Factory-direct distribution transformers & substations · Anqing, Anhui, China
WhatsApp & email: david@hengyuanpower.com · +86 187 5568 0508
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Step-up transformers and substations for wind, solar and storage

Step-up transformers and packaged substations for wind farms, photovoltaic plants and battery storage — including the cold, coastal and high-altitude sites that ordinary catalogues ignore.

The problem we solve

Equipment that is still there in year fifteen

Renewable sites are hard to reach and expensive to visit. A transformer that fails on a ridge line costs far more than the price difference between a good unit and an average one. The design has to survive wide temperature swings, condensation, dust, salt air and, at altitude, reduced dielectric strength.

We build step-up and station service transformers for wind, solar and storage projects, and we hold a utility model patent for an outdoor oil-immersed transformer designed for high-altitude wind power stations — the exact condition that causes standard units to fail.

  • Wind power step-up transformers and wind turbine packaged substations
  • Photovoltaic step-up transformers and PV packaged substations
  • Battery energy storage station service transformers
  • Cold-climate and high-altitude options: low-temperature steel, anti-condensation heating, altitude-corrected clearances
Oil-immersed transformers for renewable step-up Distribution transformers ready for renewable energy projects

Typical configurations

Ratings are set by the inverter or turbine output, the collector system voltage and the site conditions. Tell us the site and we will propose the arrangement.

ApplicationTypical configuration
Wind turbine step-upPackaged substation with oil-immersed transformer, 900–2500 kVA, 0.69/33 kV or 0.69/35 kV, mounted at the tower base
Wind farm collector substationOil-immersed transformer, 1250–2500 kVA, 33/35 kV, ONAN or ONAF, cold climate design
High altitude wind siteOutdoor oil-immersed transformer with altitude-corrected insulation clearances and low temperature rise
Photovoltaic plantPV step-up packaged substation, 1000–2500 kVA, 0.4/35 kV or 0.8/35 kV
Battery storageDry-type or oil-immersed transformer for station service and converter step-up
Coastal or dusty siteIncreased creepage bushings, sealed tank, corrosion protection and IP-rated enclosures

Site conditions drive the design

Altitude, ambient range, humidity, dust and seismic level are treated as design inputs, and stated on the data sheet we send back.

Losses that pay back

On a renewable site the transformer runs at high load for years. Class-1 energy efficiency units often pay for themselves within the project life.

Container logistics

We plan the packing, reinforcement and loading for remote sites, and supply the drawings needed for site lifting and foundation work.

Also used in

Grid & Utility

Distribution transformers and substations for networks and utilities.

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Industrial & Commercial

Dry-type transformers and LV assemblies for plants and buildings.

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All products

Eight product families, 30 to 2500 kVA, 6.6 kV to 35 kV.

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Describe the site, not just the rating

Altitude, ambient temperature, humidity, dust and access. Those five things decide whether a standard unit survives, and they cost nothing to tell us.

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