Study on Influence of Air Pressure and Humidity on Air Gap Insulation Characteristics

SU Menghan; AN Yunzhu; ZHAO Wenlong; HU Yuanchao; LI Haitao; HUANG Tao

doi:10.13296/j.1001-1609.hva.2024.01.010

您当前的位置：

首页 >

文章列表页 >

Study on Influence of Air Pressure and Humidity on Air Gap Insulation Characteristics

Research & Analysis | 更新时间：2025-04-26

- Study on Influence of Air Pressure and Humidity on Air Gap Insulation Characteristics
- High Voltage Apparatus Vol. 60, Issue 1, Pages: 78-86(2024)
- 作者机构：
  
  1.山东理工大学电气与电子工程学院，山东　淄博　 255000
  2.中国人民解放军空军研究院，北京　 100000
  3.国网江苏省电力工程咨询有限公司，南京　 210000
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51807113);Shandong Provincial Natural Science Foundation of China(ZR2019QEE018)
- DOI：10.13296/j.1001-1609.hva.2024.01.010
  CLC：
- Received：11 September 2023，
  
  Revised：21 November 2023，
  
  Published：16 January 2024
- 稿件说明：
移动端阅览
SU Menghan, AN Yunzhu, ZHAO Wenlong, et al. Study on Influence of Air Pressure and Humidity on Air Gap Insulation Characteristics[J]. High voltage apparatus, 2024, 60(1): 78-86.
DOI：

SU Menghan, AN Yunzhu, ZHAO Wenlong, et al. Study on Influence of Air Pressure and Humidity on Air Gap Insulation Characteristics[J]. High voltage apparatus, 2024, 60(1): 78-86. DOI： 10.13296/j.1001-1609.hva.2024.01.010.

摘要

外界环境条件影响以空气为介质的电力设备外绝缘性能，为了研究空气放电的物理特性，文中基于Boltzmann方程研究空气中电子与分子碰撞的微观过程，计算分析气压、湿度对空气隙绝缘性能的影响规律。结果表明，温度为300 K，气压为1.0 atm（1 atm=101 kPa）时，空气相对湿度的升高会改变电子能量分布函数和电子输运参数。相对湿度每升高30%，电子平均能量下降约0.2 eV，约化电子迁移率下降约0.25×10

（V∙m∙s）

-1

，约化电子扩散系数下降约0.2×10

（m∙s）

-1

，空气相对湿度从0%升高到30%，临界击穿场强升高486 V/cm，空气相对湿度从30%升高到60%，临界击穿场强升高729 V/cm，空气隙绝缘性能增强；温度为300 K，相对湿度为0%时，气压每升高0.2 atm，临界击穿场强升高约6 kV/cm，空气隙绝缘性能增强。

Abstract

The external environmental conditions affect the external insulation performance of power equipment with air as the medium. For studying

the physical characteristics of air discharge

the microscopic process of electron -molecule collision in the air based on the Boltzmann equation is studied in this paper

and the influence of pressure and humidity on the air gap insulation performance is calculated and analyzed. The results show that in case of temperature at 300 K and pressure at 1.0 atm

the increase of relative humidity of air can change the electron energy distribution function and electron transport parameters. When the relative humidity increases 30% ech time

the average electron energy decreases about 0.2 eV

the reduced electron mobility decreases about 0.25×10

(V∙m∙s)

-1

the reduced diffusion coefficient decreases about 0.2×10

(m∙s)

-1

. The relative humidity of air increases from 0% to 30%

the critical breakdown field strength increases 486 V/cm

the relative humidity of air increases from 30% to 60%

the critical breakdown field strength increases 729 V/cm

and the air gap insulation performance increases. While

in case of temperature at 300 K and relative humidity at 0%

when the air pressure increases 0.2 atm each time

the critical breakdown field strength increases about 6 kV/cm and the air gap insulation performance increases.

关键词

Keywords

references

Views

121

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Influences of the Humidity and the Pressure on Air Discharge

Research on the Calculation of Critical Breakdown Field Strength of High Temperature Gas Mixtures

Study on Dielectric Breakdown Properties of Hot C₅F₁₀O/CO₂ Gas Mixture

Research on Humidity Correction of DC Disruptive Voltage for External Insulation in High Latitude Areas

INFLUENCE OF AMBIENT TEMPERATURE ON HUMIDITY IN SF₆

Related Author

顾乐观

杨力

孙才新

唐炬

LI Shixin

LI Lei

XU Jianyuan

CUI Zhaoxuan

Related Institution

重庆大学

Nuclear and Radiation Safety Center

School of Electric Engineering, Shenyang University of Technology

西安高压电器研究所

Quanzhou Electric Power Bureau

⁰