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## Investigation of Stray Losses in Converter Transformer Using Parametric Analysis of Wall Shunt Thickness | ||

Journal of Operation and Automation in Power Engineering | ||

دوره 11، شماره 4، اسفند 2023، صفحه 240-248 اصل مقاله (1.48 M) | ||

نوع مقاله: Research paper | ||

شناسه دیجیتال (DOI): 10.22098/joape.2023.9696.1676 | ||

نویسندگان | ||

J.U. Kothavade ^{} ؛ P. Kundu
| ||

^{}Department of Electrical Engineering, SVNIT, Surat, Gujarat, India | ||

چکیده | ||

In High Voltage Direct Current Transmission (HVDC) system, converter transformer is an integral part of the system. Generally, core loss, copper loss and stray losses occur in the transformer. In which stray losses are produced in the transformers metallic parts such as transformer tank which can be 10\% to 15\% of the total loss. Experimentally, stray losses are difficult to measure. So, it is essential to use numerical modelling to predict the stray loss. The secondary winding of the converter transformer is directly linked to the rectifier or inverter. As a result, the converter transformer winding's current is non-sinusoidal. Due to non-sinusoidal current, losses are more in converter transformer than in~the power transformer. This article analyses the stray loss reduction techniques by applying wall shunt on the transformer tank surface. These stray losses are estimated for different wall shunt thickness values by varying the thickness of wall shunt using parametric analysis in 3-D finite-element analysis (FEA). Two types of wall shunts is used:-horizontal and vertical. In which horizontal wall shunt results are compared with the vertical wall shunt for non-sinusoidal and sinusoidal current excitation, where sinusoidal excitation is a fundamental component of non-sinusoidal excitation. For a case study, 315 MVA converter transformer is used to estimate stray losses on this transformer. The results obtained by the numerical method are also compared with the analytical method. Result shows that the stray losses are decreased with an increase in wall shunt thickness. Also, these losses are less for sinusoidal excitation than the non-sinusoidal excitation. | ||

کلیدواژهها | ||

Parametric Analysis؛ Converter Transformer؛ stray loss؛ non-sinusoidal excitation؛ horizontal wall shunt؛ sinusoidal excitation؛ vertical wall shunt | ||

مراجع | ||

- M. Elsayed, A. M. Shaheen, M. M. Alharthi, S. S. Ghoneim, and R. A. El-Sehiemy, "Adequate Operation of Hybrid AC/MT-HVDC Power Systems Using an Improved Multi-Objective Marine Predators Optimizer,"
*IEEE Access*, vol. 9, pp. 51065–51087, 2021. - Mirzaei, "Investigating the Practical Applications of the Frequency Response of the Transformers Extracted Using the Lightning Impulse Test Results,"
*J. Oper. Automa. Power Eng.*, vol. 10, pp. 206–213, 2022. - Moravej and S. Bagheri, "Condition monitoring techniques of power transformers: A review,"
*J. Oper. Automa. power Eng.*, vol. 3, pp. 71–82, 2015. - Wang, J. Yang, X. Cao, M. Xu, and J. Lv, "The electric tests of ordinate insulation in converter transformer by the method of applying voltage on single-phase,"
*7*, pp. 1170–1173, 2003.^{th }Int. Conf. Properties Applic. Dielectric Materials (Cat. No. 03CH37417) - F. de Oliveira, N. Sadowski, and S. H. L. Cabral, "Alternative model for computing transformer tank induced losses in the time domain,"
*IET Electric Power Applica.*, vol. 14, pp. 2507–2514, 2020. - Vasilija, "FEM 2D and 3D design of transformer for core losses computation,"
*Machines. Technologies. Materials*, 2017, pp. 345–348. - N. Hamoodi, B. A. Hammad, and F. S. Abdullah, "Experimental simulation analysis for single phase transformer tests,"
*Majlesi J. Electri. Eng.*, vol. 14, pp. 91–95, 2020. - Dughiero and M. Forzan, "Transient magnetic fem analysis for the prediction of electrodynamic forces in transformers with magnetic shunts,"
*IEEE Int. Magnetics Conf. (INTERMAG)*, p. EV5, 2002. - Mikhak-Beyranvand, J. Faiz, and B. Rezaeealam, "Thermal analysis and derating of a power transformer with harmonic loads,"
*IET Gener. Transm. Distrib.*, vol. 14, pp. 1233–1241, 2020. - Torkaman and V. Naeini, "Recognition and Location of Power Transformer Turn to Turn Fault by Analysis of Winding Imposed Forces,"
*J. Oper. Autom. Power Eng.*, vol. 7, pp. 227–234, 2019. - Djurovic and J. Monson, "3-dimensional computation of the effect of the horizontal magnetic shunt on transformer leakage fields,"
*IEEE Trans. Magnetics*, vol. 13, pp. 1137– 1139, 1977. - Di Pasquale, G. Antonini, and A. Orlandi, "Shielding effectiveness for a three-phase transformer at various harmonic frequencies,"
*IET scie. measur.*& technology, vol. 3, pp. 175–183, 2009. - Wang, Q. Yang, Y. Li, J. Wang, and D. Tian, "Numerical Analysis of the Effect of Magnetic Shielding on Stray Losses in Adjacent Parts of Power Transformer Ascending Flange,"
*IEEE Int. Conf. Applied Superconductivity Electromag. Devi. (ASEMD)*, pp. 1–2, 2020. - J. Arand and K. Abbaszadeh, "The study of magnetic flux shunts effects on the leakage reactance of transformers via FEM,"
*Majlesi J. Electri. Eng.*, vol. 4, pp. 47–52, 2010. - Behjat, A. Shams, and V. Tamjidi, "Characterization of power transformer electromagnetic forces affected by winding faults,"
*J. Oper. Autom. Power Eng*., vol. 6, pp. 40-49, 2018. - Yongbin, Y. Junyou, Y. Hainian, and T. Renyuan, "Study on eddy current losses and shielding measures in large power transformers,"
*IEEE trans. magnetics*, vol. 30, pp. 3068–3071, 1994. - A. Tsili, A. G. Kladas, P. S. Georgilakis, A. T. Souflaris, and D. G. Paparigas, "Geometry optimization of magnetic shunts in power transformers based on a particular hybrid finite-element boundary-element model and sensitivity analysis,"
*IEEE trans. magnetics*, vol. 41, pp. 1776–1779, 2005. - Song, Y. Wang, S. Mou, Z. Wu, Y. Zhu, B. Xiang, et al., "The edge effects of magnetic shunts for a transformer tank,"
*Int. Conf. Electri. Machines Syst.*, 2011, pp. 1–4. - Sawhney and A. Chakrabarti, "Electrical machine design,"
*DhanpatRai and Co.*, 2006. - Dasgupta, Power transformers quality assurance: New Age International, 2009.
- W. Kimbark, Direct current transmission vol. 1: Wiley, 1971.
- V. Kulkarni and S. Khaparde, Transformer engineering: design and practice,
*CRC press*, vol. 25, 2004. - Committee, "Transformers," 2003.
- U. Kothavade and P. Kundu, "Investigation Of Electromagnetic Forces In Converter Transformer,"
*IEEE 2*, 2021, pp. 1–6.^{nd }Int. Conf. Smart Techno. Power, Energy Contr. (STPEC) - Li, W. N. Fu, S. L. Ho, S. Niu, and Y. Li, "Numerical analysis and optimization of lobe-type magnetic shielding in a 334 MVA single-phase auto-transformer,"
*IEEE Trans. Magnetics*, vol. 50, pp. 1–4, 2014. - Al-Dori, B. S¸akar, and A. Dönük, "Comprehensive Analysis of Losses and Leakage Reactance of Distribution Transformers,"
*Arabian J. Scie. Eng*., pp. 1–9, 2022. - Hernandez, M. Arjona, and J. Sturgess, "Optimal placement of a wall-tank magnetic shunt in a transformer using FE models and a stochastic-deterministic approach,"
*12*, pp. 468–468, 2006.^{th }Biennial IEEE Conf. Electromag. Field Comput. - Djurovic and J. Monson, "Stray losses in the step of a transformer yoke with a horizontal magnetic shunt,"
*IEEE Trans. Power Apparatus Syst.*, pp. 2995–3000, 1982. - Song, Y. Wang, S. Mou, Z. Wu, Y. Zhu, B. Xiang, et al., "Tank losses and magnetic shunts in a three phase power transformer,"
*Int. Conf. Elec. Machines Syst*., 2011, pp. 1–4. - Xiao, C. Dezhi, and B. Baodong, "Study of Loss and Temperature Considering Different Shielding Structure in Power Transformer,"
*IEEE Int. Magnetic Conf. (INTERMAG)*, pp. 1–5, 2021. - -H. Park, H.-J. Lee, and S.-C. Hahn, "Finite-Element Modeling and Experimental Verification of Stray-Loss Reduction in Power Transformer Tank With Wall Shunt,"
*IEEE Trans. Magnetics*, vol. 55, pp. 1–4, 2019. - Moghaddami, A. I. Sarwat, and F. De Leon, "Reduction of stray loss in power transformers using horizontal magnetic wall shunts,"
*IEEE Trans. magnetics*, vol. 53, pp. 1–7, 2016. - Susnjic, Z. Haznadar, and Z. Valkovic, "3D finite-element determination of stray losses in power transformer,"
*Elec. Power Syst. Research*, vol. 78, pp. 1814–1818, 2008. - S. Matthew, Elements of electromagnetics:
*Oxford University Press*, 2015. - E. Zirka, Y. I. Moroz, N. Chiesa, R. G. Harrison, and H. K. Høidalen, "Implementation of inverse hysteresis model into EMTP—Part I: Static model,"
*IEEE Trans. Power Deliv.*, vol. 30, pp. 2224–2232, 2015.
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