Temperature Gradient Effect on Distortion of DC Electrical Field in Polyethylene

您当前的位置：

首页 >

文章列表页 >

Temperature Gradient Effect on Distortion of DC Electrical Field in Polyethylene

更新时间：2025-07-09

- Temperature Gradient Effect on Distortion of DC Electrical Field in Polyethylene
- Vol. 44, Issue 4, Pages: 62-65+124(2010)
- 作者机构：
  
  西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM215.1
- Online First：10 April 2010，
  
  Published：2010
- 稿件说明：
移动端阅览
Temperature Gradient Effect on Distortion of DC Electrical Field in Polyethylene[J]. 2010, 44(4): 62-65+124.
DOI：

Temperature Gradient Effect on Distortion of DC Electrical Field in Polyethylene[J]. 2010, 44(4): 62-65+124. DOI：

摘要

针对直流电缆内外温差与直流电场共同作用下会影响绝缘材料内部空间电荷分布和电场分布的问题

利用自行研制的温度梯度下的空间电荷测量装置

通过设定不同的上、下电极温度

实现试样上、下表面的不同温差

然后采用阶梯升压方式(10、30、50、70 MV/m)

测量在不同温度差(ΔT为0～40 ℃)下聚乙烯中的电场分布

最后得出了温度差和电场分布的关系.结果表明:温度差越大

外施场强越高

试样体内低温侧场强畸变越严重; 由于高场强下电极上同极性电荷的注入

加压时间的增加对畸变场强有一定的缓和作用.

Abstract

Space charge profiles and stress distributions in cable bulk are strongly affected by high voltage direct current(HVDC)voltage

especially with the cooperation of the temperature difference between inner and outer insulations. A modified space charge measurement system suitable for temperature gradient was designed to fulfill the temperature difference via changing the upper and lower electrode temperature. Then space charge profiles and stress distributions in low density polyethylene(LDPE)were measured under different temperature differences(from 0 ℃ to 40 ℃)

as applied DC stresses of 10

and 70 MV/m

respectively. The relationship between temperature difference and stress distribution was obtained. The test results show that the increasing temperature difference and applied stress results in a more distorted stress at the low temperature site of sample. And due to the injection of homo-charges from the electrode under high electrical stress

the distorted stress is reduced with the increasing poling time.

关键词

Keywords

references

张乒. 直流电缆绝缘设计[J]. 高电压技术, 2004, 30(8): 20-21, 24.

ZHANG Ping. Design on the insulation of the DC cable[J]. High Voltage Engineering, 2004, 30(8): 20-21, 24.

LE G C, BLAISE G. Breakdown phenomena related to trapping/detrapping processes in wide band gap insulator[J]. IEEE Trans on EI, 1992, 27(3):472-481.

郑飞虎,张冶文,宫斌,等.低密度聚乙烯中空间电荷包的形成与迁移过程[J].中国科学:E辑, 2005, 35(7): 701-707.

LIM F N, FLEMING R J. The temperature dependence of space charge accumulation and DC current in XLPE power cable insulation[C]∥1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena. Piscataway, NJ, USA: IEEE, 1999: 66-69.

CHOO W, CHEN G. Electric field determination in DC polymeric power cable in the presence of space charge and temperature gradient under dc conditions[C]//2008 International Conference on Condition Monitoring and Diagnosis. Piscataway, NJ, USA: IEEE, 2008:321-324.

FU M, DISSADO LA, CHEN G, et al. Space charge formation and its modified electric field under applied voltage reversal and temperature gradient in XLPE cable[J]. IEEE Trans on DEI, 2008, 15(3): 851-860.

FABIANI D, MONTANARI G C, LAURENT C, et al. HVDC cable design and space charge accumulation:part 3[J]. IEEE Electrical Insulation Magazine, 2008, 24(2): 5-14.

高田达雄. 电声脉冲法测量空间电荷的原理和方法[M]. 西安:西安交通大学出版社, 1994.

IEDA M. CARRIER injection, space charge and electrical breakdown in insulating polymers[J]. IEEE Trans on EI, 1987, 22(3): 261-267.

ABOU-DAKKA M, BULINSKI A, BAMJI S. Space charge development and breakdown in XLPE under DC field[J]. IEEE Trans on DEI, 2004, 11(1): 41-48.

MONTANARI G C, DAS-GUPTA D K. Polarization and space charge behavior of unaged and electrically aged across-linked polyethylene[J]. IEEE Trans on DEI, 2000, 7(4): 474-479.

一种非对称双原子分子的电子位移极化率计算模型.西安交通大学学报,2009,43(4):90-94.

水分对变压器绝缘纸性能影响的分子动力学模拟.西安交通大学学报,2009,43(4):111-115.

一种可用于绝缘子沿面放电状态识别的算法.西安交通大学学报,2008,42(10):1269-1274.

环氧及其复合材料气固界面快脉冲闪络特性.西安交通大学学报,2008,42(6):703-707.

改进粒子群算法及其在超导电缆参数优化中的应用.西安交通大学学报,2007,41(2):219-222.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of Voltage Reverse Time on Space Charge and Transient Field in Polyethylene

Insulating Property Enhancement of Polyethylene Blends by Voltage Stabili-ers

Numerical Simulation of Space Charge Distribution Characteristics of Polyimide Materials under X-Ray Irradiation

Space Charge and Conductance Characteristics of Polypropylene/Polyolefin Elastomer Composites

Integrated and Joint Design Optimization of Centrifugal Compressor Impeller and Casing Treatment at Multiple Working Points

Related Author

彭宗仁

成永红

周浩 1

陈向荣 1

玉林威 1

刘海燕 2

戴超 1

魏作君 2

Related Institution

State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University

Zhejiang Provincial Key Laboratory of Electrical Machine Systems, Zhejiang University

Institute of Electronic Engineering，China Academy of Engineering Physics

Northwest Institute of Nuclear Technology

School of Electrical Engineering，Xi’an Jiaotong University

⁰