Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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40.5 kV開關(guān)柜絕緣件性能降低原因分析

來源:電工電氣發(fā)布時(shí)間:2022-09-26 14:26 瀏覽次數(shù):459

40.5 kV開關(guān)柜絕緣件性能降低原因分析

王韌1,施成云1,藺鑫1,王暉1,史振朋2
(1 云南電網(wǎng)有限責(zé)任公司臨滄供電局,云南 臨滄 677000;
2 上海雷博司電氣股份有限公司,上海 201807)
 
    摘 要:在外部運(yùn)行環(huán)境和電網(wǎng)負(fù)荷的雙重影響下,40.5 kV 開關(guān)柜絕緣件故障問題愈發(fā)嚴(yán)重。為了驗(yàn)證絕緣件性能下降的原因,對(duì)不同時(shí)間段的 40.5 kV 觸頭盒進(jìn)行了工頻、局放性能測(cè)試,研究了絕緣材料配比、環(huán)境吸潮等因素對(duì)絕緣件性能的影響,并結(jié)合紅外、熱重等分析方法,總結(jié)出了絕緣件性能下降的主要影響因素。
    關(guān)鍵詞: 40.5 kV 開關(guān)柜;絕緣件;環(huán)氧樹脂;局部放電
    中圖分類號(hào):TM591     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2022)09-0042-04
 
Analysis of Performance Degradation of the Insulating
Part of 40.5 kV Switch Cabinet
 
WANG Ren1, SHI Cheng-yun1, LIN Xin1, WANG Hui1, SHI Zhen-peng2
(1 Lincang Power Supply Bureau of Yunnan Power Grid Co., Ltd, Lincang 677000, China;
2 Shanghai ROX Electric Co., Ltd, Shanghai 201807, China)
 
    Abstract: Performance degradation of insulating parts of the 40.5 kV switch cabinet has been a severe problem because of the influence of the external operating environment and the power grid load. This paper applied the power frequency test and the partial discharge test on the 40.5 kV contact boxes at various times and studied many factors that could impact the performance of the insulting part, such as the ratio of insulating materials and environmental moisture absorption. It summarizes the main influencing factors of the performance degradation of the insulating part by employing analysis methods, such as IR test and TGA test.
    Key words: 40.5 kV switch cabinet; insulating part; epoxy resin; partial discharge
 
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