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    • 1. 发明授权
    • Method for evaluating deterioration of insulating paper
    • 绝缘纸的劣化评价方法
    • US06276222B1
    • 2001-08-21
    • US09230507
    • 1999-01-26
    • Teruo MiyamotoYoshihiro MakinoIsao ItakuraHitoshi Anetai
    • Teruo MiyamotoYoshihiro MakinoIsao ItakuraHitoshi Anetai
    • G01N3334
    • H01F27/321G01N17/00G01N33/004G01N33/2841G01N33/346Y02A50/243
    • According to the present invention, insulating paper immersed in an oil is heated and deteriorated at a temperature up to 110° C. which is in an operating temperature region for an oil-filled electric apparatus, and the value of the degree of the polymerization which decreases with the deterioration of the insulating paper and amount of carbon dioxide and carbon monoxide which is generated by the heat decomposition of the insulating paper and which is dissolved in the insulating oil are used to observe the generation rate thereof. The present invention is a method of evaluating deterioration characteristics of insulating paper from the change of the degree of polymerization with passage of time and from the temperature dependence of the gas generation rate. The deterioration of the insulating paper has different aspects in the regions higher and lower than 110° C., and the deterioration characteristics of the insulating paper on the low temperature side can be accurately evaluated. The deterioration of the insulating paper has different aspects in the regions higher and lower than 110° C., and the deterioration characteristics of the insulating paper on the low temperature side can be accurately evaluated.
    • 根据本发明,浸渍在油中的绝缘纸在用于充油电气设备的工作温度区域中的温度高达110℃的温度下被加热和劣化,并且聚合度 绝缘纸的劣化减少,绝热纸的热分解产生的溶解在绝缘油中的二氧化碳和一氧化碳的量被使用来观察其发生率。 本发明是一种评估绝缘纸的劣化特性的方法,其特征在于随着时间的流逝和聚合时间的变化以及气体产生速率的温度依赖性。 绝缘纸的劣化在高于和低于110℃的区域中具有不同的方面,并且可以精确地评估绝缘纸在低温侧的劣化特性。绝缘纸的劣化在 高于和低于110℃的区域,并且可以精确地评价低温侧的绝缘纸的劣化特性。