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PV Boost Box-Type Substation

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Photovoltaic power generation is a technology that directly converts light energy into electrical energy by leveraging the photovoltaic effect at semiconductor interfaces. It is primarily divided into distributed and centralized systems, and both types of photovoltaic-generated electricity require step-up substations before being fed into the grid.

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Photovoltaic power generation is a technology that directly converts light energy into electrical energy by leveraging the photovoltaic effect at semiconductor interfaces. It is primarily categorized into distributed and centralized systems, and all grid-connected photovoltaic power requires the use of step-up substations.

(1) Photovoltaic Box-Type Substation

The box-type substation for photovoltaic systems primarily consists of low-voltage switchgear, a transformer, and high-voltage switchgear. Its main function is to step up the voltage of the electricity transmitted from inverters before sending it out to the power grid. These substations can handle capacities up to 3150 kVA, with casings typically made from color-coated steel sheets, galvanized steel with plastic coating, or even shipping containers. They achieve an IP54 protection rating, making them ready-to-use right out of the box and significantly reducing on-site installation efforts. This type of substation is ideally suited for distributed photovoltaic power plants.

(2) Inverter-Boost Integrated Unit

For centralized photovoltaic power plants, an innovative approach has been adopted to integrate inversion and step-up functionality into a single unit, enabling rapid deployment and streamlined maintenance while reducing construction costs. The modular inverters offer a single-unit capacity of 1,100 kW, with the option to scale up to a maximum of 4,400 kW. Equipped with oil-immersed transformers delivering an output voltage of 35 kV, these systems feature an IP65-rated enclosure, allowing for direct outdoor installation. Additionally, the equipment can operate effectively at altitudes of up to 5,000 meters. Each inverter module can function independently or be connected in parallel—simply plug-and-play, requiring no specialized maintenance personnel.

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PV Boost Box-Type Substation

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