Characteristics of Bubble Formation in Oil-paper Insulation and Its Influence on the Breakdown

WANG Fochi; CHENG Xiangrui; ZHAO Tao; LIU Yunpeng

doi:10.13296/j.1001-1609.hva.2020.01.010

您当前的位置：

首页 >

文章列表页 >

Characteristics of Bubble Formation in Oil-paper Insulation and Its Influence on the Breakdown

更新时间：2025-04-26

- Characteristics of Bubble Formation in Oil-paper Insulation and Its Influence on the Breakdown
- High VoltageApparatus Vol. 56, Issue 1, Pages: 61-67(2020)
- 作者机构：
  
  1. 华北电力大学河北省输变电设备安全防御重点实验室
  2. 2. 华北电力大学华北电力大学新能源电力系统国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.01.010
  CLC： TM855
- Published：2020
- 稿件说明：
移动端阅览
[1]汪佛池,程祥瑞,赵涛,刘云鹏.油纸绝缘中气泡的生成特性及其对击穿性能的影响[J].高压电器,2020,56(01):61-67.

WANG Fochi, CHENG Xiangrui, ZHAO Tao, et al. Characteristics of Bubble Formation in Oil-paper Insulation and Its Influence on the Breakdown[J]. High voltageapparatus, 2020, 56(1): 61-67.
[1]汪佛池,程祥瑞,赵涛,刘云鹏.油纸绝缘中气泡的生成特性及其对击穿性能的影响[J].高压电器,2020,56(01):61-67. DOI： 10.13296/j.1001-1609.hva.2020.01.010.

WANG Fochi, CHENG Xiangrui, ZHAO Tao, et al. Characteristics of Bubble Formation in Oil-paper Insulation and Its Influence on the Breakdown[J]. High voltageapparatus, 2020, 56(1): 61-67. DOI： 10.13296/j.1001-1609.hva.2020.01.010.

摘要

针对变压器油纸绝缘不同水分含量情况下的气泡生成规律及其对击穿性能的影响展开研究。通过制备2%、4%和6%这3种水分含量的绝缘纸板在快速升温条件下的气泡生成规律

模拟变压器在运行环境下大负荷时油纸绝缘的气泡生成情况。通过交流击穿试验验证了气泡对油纸绝缘的影响。试验结果显示:绝缘纸板的水分含量对生成气泡的起始温度有明显的影响

随着水分含量的增大

生成气泡的起始温度越低

2%、4%和6%这3种水分含量纸板在快速升温过程中的气泡生成起始温度分别为142、120、94℃。存在气泡的油纸绝缘的绝缘失效形式为沿面闪络

厚度为1 mm的油浸纸板

相应闪络距离约47 mm

气泡存在导致绝缘击穿电压下降了28.60%。

Abstract

The presence of bubbles will reduce the electric strength of the transformer insulation

and even lead to insulation breakdown. In this paper

through the preparation of insulating pressboard with different moisture content

the phenomenon of bubbles is observed in the experiment of rapid heating. The test results show that the higher the moisture content of the insulating pressboard

the lower the initial temperature of the bubble formation. Three water content are 2%

4% and 6% of cardboard bubbles generation initial temperature 142 ℃

120 ℃ and 94 ℃ respectively. The influence of bubble on oil-paper insulation is verified through ac breakdown test. With the bubble appearance

the breakdown voltage of the oil-paper insulation is decreased. The insulation failure of the oil-paper insulation of bubble is the surface flashover

the oil-impregnated board with a thickness of 1 mm

the flashover distance is about47 mm

and the breakdown voltage of the bubble is reduced by 28.60%.

关键词

Keywords

references

Views

172

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Influence of Moisture on the Space Charge Characteristics of Multi-layer Oil Impregnated Insulation Paper Under Different DC Electric Field

Quantitative Evaluation Research on Moisture Content and Aging State of Transformer Oil-paper Insulation

Research on Moisture Content and Insulation State of Oil-paper for Transformer Based on Return Voltage Measurement

Study on the Influence of Acids on the Moisture Content Measurement

Transformer Oil-paper Insulation Condition Assessment Based on Frequency Domain Dielectric Spectroscopy and Multi-output Support Vector Regression

Related Author

WU Gaolin

XIE Song

HAO Jian

WANG Qian

FU Jin

CAO Jianjun

SUI Bin

YANG Feibao

Related Institution

Chongqing Electric Power Research Institute

Operation and Maintenance Department,Chongqing Electric Power Company

Yalong River Hydropower Development Company,Ltd.

School of Electrical Engineering, Southwest Jiaotong University

Sichuan Electric Power Design & Consulting Co.,Ltd.

⁰