气体在变压器油中溶解特性的试验研究及应用
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摘要
变压器油在投运后会产生H_2、CO、CO_2和低分子烃类等气体,气体溶解和逸散受到环境温度、压力和油自身组成、溶解饱和程度、系统密封性等因素影响。为解决油样脱气量少、密封性较差等影响变压器故障判断准确性的问题,从平衡气在油样检测过程中的作用、饱和程度和体系密封性对溶解的影响等角度进行了模拟试验和研究,并与气体溶解平衡原理相结合,提出"定量进气法"和"母液稀释法"两种标准样品配制方法及装置。
H_2, CO, CO_2 and low molecular hydrocarbon gases are generated when the transformer oil is put into operation. Both dissolution and dissipation may be affected by such factors as the temperature and pressure of the environment, oil composition, saturation degree and system tightness. In order to solve the problems influencing transformer fault judgment accuracy, like small degassing amount and poor sealing, an experimental research has been conducted on the role the balance gas plays in oil sample detection process and the influence of the saturation degree and system tightness on dissolution. Combined with the dissolved gas balance principle, two standard sample preparation methods and devices—the ″quantitative gas intake method″ and the ″mother liquor dilution method″—are proposed.
H_2, CO, CO_2 and low molecular hydrocarbon gases are generated when the transformer oil is put into operation. Both dissolution and dissipation may be affected by such factors as the temperature and pressure of the environment, oil composition, saturation degree and system tightness. In order to solve the problems influencing transformer fault judgment accuracy, like small degassing amount and poor sealing, an experimental research has been conducted on the role the balance gas plays in oil sample detection process and the influence of the saturation degree and system tightness on dissolution. Combined with the dissolved gas balance principle, two standard sample preparation methods and devices—the ″quantitative gas intake method″ and the ″mother liquor dilution method″—are proposed.
引文
[1] 钱旭耀.变压器油及相关故障诊断处理技术[M].北京:中国电力出版社,2006.
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[4] 章政,杨荆林,肖登明,刘奕路.基于油中溶解气体分析的变压器绝缘故障诊断方法的研究和发展[J].电力设备,2004,5(1):20-24.
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[7] 于乃海,王坤.提高绝缘油中溶解气体组分含量分析水平的途径[J].山东电力技术,2006,52(6):49-52.
[8] 汪倩,张黎琳,宋蓓华.变压器油色谱在线监测在状态检修中的应用[J].华东电力, 2009,37(7):1195-1197.
[9] 卢立秋,郭军科,张桂贤,等.变压器在线色谱仪运行中的校准技术[J].供用电,2009,26(4):62- 64.
[10] 袁帅,阎春雨,毕建刚,等.变压器油中溶解气体在线监测装置技术要求与检验方法研究[J].电测与仪表,2012,49(11):35-38.
[11] 胥婷,于乃海,等.校验用变压器油标准气体计量模型及标准油配制研究[J].中国电力,2017,50(5):132-138.
[2] 操敦奎,许维宗,阮国方.变压器运行维护与故障分析处理[M].北京:中国电力出版社,2008.
[3] 孟玉婵,李荫才,贾瑞君,张仲旗.油中溶解气体分析及变压器故障诊断[M].北京:中国电力出版社,2012.
[4] 章政,杨荆林,肖登明,刘奕路.基于油中溶解气体分析的变压器绝缘故障诊断方法的研究和发展[J].电力设备,2004,5(1):20-24.
[5] 操敦奎.变压器油色谱分析与故障诊断[M].北京:中国电力出版社,2010.
[6] 徐康健,孟玉婵.变压器油中溶解气体的色谱分析实用技术[M].北京:中国标准出版社,2011.
[7] 于乃海,王坤.提高绝缘油中溶解气体组分含量分析水平的途径[J].山东电力技术,2006,52(6):49-52.
[8] 汪倩,张黎琳,宋蓓华.变压器油色谱在线监测在状态检修中的应用[J].华东电力, 2009,37(7):1195-1197.
[9] 卢立秋,郭军科,张桂贤,等.变压器在线色谱仪运行中的校准技术[J].供用电,2009,26(4):62- 64.
[10] 袁帅,阎春雨,毕建刚,等.变压器油中溶解气体在线监测装置技术要求与检验方法研究[J].电测与仪表,2012,49(11):35-38.
[11] 胥婷,于乃海,等.校验用变压器油标准气体计量模型及标准油配制研究[J].中国电力,2017,50(5):132-138.