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Energies 2017, 10(11), 1840; https://doi.org/10.3390/en10111840

An Adaptive Model Predictive Load Frequency Control Method for Multi-Area Interconnected Power Systems with Photovoltaic Generations

1
National-Local Joint Engineering Laboratory of Digitalize Electrical Design Technology, Wenzhou University, Wenzhou 325035, China
2
School of Computer, South China Normal University, Guangzhou 510631, China
*
Author to whom correspondence should be addressed.
Received: 15 October 2017 / Revised: 7 November 2017 / Accepted: 9 November 2017 / Published: 11 November 2017
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

As the penetration level of renewable distributed generations such as wind turbine generator and photovoltaic stations increases, the load frequency control issue of a multi-area interconnected power system becomes more challenging. This paper presents an adaptive model predictive load frequency control method for a multi-area interconnected power system with photovoltaic generation by considering some nonlinear features such as a dead band for governor and generation rate constraint for steam turbine. The dynamic characteristic of this system is formulated as a discrete-time state space model firstly. Then, the predictive dynamic model is obtained by introducing an expanded state vector, and rolling optimization of control signal is implemented based on a cost function by minimizing the weighted sum of square predicted errors and square future control values. The simulation results on a typical two-area power system consisting of photovoltaic and thermal generator have demonstrated the superiority of the proposed model predictive control method to these state-of-the-art control techniques such as firefly algorithm, genetic algorithm, and population extremal optimization-based proportional-integral control methods in cases of normal conditions, load disturbance and parameters uncertainty. View Full-Text
Keywords: load frequency control; multi-area interconnected power systems; photovoltaic generation; model predictive control; proportional-integral control load frequency control; multi-area interconnected power systems; photovoltaic generation; model predictive control; proportional-integral control
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Zeng, G.-Q.; Xie, X.-Q.; Chen, M.-R. An Adaptive Model Predictive Load Frequency Control Method for Multi-Area Interconnected Power Systems with Photovoltaic Generations. Energies 2017, 10, 1840.

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