Smart Control of Photovoltaic Static Compensator System Based on Fuzzy Logic Control to Improve Voltage Stability

Subject Areas : Renewable energy

Ali Dalirian ¹ ( Department of Electrical Engineering, College of Electrical Engineering, Saveh Branch, Islamic Azad University, Saveh, Iran. )
Alireza Solat ² ( Department of Electrical Engineering, College of Electrical Engineering, Saveh Branch, Islamic Azad University, Saveh, Iran. )
Seyed Mohammad Javad Rastegar Fatemi ³ ( Department of Electrical Engineering, College of Electrical Engineering, Saveh Branch, Islamic Azad University, Saveh, Iran. )

Received: 2023-01-22 Accepted : 2023-04-22 Published : 2025-02-19

Keywords: Photovoltaic system, Voltage stability, smart control, static compensator mode,

Abstract :

This paper proposes a new fuzzy control for photovoltaic static compensator (PV-STATCOM) system in order to improve voltage stability. The task of proposed system is the dynamic voltage control of a solar PV system connected to load bus in different operating modes as STATCOM and/or PV active power generation. In this strategy, in case of perturbation, the proposed fuzzy controller by detecting it and considering the severity of disturbance, when there is no or insufficient remaining capacity of the inverter to compensate the reactive power, stops the active power production of the PV solar system, and then the entire capacity of the inverter is used as a STATCOM to regulate the voltage at the load bus. Then, after fixing the problem, the system returns to the active power generation mode as before. To evaluate the performance of the proposed fuzzy controller, different modes are simulated with EMTDC/PSCAD software to prove the ability of the controller to improve the stability of the power system. The results confirm that the PV-STATCOM with the proposed controller can improve the dynamic performance of the system.

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