Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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40.5 kV开关柜绝缘件性能降低原因分析

来源:电工电气发布时间:2022-09-26 14:26 浏览次数:287

40.5 kV开关柜绝缘件性能降低原因分析

王韧1,施成云1,蔺鑫1,王晖1,史振朋2
(1 云南电网有限责任公司临沧供电局,云南 临沧 677000;
2 上海雷博司电气股份有限公司,上海 201807)
 
    摘 要:在外部运行环境和电网负荷的双重影响下,40.5 kV 开关柜绝缘件故障问题愈发严重。为了验证绝缘件性能下降的原因,对不同时间段的 40.5 kV 触头盒进行了工频、局放性能测试,研究了绝缘材料配比、环境吸潮等因素对绝缘件性能的影响,并结合红外、热重等分析方法,总结出了绝缘件性能下降的主要影响因素。
    关键词: 40.5 kV 开关柜;绝缘件;环氧树脂;局部放电
    中图分类号:TM591     文献标识码:B     文章编号: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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