Results 201 to 210 of about 12,777,871 (250)

Digital Load Frequency Control

2020 6th IEEE International Energy Conference (ENERGYCon), 2020
Frequency of power supply system needs to be kept constant or fixed irrespective of the varying changes in load demand in order to ensure the well-being of power generating equipment and delivery of good quality power at the demand side. This paper presents an enhanced digital PD controller for Load Frequency Control (LFC) of UAE power system based on ...
Mekonnen Shewarega, Abdulla Ismail
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Load-frequency control service in a deregulated environment

Decision Support Systems, 1999
In a deregulated environment, independent generators and utility generators may or may not participate in the load frequency control of the system. For the purpose of evaluating the performance of such a system, a flexible method has been developed and implemented.
A. P. Sakis Meliopoulos, George J. Cokkinides, Anastasios G. Bakirtzis   +2 more
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Constrained Load-frequency Control

Electric Power Components and Systems, 2008
Abstract Load-frequency control (LFC) is one of the major problems when dealing with the design and/or operation of electric power systems. Moreover, due to practical and physical considerations, bounds are often imposed on the level of control signals as well as the maximum frequency deviation. Control strategies that satisfy systems constraints, and,
M. F. Hassan, A. A. Abouelsoud, H. M. Soliman   +2 more
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Advanced Load Frequency Control

IEEE Transactions on Power Apparatus and Systems, 1972
The problem of designing a load frequency control law which reduces transient frequency oscillations (swings) and reduces the number of control signals sent to power houses is investigated. A linear model of an area of an interconnected power system is developed, and a discrete time, linear-plus-deadband, feedback control law is designed.
J. Glover, Fred Schweppe
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On Load Frequency Control

INFOR: Information Systems and Operational Research, 1991
AbstractThis paper addresses the design of decentralized controllers for interconnected large-scale electric power systems. The system is modelled as a collection of independent subsystems or control areas interconnected through high voltage tie-lines.
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Decentralised load-frequency control

IEE Proceedings D Control Theory and Applications, 1985
Consider an LQ problem: \(\min_{K\in \Omega}J(K)\) subject to \(\dot x=Ax+Bu\), \(y=Cx\), where \(J(K)=0.5\int^{\infty}_{0}x'(Q+K'RK)xdt\), \(\Omega =\{K:\) \(F(K)=0\}\); \(F(K)=K(I-C'(CC')^{-1}C)\), \(F(K)=K- diag\{K_ 1,...,K_ M\}\) for output, decentralised (with M local agents) feedback control, respectively. Two theorems are proved: Suppose \(K+L=R^
Geromel, J. C., Peres, P. L. D.
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An Adaptive Controller for Power System Load-Frequency Control

IEEE Power Engineering Review, 1989
An adaptive controller is presented for load-frequency control of power systems. It uses a PI (proportional-integral) adaptation to satisfy the hyperstability condition for taking care of the parameter changes of the system. Only the available information on the states and output are required for the control.
C.-T. Pan, C.-M. Liaw
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Load frequency control system with smart meter and controllable loads

2017 8th International Renewable Energy Congress (IREC), 2017
The advances in the network technology and the emergence of the renewable energy as primary sources have changed the current view of the power system control. Smart meters will become a very important component in future power systems. In the event of an emergency the demand will play vital role in the stability of the power system.
Ashraf Khalil, Zakariya Rajab
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Frequency and voltage control by decentralized controllable loads with fuzzy control

2011 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2011), 2011
In recent years, amount of renewable energy facilities using wind turbine generator and photovoltaic power system have been increased due to natural environment and resource depletion. Moreover, all electrification apartment houses or residences and electric vehicles have been increased.
Yoshihisa Kinjyo, Atsushi Yona, Naomitsu Urasaki, Tomonobu Senjyu, Toshihisa Funabashi   +4 more
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Intelligent Load Control For Frequency Regulation In Microgrids

Intelligent Automation & Soft Computing, 2010
Abstract During autonomous operation, MicroGrids may suffer large fluctuations in frequency due to the mismatch between load and local generation. The available spinning reserve might not always be enough to provide the required frequency support. Control of non-critical loads is able to provide the required primary and secondary frequency support. The
Bieshoy Awad, Janaka Ekanayake, Nick Jenkins   +2 more
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