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首页> 外文期刊>International Transactions on Electrical Energy Systems >Investigation of characteristic parameters for condition evaluation of transformer oil-paper insulation using frequency domain spectroscopy
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Investigation of characteristic parameters for condition evaluation of transformer oil-paper insulation using frequency domain spectroscopy

机译：基于频域光谱学的变压器油纸绝缘状态评估特性参数研究

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摘要

Frequency domain spectroscopy (FDS) is employed to evaluate the moisture content and aging state of oil-paper insulation in power transformers. Oil-paper insulation samples with different moisture content and aging states were primarily prepared in the laboratory. A method was proposed based on a study of the influence of the aging state and moisture content on the frequency domain dielectric property of oil-paper insulation. This method distinguishes the influence of moisture content and aging state on FDS through the imaginary part of complex relative permittivity (εr″). Relevant characteristic parameters that characterize the moisture content and aging state of oil-impregnated pressboards were also extracted. Results reveal that the extracted characteristic parameters are sensitive to moisture content in the range of 10_1 Hz to 101 Hz and in the range of 10_3 Hz to 10_1 Hz for the aging state. An obvious exponential relationship exists between the maximum values of the characteristic parameters in the given frequency ranges and degree of polymerization and moisture content. The new method can be utilized for a non-destructive condition assessment of oil-paper insulation of transformers. Copyright © 2014 John Wiley & Sons, Ltd.
机译：频域光谱法（FDS）用于评估电力变压器中油纸绝缘的水分含量和老化状态。主要在实验室中准备了具有不同水分含量和老化状态的油纸绝缘样品。在研究老化状态和水分含量对油纸绝缘材料频域介电性能影响的基础上，提出了一种方法。该方法通过复数相对介电常数（εr''）的虚部区分水分含量和老化状态对FDS的影响。还提取了表征浸油纸板的水分含量和老化状态的相关特征参数。结果表明，对于老化状态，提取的特征参数对水分含量敏感，范围为10_1 Hz至101 Hz，范围为10_3 Hz至10_1 Hz。在给定的频率范围内，特征参数的最大值与聚合度和水分含量之间存在明显的指数关系。该新方法可用于变压器油纸绝缘的无损状态评估。版权所有©2014 John Wiley＆Sons，Ltd.

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  • 来源
  • 作者

    Youyuan Wang; Jun Gao; Ruijin Liao; Yiyi Zhang; Jian Hao; Jiefeng Liu; Zhiqin Ma;

  • 作者单位

    State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, China;

    State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, China;

    State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, China;

    State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, China Guangxi key Laboratory of Power System Optimization and Energy Technology, Guangxi University, Nanning, China;

    Chongqing Electric Power Corporation Electric Power Research Institute, Chongqing, China;

    State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing, China;

    Guangdong Electric Power Research Institute, Guangzhou, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    power transformer; oil-paper insulation; moisture content; aging states; FDS; temperature;

    机译：电源变压器;油纸绝缘;水分含量;老化状态;FDS;温度;

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