Modeling and simulation to optimize direct power control of DFIG in variable-speed pumped-storage power plant using teac
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METHODOLOGIES AND APPLICATION
Modeling and simulation to optimize direct power control of DFIG in variable-speed pumped-storage power plant using teaching– learning-based optimization technique Seyed Mohammad Hassan Hosseini1
•
Alireza Rezvani2
Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The issues related to the optimal control of large-scale storage systems in electric power systems such as pumped storage (PS) plant have turned into vital challenges in the way of integrating renewable energy sources into power systems to provide reliable and economical electric energy. In this regard, this paper uses the direct power control strategy to model and simulate a variable-speed PS plant, which includes a doubly fed induction generator (DFIG). The active and the reactive power of the stator would be able to be controlled, separately. This approach has a better dynamic performance compared to other methods, while it would be quite simple to implement. But there are some shortfalls with this method, such as high ripple relating to the active power as well as reactive power together with the current harmonics. In this respect, the space vector modulation (SVM) is applied to eliminate these shortfalls. In the proposed control technique, including SVM, the dynamic performance of the studied DFIG unit is controlled using the proportional–integral (PI) controller. It should be noted that the teaching–learning-based optimization (TLBO) method is employed to tune the PI controller for controlling the DFIG system in the PS plant. Finally, in order to validate the performance of the suggested framework, a comparison is made between the results obtained by the TLBO and the ones reported by other optimization methods. The obtained results using the TLBO algorithm indicate better performance of the PI controller to reduce the ripples of the active and reactive power of the stator as well as the harmonic power. Keywords Pumped-storage power plant Doubly fed induction generator Teaching–learning-based optimization Imperialist competitive algorithm Particle swarm optimization algorithm
1 Introduction Electrical energy must be essentially generated and consumed, simultaneously. Since the large-scale storage of energy would be economical, an effective and efficient solution would be using PS generation technology. In the past, almost every pump-turbine was composed of synchronous motors and generators operating with the network frequency, and thus, the speed was constant. Nowadays, PS Communicated by V. Loia. & Seyed Mohammad Hassan Hosseini [email protected] 1
Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
2
Department of Electrical Engineering, Saveh Branch, Islamic Azad University, Saveh, Iran
plants with doubly fed induction machine (variable speed) have been enhanced with advanced power electronic devices, not only can help control the system frequency, but also will result in the power system s
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