Hydro electric generating unit for micro-water-head hydroenergy development

The utility model discloses a hydro electric generating unit for micro-water-head hydroenergy development and relates to the technical field of hydroelectric generation. The hydro electric generating unit comprises a plurality of hydroelectric generators. Each hydroelectric generator comprises a pipeline. A synchronization permanent magnet generator and a hydraulic turbine are arranged inside each pipeline. The synchronization permanent magnet generator is fixed in the pipeline through a plurality of hollow fixing pipes. A cable penetrating outlet used for penetrating through a synchronization permanent magnet generator cable is arranged on a junction of one of the fixing pipes above the synchronization permanent magnet generator and a pipeline wall. The cable penetrating outlet is provided with a grid-connection frequency converter and a protective control device. Due to the synchronization permanent magnet generator, a synchronization magnetizing exciter control device is eliminated by the generator. Due to usage of the grid-connection frequency converter, grid-connection of a generator unit is simple, unit rotate speed is not limited in a certain rotate speed range, a speed regulating device can be canceled, and a generating auxiliary system is simplified. Therefore, the structure of the generator is simple, a large amount of civil engineering cost and device cost is saved, and popularization in the market is facilitated.