Hydroelectric power plants are classified in different ways. According to the nature of water sources used by hydropower plants, they can be divided into three categories:
① Conventional hydropower plants: use natural rivers, lakes and other water sources to produce electricity
<; p> ② Pumped-storage power plants: use power grid load. Excess electricity in the lower valleys is pumped from lower reservoirs to upper reservoirs for storage. When the network load reaches its maximum, water is released to produce electricity and waste water. is sent to lower reservoirs to meet the needs of electrical loads such as grid peak shaving;③Tidal Power Plant: Use tidal power generated by the rise and fall of tides to generate electricity.
Hydroelectric power plants can be divided into two categories according to their methods of use and their abilities to regulate the natural flow of water:
①Runoff hydroelectric power plants: there is no tank or the tank capacity is very small and there is no natural water volume regulation. Hydroelectric power station with very small capacity or regulation capacity.
②Storage hydroelectric power station: a hydroelectric power station with a certain storage capacity and different natural water flow regulation capabilities; .