Coordinate Control Strategy for Current Stabilization in an Aluminum Smelter Including on Load Tap Changer


The performance of the current stabilization control system in an aluminum smelter affects the quality and the quantity of the electrolytic products. This paper elaborates the power supply, in which the diode rectifiers and the self-saturable reactors could keep the series current stable, then describes the basic principle of the rectifier unit control and the series current control. A coordinate strategy is proposed to keep the series current stable, the self-saturable reactors are controlled by a proportional-integral control scheme and the on load tap changers of transformer are triggered by the errors between the setting value of the series voltage and the measured values of the series voltage. Simulation results on PSCAD/EMTDC show that the effectiveness of the proposed strategy to keep the series current stable.

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H. Xu, Q. Xu, Y. Gao and H. Liu, "Coordinate Control Strategy for Current Stabilization in an Aluminum Smelter Including on Load Tap Changer," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 1410-1414. doi: 10.4236/epe.2013.54B267.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] C. P. Arnold, K. S. Turner and J. Arrillaga, “Modelling Rectifier Loads for a Multi-machine Transient Stability Programme,” IEEE Transactions on Power Apparatus and Systems, Vol. PAS-99, No. 1, 1980, pp. 78-85. doi:10.1109/TPAS.1980.319611
[2] A. Molina-Garciá, M. Kessler, M. C. Bueso, J. A. Fuentes, E. Gómez-Lázaro and F. Faura, “Modeling Aluminum Smelter Plants Using Sliced Inverse Regression with a View Towards Load Flexibility,” IEEE Transactions on Power Systems, Vol. 26, No. 1, 2011, pp. 282-293.
[3] A. K. Malaviya and G. A. Bundell, “An Intelligent Controller for Aluminum Smelter Potlines,” IEEE Transactions on Industry Applications, Vol. 37, No. 3, 2001, pp. 792-805. doi:10.1109/28.924761
[4] A. Molina, A. Gabaldon, F. Faura and J. A. Fuentes, “New Approaches to Model Electric Demand in Aluminium Smelter Industry,” Proceedings of the 36th Annual Industry Application Conference, Chicago, 30 September - 4 October 2001, pp. 1426-1431.
[5] F. J. L. Bindon, “Aluminium and Energy,” Power Engineering Journal, Vol. 1, No. 5, 1987, pp. 275-282. doi:10.1049/pe:19870051
[6] D. B. Corbyn, “D.C. Power Control for Aluminium and Electrolytic Loads,” Proceedings of the Institution of Electrical Engineers, Vol. 115, No. 11, 1968, pp. 1693-1704. doi:10.1049/piee.1968.0295
[7] A. P. Agalgaonkar, K. M. Muttaqi and S. Perera, “Response Analysis of Saturable Reactors and Tap Changer in an Aluminium Smelting Plant,” Proceedings of the 3rd International Conference on Power Systems, Kharagpur, India, 2009.
[8] J. L. Aguero, M. Beroqui and S. Achilles, “Aluminum Plant Load Modeling for Stability Studies,” Proceedings of the IEEE Power Engineering Society Summer Meeting, Edmonton, Canada, 18-22 July, 1999, Vol. 2, pp. 1330- 1335.
[9] S. N. Talukdar, J. K. Dickson, R. C. Dugan, M. J. Sprinzen and C. J. Lenda, “On Modeling Transformer and Reactor Saturation Characteristics for Digital and Analog Studies,” IEEE Transactions on Power Apparatus and Systems, Vol. 94, No. 2, 1975, pp. 612-621. doi:10.1109/T-PAS.1975.31889
[10] A. P. Agalgaonkar, K. M. Muttaqi and S. Perera, “Open Loop Response Characterisation of an Aluminium Smelting Plant for Short Time Interval Feeding,” Proceedings of the IEEE Power and Energy Society General Meeting, Calgary, Canada, 26-30 July, 2009.
[11] S. B. Abbott, D. A. Robinson, S. Perera, F. A. Darmann, C. J. Hawley and T. P. Beales, “Simulation of HTS Saturable Core-type FCLs for MV Distribution Systems,” IEEE Transactions on Power Delivery, Vol. 21, No. 2, 2006, pp. 1013-1018. doi:10.1109/TPWRD.2005.859300
[12] K. Grjotheim and B. J. Welch, “Aluminium Smelter Technology – A Pure and Applied Approach,” 2nd Edition, Dusseldorf: Aluminium Verlag, 1987.

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