Micro and small hydroelectric power plants. Unified energy modules of small hydroelectric power plants. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Alternative energy sources
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Unified power modules of small HPPs are designed both for power supply to isolated consumers of electricity, and for power output to the power system.
To select the type and parameters of small HPPs, specialists can carry out preliminary design and survey work.
The output voltage of the generator and the current frequency can be changed at the request of the Customer.
The composition of the unified module
The energy module (Fig. 1.1) includes: 1 - axial hydraulic machine of the PL-G series; 2 - multiplier; 3- alternator; 4 - S - shaped suction pipe.
Fig.1.1. Schematic diagram of the power module of a small hydroelectric power station
Next to the hydraulic unit there are cabinets for the thyristor excitation system and a static power frequency converter and a cabinet for generator outputs, control equipment and relay protection. All equipment (except units with impellers with a diameter of 1500 mm) is placed on a unified platform (frame). Energy modules, in this case, do not exceed the size of the container and can be transported by rail and highway.
An updated nomenclature of hydraulic units was obtained as a result of complex tests on a model of a hydraulic unit with a diameter of the impeller D1=250 mm.
Horizontal rotary-blade (propeller) hydraulic units PL (Pr) - G for small HPPs are offered in six main modifications: 25; 35; 50; 100; 120; 150 and are designed to use the energy of the watercourse with working heads from 2 to 20 m and flow rates from 0,25 to 1,5 m3/s. The power developed by one unit, depending on the type of unit, ranges from several kW to 1 MW or more.
Author: Magomedov A.M.
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