Comparison of Operational Losses under Rated and Nonlinear Loads for 2 kVA Three-Phase Three Legged Dry Type Power Transformer

Abstract:

This paper produces experimental results comparing operational loss of a power transformer under rated and nonlinear load. A 2kVA three phase three legged dry type power transformer is primarily designed for rated loss; however it is operated with a nonlinear load. Three phase rectifier with variable capacitors is the selected current harmonic source and the distortion at current waveform is controlled by the capacitance values. Initially the operation losses under rated load is measured and then followed with measurement with nonlinear load. At the end of this paper, both type of operation losses is compared and differentiated.

• Periodical: Applied Mechanics and Materials (Volume 793)
• Pages: 309-314
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.793.309
• Online since: September 2015
• Authors: Muhammad Mokhzaini Azizan*, Baharuddin Ismail, Syafrudin Masri, Mohd Saufi Ahmad, Mohd Annuar Mohd Isa, Mohd Asri Jusoh
• Keywords: Current Harmonics, Nonlinear Load, Power Quality, Power Transformer, Total Harmonic Distortion

References

[1] Goethe, P. K. & Goethe, W. D., (1999).

[2] IEEE Recommended Practice for Establishing Liquid-Filled and Dry-Type Power and Distribution Transformer Capability When Supplying Nonsinusoidal Load Currents - Redline. IEEE Std C57. 110-2008 (Revision of IEEE Std C57. 110-1998) - Redline.

DOI: 10.1109/ieeestd.2008.4601586

[3] Driesen, J., Belmans, R. & Hameyer, K., (2000).

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

DOI: 10.1109/tpwrd.2002.803700

[5] Hwang, M. S., Grady, W. M. & Sanders, H. W., (1987) Distribution Transformer Winding Losses Due to Nonsinusoidal Currents. Power Engineering Review, IEEE, PER-7, 46-46.

DOI: 10.1109/mper.1987.5527312

[6] Rama Rao, D. K. S., (2003).

[7] Jr, L. H. D. (1988) Eddy Current Losses in Transformer Windings and Circuit Wiring. Unitrode Seminar Manual SEM600.

[8] Pierce, L. W., (1996) Transformer design and application considerations for nonsinusoidal load currents. Industry Applications, IEEE Transactions on, 32, 633-645.

DOI: 10.1109/28.502176

[9] Delaiba, A. C., de Oliveira, J. C., Vilaca, A. L. A. & Cardoso, J. R., (1995).

[10] INTERNATIONAL. STANDARD. IEC. 60076-11.

[11] Taci, M. S. & Sarul, M. H., (2008) Investigation of a sinusoidaly supplied transformer under linear and non-linear loading conditions. In: TENCON 2008 - 2008 IEEE Region 10 Conference, 19-21 Nov. 2008, 1-6.

DOI: 10.1109/tencon.2008.4766464

[12] Klontz, K. W., (1995).

[13] Ahmed, E., Xu, W. & Liu, X., (2001) Application of modal transformations for power system harmonic impedance measurement. International Journal of Electrical Power & Energy Systems, 23, 147-154.

DOI: 10.1016/s0142-0615(00)00041-7

[14] S. Masri & P.W. Chan, (2011) Determination of Transformer Rating Based on Total Harmonic Distortion Under Balanced Conditions. Journal of Engineering Science, 7, 51-61.

[15] Daut, I., Hasan, S., Taib, S., Chan, R. & Irwanto, M., (2010) Harmonic content as the indicator of transformer core saturation. In: Power Engineering and Optimization Conference (PEOCO), 2010 4th International, 23-24 June 2010, 382-385.

DOI: 10.1109/peoco.2010.5559192

[16] Tran-Quoc, T. & Pierrat, L., (1997) Correction of the measured core losses under distorted flux [power transformers]. Magnetics, IEEE Transactions on, 33, 2045-(2048).

DOI: 10.1109/20.582714

[17] Emanuel, A. E. & Xiaoming, W., (1985) Estimation of Loss of Life of Power Transformers Supplying Nonlinear Loads. Power Apparatus and Systems, IEEE Transactions on, PAS-104, 628-636.

DOI: 10.1109/tpas.1985.318998

[18] Delaiba, A. C., de Oliveira, J. C., Vilaca, A. L. A. & Cardoso, J. R., (1995).

[19] Barnes, P. R., Dyke, J. W. V., McConnell, B. W. & S. Das, (1996) Determination Analysis of Energy Conservation Standards for Distribution Transformers. p. ORNL-6847.

DOI: 10.2172/405744

[20] Temperature Rise, (1998) Application Note. Controlled Power Company.

[21] Sanjay A. Deokar, L. M. Waghmare, Analysis of Impact of harmonics on power system devices in distribution system and its remedial measures, " Proc. of Elsevier, Energy Procedia, Nov-Dec. 2011, 2nd International conference on , Advances in Energy Engineering (ICAEE-2011).

DOI: 10.1109/icectech.2011.5941817

[22] INTERNATIONAL STANDARD IEC/EN 61558-1-2.