[1]夏 军,张璧辉,杨知非,等.电力谐波对变压器套管电容芯子介质损耗的影响研究[J].电瓷避雷器,2020,(01):222-227.[doi:10.16188/j.isa.1003-8337.2020.01.037]
 XIA Jun,ZHANG Bihui,YANG Zhifei,et al.Study on the Influence of Power Harmonic on the Dielectric Loss of Transformer Capacitive Bushings[J].,2020,(01):222-227.[doi:10.16188/j.isa.1003-8337.2020.01.037]
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电力谐波对变压器套管电容芯子介质损耗的影响研究()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年01期
页码:
222-227
栏目:
绝缘子
出版日期:
2020-02-20

文章信息/Info

Title:
Study on the Influence of Power Harmonic on the Dielectric Loss of Transformer Capacitive Bushings
作者:
夏 军1 张璧辉1 杨知非1 黄道春1 杨帮华2
(1.武汉大学电气工程学院,武汉 430072; 2.国网黄石供电公司,湖北 黄石 435000)
Author(s):
XIA Jun1 ZHANG Bihui1 YANG Zhifei1 HUANG Daochun1 YANG Banghua2
(1.School of Electrical Engineering, Wuhan University, Wuhan 430072, China; 2.Huangshi Power Supply Company of National Grid, Huangshi 435000, China)
关键词:
电力谐波 电容式绝缘套管 介质损耗 频变特性 频域有限元法
Keywords:
electric harmonic capacitive insulated bushings dielectric loss frequency-varying characteristics finite element method of frequency domain
DOI:
10.16188/j.isa.1003-8337.2020.01.037
摘要:
变压器绝缘套管中实际加载的电压波形中谐波成分含量较高,为了探究电压谐波对变压器套管电容芯子介质损耗的影响,基于频域有限元法建立了220 kV电容式变压器套管的有限元模型,获得了变压器套管电容芯子绝缘介质的非线性频变特性曲线,并进一步考虑了电容芯子介电常数频变特性对其介质损耗发热的影响。在给定波形参数下,电容芯子在谐波作用下的频变特性对介质损耗发热的增强系数仅为0.27%,高次谐波对电容芯子的介质损耗发热影响较小。研究结果对于电容式套管的介质损耗发热和其事故分析具有一定的参考价值。
Abstract:
The actual voltage waveforms of the transformer bushings contain a large number of high harmonics. In order to explore the harmonic influence on dielectric loss of bushing capacitor core, the finite element models of 220 kV capacitive bushing was established based on frequency domain finite element method. And the nonlinear frequency variation characteristic curve of the capacitor core insulating medium was obtained, which was considered to study the effect of the dielectric loss heating. Under the given waveform parameters, the frequency variation of the core under the harmonics is only 0.27% times higher than that of the dielectric loss, and the high harmonic has less effect on the dielectric loss of the capacitive bushing. The study results provide reference for the calculation of the heat performance and fault analysis of the high-voltage capacitive bushings.

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备注/Memo

备注/Memo:
收稿日期:2018-06-11作者简介:夏军(1992—),男,硕士,从事高电压与绝缘技术及电工技术新材料的研究工作。
更新日期/Last Update: 2020-02-20