Residual Charges on Barrier Surface Revealed by Potential Distribution in a Hybrid Gas-Solid Insulation System

2020 ◽  
Author(s):  
Yilong Wang ◽  
Qiongqiong Li ◽  
Shengwen Shu ◽  
Yuesheng Zheng
Keyword(s):  
Potential Distribution ◽  
Insulation System ◽  
Barrier Surface ◽  
Solid Insulation

Electric Field Distribution Analysis of ±1000kV DC Wall Bushing during Polarity Reversal

2012 ◽  
Vol 229-231 ◽  
pp. 807-810
Author(s):  
Li Zhang ◽  
Qing Min Li ◽  
Li Na Zhang ◽  
Yu Di Cong
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Potential Distribution ◽  
Electric Field Distribution ◽  
Polarity Reversal ◽  
Distribution Analysis ◽  
The Finite Element Method ◽  
Insulation System ◽  
The Moment ◽  
Short Time

±1000kV DC wall bushing under planning is a complex insulation system which bears the effects imposed by different working conditions. The electric field distribution is concentrated at the bushing outlet terminal, which might result in breakdown discharge especially when short-time abrupt conditions such as polarity reversal occur. In this paper, the finite element method is utilized to analyze electric field distribution and potential distribution of wall bushing during polarity reversal. Electric field distribution and potential distribution at the moment of polarity reversal are obtained, which provides value reference for the study of polarity reversal process.

scholarly journals Basic Study for Application of Solid Insulation System to D.C. Superconducting Cable

2003 ◽  
Vol 38 (4) ◽  
pp. 147-151
Author(s):  
Atsushi MINODA ◽  
Yuji MURAMOTO ◽  
Yukio MIZUNO ◽  
Masayuki NAGAO ◽  
Masamitsu KOSAKI
Keyword(s):  
Insulation System ◽  
Basic Study ◽  
Solid Insulation

Deterioration of solid insulation for thermal degradation of transformer oil

2013 ◽  
Vol 3 (2) ◽  
Author(s):  
R. Karthik ◽  
T. Sree Renga Raja ◽  
T. Sudhakar
Keyword(s):  
Thermal Degradation ◽  
Transformer Oil ◽  
Power Transformers ◽  
X Ray Diffraction ◽  
Insulation System ◽  
X Ray ◽  
Atomic Force ◽  
Insulation Systems ◽  
Xrd Techniques ◽  
Solid Insulation

AbstractPower transformers are the most vital components of power system. Insulation used in power transformers are of insulating fluids and solid insulation system like pressboard, Kraft paper. In this work an effort has been made to investigate the detoriation of solid insulation systems for thermal degradation of transformer oil. The aging degree of solid insulation system is examined through Atomic force Microscope (AFM), Scanning Electron Microscope (SEM) and X-ray diffraction (XRD) techniques.

Sign in / Sign up

Export Citation Format

Share Document