Solar Transformer Station Step Up Transformer for PV Power Plant
10-28 2025 | By:
In a PV power plant, the transformer station often becomes a focal point — it houses the step-up transformer that bridges the photovoltaic generation side and the utility grid. ZTelec Yuguang specialises in providing these transformer-station solutions with high reliability, custom layout and brand integration.
What is a “transformer station” in a PV plant?
A transformer station includes the step-up transformer itself, switchgear (MV/LV), tap-changer, protection and sometimes SCADA monitoring. For solar plants, the station must handle variable loads, ambient extremes and continuous operation.
Step-up transformer types for solar stations
| Type | Typical Voltage Setup | Capacity Range | Location & Cooling | Ideal for Solar Station Case |
|---|---|---|---|---|
| Dry-Type Step-Up Transformer | 0.69 → 10 / 20 kV | 30 – 6 300 kVA | Indoor/Semi-outdoor air cooled | Compact station inside inverter building |
| Oil-Immersed Step-Up Transformer | 10 → 20 / 35 kV | 500 – 15 000 kVA | Outdoor yard, oil cooling | Utility-scale PV station yard installation |
| Pad-Mounted Liquid Filled Transformer | 480 V → 12.47 / 13.2 kV | 100 – 3 000 kVA | Pre-cast station, minimal footprint | Community/distributed PV power plant station |
Solar station case study
In a 50 MW PV power plant located in Iran, ZTelec Yuguang supplied a dedicated transformer station comprising a 5 000 kVA oil-immersed step-up transformer (35 kV class), Schneider MV switchgear and remote monitoring. The station was delivered as a pre-assembled unit, reducing construction and commissioning time by 20%.
2500kVA step-up transformer
Customisation options for your solar station
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Primary/secondary voltage according to grid
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Tap-changer design compatible with inverter output fluctuations.
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Choice of brands for the switchgear – ABB, Schneider, etc.
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Environmental adaptations (tropical, desert, coastal).
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Full turnkey station design or transformer-only supply.
Photovoltaic Step-Up Transformers
Padmount Liquid Filled Transformers
How ZTelec Yuguang supports your project
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Manufacturer credentials: ZTelec Yuguang is a direct manufacturer with a wide export footprint, capable of large-scale solar project delivery.
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Quality & service: Skilled in providing full documentation, factory test reports, and lifetime service support.
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Competitive pricing: Factory direct, no hidden middle-man mark-up.
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Brand ecosystem: Custom integration with ABB/Schneider ensures you can keep brand consistency and reliability.
If you are planning a PV power plant and need a reliable transformer station step-up solution, contact ZTelec Yuguang today with your site parameters (voltage, capacity, environment) and we will provide you with a tailored proposal.
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