OPTIMIZATION OF MAGNETIZATION AND MAGNATION REGIMES OF STOPPED THREE-PHASE SYNCHRONOUS MACHINE
DOI:
https://doi.org/10.15588/1607-6761-2018-1-6Keywords:
синхронная машина, режимы намагничивания и размагничивания, потери электрической энергии, оптимизацияAbstract
Purpose. Investigation and optimization (minimization) of electric energy losses in a stopped synchronous machine with a thyristor exciter under conditions of its magnetization and demagnetization.
Methodology. Operator and variational calculus, mathematical analysis and simulation computer simulation.
Findings. The mathematical description of the system under study is developed: "thyristor exciter – stopped synchronous machine", which represents the analytical dependencies for electromagnetic processes, as well as the total power and energy losses in the system under magnetization and demagnetization regimes of the synchronous machine. The optimal time functions for changing the flux linkages of the damper winding and the excitation current of the stopped synchronous machine, in which they are minimized by energy in the system under investigation when the machine is magnetized and demagnetized. The dependences of the total energy losses in the system under study on the durations of the magnetization and demagnetization times of the machine are calculated, and their comparison is compared for different types (linear, parabolic and proposed optimal) of the trajectories of the change of the linkage, as well as for a linear and exponential change in the excitation current of the machine. Analytic dependencies are obtained using the calculations of electromagnetic and energy transient processes in the "thyristor exciter – stopped synchronous machine" system under the considered types of variation of flux linkage and excitation current of the machine.
Originality. It consists in finding the optimal trajectories of the time variation of the excitation current of a stopped synchronous machine and the optimal durations of its magnetization and demagnetization times, which ensure minimization of energy losses in the system "thyristor exciter – stopped synchronous machine".
Practical value. It consists in reducing unproductive energy losses in synchronous generators and motors under the conditions of their magnetization and demagnetization.
References
[1] Usov, S.V., Mikhalev, B.N., Chernovets, A.K. (1987). Elektricheskaya chast elektrostantsiy. Leningrad, Energoatomizdat, 616.
[2] Sinyugin, V.YU., Magruk, V.I., Rodionov, V.G. (2008). Gidroakkumuliruyushchiye elektrostantsii v sovremennoy energetike. M. ENAS, 352.
[3] Pavlov, G.M., Merkur'yev, G.V. (2001). Avtomatika energosistem. SPb. RAO «YEES Rossii», 387.
[4] Beschastnov, G.A., Karpov, A.M., Nemeni, T.M., Semonova, G.S. (1980). Raschot protsessa puska obratimogo agregata GAES ot staticheskogo preobrazovatelya chastity [Calculation of the start-up process of a reversible PSPS unit from a static frequency converter]. Elektrichestvo, 3, 15-19 [in Russian].
[5] Petelin, D.P. (1968). Avtomaticheskoye upravleniye sinkhronnymi elektroprivodami. M. Energiya, 192.
[6] Veynger, A.M. (1985). Reguliruyemyy sinkhronnyy elektroprivod. M. Energoatomizdat, 224.
[7] Kopylov, I.P. (1973). Elektromekhanicheskiye preobrazovateli energii. M. Energiya, 400.
[8] Volkov, V., & Dovbischuk, D. (2015). Improvement of frequency start of hydroelectric pumped storage power plant in the pumping mode. Electrical Engineering And Power Engineering, 1, 55-61. doi: http://dx.doi.org/10.15588/1607-6761-2015-1-10
[9] Kopylov, I.P., Klokov, B.K., Morozkin, V.P., Tokarev, B.F. (2011). Proyektirovaniye elektricheskikh mashin: uchebnik dlya vuzov. M. «Yurayt», 767.
[10] Braslavskiy, I.YA., Ishmatov, Z.SH., Polyakov, V. N. (2004). Energosberegayushchiy asinkhronnyy elektroprivod. M. Akademiya, 256.
[11] Chizhenko, I.M., Rudenko, V.S., Sen'ko, V.I. (1974). Osnovy preobrazovatelnoy tekhniki. M. V.shk., 430.
[12] Bolsham, YA.M., Krupovich, V.I., Samover, M.L. (1974). Spravochnik po proyektirovaniyu elektroprivoda silovykh i osvetitelnykh ustanovok. M. Energiya, 728.
[13] Petrov, YU.P. (1977). Variatsionnyye metody teorii optimalnogo upravleniy. Leningrad. Energiya, 280.
[14] Tykhovod, S. (2015). Improvement of iterative methods of the nonlinear systems solution of state equations of magnetoelectric equivalent schemes. Electrical Engineering And Power Engineering, 1, 46-49. doi: http://dx.doi.org/10.15588/1607-6761-2015-1-8
[15] Tykhovod, S., Kornus, T., & Patalakh, D. (2015). Method of accelerated numerical calculation of transients in electrical circuits based on solution approximation by algebraic polynomials. Electrical Engineering And Power Engineering, 2, 48-54. doi: http://dx.doi.org/10.15588/1607-6761-2015-2-7
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2018 VOLKOV V. A.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Creative Commons Licensing Notifications in the Copyright Notices
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under aCreative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
