Reactive power compensation in alternative current traction system

Authors

  • В. Г. Ягуп Kharkiv National University of Municipal Economy, Ukraine
  • Е. В. Ягуп Ukrainian State Academy of Railway Transport, Ukraine

DOI:

https://doi.org/10.15802/etr.v0i7.42303

Keywords:

symmetrization, reactive power, visual simulation, searching optimization

Abstract

The alternative current traction substation is considered when primary transformer’s windings are connected in a star and secondary windings connected in delta. Real case, when system is supplied from traction transformer of type TDNG 25000/110 is considered.   A traction load is supplied from one side of delta connection. This creates asymmetrical mode in power supply, decreases power factor and increases copper losses in the system. Simulation of electromagnetic processes on visual model shows a considerable asymmetry in voltages and currents of transformer. Searching optimization  based on Nelder-Mead algorithm is implemented on Simulink all at the same time with visual model of traction substation on SimPowerSystem. As searching optimization result are found parameters of simmetrizating device, which provides balanced voltages and currents on transformer’s windings. Reactive power in system is completely compensated and copper losses in supply system are minimized.

Author Biographies

В. Г. Ягуп, Kharkiv National University of Municipal Economy

Department of Municipal Power Supply

Е. В. Ягуп, Ukrainian State Academy of Railway Transport

Department of Electrical Transport System Automation

References

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Yagup, V.G., Yagup, K.V. The calculation of mode of reactive power compensation in asymmetrical power supply system with searching optimization method. – Scientific works of the Donetsk national technical university. Series “Electrical and power engineering”. – Donetsk. 2011; v.11(186).. 449-454.

Published

2015-05-07

Issue

Section

Power Supply