[1]方春华,刘浩春,任志刚,等.硅脂对交联聚乙烯绝缘与硅橡胶界面电场的影响[J].高压电器,2019,55(04):65-71.[doi:10.13296/j.1001-1609.hva.2019.04.010]
 FANG Chunhua,LIU Haochun,REN Zhigang,et al.Effect on Electric Field of Silicone Grease on XLPE/Silicone Rubber Interface[J].High Voltage Apparatus,2019,55(04):65-71.[doi:10.13296/j.1001-1609.hva.2019.04.010]
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硅脂对交联聚乙烯绝缘与硅橡胶界面电场的影响()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年04期
页码:
65-71
栏目:
研究与分析
出版日期:
2019-04-15

文章信息/Info

Title:
Effect on Electric Field of Silicone Grease on XLPE/Silicone Rubber Interface
文章编号:
0065-0071
作者:
方春华1 刘浩春1 任志刚2 郭卫2 李景1 张帅1 周雨秋1
1. 三峡大学电气与新能源学院,湖北宜昌443002;2. 国网北京电力科学研究院,北京100075
Author(s):
FANG Chunhua1LIU Haochun1REN Zhigang2GUO Wei2LI Jing1ZHANG Shuai1 ZHOU Yuqiu1
1. College of Electrical Engineering and New Energy,China Three Gorges University,Hubei Yichang 443002,China;2. State Grid Beijing Electric Power Research Institute,Beijing 100075,China
关键词:
电缆中间接头交联聚乙烯绝缘与硅橡胶界面硅脂电场影响
Keywords:
cable intermediate jointinterface of XLPE/silicone rubbersilicone greaseeffect on electric field
DOI:
10.13296/j.1001-1609.hva.2019.04.010
摘要:
在交联聚乙烯绝缘与硅橡胶界面涂抹硅脂是制作电缆中间接头的一个关键步骤,但实际制作电缆接 头时,由于现场施工人员对硅脂认识不足,常有硅脂漏涂、涂抹不均匀的情况,而硅脂对界面电场的影响研 究尚未见报道,为此建立10 kV电缆中间接头三维有限元模型,分析硅脂有、无;涂抹均匀和不均匀时的电场 分布规律,同时还研究了硅脂对杂质缺陷电场的抑制作用。仿真结果表明,未涂抹硅脂时,界面最大场强比 涂抹硅脂时增大了3.79倍;硅脂涂抹不均匀时,涂抹不均匀处最大场强比均匀涂抹硅脂时增加2.8倍。未涂 抹硅脂、硅脂涂抹不均匀均会造成界面电场严重畸变。且硅脂涂抹不均匀时,空气隙处场强与其到外半导 切断处轴向距离及空气隙厚度均成反比关系。此外界面存在杂质缺陷时,涂抹硅脂情况下电场强度远小于 未涂抹硅脂时电场强度。说明涂抹硅脂对杂质缺陷的电场有很好的优化作用。规范涂抹硅脂是施工不可 缺少的环节。
Abstract:
The application of silicone grease at the interface of XLPE/silicone rubber is a key step in the production of cable intermediate joints. However,staff members are not sufficiently aware of the importance of application of sili? cone grease. It’s often to find silicone grease not applied or unevenly smeared. The effect of silicone grease on the in? terface electric field has not been reported. Therefore,this paper established a three?dimensional finite element mod? el of the 10 kV cable intermediate joint to analyze the electric field distribution under three working situations,that silicon grease is applied or not; silicon grease is distributed evenly and unevenly; and the focus on the inhibitory ef? fect of silicone grease on other defects. The simulation results show that,when no grease is applied,the maximum field strength of the interface is 3.79 times larger than that of when silicon grease is applied,the maximum field strength under the situation that silicon grease is distributed unevenly is 2.8 times larger than that of when the silicon grease is unevenly applied. Absence of silicone grease and unevenly distributed silicon smearing both cause serious distortion of the interface electric field distribution. In addition,when there is a main insulation impurity in the sili? cone grease,the electric field strength of the coated silicone grease is much lower than that of the uncoated silicone grease. It shows that the application of silicone grease has optimizing function on electric field distribution under im? purity defects situation. Applying silicone grease is an indispensable part of on construction.

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备注/Memo

备注/Memo:
收稿日期:2018?08?08; 修回日期:2018?10?17; 方春华(1980—),男,博士,副教授,硕导,主要从事高电 压绝缘与在线监测技术方面的研究工作。 研究与分析方春华,刘浩春,任志刚,等. 硅脂对交联聚乙烯绝缘与硅橡胶界面电场的影响
更新日期/Last Update: 2019-04-16