OPTIMAL FLOW CONTROL FOR INCREASED ELECTRICITY PRODUCTION IN SMALL HYDROPOWER PLANTS

Daniel Vasile BANYAI, Ionel Radu POP, Dan OPRUTA, Liviu Ioan VAIDA

Abstract


Hydropower is the most flexible and consistent of the renewable energy resources. A particular importance should be given to small hydropower plants, because of their large number. Small hydropower plants are sized so the servitude flow is obtained at minimum level of water, and when the level increase this flow increases. The difference between effective servitude stream flow and the amount required by the law, may be considered as a loss of energy in the sense that it could be sent to the turbine, thus increasing the produced energy. For this, it is necessary the use of a sluice gate for flow section  djustments. The paper presents the mathematical model for hydropower constructions of this type (up to 5 MW), which was utilized for numerical simulations, showing the main advantage mentioned above. The flow coefficients in the model were corrected after measurements made at two different hydropower plants. Then, a software application was made for dimensioning:
the water intake, accumulation reservoir, desander, charging chamber and supply duct, so all the available flow is used.


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References


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