Multifunctional control design for voltage control, frequency and active microgrid power

Document Type : Research Paper

Authors

Department of Electrical Engineering, Kazerun Branch, Islamic Azad University, Kazerun, Iran

Abstract

Increasing the number of microgrids will challenge centralized control and telecommunications control structures. Multifunctional systems are a good alternative to decentralized control and management structures. The focus of this article is on designing multifactorial control for voltage, frequency and active power control. Past studies have spent their ability to stabilize the voltage at different terminals of a microgrid on a value. This can be technically and economically criticized. Different terminal voltages can be set to different values. It is not necessary to set the voltage of each terminal to the value of the apex. Economically, given the optimal load distribution, it may be possible to stabilize all terminals on an unjustified value. In this study, a protocol has been proposed by which the voltage at different terminals of a microgrid is able to stabilize at different values. In this paper, due to the stabilization of the voltage of different terminals on different values, the optimal distribution of reactive power is created. To regulate the voltage at the terminals where the voltage control devices are not available, the voltage corresponding to these terminals can be considered as one of the optimal reactive power dissipation constraints; in this case, the improvement of the voltage profile in critical terminals is facilitated. The article has tested the comparative method of fixed time and the postmodern method on a similar system. And it has been shown that the time-constant adaptive method has a better convergence time than the regression method. But the simplicity of the backlog method is significant in some applications (where there are no power-sensitive loads).

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