Parameter Identification of Equivalent T-Circuit of Three Phase Transformers Using Real Time Measurements
Keywords:
transformers, real time monitoring, parameter identification, delta-star connected
Abstract
Transformers are monitored for various purposes such as monitoring losses, stability analysis, and fault prediction. An equivalent circuit model consisting of passive elements is usually used for this aim. Steinmetz's transformer model has the ability to represent well the behavior of transformers at low frequencies. In this study, a new method to obtain the Steinmetz model parameters of a 3-phase transformer under load is presented. In the method, calculations are done by considering each leg of a 3-phase transformer as equivalent to a single-phase transformer. The calculations use the current and voltage of the winding in each leg as input parameters. Equations of the method are given first for single-phase transformer and then for 3-phase transformers with Δ/⅄ and ⅄/⅄ connections. Since it is not possible to measure the winding currents on the delta connected side in practice, a new method to obtain winding currents using line currents is also given in this paper. The validity and accuracy of the method has been demonstrated by the simulation studies carried out in Matlab/Simulink environment.
References
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[15] Dirik, H., Gezegin, C., & Özdemir, M. (2013). A novel parameter identification method for single-phase transformers by using real-time data. IEEE transactions on power delivery, 29(3), 1074-1082.
[16] Gezegin, C., Ozgonenel, O., & Dirik, H. (2020). A Monitoring Method for Average Winding and Hot-Spot Temperatures of Single-Phase, Oil-Immersed Transformers. IEEE Transactions on Power Delivery, 36(5), 3196-3203.
[17] Feyzi, M. R., & Sabahi, M. (2006, August). Online dynamic parameter estimation of transformer equivalent circuit. In 2006 CES/IEEE 5th International Power Electronics and Motion Control Conference (Vol. 2, pp. 1-5). IEEE.
[18] Dobakhshari, A. S., Abdolmaleki, M., Terzija, V., & Azizi, S. (2020). Online non-iterative estimation of transmission line and transformer parameters by SCADA data. IEEE Transactions on Power Systems, 36(3), 2632-2641.
[19] Rezaei, M. R., Hadian-amrei, S. R., & Miveh, M. R. (2022). Online identification of power transformer and transmission line parameters using synchronized voltage and current phasors. Electric Power Systems Research, 203, 107638.
[20] Steinmetz, C. P. (1916). Theory and calculation of alternating current phenomena (Vol. 4). McGraw-Hill Book Company, Incorporated.
[21] Dirik, H., & Özdemir, M. (2014). New extraction method for active, reactive and individual harmonic components from distorted current signal. IET Generation, Transmission & Distribution, 8(11), 1767-1777.
[2] Abdulsalam, S. G., Xu, W., Neves, W. L., & Liu, X. (2005). Estimation of transformer saturation characteristics from inrush current waveforms. IEEE Transactions on Power Delivery, 21(1), 170-177.
[3] Shintemirov, A., Tang, W. H., & Wu, Q. H. (2009). Transformer core parameter identification using frequency response analysis. IEEE Transactions on Magnetics, 46(1), 141-149.
[4] Ćalasan, M., Mujičić, D., Rubežić, V., & Radulović, M. (2019). Estimation of equivalent circuit parameters of single-phase transformer by using chaotic optimization approach. Energies, 12(9), 1697.
[5] Rahimpour, E., & Bigdeli, M. (2009, March). Simplified transient model of transformer based on geometrical dimensions used in power network analysis and fault detection studies. In 2009 International Conference on Power Engineering, Energy and Electrical Drives (pp. 375-380). IEEE.
[6] Kazemi, R., Jazebi, S., Deswal, D., & de Leόn, F. (2016). Estimation of design parameters of single-phase distribution transformers from terminal measurements. IEEE Transactions on Power Delivery, 32(4), 2031-2039.
[7] Bhowmick, D., Manna, M., & Chowdhury, S. K. (2018). Estimation of equivalent circuit parameters of transformer and induction motor from load data. IEEE Transactions on Industry Applications, 54(3), 2784-2791.
[8] Thilagar, S. H., & Rao, G. S. (2002). Parameter estimation of three-winding transformers using genetic algorithm. Engineering Applications of Artificial Intelligence, 15(5), 429-437.
[9] Illias, H. A., Mou, K. J., & Bakar, A. H. A. (2017). Estimation of transformer parameters from nameplate data by imperialist competitive and gravitational search algorithms. Swarm and Evolutionary Computation, 36, 18-26.
[10] Padma, S.; Subramanian, S. Bacterial Foraging Algorithm based Parameter Estimation of Three Winding Transformer. Energy Power Eng. 2011, 3, 135–143.
[11] Yilmaz, Z.; Oksar, M.; Basciftci, F. Multi-Objective Artificial Bee Colony Algorithm to Estimate Transformer Equivalent Circuit Parameters. Period. Eng. Nat. Sci. 2017, 5, 271–277.
[12] Liu, S., Liu, Y., Li, H., & Lin, F. (2016). Diagnosis of transformer winding faults based on FEM simulation and on-site experiments. IEEE Transactions on Dielectrics and Electrical Insulation, 23(6), 3752-3760.
[13] Mitchell, S. D., & Welsh, J. S. (2013). Initial parameter estimates and constraints to support gray box modeling of power transformers. IEEE transactions on power delivery, 28(4), 2411-2418.
[14] Mohamed, R., Markovsky, I., & Lewin, P. L. (2008, October). Modeling and parameter estimation of high voltage transformer using rational transfer function state space approach. In 2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (pp. 467-470). IEEE.
[15] Dirik, H., Gezegin, C., & Özdemir, M. (2013). A novel parameter identification method for single-phase transformers by using real-time data. IEEE transactions on power delivery, 29(3), 1074-1082.
[16] Gezegin, C., Ozgonenel, O., & Dirik, H. (2020). A Monitoring Method for Average Winding and Hot-Spot Temperatures of Single-Phase, Oil-Immersed Transformers. IEEE Transactions on Power Delivery, 36(5), 3196-3203.
[17] Feyzi, M. R., & Sabahi, M. (2006, August). Online dynamic parameter estimation of transformer equivalent circuit. In 2006 CES/IEEE 5th International Power Electronics and Motion Control Conference (Vol. 2, pp. 1-5). IEEE.
[18] Dobakhshari, A. S., Abdolmaleki, M., Terzija, V., & Azizi, S. (2020). Online non-iterative estimation of transmission line and transformer parameters by SCADA data. IEEE Transactions on Power Systems, 36(3), 2632-2641.
[19] Rezaei, M. R., Hadian-amrei, S. R., & Miveh, M. R. (2022). Online identification of power transformer and transmission line parameters using synchronized voltage and current phasors. Electric Power Systems Research, 203, 107638.
[20] Steinmetz, C. P. (1916). Theory and calculation of alternating current phenomena (Vol. 4). McGraw-Hill Book Company, Incorporated.
[21] Dirik, H., & Özdemir, M. (2014). New extraction method for active, reactive and individual harmonic components from distorted current signal. IET Generation, Transmission & Distribution, 8(11), 1767-1777.
Published
2022-12-31
How to Cite
Dirik, H., & Gezegin, C. (2022). Parameter Identification of Equivalent T-Circuit of Three Phase Transformers Using Real Time Measurements. Journal of Engineering Research and Applied Science, 11(2), 2147-2155. Retrieved from http://www.journaleras.com/index.php/jeras/article/view/287
Section
Articles
