Renewable Energy · Project Reference

50 MW Solar Plant — Step-up Substation

A coordinated transformer and step-up substation approach for utility-scale photovoltaic generation and grid connection.

ApplicationUtility-scale photovoltaic plant
Project EnvironmentOutdoor renewable-energy site
EquipmentStep-up transformer and substation interfaces
Engineering PriorityInverter duty, grid connection and outdoor reliability
Project Brief

From application requirements to a controlled equipment basis

Each reference is presented around the engineering decisions that matter to selection, manufacturing, testing and site integration.

Project overview

A coordinated transformer and step-up substation approach for utility-scale photovoltaic generation and grid connection. Transformer selection, voltage-ratio confirmation, protection interfaces, drawings, testing and shipment documentation.

Key requirements

  • Coordinate inverter output with the collection network and grid-connection voltage.
  • Account for harmonics, cyclic loading, ambient temperature and outdoor exposure.
  • Keep transformer, switchgear, protection and enclosure interfaces aligned before production.
System & Equipment

The application and the equipment, shown together

A system-level view is paired with the relevant transformer or packaged-equipment detail.

Solar grid-connection architecture
Solar grid-connection architectureSystem relationship and project interfaces.
Step-up transformer equipment detail
Step-up transformer equipment detailRelevant construction, connection or manufacturing detail.
Engineering Response

How the requirements are translated into the equipment

Electrical, mechanical and documentation decisions stay connected through technical review and manufacturing release.

1

Electrical coordination

Voltage ratio, vector group, impedance and loss targets are reviewed against inverter and grid requirements.

2

Outdoor configuration

Cooling, enclosure protection, terminals and accessories are selected around site temperature, dust and installation layout.

3

Approval package

Drawings, data sheets, test plan and routine-test records are organized for EPC and customer review.

Project Workflow

A clear route from specification to delivery

Technical reviewConfirm single-line diagram, ratings, load duty, standards and site conditions.
Design approvalResolve clarifications and approve drawings, interfaces and document list.
Manufacturing & inspectionBuild to the approved basis with defined production and inspection checkpoints.
Testing & deliveryComplete required tests, final records, packing and shipment release.
Project Value

What the coordinated approach delivers

Results are expressed as practical project outcomes without replacing the customer’s approved technical specification.

  • A single coordinated equipment basis for transformer and grid-connection interfaces.
  • Clear technical documentation for approval, production and site installation.
  • Factory testing aligned with the confirmed project specification.

Planning a similar project?

Send the single-line diagram, rated power, voltage, load profile, applicable standard and site conditions. JINXING will organize the next technical review.

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