Hydropower Knowledge

  • Post time: 04-06-2022

    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 »

  • Post time: 04-02-2022

    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 »

  • Post time: 03-28-2022

    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 »

  • Post time: 03-23-2022

    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 »

  • Post time: 03-21-2022

    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 »

  • Post time: 03-14-2022

    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 »

  • Post time: 03-08-2022

    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 »

  • Post time: 03-07-2022

    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 »

  • Post time: 03-04-2022

    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 »

  • Post time: 03-01-2022

    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 »

  • Post time: 02-25-2022

    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 »

  • Post time: 02-23-2022

    1. What is the basic function of the governor? The basic functions of the governor are: (1) It can automatically adjust the speed of water turbine generator set to keep it running within the allowable deviation of rated speed, so as to meet the requirements of power grid for frequency quality ...Read more »

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