Research on Insulation State Assessment Method of Power Transformer Based on Health Index

JIANG Tao; YANG Chuankai; WANG Jing; HUANG Guoqiang; CAO Liqiang; SHI Yiqing

doi:10.13296/j.1001-1609.hva.2024.05.016

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Research on Insulation State Assessment Method of Power Transformer Based on Health Index

Research & Analysis | 更新时间：2025-04-26

- Research on Insulation State Assessment Method of Power Transformer Based on Health Index
- High Voltage Apparatus Vol. 60, Issue 5, Pages: 124-129(2024)
- 作者机构：
  
  1.国网陕西省电力公司，西安　 710049
  2.国网陕西省电力公司电力科学研究院，西安　 710049
- 作者简介：
- 基金信息：
  
  Science and Technology Project from State Grid Shaanxi Electric Power Company(B626KY190004)
- DOI：10.13296/j.1001-1609.hva.2024.05.016
  CLC：
- Received：19 December 2023，
  
  Revised：24 February 2024，
  
  Published：16 May 2024
- 稿件说明：
移动端阅览
JIANG Tao, YANG Chuankai, WANG Jing, et al. Research on Insulation State Assessment Method of Power Transformer Based on Health Index[J]. High voltage apparatus, 2024, 60(5): 124-129.
DOI：

JIANG Tao, YANG Chuankai, WANG Jing, et al. Research on Insulation State Assessment Method of Power Transformer Based on Health Index[J]. High voltage apparatus, 2024, 60(5): 124-129. DOI： 10.13296/j.1001-1609.hva.2024.05.016.

摘要

为科学合理地评估在运电力变压器的健康水平，根据变压器关键特征信息，建立了由本体数据、在运数据、修正系数构成的三级评估模型。引入健康指数理论，分析了反应变压器绝缘状态的不同关键特征信息的权重，提出了变压器三级评估模型健康水平的计算方法，并在此基础上得出变压器剩余寿命计算公式。最后结合一个实际案例，证明了该方法能科学、准确地评估电网在运电力变压器的绝缘状态，为工程技术人员评估变压器绝缘状态和剩余寿命提供参考。

Abstract

In order to scientifically and reasonably assess the health level of power transformers in operation

a three-level assessment model

which is composed of ontology data

operating data and correction coefficient

is set up in accordance with the key characteristic information of transformer. The theory of health index is introduced to analyze the weight of different key characteristic information reflecting the insulation state of transformer

and the calculation method of health level of transformer three-level assessment model is proposed and

on this basis

the calculation formula of transformer residual life is obtained. Finally

it is proved in combination with an actual case that this method can scientifically and accurately assess the insulation state of power transformer in operation

and provide reference for engineers and technicians to assess the insulation state and residual life of transformer.

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