We hear a lot of fuzz about solar-wind hybrid power plants. Its surprising why there’s no major projects which utilize solar energy to multiply the output from an existing hydro electric power station.
A solar-hydel hybrid plant would work, in a very basic sense, as below –
- Photo voltaic panels are deployed in arrays supported on floating barges in the reservoir. (OR on barren land if available in proximity)
- Additional penstock-turbine-generator circuits are built for the EXTRA power to be generated.
- A sump collects the water used by the NEW water circuits described in step 2.
- Solar energy created by the PV arrays are used by several DC motors to pump the water from sump back to the reservoir.
(Detailed design will involve output power, back-up duration, fluid flow losses etc as design parameters.)
This method has these advantages –
- Removes the need of batteries which are expensive to procure and maintain too. Instead here solar energy is stored as potential energy of water.
- Removes the need for expensive power electronics for DC to AC conversion.
- Reduces evaporation losses of water from reservoir considerably.
- Reduces the need for new Dams for increasing power generation.
Kj [/.] Sreekumar programs computers as a hobby and profession. Into programming from his school days, Sree uses Codemarvels to key in facts and fixes he finds interesting while working on different projects. Some of the articles here give away a few shades of his philosophical leanings too.