Abstract
High integration of PV diminishes system inertia, which jeopardizes the system frequency stability. Adjusting PVs’ output according to demand is an active power control method requiring no energy storage devices, which realizes grid frequency support by a certain reserved power of PV. To equally reserve power between different PVs without communication, this paper combines the operation characteristics of the PV module on the right side of the maximum power point and proposes the characteristic of power reserve and adaptive power reserve-frequency supporting control. Furthermore, irradiance and temperature sensors, cumbersome mathematical computation, and accurate measurement of PV module parameters can be eliminated. Finally, simulations are provided to validate the effectiveness of the proposed control strategy.
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