The presented diagram depicts information on electricity generation using hydroelectric power generators. Generally, there are four main steps in the electricity conversion process generated by a hydroelectric generator. Also, the hydroelectric power station has bifunctional roles: generating electricity during the day and, as a pumped station, collecting water from downstream and storing it upstream during the night.
First of all, during the day, water from the upstream river is collected in the high-level reservoir, equipped with high-level concrete walls, called the dam. Next, once the dam is filled with water, the water is released into the irrigation pipeline, flowing into the power station toward the downstream river and connecting to the generator located in the power station. Further, using gravitational force, the high-current water flow moves the blade, then the turbine, inside the generator, converting the mechanical force into electricity. Lastly, the produced electricity is then distributed into the national grid using connected power lines. In addition, the water that goes into the generator turbine is released and stored in the low-level reservoir.
In contrast, during the night, the water stored downstream is sent back to the upstream reservoir using the generator, pumping the water into the high-level reservoir by using the same pathway where electricity is produced in reversible processes.