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Constrained Load-frequency Control
Electric Power Components and Systems, 2008Abstract 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 +2 more
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Decentralised load-frequency control
IEE Proceedings D Control Theory and Applications, 1985Consider 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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Model Predictive Load-Frequency Control
IEEE Transactions on Power Systems, 2016A model predictive controller (MPC) for load frequency control (LFC) of an interconnected power system is investigated. The MPC is based on a simplified system model of the Nordic power system, and it takes into account limitations on tie-line power flow, generation capacity, and generation rate of change.
Anne Mai Ersdal +2 more
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Interconnected system load-frequency control
Electrical Engineering, 1949IF ALL TIE LINES were of ample capacity and stations under automatic control were well distributed geographically, there would be no need for tie line control except where required by contract interchange schedules. With the large scale advent of system interconnections and the necessity for more efficient operation, the tendency is to use frequency ...
H. M. Dimond, G. S. Lunge
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Estimation and Prediction in Load frequency Control
2007 International Conference on Power Engineering, Energy and Electrical Drives, 2007Many controllers designed for load-frequency control (LFC) in power system are based on the knowledge of system state, which is generally not measured. This paper presents a method for estimation of disturbance and system state in LFC. In power systems, measurement signals and control signals are transmitted over long distances between controller and ...
Petrović, Ivan +2 more
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[Proceedings 1992] The First IEEE Conference on Control Applications, 2003
A technique for the control of frequency deviation in interconnected power systems is introduced. The technique is based on the application of linear feedback H-infinity robust controllers in the power system model. The controller response should be fast enough to offset the frequency errors due to load variations.
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A technique for the control of frequency deviation in interconnected power systems is introduced. The technique is based on the application of linear feedback H-infinity robust controllers in the power system model. The controller response should be fast enough to offset the frequency errors due to load variations.
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Load frequency control system with smart meter and controllable loads
2017 8th International Renewable Energy Congress (IREC), 2017The 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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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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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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Load frequency control using ANN-PID controller
2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2016A control scheme of ANN based proportional-integral-derivative (PID) controller is developed here to maintain the system frequency at nominal value. Due to some complication of modern industrial system, the conventional PID controller is not capable to meet our requirement.
K. Kumari +3 more
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Review of Various Load Frequency Controllers
2021In a power system, various fluctuations can occur in voltage and frequency due to the disturbances and sudden changes in the load (due to load change or fault). Whenever there is a change in the load, voltage and frequency get affected/disturbed. Voltage regulator is designed to compensate the voltage fluctuations and to compensate or maintain the ...
Alok Kumar +3 more
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