scholarly journals Wide area coordinated control for low-frequency oscillations damping in a wind-integrated power system

2019 ◽  
Vol 2019 (18) ◽  
pp. 4941-4945 ◽  
Author(s):  
Abhilash Kumar Gupta ◽  
Kusum Verma ◽  
Khaleequr Rehman Niazi
Keyword(s):  
Power System ◽  
Low Frequency ◽  
Coordinated Control ◽  
Wide Area ◽  
Low Frequency Oscillations ◽  
Integrated Power System

scholarly journals The Delay-Dependent DOFC for Damping Inter-Area Low-Frequency Oscillations in an Interconnected Power System Considering Packet Loss of Wide-Area Signals

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5892
Author(s):  
Miaoping Sun ◽  
Yaosheng Guo ◽  
Seyha Song
Keyword(s):  
Power System ◽  
Packet Loss ◽  
Sufficient Conditions ◽  
Low Frequency ◽  
Wide Area ◽  
Interconnected Power System ◽  
Low Frequency Oscillations ◽  
Dynamic Output Feedback Controller ◽  
Delay Dependent ◽  
Model Reduction Technique

In this paper, the inter-area low-frequency oscillations are restrained in the interconnected power system by making use of the delay-dependent wide-area dynamic output feedback controller (DOFC). Modal analysis is adopted to obtain the modes of inter-area oscillation to be controlled and the Schur truncation model reduction technique is represented to reduce the order of the power system. The augmented closed-loop system model, where the transmission delay and packet loss of wide-area signals are considered, is established. The sufficient conditions of exponentially mean-square stable are obtained according to Lyapunov’s stability theory. Finally, case studies are carried out on a two-area four-machine power system, where our proposed controller, a conventional controller, and the wide-area damping controller in the existing references are installed, respectively. The simulation results under different external disturbances, packet loss rates, and delays are presented to show the effectiveness and advantages of our proposed controller.

scholarly journals Optimal Location and Design of TCSC controller For Improvement of Stability

2011 ◽  
pp. 210-215
Author(s):  
Swathi Kommamuri ◽  
P. Sureshbabu
Keyword(s):  
Power System ◽  
Optimization Problem ◽  
Low Frequency ◽  
System Stability ◽  
Simulation Environment ◽  
Swarm Optimization ◽  
Stability Performance ◽  
Low Frequency Oscillations ◽  
Simulation Results ◽  
The Stability

Power system stability improvement by a coordinate Design ofThyristor Controlled Series Compensator (TCSC) controller is addressed in this paper.Particle Swarm Optimization (PSO) technique is employed for optimization of the parameterconstrained nonlinear optimization problem implemented in a simulation environment. The proposed controllers are tested on a weakly connected power system. The non-linear simulation results are presented. The eigenvalue analysis and simulation results show the effectiveness and robustness of proposed controllers to improve the stability performance of power system by efficient damping of low frequency oscillations under various disturbances.

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