Hydro generators and motor-generators for fixed- and variable-speed pumped storage
Hydro generators convert the mechanical energy of a hydro turbine into electrical energy and are built as high-speed, medium-speed, low-speed and bulb types. For pumped storage plants the company builds reversible fixed- and variable-speed motor-generators. Experience in building such machines exceeds 120 years.
- Types
- high-speed, medium-speed, low-speed, bulb hydro generators; reversible motor-generators
- Motor-generators
- with rotor for fixed and for variable speed
- Experience
- over 120 years
- Control
- integrated system: main control, speed governing, excitation, telecontrol, relay protection
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Generators, like turbines, are classified by rotational speed and arrangement. A bulb generator is placed in a capsule inside the flow passage together with a Bulb turbine, and the speed of high-speed and low-speed machines is matched to the head and the turbine type. A pumped storage motor-generator works as a generator during generation and as a synchronous motor when the plant pumps water into the upper reservoir. Machines of various types have been supplied to plants all over the world.
Motor-generators come with two rotor designs. For fixed speed a salient-pole rotor with DC excitation is used. The rotor for variable speed allows the pump-turbine speed to be changed, power in pumping mode to be regulated, efficiency to be raised and grid voltage to be supported. The manufacturer first supplied such a machine in 1990 for the Yagisawa pumped storage plant. A variable-speed motor-generator works together with the company's pump-turbine and gives the plant automatic frequency control in pumping mode.
The generators are supplied complete with turbines, an excitation system and a hydropower plant monitoring and control system. It includes equipment protection, a fault event recorder and communication with the remote dispatch center. For small and medium plants an integrated control system is offered in which main control, speed governing, excitation control, telecontrol and relay protection are assembled in modules. This layout saves space and cost, and installation and testing take less time.
The generators are ordered for new hydropower and pumped storage plants, for replacing machines at operating plants and for converting pumped storage units to variable speed. The manufacturer has two plants producing hydro turbines and hydro generators, supplies auxiliary systems and carries out procurement, installation, testing and commissioning on a turnkey basis.
Technical specifications
| Types | high-speed, medium-speed, low-speed, bulb hydro generators; reversible motor-generators |
|---|---|
| Motor-generators | with rotor for fixed and for variable speed |
| Experience | over 120 years |
| Control | integrated system: main control, speed governing, excitation, telecontrol, relay protection |
Request a price and lead time
Hydro generators and motor-generators for fixed- and variable-speed pumped storage. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8501 64 00 00 |
|---|---|
| HS, 6 digits | 8501 64 |
| CN (EU) | 8501 64 00 |
| HTSUS (USA) | 8501 64 00 00 |
| China customs tariff | 8501 64 10 00 8501 64 20 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which types of hydro generators are built?
High-speed, medium-speed, low-speed and bulb hydro generators, and for pumped storage plants reversible motor-generators of fixed and variable speed.
How do the motor-generator designs for pumped storage differ?
For fixed speed the rotor is salient-pole with DC excitation. The variable-speed rotor changes the pump-turbine speed and regulates power in pumping mode, and the manufacturer first supplied such a machine in 1990.
What is included in a complete hydro generator supply?
The turbine, the excitation system and the hydropower plant monitoring and control system with protection, a fault event recorder and communication with the dispatch center. For small and medium plants an integrated modular control system is offered.
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