The system of balancing electromagnetic parameters at single-phase variable load

The article considers the way of eliminating a voltage unbalance in electrical networks. A review of means to address the current unbalance, which are widely used nowadays, is presented. Their advantages and disadvantages are described. It is proposed to use a balancing device with an inductive energy storage unit designed with due regard to controllable power exchange between the network and the reactor using a three-phase bridge converter. A diagram of the balancing device is constructed and the principles of its functioning are described. The authors develop a method of generating currents of direct and reverse sequences on the basis of the specified unbalanced load current with the package MATLAB. They also design the reactive power source on the basis of an inductive storage element allowing the reactive power unbalance to be introduced into the power system in order to compensate the reactive power of the reverse sequence. An effective balancing device is obtained using the bridge converter with an inductive storage element at the output.

References

[1] Tserazov A.L., Yakimenko N.I. Issledovanie vliyaniy nesimmetrii i nesinusoidal’nosti napryazheniya na rabotu asinkhronnykh dvigateley [Investigation of Voltage Unbalance and Unsinusoidality Influence on Asynchronous Motor Operation]. Moscow, Gosenergoizdat Publ., 1963. 120 p.

[2] Man’kin E.A. The Eddy Current Loss in the Transformer Windings at Nonsinusoidal Current. Elektrichestvo [Electricity], 1955, no. 12, pp. 48-52.

[3] Standard RF. GOST R 54149-2010. Normy kachestva elektricheskoy energii v sistemakh elektrosnabzheniya obshchego naznacheniya [State Standard R 541492010. Quality Standards for General Purpose Electric Power Supply Systems]. Moscow, Standartinform Publ., 2010.

[4] Standard RF SP 31-110-2003. Proektirovanie i montazh elektroustanovok zhilykh i obshchestvennykh zdaniy [Design and Wiring Electrical Installations of Residential and Public Buildings]. Moscow, Gosstroy Rossii Publ., 2004.

[5] Al’tgauzen A.P., Bershitskiy I.M., Smelyanskiy M.Ya. Elektrooborudovanie i avtomatika elektrotermicheskikh ustanovok: spravochnik [Electrical and Automatic Equipment of Electroheat Installation: Handbook]. Moscow, Energiya Publ., 1978. 360 p.

[6] Shidlovskiy A.K., Kuznetsov V.G., Nikolaenko V.G. Optimizatsiya nesimmetrichnykh rezhimov sistem elektrosnabzheniya [Optimization of Out-of-Balance Conditions of Power Supply Systems]. Kiev, Nauk. Dumka Publ., 1987.

[7] Acha E., Ambriz-Perez H., Claudio R. Fuerte-Esquivel. Advanced SVCModels for Newton-Raphson Load Flowand Newton Optimal Power Flow Studies. IEEE Transactionson Power Systems, 2000, no. 15, pp. 129-136.

[8] Bessonov L.A. Teoreticheskie osnovy elektrotekhniki [Principal Theory of Electrical Engineering]. Moscow, Gardariki Publ., 2007. 317 p.

[9] Chernykh I.V. Modelirovanie elektrotekhnicheskikh ustroystv v MATLAB, SimPowerSystems i Simulink [Simulation of Electrical Devices in MATLAB, SimPowerSystems and Simulink]. Moscow, DMK Press Publ.; St.Petersburg, Piter Publ., 2008. 288 p.

[10] Kalabekov A.A. Mikroprotsessory i ikh primenenie v sistemakh peredachi i obrabotki signalov [Microprocessors and Their Application in Signal Transmitting and Processing Systems]. Moscow, Radio i svyaz’ Publ., 1988. 278 p.

[11] Sidorov S.A., Roginskaya L.E. Controlled Balancing Devace with Inductive Energy Storage. Vestnik YuUrGU. Ser. "Energetika" [Bulletin of the South Ural State University. Ser. "Power Engineering"], 2014, vol. 14, no. 3, pp. 33-40 (in Russ.).

[12] Zinov’ev G.S. Osnovy silovoy elektroniki [Principles of Power Electronics]. Novosibirsk, NGTU Publ., 2004. 199 p.

[13] Sidorov S.A., Roginskaya L.E. Phase Converter for Unbalanced Load. Sb. much. Tr. Elektroenergeticheskie sistemy i seti. Energosberezhenie [Proc. Electric Power Systems and Networks. Energy Saving]. Ufa, Ufimsk. Gos. Aviats. Tekhn. Univ., 2013, pp. 121-125.

[14] Rozanov Yu.K., Ryabchitskiy M.V., Lepanov M.G., Kiselev M.G. Power Flow Control in the Converter with a Superconducting Inductive Energy Storage Device. Elektrichestvo [Electricity], 2008, no. 8, pp. 22-27 (in Russ.).