变压器呼吸器油封杯频繁缺油分析及对策
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摘要
为解决某变电站发生的一起变压器呼吸器油封杯频繁缺油缺陷问题,对该油封杯缺油原因进行了详细分析并提出解决对策。首先,基于变压器呼吸系统基本原理,量化分析变压器呼吸时油封杯内外油杯的油位变化,分析得出油封杯尺寸匹配不当是导致油封杯缺油的直接原因;进一步进行决策分析并提出增大内油杯内径是最有效且可行的方法,同时基于计算结果重新设计油杯尺寸并加工。通过对比新旧呼吸器运行结果得出,未更改尺寸油封杯的油位随着运行时间增长出现明显下降,而新设计油封杯的油位则保持良好,即呼吸时不再因为油杯尺寸不匹配而发生油量减少,油杯频繁缺油的问题得到有效解决。
In order to solve the problem of frequent oil deficiency in the oil seal cup of transformer breather in one substation,this paper analyzes reasons and proposes countermeasures.Firstly,on the basis of principle of the transformer breathing system,it quantitatively analyzes oil level changes of the outer oil cup in the oil seal cup and summarizes the direct reason for oil deficiency is improper size of the oil seal cup.According to further decision-making analysis,it points out increase of inner diameter of the inner cup is effective and feasible.Meanwhile,it proposes to redesign size of the oil cup for processing according to calculation results.By comparing operating results of the used and the new breathers,it comes to a conclusions that oil level of the used oil seal cup dramatically reduces with increase of its running time while oil level of the newly designed oil seal cup keeps good which means oil mass will not reduce due to unmatched size of the cup and the problem of frequent oil deficiency is effectively solved.
In order to solve the problem of frequent oil deficiency in the oil seal cup of transformer breather in one substation,this paper analyzes reasons and proposes countermeasures.Firstly,on the basis of principle of the transformer breathing system,it quantitatively analyzes oil level changes of the outer oil cup in the oil seal cup and summarizes the direct reason for oil deficiency is improper size of the oil seal cup.According to further decision-making analysis,it points out increase of inner diameter of the inner cup is effective and feasible.Meanwhile,it proposes to redesign size of the oil cup for processing according to calculation results.By comparing operating results of the used and the new breathers,it comes to a conclusions that oil level of the used oil seal cup dramatically reduces with increase of its running time while oil level of the newly designed oil seal cup keeps good which means oil mass will not reduce due to unmatched size of the cup and the problem of frequent oil deficiency is effectively solved.
引文
[1]曲在辉.变压器检修[M].北京:中国电力出版社,2012.
[2]冯超.电力变压器检修与维护[M].北京:中国电力出版社,2013.
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[4]武剑灵,孙瑞龙,岳永刚.智能免维护呼吸器在变压器应用中的优势[J].变压器,2016,53(3):47-49.WU Jianling,SUN Ruilong,YUE Yonggang.Advantage in Application of Intelligent Maintenance-free Respirator in Transformer[J].Transformer,2016,53(3):47-49.
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[7]KOCH M,TENBOHLEN S,ROSNER M.Mositure Ingress in Free Breathing Transformers[C]//Proc 2008 International Conference on Condition Monitoring and Diagnosis.Beijing:IEEE,2008:646-650.
[8]张霁月,李超文,邹刚.变压器呼吸器运行中的异常分析与维护[J].安徽电力,2011,28(4):10-13.ZHANG Jiyue,Li Chaowen,Zou Gang.Analysis and Maintenance on Anomalies in Transformer Respirator Operation[J].Anhui Electric Power,2011,28(4):10-13.
[9]龚杰,龚敏,谭一粟,等.浅析变压器油位计和呼吸器故障[J].变压器,2015(8):62-66.GONG Jie,GONG Min,TAN Yisu,et al.Brief Disscussion on Faults of Oil-level Meter and Respirator for Transformer[J].Transformer,2015(8):62-66.
[10]PUSHPAVBALLI M,SIVAGAMI P.Wireless Expounding of Voltage,Current,Temperature,Gas in Transformer[C]//Proc 2016 International Conference on Computation of Power,Energy Information and Commuincation(ICCPEIC).Chennai:IEEE,2016:768-772.
[11]钱艺华,李智,林永平,等.广东电网500 kV变压器绝缘油腐蚀性硫普查和处理[J].高压电器,2010,46(12):104.QIAN Yihua,LI Zhi,LIN Yongping,et al.Investigation and Treatment of Insulation Oil Corrosive Sulfur of 500 kV Transformers in Guangdong Power Grid[J].High Voltage Apparatus,2010,46(12):104.
[12]黄皓炜.变压器油中溶解气体在线监测系统的原理及应用[J].浙江电力,2016,35(2):31–35.HUANG Haowei.Principle and Application of Online Monitoring System of Dissolved Gases in Transformer Oil[J].Zhejiang Electric Power,2016,35(2):31-35.
[2]冯超.电力变压器检修与维护[M].北京:中国电力出版社,2013.
[3]沈文.主变本体呼吸器突发溢油处理[C]//江苏省电机工程学会城市供用电专业委员会.2015年江苏省城市供用电学术年会论文集.江苏:江苏省电机工程学会城市供用电专业委员会,2015.
[4]武剑灵,孙瑞龙,岳永刚.智能免维护呼吸器在变压器应用中的优势[J].变压器,2016,53(3):47-49.WU Jianling,SUN Ruilong,YUE Yonggang.Advantage in Application of Intelligent Maintenance-free Respirator in Transformer[J].Transformer,2016,53(3):47-49.
[5]孙正来,张霁月.变压器类充油设备呼吸器运行现状及配置分析[J].安徽电力,2013(3):1-3,17.SUN Zhenglai,ZHANG Jiyue.Analysis of Transformer Oil Filling Equipment Status and Configuration of Respirator[J].Anhui Electric Power,2013(3):1-3,17.
[6]KUMAR S,ISLAM T,RAINA K K.A moisture-in-breather model for transformer health monitoring[C]//Proc 2015 Annual IEEE India Conference(INDICON).New Delhi:IEEE,2015:1-5.
[7]KOCH M,TENBOHLEN S,ROSNER M.Mositure Ingress in Free Breathing Transformers[C]//Proc 2008 International Conference on Condition Monitoring and Diagnosis.Beijing:IEEE,2008:646-650.
[8]张霁月,李超文,邹刚.变压器呼吸器运行中的异常分析与维护[J].安徽电力,2011,28(4):10-13.ZHANG Jiyue,Li Chaowen,Zou Gang.Analysis and Maintenance on Anomalies in Transformer Respirator Operation[J].Anhui Electric Power,2011,28(4):10-13.
[9]龚杰,龚敏,谭一粟,等.浅析变压器油位计和呼吸器故障[J].变压器,2015(8):62-66.GONG Jie,GONG Min,TAN Yisu,et al.Brief Disscussion on Faults of Oil-level Meter and Respirator for Transformer[J].Transformer,2015(8):62-66.
[10]PUSHPAVBALLI M,SIVAGAMI P.Wireless Expounding of Voltage,Current,Temperature,Gas in Transformer[C]//Proc 2016 International Conference on Computation of Power,Energy Information and Commuincation(ICCPEIC).Chennai:IEEE,2016:768-772.
[11]钱艺华,李智,林永平,等.广东电网500 kV变压器绝缘油腐蚀性硫普查和处理[J].高压电器,2010,46(12):104.QIAN Yihua,LI Zhi,LIN Yongping,et al.Investigation and Treatment of Insulation Oil Corrosive Sulfur of 500 kV Transformers in Guangdong Power Grid[J].High Voltage Apparatus,2010,46(12):104.
[12]黄皓炜.变压器油中溶解气体在线监测系统的原理及应用[J].浙江电力,2016,35(2):31–35.HUANG Haowei.Principle and Application of Online Monitoring System of Dissolved Gases in Transformer Oil[J].Zhejiang Electric Power,2016,35(2):31-35.