Evaluation of Oil-paper Insulation Condition Based on Improved Grey Target Theory

XU Yuxiang; JIANG Xiubo; CAI Jinding

doi:10.13296/j.1001-1609.hva.2018.02.021

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Evaluation of Oil-paper Insulation Condition Based on Improved Grey Target Theory

更新时间：2025-04-26

- Evaluation of Oil-paper Insulation Condition Based on Improved Grey Target Theory
- High VoltageApparatus Vol. 54, Issue 2, Pages: 128-133(2018)
- 作者机构：
  
  福州大学电气工程与自动化学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.02.021
  CLC： TM855
- Published：2018
- 稿件说明：
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[1]徐煜祥,江修波,蔡金锭.基于改进灰靶理论的油纸绝缘状态评估[J].高压电器,2018,54(02):128-133.

XU Yuxiang, JIANG Xiubo, CAI Jinding. Evaluation of Oil-paper Insulation Condition Based on Improved Grey Target Theory[J]. High voltageapparatus, 2018, 54(2): 128-133.
[1]徐煜祥,江修波,蔡金锭.基于改进灰靶理论的油纸绝缘状态评估[J].高压电器,2018,54(02):128-133. DOI： 10.13296/j.1001-1609.hva.2018.02.021.

XU Yuxiang, JIANG Xiubo, CAI Jinding. Evaluation of Oil-paper Insulation Condition Based on Improved Grey Target Theory[J]. High voltageapparatus, 2018, 54(2): 128-133. DOI： 10.13296/j.1001-1609.hva.2018.02.021.

摘要

文中将改进灰靶理论应用于变压器油纸绝缘老化状态研究。首先利用回复电压法测量数据以及基于ED等效电路模型辨识相关参数

将提取的参数作为评估油纸绝缘状态的特征量;其次

针对各项特征量对于油纸绝缘老化状态影响各有不同

采用改进层次分析法—熵权法组合算法分配各特征量权重;最后

收集若干台电力变压器数据并进行油纸绝缘状态分级计算

通过实例证明了该方法能有效、合理地评估变压器油纸绝缘老化状态

为变压器状态检修提供参考。

Abstract

The improved grey target theory is applied in the research of transformer oil-paper insulation aging state.First the data are measured by recovery voltage method and relative parameters are identified by equivalent circuit ofED

using extracted parameters as the characteristic quantity of assessment of oil-paper insulation aging state. Sec-ond

because of the different influence of several characteristic quantities on oil-paper insulation aging state

the im-proved AHP method and entropy weight method is used in the weight distribution of these characteristic quantities.Last

the data of transformer are collected and grades of oil-paper insulation aging states are calculated. Experimentalresults show that this method can effectively and reasonably evaluate the transformer oil paper insulation aging statusand provide a reference for the transformer condition maintenance.

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