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温度及老化状态对油纸绝缘时域介电响应特性影响的实验研究 被引量:27

Experimental Research on Effects of Temperature and Aging State on Time Domain Dielectric Response Characteristics of Oil-impregnated Pressboard Insulation
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摘要 针对老化过程及温度对油纸绝缘时域介电响应特性的影响开展了研究。对油浸纸绝缘试品在高温下进行了不同时间的人工加速热老化,采用极化去极化电流(polarization anddepolarization current,PDC)试验跟踪了其完整的老化进程,在不同的老化阶段开展了不同温度下的PDC试验。确认了温度和老化程度对PDC曲线有着较大的影响,温度的升高或老化程度的增加使PDC曲线向左上方移动。认为PDC试验主要反映油纸绝缘的2种类型界面极化,即油纸间的界面极化和纸板内不均匀结构引起的界面极化,前者响应较快,特征明显,适于评估绝缘老化状态。 针对老化过程及温度对油纸绝缘时域介电响应特性的影响开展了研究。对油浸纸绝缘试品在高温下进行了不同时间的人工加速热老化,采用极化去极化电流(polarization anddepolarization current,PDC)试验跟踪了其完整的老化进程,在不同的老化阶段开展了不同温度下的PDC试验。确认了温度和老化程度对PDC曲线有着较大的影响,温度的升高或老化程度的增加使PDC曲线向左上方移动。认为PDC试验主要反映油纸绝缘的2种类型界面极化,即油纸间的界面极化和纸板内不均匀结构引起的界面极化,前者响应较快,特征明显,适于评估绝缘老化状态。
出处 《中国电机工程学报》 EI CSCD 北大核心 2012年第S1期69-75,共7页 Proceedings of the CSEE
基金 基金项目:国家高技术研究发展计划项目(863计划)(2007AA04Z411) 深圳供电局有限公司科技项目(2012科成0011)~~
关键词 油浸纸绝缘 温度 老化状态 介电响应特性 极化去极化电流 oil-immersed paper insulation temperature aging status dielectric response characteristic polarization and depolarization current(PDC)
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参考文献20

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二级参考文献24

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