Finite Element Modelling of Flux Density Distribution in Three Phase Transformer Under Nonlinear Load Condition

Authors

  • Syafrudin Masri
  • Mohd Nadzri Mamat
  • M M Azizan Azizan

Abstract

For a transformer under linear load operation, the current into the magnetic material core consists of only fundamental component. However under nonlinear load, the current consists of fundamental and harmonic components with certain percentage of harmonic distortion. It changes flux density as the current is no longer sinusoidal. This paper explores the in-similarity of flux density reading of three phase three limb power transformer under linear and nonlinear load conditions. A finite element model is designed and solved using Opera, a Finite Element solver in order to illustrate flux density values under variation of loads. Results of this paper points to the need to make changes towards dimensions of power transformer core in order to avoid potential malfunction.

References

V. A. Ramos Jr, Treating harmonics in electrical distribution systems, Computer Power and Consulting Corporation, 1999.

P. J. A. Ling and C. J. Eldridge, Designing modern electrical systems with transformers that inherently reduce harmonic distortion in a PC-rich environment, Technical Paper. Powersmiths International Corporation.

M. S. Hwang, W. M. Grady and H. W. Sanders, Distribution transformer winding losses due to nonsinusoidal currents, IEEE Transactions on Power Delivery, 2(1), 140–146, 1987.

M. Mehrdad, E. K. Stanek and A. S. Jannati, Influence of voltage and current harmonics on behavior of electric devices, International Journal of Advanced Science and Technology, 75(7), 21–32, 2015.

S. Edwards, D. Bobick and S. Weinzierl, Impact of harmonic current on energy meter calibration, IEEE 2011 EnergyTech, Cleveland, USA, 2011, pp. 1–6.

M. S. Taci and M. H. Sarul, Investigation of a sinusoidal supplied transformer under linear and nonlinear loading condition, TENCON 2008, Hyderabad, India, 2008, pp. 1–6.

S. Masri, A. Mokhzaini and M. Kamarol, Flux distribution at three phase power transformer core under nonlinear load operation, International Review on Modelling and Simulation, 5(2), Part B, 872–878, 2012.

S. G. Abdulsalam, W. Xu, W.L.A. Neves and X. Liu, Estimation of transformer saturation characteristics from inrush current waveforms, IEEE Transactions on Power Delivery, 21(1), 170–177, 2006.

A. E. Fitzgerald, C. Kingsley Jr and S. D. Umans, Electric Machinery International Edition, McGraw Hill.

IEEE recommended practice for establishing transformer capability when supplying nonsinusoidal load currents, ANSI/IEEE C.57.110-Revision 2008.

T. Hoevenaars, K. LeDoux and M. Colosino, Interpreting IEEE STD 519 and meeting its harmonic limits in VFD applications, IEEE Industry Applications Society 50th Annual Petroleum and Chemical Industry Conference, Houston, USA, 2003, pp. 145–150.

J. Faiz, B. M. Ebrahimi and M. Ghofrani, Mixed derating of distribution transformers under unbalanced supply voltage and nonlinear load conditions using TSFEM, IEEE Transactions on Power Delivery, 25(2), 780–789, 2010.

C. Hernandez and M. A. Arjona, Design of distribution transformer based on a knowledge-based system and 2D finite elements, Finite Elements in Analysis and Design, 43(8), 659–665, 2007.

J. A. Rojas and J. R. Varela, Numeric simulation of the magnetic flux in a power transformer, IEEE Transmission and Distribution Conference and Exposition, Caracas, Venezuela, 2006, pp. 1–6.

G. E. Mechler and R. S. Girgis, Magnetic flux distributions in transformer core joints, IEEE Transactions on Power Delivery, 15(1), 198–203, 2000.

T. Noda, H. Nakamoto and S. Yokoyama, Accurate modelling of core-type distribution transformers for electromagnetic transient studies, IEEE Transactions on Power Delivery, 17(4), 969–976, 2002.

M. B. B. Sharifian, J. Faiz, S. A. Fakheri, and A. Zraatparvar, Derating of distribution transformers for non sinusoidal load currents using finite element method, 10th IEEE International Conference on Electronics, Circuits and Systems, Sharjah, United Arab Emirates, 2003, pp. 754–757.

Downloads

Published

24-07-2018

How to Cite

Masri, S., Mamat, M. N., & Azizan, M. M. A. (2018). Finite Element Modelling of Flux Density Distribution in Three Phase Transformer Under Nonlinear Load Condition. Applications of Modelling and Simulation, 2(1), 1–7. Retrieved from https://www.ojs.arqiipubl.com/index.php/AMS_Journal/article/view/11

Issue

Vol. 2 No. 1 (2018)

Section

Articles

License

Authors who publish with this journal agree to the following terms:

Authors hold and retain copyright, and grant the journal right of first publication, with the work after publication simultaneously licensed under a Creative Commons Attribution 4.0 License CC BY that permits any use, reproduction and distribution of the work and article without further permission provided that the original work is properly cited.

Authors are permitted and encouraged to post their work online in institutional repositories, website and other social media before and after publication, as it can lead to productive exchanges, as well as earlier and greater citation of published work.