Adaptive sliding mode control for multi-machine power systems under normal and faulted conditions
نویسندگان
1 Faculty of Electrical Engineering, Shahrood University of Technology, Shahrood, Iran
2 Faculty of Electrical Engineering, Shahrood University of Technology, Shahrood, Iran.
3 Faculty of Electrical Engineering, Shahrood University of Technology, Shahrood, Iran
doi
10.24200/sci.2020.55717.4371چکیده
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.
