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The importance of pumped-storage hydro (Photo Features)

   February 10, 2018        2311   

Pumped storage hydro power Projects are a natural fit with high penetration of renewable energy. These projects help to maximise the use of water source.Pumped storage provides a load reliable and immediate source of energy when the sun has set.

 With utilities looking to expand their generating fleets with intermittent renewables like wind and solar, the importance of pumped-storage hydro has never been greater. Highlighted here are some of the most notable pumped-storage projects from around the globe.
The modern control room at Germany’s 153-MW Herdecke pumped-storage plant is part of a complex built to replace the Koepchenwerk project in the late 1980s.
Portugal’s 189MW Baixo Sabor pumped storage cascade was originally envioned as a single pumped storage facility but later reconfigured to feature two plants in a cascade.
An evaluation of Michigan’s 1,872-MW Ludington pumped-storage project in 2006 led to a major overhaul and upgrade of the entire facility.

A turbine runner rehabilitation project at Ontario’s 174-MW Sir Adam Beck Pump Generating Station gave operators a change to increase its efficiency and discharge by reintroducint adjustable flaps in the stay vane outlets.

Completed in 2004, the 1,060-MW Goldisthal pumped-storage project is the largest hydropower plant in Germany and one of the largest in Europe.
The 240-MW Lewiston Pump Generating Plant is one of several New York Power Authority facilities undergoing rehabilitation as part of its life extension and modernization program.
Each of the 20 wicket gates at South Carolina Electric and Gas’ 576-MW Fairfield plant is individually controlled by a hydraulic servo, causing a number of unique challenges for SCE&G and its suppliers.
The first unit at the Czech Republic’s 325-MW Dlouhe Strane project was replaced after only about two decades of service due to high dynamic loads caused by fast transitions between pumping and generating modes.
France’s Le Cheylas pumped-storage project became the first in the world to be converted from fixed- to variable-speed operation following the award of a European Commission grant in 2012.

From Hydro World