| 基于力学损耗和介质损耗参数分析大型发电机主绝缘的老化特征 |
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| 引用本文： | 贾志东,郝艳捧,蒋雄伟,谢恒堃,耿瑞香.基于力学损耗和介质损耗参数分析大型发电机主绝缘的老化特征[J].中国电机工程学报,2000,20(11):1-5. |
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| 作者姓名： | 贾志东 郝艳捧 蒋雄伟 谢恒堃 耿瑞香 |
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| 作者单位： | 1. 西安交通大学电力设备与电气绝缘国家重点实验室,陕西省,西安市,710049
2. 太原电力高等专科学校电力系,山西省,太原市,030013 |
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| 基金项目： | 国家自然科学基金重点资助项目! ( 598372 60 ) |
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| 摘 要： | 大型发电机的主绝缘是发电机的主要组成部分这一,大型发电机的可用性和剩余寿命在很大程度上取决于主绝缘的状况,目前,大型发电机主绝缘普遍采用环氧云母绝缘体系。针对发电机运行中主绝缘的老化情况,选用环氧云母体系绝缘材料,进行了电热应力联合作用下和热机械应力作用第化实验;采用新的分析方法－动态力学分析法测试了不同老化时间的绝缘材料的老化特性,并且将动态力学参数与介质损耗参数作了比较;从而提出了用态动力学参
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| 关 键 词： | 大型发电机 主绝缘 老化特征 力学损耗 介质损耗 |
| 修稿时间： | 1999-09-03 |
THE ANALYSIS OF AGING CHARACTERISTCS OF GENERATOR STATOR INSULATION BASED ON LOSS PROPERTIES OF DYNAMICS AND DIELECTRIC |
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| JIA Zhi-dong,HAO Yan-peng,JIANG Xiong-wei,XIE Heng-kun,GENG Rui-xiang.THE ANALYSIS OF AGING CHARACTERISTCS OF GENERATOR STATOR INSULATION BASED ON LOSS PROPERTIES OF DYNAMICS AND DIELECTRIC[J].Proceedings of the CSEE,2000,20(11):1-5. |
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| Authors: | JIA Zhi-dong HAO Yan-peng JIANG Xiong-wei XIE Heng-kun GENG Rui-xiang |
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| Abstract: | Epoxy mica stator insulation system is one of the most important parts of generator. In most cases the reliability and residual life of generators largely depend on the condition of stator insulation. In this paper, accelerated aging test was conducted on epoxy mica insulation under the conditions of electrical thermal stresses as well as thermal mechanical stresses. In the period of aging, dynamic mechanical analysis was employed to investigate aging characteristics of insulation materials. Test results showed that the trend of dynamic mechanical properties was fairly consistent with that of dielectric dissipation. Accordingly, it was suggested that dynamic mechanical properties could be used to describe the aging characteristics of stator insulation epoxy mica. |
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| Keywords: | generator stator insulation dynamic mechanical properties dielectric loss aging |
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