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PV Integrated Box Type Step Up Booster Substation
Compact Transformer

PV Integrated Box Type Step Up Booster Substation

The photovoltaic (PV) box-type step-up substation is a prefabricated, integrated grid-connection unit designed specifically for solar power plants, representing the optimal integration solution for megawatt-scale PV facilities. The system houses two high-efficiency PV inverters, a medium-voltage step-up transformer, and associated AC/DC, monitoring, communication, and auxiliary equipment within a mobile enclosure; as a manufacturer of these compact substations, we have not only enhanced system safety, reliability, transportability, and ease of installation but also improved overall system efficiency and power output.

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    Scope of Application

    Large-scale ground-mounted PV power plants

    This product is designed for centralized, megawatt-scale PV power plants that require long-term, continuous power generation.

    Large Ground Solar Farm

    Distributed rooftop PV

    This product offers significant advantages for rooftop PV systems—such as those on industrial facilities—that require a compact layout and rapid on-site installation.

    Distributed Rooftop PV

    Agrivoltaic power plants

    It is well-suited for agrivoltaic projects in mountainous, hilly, or coastal regions characterized by high humidity and significant temperature fluctuations.

    Agro-Photovoltaic Station

    Product Description

    • 1 - This product features an independent three-compartment layout (isolating the high-voltage, transformer, and low-voltage compartments from one another) to ensure safety during maintenance operations.
    • 2 - Specifically designed for photovoltaic power plants, this low-loss transformer is capable of withstanding frequent power fluctuations and voltage surges.
    • 3 - It also incorporates comprehensive protection functions, meeting the technical requirements for grid-connected photovoltaic power generation.
    • 4 - Manufactured using a factory-prefabricated modular design, it reduces infrastructure investment costs for wind farms.
    • 5 - It supports the integration of remote communication modules and is compatible with Modbus and IEC 61850 protocols, ensuring seamless integration with wind farm intelligent monitoring platforms.
    product details
    product description

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    Product Features

    Reliable insulation

    All-weather, corrosion-resistant cabinet

    Features multi-layer anti-rust coating and an integrated dehumidification system; suitable for diverse environments, including coastal, desert, and high-altitude regions.
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    Multifunctional protection design

    Two inverters share a single high-efficiency isolation transformer, enhancing overall system efficiency.
    Integrated pre-assembly

    Integrated pre-assembly

    Electrical components are pre-assembled at the factory, reducing on-site installation workload by over 60%.
    High-altitude adaptability

    High-altitude adaptability

    Suitable for regions at altitudes up to 6,000 meters (Note: efficiency decreases at altitudes exceeding 3,000 meters).

    Main parameters

    Rated Voltage & Capacity: 0.69kV/10.5kV, 0.69kV/35kV; capacity range 800kVA to 30000kVA customized on demand.

    Cooling Mode: ONAN natural oil cooling, optional ONAF forced air cooling for continuous variable load.

    Enclosure Protection Grade: Cabinet IP54, transformer tank fully sealed to block sand, rain, salt fog and dust.

    Communication Protocol: Standard Modbus RTU/TCP, compatible with IEC61850 wind power centralized monitoring system.

    Execution standards

    VCG211294761765
    IEC 60076
    International standard for oil immersed power transformers
    IEC 62271
    High voltage switchgear and control assembly standard
    IEC 61400
    International technical standard for wind turbine power generation systems
    GB/T 19963
    Chinese national grid connection specification for wind power plants

    Technical advantages

    VCG211335853348

    We at Hanzhong Xinsanhuan build our PV box booster stations to fit unstable solar power output. Our custom transformers cut internal power loss, letting solar farms generate more electricity year-round.We at Hanzhong Xinsanhuan build our PV box booster stations to fit unstable solar power output. Our custom transformers cut internal power loss, letting solar farms generate more electricity year-round.. The units are fully pre-assembled and tested at the factory, simplifying on-site installation and reducing civil engineering costs. With a corrosion-resistant and moisture-proof enclosure, they ensure long-term, stable operation in diverse environments, including mountainous and coastal regions. The equipment comes with comprehensive grid-connection protection and supports remote monitoring. We operate our own complete production line, offering customizable specifications and guaranteed supply and after-sales support for both domestic and international PV projects. Please feel free to contact us at any time.