Health Condition Assessment Model of Power Transformer Considering Historical Condition

ZHOU Xiu; LIU Weifeng; TIAN Tian; LUO Yan; LI Xiuguang; HE Ninghui; MA Bo; YUN Mingxuan

doi:10.13296/j.1001-1609.hva.2021.02.011

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Health Condition Assessment Model of Power Transformer Considering Historical Condition

更新时间：2025-04-26

- Health Condition Assessment Model of Power Transformer Considering Historical Condition
- High VoltageApparatus Vol. 57, Issue 2, Pages: 70-76(2021)
- 作者机构：
  
  国网宁夏电力有限公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.02.011
  CLC： TM41
- Published：2021
- 稿件说明：
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[1]周秀,刘威峰,田天,罗艳,李秀广,何宁辉,马波,云明轩.考虑历史工况的电力变压器健康状态评估模型[J].高压电器,2021,57(02):70-76.

ZHOU Xiu, LIU Weifeng, TIAN Tian, et al. Health Condition Assessment Model of Power Transformer Considering Historical Condition[J]. High voltageapparatus, 2021, 57(2): 70-76.
[1]周秀,刘威峰,田天,罗艳,李秀广,何宁辉,马波,云明轩.考虑历史工况的电力变压器健康状态评估模型[J].高压电器,2021,57(02):70-76. DOI： 10.13296/j.1001-1609.hva.2021.02.011.

ZHOU Xiu, LIU Weifeng, TIAN Tian, et al. Health Condition Assessment Model of Power Transformer Considering Historical Condition[J]. High voltageapparatus, 2021, 57(2): 70-76. DOI： 10.13296/j.1001-1609.hva.2021.02.011.

摘要

电力变压器结构、运行工况复杂

影响其健康状态的因素众多

建立有效的变压器健康状态评估模型对其状态进行准确评估是十分必要的。文中提出一种考虑变压器历史运行工况影响的变压器健康状态评估模型。从油色谱试验、电气试验、油化试验数据及现场评估等方面提取相关重要指标作为定量指标和定性指标

通过主客观组合权重和岭型隶属函数完成基于定量指标的变压器状态初步评估结果;考虑变压器历史工况建立定性指标对初步评估结果进行合理修正

完成对变压器健康状态的评估。最后以宁夏地区1台110 kV主变验证了该评估方法的有效性和准确性。文中提出的变压器健康状态评估模型可为变压器的智能运维和健康管理提供参考。

Abstract

The structure and operation conditions of power transformer are complex and there are many factors thataffect its health condition.It is necessary to establish an effective evaluation model of transformer health condition toaccurately evaluate its condition.In this paper

a kind of health condition assessment model of transformer consider-ing the influence of historical operating conditions of transformer is proposed. Related important indicators are ex-tracted from such aspects as the oil chromatographic test

electrical test

oil chemical test data and field evaluation asquantitative and qualitative indicators.The preliminary evaluation results of transformer condition based on quantita-tive indicators are completed through subjective and objective combination weight and ridge membership function.The qualitative indicators are established with consideration of historical condition of the transformer to make reason-able correction of the preliminary evaluation result

so to complete the healthy condition evaluation of the transform-er. Finally

the effectiveness and accuracy of the evaluation method is verified by one set of 110 k V main transformerin Ningxia region.The health condition evaluation model of transformer proposed in this paper can provide referencefor intelligent operation and health management of transformer.

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