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All Journal International Journal of Electrical and Computer Engineering Perfecting a Video Game with Game Metrics
Phong Thanh Tran
Ton Duc Thang University
Computer Science & IT Electrical & Electronics Engineering

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Optimal linear quadratic Gaussian control based frequency regulation with communication delays in power system Hoan Bao Lai; Anh-Tuan Tran; Van Van Huynh; Emmanuel Nduka Amaefule; Phong Thanh Tran; Van-Duc Phan
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 1: February 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i1.pp157-165

Abstract

In this paper, load frequency regulator based on linear quadratic Gaussian (LQG) is designed for the MAPS with communication delays. The communication delay is considered to denote the small time delay in a local control area of a wide-area power system. The system is modeled in the state space with inclusion of the delay state matrix parameters. Since some state variables are difficult to measure in a real modern multi-area power system, Kalman filter is used to estimate the unmeasured variables. In addition, the controller with the optimal feedback gain reduces the frequency spikes to zero and keeps the system stable. Lyapunov function based on the LMI technique is used to re-assure the asymptotically stability and the convergence of the estimator error. The designed LQG is simulated in a two area connected power network with considerable time delay. The result from the simulations indicates that the controller performed with expectation in terms of damping the frequency fluctuations and area control errors. It also solved the limitation of other controllers which need to measure all the system state variables.
Extended state observer based load frequency controller for three area interconnected power system Van Van Huynh; Phong Thanh Tran; Tuan Anh Tran; Dao Huy Tuan; Van-Duc Phan
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 3: June 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i3.18777

Abstract

In this paper, we develop a new extended state variable observer based LFC scheme for three-area interconnected power systems. The extended state observerbased load frequency controllers are developed which utilize disturbance estimation techniques. The propose control approach assures that the fluctuating things of the load frequencies reaches to a safer range and the load frequencies can also be made at a very minimal not to have an effect on power quality and power flow in multi-area interconnected power system. The results of the simulations using MATLAB/SIMULINK done did not only address that the proposed newly control method works effectively but also change powerfully the parameter variations of the interconnected areas of the power system. Especially, it works very well to limit disturbances impact on interconnected areas in the system. Therefore, the performance of interconnected power system under different multi-conditions is simulated with the new control method to demonstrate the feasibility of the system.
Co-Authors Anh-Tuan Tran Dao Huy Tuan Emmanuel Nduka Amaefule Hoan Bao Lai Tuan Anh Tran Van Van Huynh Van-Duc Phan Van-Duc Phan