The provided diagram elucidates the process of electricity generation in a hydroelectric power station.
The electricity generation process in the hydroelectric power station involves two primary stages: the water flow from the high-level reservoir through the dam during the day to the power station for electricity production, and the return of water to the high-level reservoir at night.
Initially, water from the river is directed to the high-level reservoir, passing through the dam which is opened during the day and closed at night. Subsequently, the water travels to the power station where it facilitates electricity generation during daylight hours, contrasting with the night when water is pumped back to the dam.
During the daytime, the water descends to the power station where it drives the generator and reversible turbines to produce electricity. The generated electricity then flows through power lines to the national grid. Conversely, at night, the turbines reverse their role by pumping water back into the high-level reservoir for storage and future use.