Affiliations: Department of Electrical and Electronics Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, Andhra Pradesh 522502, India
Correspondence:
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Corresponding author: Sharath Babu Varam, Department of Electrical and Electronics Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, Andhra Pradesh 522502, India. E-mail: [email protected].
Abstract: In this paper a novel Q/P droop control strategy for regulating the voltage and frequency in Standalone micro grid with multiple renewable sources like solar and wind is presented. In contemporary to frequency control by synchronous machine a battery storage system is used for frequency control of Micro Grid. During the case of high discharge of the battery system a low rated synchronous generator is used to maintain the state of charge of the battery during frequency control. Since the output of the wind and solar varies continuously, a novel reactive (Q/P) droop control instead of conventional (P/F) and (Q/V) for voltage control. Adaptive Neuro Fuzzy logic Interface system (ANFIS) controller is used for frequency and voltage control for Renewable generation system. The induced voltage fluctuations are reduced to get nominal output power. The proposed model is tested on different cases and results show that the proposed method is capable of compensating voltage and frequency variations occurring in the micro grid with minimal rated synchronous generator.
Keywords: Adaptive neuro-fuzzy interface system (ANFIS), battery energy storage system (BESS), state of charge (SOC), frequency control, Q/P droop control, standalone micro grid, voltage damping effect, voltage control
