Dynamic analysis of island systems with wind-pumped-storage hybrid power stations

• Dynamic analysis of an island system with a wind-pumped-storage hybrid station.
• Investigation of technical issues associated with the various HPS (HPS: Wind-pumped-storage hybrid power station) operating modes.
• Possible constraints regarding the HPS operation and potential solutions.
• Hydro turbines present relatively slower dynamic response compared to diesel units.
• Under preconditions, HPS may present superior dynamic response than diesel units.

Combined wind and pumped-storage virtual power plants, called hybrid power stations (HPS), constitute a realistic and feasible option to achieve high renewable energy source (RES) penetration levels in power systems and particularly in autonomous island grids. Technical issues arising from the integration of HPS in islands have not been sufficiently investigated yet. In this paper, the dynamic behaviour of an island system with an HPS is analysed, the effects of the various HPS operating modes on the transient behaviour and stability of the system are investigated, constraints regarding the operation of the HPS are identified and potential solutions are proposed.