Feature Extraction of PD Spectrum Based on Three-parameter Weibull Model

YAO Weiqiang; SI Wenrong; FU Chenzhao; YAN Nianping; WANG Xiaoming; ZHOU Xiu; WU Xutao; ZHOU Jiawen; LI Qingquan

doi:10.13296/j.1001-1609.hva.2021.08.025

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Feature Extraction of PD Spectrum Based on Three-parameter Weibull Model

更新时间：2025-04-26

- Feature Extraction of PD Spectrum Based on Three-parameter Weibull Model
- High VoltageApparatus Vol. 57, Issue 8, Pages: 184-190(2021)
- 作者机构：
  
  1. 国网上海市电力公司电力科学研究院
  2. 国网江西省电力有限公司
  3. 国网宁夏电力有限公司电力科学研究院
  4. 山东大学电气工程学院特高压输变电技术与装备山东省重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.08.025
  CLC： TM855
- Published：2021
- 稿件说明：
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YAO Weiqiang, SI Wenrong, FU Chenzhao, et al. Feature Extraction of PD Spectrum Based on Three-parameter Weibull Model[J]. High voltageapparatus, 2021, 57(8): 184-190.
DOI：

YAO Weiqiang, SI Wenrong, FU Chenzhao, et al. Feature Extraction of PD Spectrum Based on Three-parameter Weibull Model[J]. High voltageapparatus, 2021, 57(8): 184-190. DOI： 10.13296/j.1001-1609.hva.2021.08.025.

摘要

油纸绝缘是大型变压器的主要绝缘形式

发生在油纸绝缘中的局部放电是绝缘劣化的先兆和表现形式

加强对油纸绝缘中局放的研究有重要意义。威布尔分布参数是局部放电谱图的重要特征参数

在二参数威布尔模型的基础上

提出基于三参数威布尔模型来提取局部放电放电量放电次数谱图中特征参数的方法

并利用灰狼优化算法来求取模型的参数。与二参数模型、三参数模型传统计算方法的计算结果对比表明

灰狼优化算法可以快速准确地求得参数值

求得的模型可以有效反映局部放电放电次数放电量分布谱图的特征。

Abstract

Oil-paper insulation is the main insulation form of large transformers.Partial discharge in oil-paper insulation is the precursor and manifestation of insulation deterioration.Therefore

Intensifying the study of PD in oil-paper insulation is of great significance.Considering that Weibull distribution parameters are important characteristic parameters of PD spectrum

the method to extract the characteristic parameters of PD spectrum of discharge number and magnitude based on three-parameter Weibull model is proposed on the basis of two-parameter Weibull model.The gray wolf optimization algorithm is used to obtain parameters of the model.The gray wolf optimization algorithm

compared with the calculation result of such traditional calculation method as two-parameter model and three-parameter model

can calculate the parameter values quickly and accurately

and the obtained model can effectively reflect the characteristics of spectrum of discharge number and magnitude.

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