Abstract
Its maturity makes pumped hydro energy storage (PHES) the most used technology in energy storage. Micro-hydro plants (<100 kW) are globally emerging due to further increases in the share of renewable electricity production such as wind and solar power. This paper presents the design of a micro-PHES developed in Froyennes, Belgium, using a pump as turbine (PaT) coupled with a variable frequency driver (VFD). The methods adopted for the selection of the most suitable pump for pumping and reverse mode are compared and discussed. Controlling and monitoring the PaT performances represent a compulsory design phase in the analysis feasibility of PaT coupled with VFD in micro PHES plant. This study aims at answering technical research aspects of µ-PHES site used with reversible pumps.
Highlights
Hydropower on a micro-scale is frequently used to bring electricity supply in remote or rural areas
This paper presents the design of a micro-pumped hydro energy storage (PHES) developed in Froyennes, Belgium, using a pump as turbine (PaT) coupled with a variable frequency driver (VFD)
This study aims at answering technical research aspects of μ-PHES site used with reversible pumps
Summary
Hydropower on a micro-scale is frequently used to bring electricity supply in remote or rural areas. An important drawback emerges: the energy production is dependent on spot water availability and on seasonally weather. Solar and wind energy have to deal with intermittency, even if the power plant is properly located and designed. This usually leads to install fossil-fuel energy sources, not environmentally helpful, to supply baseload demand, e.g. diesel engines. A frequent mismatch between renewable energy production and consumption might occur. This is why energy storage systems (ESSs) are strong allies [1]
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