Power Transformers
Low maintenance, high performance, digital and environmental-friendly designs
ME’s comprehensive suite of power transformers support a wide range of voltage levels with applications in generation, transmission and distribution. GE offers a wide variety of power transformers from medium to ultra-high voltage (1200 kV AC and ±1100 kV DC) and from small (5 MVA) to very large power ratings (2750 MVA).
Our product lines include conventional, special transmission such as phase-shifting, SVC, HVDC, low maintenance and reactors, as well as green power transformers. GE’s power transformers provide exceptional performance, quality and reliability with digitized protection and monitoring schemes and advanced design and testing capabilities.
Conventional Power Transformers
Conventional Power Transformers
- ME’s large, medium and small power transformers include equipment and solutions tailored to meet global customer’s needs. GE utilizes the latest in design, measurement and testing tools to ensure each transformer meets and exceeds the latest industry standards, as well as operational and customer specifications. Our design software includes sophisticated, in-house scientific calculation tools to perform advanced transformer analytics.
- The power transformer design optimization, verification and analytical software supports consistent fulfillment of all specified requirements and efficiencies greater than required by 2020 EC Energy Directive, EN 50629 and EN 50588-1. Examples of high efficiency are found in optimized transformer cooling, low air forced cooler noise, advanced core design techniques that reduce no-load loss and no-load noise, and accurate design verification tools.
- Key benefits
- Large power transformers up to 1200 kV AC and power ratings up to 1000 MVA
- Small and medium power transformers up to 245 kV and 120 MVA
- The design and rating of tertiary windings and coupling arrangements are adapted to customer’s requirements
- Autotransformers up to 1200 MVA and voltages up to 765 kV
- Generator step-up transformers up to 1000 MVA
Autotransformers
Compared with interconnection transformers of equivalent power flow, the autotransformer presents a lighter and more economically optimized solution which is possible whenever the voltage ratio is between 1 and 2. However, autotransformers have non-disconnected windings, meaning there is no galvanic insulation between the interconnected systems.
Characteristically for complex regulation arrangements, autotransformers impose a total mastership of dielectric phenomena. Designs for constant flux regulation at high voltages or booster schemes are part of GE’s mastery. For many years, GE been supplying very high rated autotransformers such as single phase up to 500 MVA and very high voltage up to 765 kV for networks all over the world.
Key features:
- Available up to 765 kV
- Designed for constant flux regulation at high voltages and booster schemes
- Advantages include compact footprint, lighter weight and lower losses