Adaptive sliding mode control for multi-machine power systems under normal and faulted conditions

Document Type : Article

Authors

1 Department of Electrical Engineering, Lorestan University, Lorestan, Khorramabad, Iran

2 Department of Electrical Engineering, Islamic Azad University, Khomeinishahr Branch, Khomeinishahr, Iran

Abstract

This paper proposes a new adaptive sliding mode (ASM) decentralized excitation controller to improve the stability of multi-machine power systems under different perturbations such as system’ parametric and structural uncertainties. The stability of the closed-loop system is proved by Lyapunov stability theory. The proposed controller is evaluated through simulation on the standard IEEE 33-bus-bar power system which contains 6 synchronous machines and a HVDC-link. The simulation results indicate good robustness and satisfactory performance of the proposed controller. Moreover, in this paper, using the space-phasor based sequence networks method, a procedure for the dynamic analysis of modern power systems under the transient asymmetrical faults is presented. The method considers the complete dynamics of the synchronous machines and the HVDC-link and provides the possibility of taking into account the sequence networks dynamics.

Keywords

References

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Scientia Iranica
Volume 29, Issue 5
Transactions on Computer Science & Engineering and Electrical Engineering (D)
September and October 2022
Pages 2526-2536

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History

  • Receive Date: 29 March 2020
  • Revise Date: 12 September 2020
  • Accept Date: 28 December 2020

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