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

Article retrieval

文章检索

首页 >> 文章检索 >> 最新索引

变压器油绝缘电阻下降的原因分析与处理

来源:电工电气发布时间:2020-11-19 14:19 浏览次数:534
变压器油绝缘电阻下降的原因分析与处理
 
曾新雄,周恒,梁景明,孟晨旭,曾令诚,曾庆祝,罗其锋
(广东电网有限责任公司中山供电局,广东 中山 528400)
 
摘 要:针对某厂变压器批次性绝缘电阻降低的问题,对其产生的原因进行了分析,分析表明该厂在2001年和2002年生产的变压器油中铜离子和氨基比林含量都较高。铜离子的存在会增加变压器油中的水分含量,从而降低绝缘电阻;氨基比林遇酸则会生成盐,在电场中带电,盐类物质在非极性的变压器油中溶解有限,因此极易集聚形成带电微环境,从而降低变压器油的绝缘性能。提出了一种使用硅藻泥及丝光棉相组合的高效吸附滤板吸附过滤油的新型变压器油处理方法,并对现场处理工艺流程进行了阐述,应用实例表明,该法可以有效吸收变压器油中杂质,实现变压器油的循环利用。
关键词:变压器;绝缘电阻;氨基比林;铜离子;油再生
中图分类号:TM411 文献标识码:B 文章编号:1007-3175(2020)11-0040-04
 
Cause Analysis and Treatment of Transformer Oil Insulation Resistance Decline
 
ZENG Xin-xiong, ZHOU Heng, LIANG Jing-ming, MENG Chen-xu, ZENG Ling-cheng, ZENG Qing-zhu, LUO Qi-feng
(Zhongshan Power Supply Bureau of Guangdong Power Grid Co., Ltd, Zhongshan 528400,China)
 
    Abstract: In view of the decrease of insulation resistance of transformer batches in a certain factory, the reasons were analyzed. The analysis showed that the transformer oil produced by the factory in 2001 and 2002 contained high copper ion and Aminophenazone (AP) content. The presence of copper ions increases the moisture content of the insulating oil, this reduces the insulation resistance; When AP meets acid, it will generate salt, which will be charged in the electric field. Salt substances are limited to dissolve in non-polar transformer oil, so it is easy to gather and form charged microenvironment, thus reducing the insulating performance of insulating oil. The traditional treatment method of insulating oil can't completely absorb copper ion and AP, this paper presents a new treatment method of insulating oil, which can effectively absorb impurities in insulating oil and realize the recycling of transformer oil.
    Key words: transformer; insulation resistance; Aminophenazone (AP) ; copper ion; oil regeneration
 
参考文献
[1] 车辙. 变压器故障诊断方法设计与研究[D]. 西安:西安科技大学,2019.
[2] 钱晖,胡旭,申积良. 几台变压器油中铜含量异常的分析及处理[J]. 湖南电力,2007(5):14-16.
[3] 李文志,孙威,朱娟. 变压器油中特征气体含量超标的故障原因分析[J]. 电工电气,2019(10):39-41.
[4] 杨伟超,董家读,张峰. 变压器油中铜离子含量对绝缘性能影响的分析与处理[J]. 自动化技术与应用,2019,38(1):121-123.
[5] 钱国超,邹德旭,蒋雅婷,王景林,陈曦. 变压器绝缘性能下降诊断分析[J]. 云南电力技术,2013,41(4):42-44.
[6] 赵泽伟. 变压器油的老化对油介电性能的影响及对老化油的再生处理[J]. 变压器,2004,41(10):16-22.
[7] 贺冰冰, 王晶, 李绍英, 侯远芹. 吸附剂接触法在处理劣化汽轮机油中的应用[J]. 吉林电力,2005(6):39-41.