Abstract
This article presents the results of testing two parallel operating three-phase power transformers with different transformation factors. The practical operation of power engineering systems often makes it necessary to split up the substation transformer capacity, which usually requires installing two parallel transformers instead of one, though with the same total power. The problem arises from this replacement of how to ensure uniform load distribution between the transformers. In the case of similarly designed transformers of equal power uniform load distribution is ensured automatically due to symmetrical parallel circuits. However, if differently designed transformers with different transformation factors are enabled in parallel, the uniformity of load distribution between them will be violated. It has been proven by testing that, with increasing total load, parallel operating transformers with very different transformation factors decrease the consumption of current by windings of the transformer with a higher transformation factor.
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Romodin, A.V. and Kuznetsov, M.I., Experimental study of control of active power flow in system with two power-supply devices, Russ. Electr. Eng., 2010, vol. 81, no. 6, p. 317.
Romodin, A.V., Kuznetsov, M.I., and Kostygov, A.M., Experimental investigation of controlling reactive power flow in an electrical power system with a threewinding transformer, Russ. Electr. Eng., 2011, vol. 82, no. 11, p. 618.
Romodin, A.V. and Kuznetsov, M.I., Transformation of reactive power in a three-circuit transformer with capacitive compensation, Russ. Electr. Eng., 2013, vol. 84, no. 11, p. 595.
Romodin, A.V. and Kuznetsov, M.I., A way to start an induction motor during a change in the voltage phase on one of two stator windings, Russ. Electr. Eng., 2015, vol. 86, no. 6, p. 339.
Romodin, A.V. and Kuznetsov, M.I., Energy transformation of active power in a three-winding transformer, Russ. Electr. Eng., 2012, vol. 83, no. 11, p. 587.
Romodin, A.V., Kuznetsov, M.I., and Kostygov, A.M., Operation modes of three-winding transformer with different-phases electrical systems, Vestn. Permsk. Nats. Issl. Politekhn. Univ. Elektrotekhn., Inf. Tekhnol., Sist. Upr., 2009, no. 3.
Petrochenkov, A.B., Romodin, A.V., and Khoroshev, N.I., On one formalized method for estimating the managerial decisions. By the example of electrical objects control, Nauch.-Tekhn. Vedomosti St. Petersburg. Gos. Politekhn. Univ., 2009, no. 87.
Petrochenkov, A.B. and Romodin, A.V., Energy-optimizer complex, Russ. Electr. Eng., 2010, vol. 81, no. 6, p. 323.
Kavalerov, B.V. and Romodin, A.V., Mini-electric power stations on the base of converted aviation engines: problems on controlling and testing the automated control system of gas turbine power plant, Vestn. Severo-Vostochn. Federal. Univ. im. M.K. Amosova, 2011, vol. 8, no. 3.
Petrochenkov, A.B. and Romodin, A.V., Ways for developing “Energooptimizator” complex, Elektro. Elektrotekhn., Elektroenerget., Elektrotekhn. Prom., 2013, no. 4.
Romodin, A.V. and Leizgol’d, D.Yu., A model of situation control system for flexible electric power lines operating under normal conditions, Sovr. Probl. Nauki Obrz., 2013, no. 6. http://www.science-education. ru/113-11670
Petrochenkov, A.B., Frank, T., Romodin, A.V., and Kychkin, A.V., Hardware-in-the-loop simulation of an active-adaptive power grid, Russ. Electr. Eng., 2013, vol. 84, no. 11, p. 652.
Gol’berg, O.D. and Khelemskaya, S.P., Elektromekhanika (Electromechanics), Moscow: Akademiya, 2007.
Kostenko, M.P. and Piotrovskii, L.M., Elektricheskie mashiny (Electrical Machines), part 1: Mashiny postoyannogo toka i transformatory (DC Electrical Machines and Transformers), Moscow: Gosenergoizdat, 1958.
Vol’dek, A.I. and Popov, V.V., Elektricheskie mashiny. Vvedenie v elektromekhaniku. Mashiny postoyannogo toka i transformatory: Uchebnik dlya vuzov (Electrical Machines. Introduction to Electromechanics. DC Electrical Machines and Transformers. Student’s Book for Universities), St. Petersburg: Piter, 2008.
Kalantarov, P.L. and Neiman, L.R., Teoreticheskie osnovy elektrotekhniki (Theoretical Foundations of Electrical Engineering), Leningrad, Moscow: Gosenergoizdat, 1948.
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Original Russian Text © A.V. Romodin, M.I. Kuznetsov, 2016, published in Elektrotekhnika, 2016, No. 11, pp. 16–21.
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Romodin, A.V., Kuznetsov, M.I. A test of parallel operating three-phase transformers with different transformation factrs. Russ. Electr. Engin. 87, 601–606 (2016). https://doi.org/10.3103/S1068371216110092
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DOI: https://doi.org/10.3103/S1068371216110092