Mitigating techniques for the operational challenges of a standalone hybrid system integrating renewable energy sources

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Arul P.G.
Ramachandaramurthy V.K.
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Elsevier Ltd
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Renewable energy sources (RESs) combined with energy storage can significantly increase the resilience of standalone systems. However, the intermittent nature of renewable energy resources creates a number of operational challenges for standalone systems. In this paper, the potential challenges facing the operation of a standalone hybrid system with solar photovoltaic (PV) and wind turbine energy generation and battery energy storage are addressed. Control strategies for the system sources are developed to mitigate the potential challenges. A droop-based voltage and frequency control strategy is proposed for the battery energy storage to balance the mismatch between the renewable generation and the load and to maintain the system stability. An active and reactive power control strategy with maximum power point tracking (MPPT) is proposed for the PV and wind sources to maximize the generation when there is a lack of energy resources and to supply quality power from the sources. A simulation was completed to determine the viability of the proposed control strategies. Results show that the proposed control strategies are able to regulate the system voltage and frequency within the acceptable ranges irrespective of variations in the sources and the load-demand. � 2017 Elsevier Ltd
Electric batteries; Electric frequency control; Energy resources; Energy storage; Hybrid systems; Maximum power point trackers; Natural resources; Power control; Reactive power; Renewable energy resources; Solar power generation; System stability; Voltage control; Wind turbines; Active and reactive power controls; Bus regulation; Droop control; Hybrid renewable energy systems; Maximum Power Point Tracking; Renewable energy source; Stand-alone hybrid system; Voltage and frequency control; Quality control; alternative energy; control system; electricity supply; energy resource; operations technology; photovoltaic system; power generation; renewable resource; solar power; technology adoption; wind power; wind turbine