Generation Transformer Fundamentals
Step Up Transformers for Generation Projects
Review the voltage ratio, application duty and project inputs for generation projects.
A step up transformer raises AC voltage to connect a source to a higher-voltage network. Review the voltage ratio, application duty and project inputs for generation projects.
Define the two sides
Start with the generator or inverter AC output on the source side and the collector or grid voltage on the network side. For an ideal transformer, the voltage ratio follows the winding turns ratio. Record frequency, phase and grounding alongside both voltage values; three-phase winding connections affect the relationship between winding and line values.
The comparison below organizes the first project inputs. Confirm final ratings and connections against source equipment documents and the utility specification.
| Project point | What to record | Useful reference |
|---|---|---|
| Source side | Generator or inverter AC voltage | Source equipment data |
| Network side | Collector or grid voltage | Utility requirements |
| Duty | Power profile and connection | System study |
Connect the source duty to the design
Solar inverter and wind generation systems have different source profiles, equipment interfaces and grid connection conditions. Share source equipment data, the expected output profile and the connection study. The design review can then account for thermal duty, harmonics, protection and the applicable winding and insulation requirements.
Prepare an application-specific enquiry
Include a single-line diagram, project location, load or generation range, voltage schedule and required documentation. Note the source equipment, expected operating profile, frequency, phase, grounding, protection interface and any utility study. This gives the engineering team the context to route the enquiry to a solar, wind or high-voltage transformer family.
Frequently Asked Questions
Is the turns ratio enough to specify a step up transformer?
No. A complete selection also needs capacity, winding connection, insulation level, source duty, cooling, protection and applicable utility requirements.
Which Seatrust page covers solar project applications?
The solar farm transformer page covers inverter step-up and substation applications. Share the project voltage schedule and source equipment data so the duty can be reviewed.
Plan the transformer interface for your project
Review the source duty, network voltage and required documents with the relevant project and product teams.