Study on Pores Inhomogeneity Problem of Polyurethane Foam Filled in Perfusion Post Insulator

GUAN Xiyuan; MEI Hongwei; HU Wei; LIU Jianben; YI Yong; WANG Liming

doi:10.13296/j.1001-1609.hva.2020.12.021

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Study on Pores Inhomogeneity Problem of Polyurethane Foam Filled in Perfusion Post Insulator

更新时间：2025-04-26

- Study on Pores Inhomogeneity Problem of Polyurethane Foam Filled in Perfusion Post Insulator
- High VoltageApparatus Vol. 56, Issue 12, Pages: 156-163(2020)
- 作者机构：
  
  1. 清华大学深圳研究生院
  2. 中国电力科学研究院有限公司武汉分院电网环境保护国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.12.021
  CLC： TM216;TM855
- Published：2020
- 稿件说明：
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[1]管兮远,梅红伟,胡伟,刘健犇,怡勇,王黎明.灌注式支柱绝缘子内部聚氨酯材料孔泡不均匀性问题研究[J].高压电器,2020,56(12):156-163.

GUAN Xiyuan, MEI Hongwei, HU Wei, et al. Study on Pores Inhomogeneity Problem of Polyurethane Foam Filled in Perfusion Post Insulator[J]. High voltageapparatus, 2020, 56(12): 156-163.
[1]管兮远,梅红伟,胡伟,刘健犇,怡勇,王黎明.灌注式支柱绝缘子内部聚氨酯材料孔泡不均匀性问题研究[J].高压电器,2020,56(12):156-163. DOI： 10.13296/j.1001-1609.hva.2020.12.021.

GUAN Xiyuan, MEI Hongwei, HU Wei, et al. Study on Pores Inhomogeneity Problem of Polyurethane Foam Filled in Perfusion Post Insulator[J]. High voltageapparatus, 2020, 56(12): 156-163. DOI： 10.13296/j.1001-1609.hva.2020.12.021.

摘要

灌注式支柱绝缘子内部填充材料聚氨酯孔泡不均匀可能会引起局部放电现象

国内外尚未对此做过详细研究。文中针对此类问题进行深入探究

首先深入观察了聚氨酯材料的孔泡结构

从孔泡不均匀性的角度研究了聚氨酯的材料特性;其次根据孔泡分布规律

给出了评估灌注式支柱绝缘子内部聚氨酯材料孔泡不均匀性的方法;最后

结合局部放电试验研究了孔泡不均匀性及孔径大小对其电气特性的影响。研究提出了一种基于压汞法的孔泡不均匀性评估方法

分析得出灌注式支柱绝缘子内部聚氨酯孔泡分布与偏心距有关

过量的反应物会使这种孔泡分布趋势增大

且会使聚氨酯材料局部放电量变大。

Abstract

The pores inhomogeneity of polyurethane foam filled in perfusion post insulator may cause partial discharge.No detailed studies have been made on the inhomogeneity of polyurethane foam at home and abroad.In this paper

the pore structure of polyurethane materials was observed in depth.The material properties of the polyurethane are analyzed from the perspective of the non-uniformity of the pores.Then

according to the distribution of the pores

the new method of evaluating the inhomogeneity of polyurethane foam in perfusion post insulator is given.The effect of the inhomogeneity of polyurethane foam and the size of pore on the electrical properties are investigated by partial discharge experiment.A new evaluating method of pores inhomogeneity is presented.It is concluded that the distribution of polyurethane foam is related to eccentric distance.Excess reactants will make this trend more obvious and increase the partial discharge of polyurethane materials.

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