Hydropower Knowledge

It has been 111 years since China started the construction of shilongba hydropower station, the first hydropower station in 1910. In these more than 100 years, from the installed capacity of shilongba hydropower station of only 480 kW to the 370 million KW now ranking first in the world, China...Read more »

Water turbine is a kind of turbine machinery in fluid machinery. As early as about 100 BC, the prototype of water turbine – water turbine has been born. At that time, the main function was to drive machinery for grain processing and irrigation. Water turbine, as a mechanical device powered ...Read more »

Pelton turbine (also translated: Pelton waterwheel or Bourdain turbine, English: Pelton wheel or Pelton Turbine) is a kind of impact turbine, which was developed by American inventor Lester W. Developed by Alan Pelton. Pelton turbines use water to flow and hit the waterwheel to obtain energy, whi...Read more »

The rotational speed of hydraulic turbines is relatively low, especially for vertical hydraulic turbines. In order to generate 50Hz alternating current, the hydraulic turbine generator adopts a structure of multiple pairs of magnetic poles. For a hydraulic turbine generator with 120 revolutions p...Read more »

The water turbine is a turbomachinery in the fluid machinery. As early as around 100 BC, the prototype of the water turbine, the water wheel, was born. At that time, the main function was to drive machinery for grain processing and irrigation. The water wheel, as a mechanical device that uses wat...Read more »

Hydro generator is composed of rotor, stator, frame, thrust bearing, guide bearing, cooler, brake and other main components (see Figure). The stator is mainly composed of frame, iron core, winding and other components. The stator core is made of cold-rolled silicon steel sheets, which can be made...Read more »

1. The load shedding and load shedding tests of hydro generator units shall be conducted alternately. After the unit is initially loaded, the operation of the unit and relevant electromechanical equipment shall be checked. If there is no abnormality, the load rejection test can be carried out acc...Read more »

1. Causes of cavitation in turbines The reasons for the cavitation of the turbine are complex. The pressure distribution in the turbine runner is uneven. For example, if the runner is installed too high relative to the downstream water level, when the high-speed water flows through the low-press...Read more »

Pumped storage is the most widely used and mature technology in large-scale energy storage, and the installed capacity of power stations can reach gigawatts. At present, the most mature and largest installed energy storage in the world is pumped hydro. Pumped storage technology is mature and sta...Read more »

In addition to the working parameters, structure and types of hydraulic turbine introduced in previous articles, in this article, we will introduce the performance indexes and characteristics of hydraulic turbine. When selecting a hydraulic turbine, it is important to understand the performance o...Read more »

Prevent phase-to-phase short circuit caused by loose ends of stator windings The stator winding should be fastened in the slot, and the slot potential test should meet the requirements. Regularly check whether the stator winding ends are sinking, loose or worn. Prevent stator winding insulatio...Read more »

There is no direct relationship between the AC frequency and the engine speed of the hydropower station, but there is an indirect relationship. No matter what type of power generation equipment it is, it needs to transmit power to the grid after generating electricity, that is, the generator need...Read more »