with the actual situation,which further validate the accuracy and feasibility of the method.The theory and method in this paper provide a reliable and effective analysis method for the evaluation in the micro water content of oil-paper insulation system in the future.
出处
《电子测量与仪器学报》
CSCD
北大核心
2015年第10期1478-1484,共7页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金(61174117)项目
关键词
油纸绝缘
微水含量
去极化电流微分谱线
峰谷点数
oil-paper insulation
micro water content
differential spectrum of depolarization current
peak/ valley points
