Hydro Power Plant Classification

Hydro Power Plant classification

Hydro Power Plants can be divided into two types: impact Hydro Power Plants and counter-Hydro Power Plants according to the working principle. Impact runner

Rotated by the impact of the water flow, the pressure of the water flow is unchanged during the work process, mainly the conversion of kinetic energy; the runner of the counter-Hydro Power Plant is rotated by the reaction force of the water flow in the water, and the pressure energy and kinetic energy of the water flow are changed during the work , But mainly the conversion of pressure energy.

According to the flow direction of the water flow, the impulse Hydro Power Plant can be divided into two types: the cutting type (also known as the bucket type) and the diagonal type. Diagonal water

The structure of the Hydro Power Plant is basically the same as that of the water bucket Hydro Power Plant, except that the jet direction has an inclination angle and is only used for small units. [1]

Theoretical analysis proves that the efficiency is the highest when the circumferential velocity at the pitch circle of the water bucket is about half of the jet velocity. When the load of this type of Hydro Power Plant changes, the direction of the water inlet speed of the runner does not change. In addition, this type of Hydro Power Plant is used in high-head power plants. The head change is relatively small, the speed change is not large, so the efficiency is less affected by the load change , The efficiency curve is relatively gentle, with the highest efficiency exceeding 91%.