SGen-2000P — 370–560 MVA turbo generator with pressurized air cooling and water-cooled stator
SGen-2000P is a series of two-pole turbo generators of 370–560 MVA in which the casing is filled with air under excess pressure instead of hydrogen. The stator winding is water-cooled. Efficiency up to 99 % is comparable with hydrogen-cooled machines, but the plant needs no hydrogen system.
- Apparent power
- SGen5-2000P (50 Hz): 370–545 MVA; SGen6-2000P (60 Hz): 370–560 MVA
- Stator voltage
- up to 22 kV
- Efficiency
- up to 99 %
- cos φ
- 0.80 (50 Hz) / 0.85 (60 Hz)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The 370–560 MVA range was traditionally held by hydrogen-cooled generators. In SGen-2000P air at an excess pressure of up to 1 bar plays this role, so the gas handling, the hydrogen seals and the related risks disappear. The plant becomes simpler, and capital and operating costs fall. The generator is built on a modular building-block principle, and many of its units are shared with other machines in the company's portfolio.
The SGen5-2000P version for 50 Hz is rated for 370–545 MVA at a power factor of 0.8, with a weight of up to 370 t. SGen6-2000P for 60 Hz delivers 370–560 MVA at 0.85 and weighs up to 350 t. The stator voltage in both cases is up to 22 kV, with MICALASTIC® insulation of class F.
The stator winding bars have hollow stainless steel conductors through which the cooling water flows, and the design has been proven in service across the fleet. Ventilation is simplified, and the air coolers are built into the foundation frame. The static excitation system is integrated into the rotor shaft and needs no extra bearing or coupling. The rotor is designed for 10 000 start-stop cycles without withdrawal over its service life, and its winding temperature is monitored to extend its life. The vibration level corresponds to zone A under ISO.
Installation follows the plug & play principle with a simple foundation interface and a small footprint. Fewer spare parts are needed, the generator can run without permanent staff, and there is no risk of oil ingress because there are no hydrogen seals. Several access points at different places on the machine are provided for maintenance. Water cooling of the stator tolerates frequent starts and load-following duty well.
SGen-2000P is installed in combined-cycle and steam power plants, large simple- and combined-cycle gas turbine plants in peak, intermediate and base load duty, in cogeneration facilities, and in steam tailing schemes. The machine also works as a synchronous condenser in grids with a high share of renewables. In this mode it supplies and absorbs reactive power, supports the short-circuit power, adds inertia and has a short-time overload capability.
Technical specifications
| Apparent power | SGen5-2000P (50 Hz): 370–545 MVA; SGen6-2000P (60 Hz): 370–560 MVA |
|---|---|
| Stator voltage | up to 22 kV |
| Efficiency | up to 99 % |
| cos φ | 0.80 (50 Hz) / 0.85 (60 Hz) |
| Cooling | stator by water (hollow stainless steel conductors), casing by air at an excess pressure of up to 1 bar |
| Insulation | class F, MICALASTIC® |
| Excitation | static, integrated into the rotor shaft |
| Weight | up to 370 t (50 Hz) / 350 t (60 Hz) |
| Rotor service life | 10 000 starts without rotor withdrawal |
| Vibration | zone A under ISO |
Request a price and lead time
SGen-2000P — 370–560 MVA turbo generator with pressurized air cooling and water-cooled stator. 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 8501 64 30 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What rating does SGen-2000P have for 50 and 60 Hz grids?
SGen5-2000P for 50 Hz is rated for 370–545 MVA at cos φ 0.8. SGen6-2000P for 60 Hz delivers 370–560 MVA at cos φ 0.85.
Is a hydrogen system needed for SGen-2000P?
No, the casing is filled with air at an excess pressure of up to 1 bar, and the stator is water-cooled. Efficiency reaches 99 %.
Can SGen-2000P work as a synchronous condenser?
Yes, the generator is used to stabilize grids with a high share of renewables. It regulates reactive power and adds inertia and short-circuit power.
Similar equipment from other manufacturers
