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文章摘要
交流电压下发电机定子线棒典型缺陷局部放电特性研究
Investigation of Partial Discharge Characteristics of Typical Defects in Generator Stator under AC Voltages
Received:March 19, 2020
Revised:April 10, 2020
DOI：
10.19753/j.issn1001-1390.2021.02.002
中文关键词
:
发电机定子
典型缺陷
局部放电
放电图谱
英文关键词
:
基金项目
:
修回稿已添加省级基金。
Author Name
Affiliation
E-mail
yangmin
Zhejiang Energy Group Research Institute Co.
,
Ltd
13567193079@139.com
wangxin
Zhejiang Energy Group Research Institute Co.
,
Ltd
wx3515@163.com
dongxiaozhong
Zhejiang Energy Group Research Institute Co.
,
Ltd
13606641125@139.com
杜浩
Zhejiang Provincial Key Laboratory of Electrical Machine Systems
,
College of Electrical Engineering
,
Zhejiang University
duhao_hvlab@163.com
xvxing
Zhejiang Provincial Key Laboratory of Electrical Machine Systems
,
College of Electrical Engineering
,
Zhejiang University
xuxingabcd@qq.com
chenxiangrong
*
Zhejiang Provincial Key Laboratory of Electrical Machine Systems
,
College of Electrical Engineering
,
Zhejiang University
chenxiangrongxh@zju.edu.cn
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中文摘要
:
本文采用实际运行中的发电机定子线棒，制作了三种典型故障缺陷模型，利用脉冲电流法研究在不同外施电压下三种典型缺陷的局部放电特性。结果表明，槽部放电定子线棒的起始放电电压最低，放电图谱在工频电压负半周起始位置有陡峭的上升现象；内部放电定子线棒的起始放电电压最高，PRPD图谱具有明显的对称性，放电相位分布最为宽泛；端部放电定子线棒具有明显的极性效应，工频电压负半周的放电活动更为剧烈。槽部放电定子线棒随加压时间的延长绝缘老化现象十分明显，平均放电量上升，放电重复率先增加后减小。实验结果给发电机定子绝缘监测和故障诊断提供了必要的实验数据。
英文摘要
:
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