The overall efficiency of a pumped storage hydroelectric (PSH) system is determined by a combination of factors related to the turbine-generator equipment, hydraulic losses, and operational strategies. PSH efficiency is typically defined as the ratio of the energy generated during the discharge cycle to the energy consumed during the pumping cycle. Turbine and generator efficiency is a primary factor. The efficiency of the pump-turbine units in both generating and pumping modes directly affects the overall system efficiency. Higher turbine and generator efficiencies resul....
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