Impact of energy storage on island grid dynamics: A case study of Bonaire

摘要

The integration of grid-connected renewables is gaining wide spread acceptance nowadays. However, there is profound skepticism about the stability of power systems with high renewable penetration, especially due to their intermittent and ¿¿¿non-dispatchable¿¿¿ nature. One solution to this problem is the application of energy storage. Energy storage devices such as grid-connected batteries could work in tandem with renewable sources such as PV and Wind or in stand-alone mode to support the power system in the case frequency or voltage deviations exceed the desired limits. This paper presents the impact of grid-connected battery storage (through Electric Vehicles or fixed batteries) on the frequency stability improvement of island power systems with large amount of renewables infeed; the island of Bonaire is taken as a reference case. The results indicate a positive outcome from storage integration, with improved voltage and frequency response. In addition, improvement in system stability margins is also observed.