Computation of Radial Electromagnetic Forces on Power Transformer LV Windings due to Short-Circuit Currents

Han Bo Zheng; Jin Hua Han; Wei Wang; Xiao Gang Li; Yu Quan Li

doi:10.4028/www.scientific.net/AMR.732-733.1069

Paper Titles

Design and Full-Scale Test for Steel Tubular Tower of UHV and EHV Quadruple-Circuit Transmission Line on the same Tower
p.1045

Structural Optimization and Electric Field Analysis on the Insulation Structure of UHDV Wall Bushing
p.1052

A New Method of Fault Phase Identification for High Voltage Transmission Lines Based on the Fault Component of Phase Voltage
p.1056

Damping Analysis of Subsynchronous Oscillation Caused by HVDC
p.1065

Computation of Radial Electromagnetic Forces on Power Transformer LV Windings due to Short-Circuit Currents
p.1069

Design and Full-Scale Test for Cup-Type Steel Tubular Tower of UHV Transmission Line in Heavy Icing Area
p.1074

Research on a New Digital Algorithm to Improve the Monitoring Accuracy of the Dielectric Loss Factor
p.1081

Seismic Performance Analysis of Tower Lines System under Multiple Support Excitation
p.1085

Prototype Test for Confirming the Concept of HTS Magnetically Controlled Saturable Reactor
p.1090

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 732-733Computation of Radial Electromagnetic Forces on...

Computation of Radial Electromagnetic Forces on Power Transformer LV Windings due to Short-Circuit Currents

Abstract:

The short-circuit electromagnetic force in radial direction induces critical mechanical stress on a power transformer. In this paper, the radial short-circuit forces which are exerted on transformer low voltage (LV) windings are investigated. Firstly, the mechanisms of leakage flux and short-circuit electromechanical forces in transformer coils are analyzed. Afterwards, based on IEC standards followed by short-circuit tests, calculations of radial short-circuit forces and evaluations of the ability to withstand short currents in LV windings are developed. The case studies and comparisons with improved measures show that the evaluation and calculation method is feasible and effective, and this method also offers three useful ways to strengthen the ability to withstand short-circuit currents for transformer windings.

You might also be interested in these eBooks

Thermal, Power and Electrical Engineering

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 732-733)

Pages:

1069-1073

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.732-733.1069

Citation:

Cite this paper

Online since:

August 2013

Authors:

Han Bo Zheng*, Jin Hua Han, Wei Wang, Xiao Gang Li, Yu Quan Li

Keywords:

Leakage Flux, Low Voltage Windings, Power Transformer, Radial Direction, Short-Circuit Force

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] J. Singh, Y.R. Sood, R.K. Jarial, and P. Verma: IEEE Elect. Insul. Mag. Vol. 24 (2008), No. 3, p.11–25.

Google Scholar

[2] J. Faiz, B.M. Ebrahimi, and W. Abu-Elhaija, Computation of static and dynamic axial and radial forces on power transformer windings due to inrush and short circuit currents,: Int. Conf. on Applied Electrical Engineering and Computing Technologies, Amman, Jordan, Dec. 6-8, (2011).

DOI: 10.1109/aeect.2011.6132487

Google Scholar

[3] H. Ahn, J. Lee, J. Kim, Y. Oh, S. Jung, and S. Hahn: IEEE Trans. Industry Applications. Vol. 47 (2011), No. 3, p.1267–1271.

Google Scholar

[4] Power Transformers-Part 5: Ability to withstand short circuit, IEC 60076-5: (2006).

Google Scholar

[5] S. Gopalakrishna, K. Kumar, B. George, and V. Jayashankar, Design margin for short circuit withstand capability in large power transformers,: Int. Conf. on Power Engineering, Singapore, Dec. 3-6, (2007).

Google Scholar