Damping Controller Design for Power Systems Using LMI and GA Techniques

Author(s):  
Z.S. El-Razaz ◽  
M.E-D. Mandor ◽  
E.Salim Ali
Author(s):  
Mortaza Farsadi ◽  
Arash Ghasemi

Recent technological progresses in the wide-area measurement systems (WAMS) are realizing the centralized controls as a breakthrough for improving the power systems stability. The most challenging deficiency against WAMS technology is related to communication delays. If this latency is neglected, it can deteriorate the damping performance of closed loop control or even degrade the system stability. This paper investigates a conventional Wide Area Damping Controller (WADC) for a static synchronous series compensator (SSSC) to damp out the Sub-Synchronous Resonance (SSR) and also investigation of the destructive effect of time delay in remote feedback signal. A new optimization algorithm called teaching-learning-based- optimization (TLBO) algorithm has been implemented to normalize and optimize the parameters of the global SSR damping controller. The IEEE Second Benchmark Model is considered as the system under study and all simulations are carried out in MATLAB/SIMULINK environment.


Author(s):  
Soudamini Behera ◽  
Ajit Kumar Barisal ◽  
Nirmalya Dhal ◽  
Deepak Kumar Lal

AbstractThis paper presents an optimal design of a static synchronous series compensator (SSSC)-based controller for damping of low-frequency oscillations in multi-machine power systems. The proposed controller design problem is formulated to the optimization problem. The tuning of controller parameters can be obtained by employing a new hybrid differential evolution and particle swarm optimization (hDE-PSO) algorithm. To justify the effectiveness of the proposed SSSC-based damping controller, three-machine and four-machine power systems have been considered. The hDE-PSO algorithm outperforms in the damping of oscillations over DE and PSO algorithms. Various simulation results are presented and compared for different load disturbances like three-phase fault, load rejection and tripping of one parallel transmission line. The simulation results ensure the robustness of the proposed controller.


1995 ◽  
Vol 10 (1) ◽  
pp. 158-166 ◽  
Author(s):  
M. Klein ◽  
L.X. Le ◽  
G.J. Rogers ◽  
S. Farrokhpay ◽  
N.J. Balu

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