Electric Field Analysis with Space Charge Effects of ±1000kV DC Wall Bushing

Abstract:

±1000kV DC wall bushing is a complex insulation system working in different conditions, such as DC, AC and polarity reversal. No matter what kind of conditions, the space charge effects on the electric field distribution of the bushing are remarkable. A finite element model for ±1000kV DC wall bushing is established based on space charge theory, to analyze the electric field distribution in different conditions, especially when polarity reversal occurs. The research results provide useful references for the electric field analysis and insulation optimization of UHV (ultra high voltage) DC wall bushings.

• Periodical: Advanced Materials Research (Volumes 1008-1009)
• Pages: 598-602
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1008-1009.598
• Online since: August 2014
• Authors: Shu Min Sun, Yan Cheng, Xin Su
• Keywords: Electric Field, Polarity Reversal, Space Charge, UHV Dc Wall Bushing

References

[1] Z. Badics, Charge density-scalar potential formulation for adaptive time-integration of nonlinear electroquasistatic problems, Vol. 5 (2011), pp.1138-1141.

DOI: 10.1109/cefc.2010.5481390

[2] S. Monga, R. S. Gorur, P. Hansen, W. Massey, Design optimization of high voltage bushing using electric field computations, Vol. 6 (2006), pp.1217-1224.

DOI: 10.1109/tdei.2006.258193

[3] M. Mammeri, C. Laurent, M. Nedjar, Dynamics of voltage polarity reversal as the controlling factor in space-charge induced breakdown of insulating polymers, Vol. 1 (1997), pp.44-51.

DOI: 10.1109/94.590865

[4] IEC62199, Bushings for D. C. application, (2004).