' Hydroelectric power station ' issue

Topic : 

The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

 

 

Answer :

 

The given picture depicts the dynamics of hydroelectric power station. In general, it produces electricity by using turbines operated by the power of water flows from upside to downside.

 

To be specific, at day time, the water stock at the dam of high-level reservoir flow down to the generator located at the low-ground. The power of water dragged by gravity is changed into electricity to national grid by reversible turbines. Then, the remaining water is saved at the low-level reservoir for the night time.

 

 During night, the hydroelectric power station uses remaining electricity to pump the water in the low-level reservoir to the high-level reservoir by using reversible turbines which were used as a generator at the day time. The escalated water during the night time can be used as a power source at the day time when the demand of electricity is high by using the same protocol explained above. In this way, the hydroelectric power station produces electric energy by using the gap of height and water as a medium of generating procedure.