Photovoltaic Box-Type Transformer

1. Product Overview

The photovoltaic box-type transformer is a customized integrated power transformation and distribution equipment specially developed for solar photovoltaic power generation systems. Different from traditional ordinary box substations, this product is optimized and upgraded targeting the intermittent and fluctuating power output characteristics of photovoltaic power stations. It integrates high-voltage switchgear, power transformer, low-voltage distribution device, and intelligent protection monitoring system into a fully enclosed box structure.

As the core boosting and grid-connecting equipment of photovoltaic power projects, it mainly undertakes the tasks of collecting low-voltage electric energy generated by photovoltaic modules, boosting it to medium and high voltage, and realizing safe grid connection and power distribution. The whole machine adopts factory prefabricated integrated design, completing assembly, wiring and debugging before leaving the factory. It features on-site quick installation, no need for complex civil construction and wiring construction, which greatly shortens the construction cycle of photovoltaic power stations. It is widely applicable to centralized ground photovoltaic power plants, distributed rooftop photovoltaic projects and various new energy power generation scenarios.

2. Product Technical Parameters

The following are the mainstream standard technical parameters of photovoltaic box-type transformers, covering common specifications for industrial and commercial photovoltaic power generation scenarios, with customizable parameters according to project actual demands:

3. Product Features

3.1 High Power Generation Efficiency and Low Loss

Equipped with high-performance silicon steel sheet iron core and copper winding, the product effectively reduces no-load loss and load loss. The optimized electromagnetic structure design adapts to the unstable power output of photovoltaic modules caused by light changes. It can maintain efficient and stable operation under partial load conditions for a long time, avoiding excessive energy loss in the power conversion process, and effectively improving the overall power generation benefit of photovoltaic power stations.

3.2 Strong Environmental Adaptability

The box body adopts thickened galvanized steel plate and anti-corrosion spray treatment, with excellent rainproof, dustproof, anti-rust and anti-ultraviolet performance. It can operate stably in high temperature, low temperature, strong wind, rainy and other harsh outdoor environments. The fully sealed structure prevents internal equipment from being affected by moisture, dust and corrosive gases, which is very suitable for outdoor open-air installation conditions of photovoltaic projects.

3.3 Integrated and Compact Structure

All power distribution and transformation equipment is highly integrated in a single box, with a compact overall layout and small floor area. Compared with traditional discrete substation equipment, it saves more than 60% of installation space. The integrated design avoids wiring errors caused by on-site construction, and the standardized prefabricated structure supports rapid on-site hoisting and commissioning, greatly reducing project construction time and labor cost.

3.4 Comprehensive Intelligent Protection

Built-in intelligent relay protection device and surge protection module, which can realize automatic monitoring and rapid tripping protection for overcurrent, short circuit, overvoltage, undervoltage and earth faults. It is equipped with optional remote monitoring function, which can real-timely feed back equipment operating temperature, operating current, voltage and fault information. Staff can remotely grasp the equipment operation status, realize early warning and quick processing of faults, and ensure the safe and stable operation of the power grid.

3.5 Low Operation and Maintenance Cost

The whole machine has a simple and reasonable structural design, with fewer vulnerable parts and stable operating performance. It does not need frequent maintenance in daily operation. The modular design of internal equipment facilitates later inspection, disassembly and replacement of parts, effectively reducing daily operation and maintenance investment of photovoltaic power stations.

4. Application Scenarios

4.1 Centralized Ground Photovoltaic Power Plants

It is the main supporting equipment for large-scale ground photovoltaic power stations in deserts, Gobi and mountainous areas. It is used for centralized collection and boosting of electric energy generated by large-area photovoltaic arrays, meeting the high-capacity grid-connected power demand of centralized power stations, and adapting to long-term continuous outdoor operation in open and harsh environments.

4.2 Distributed Industrial and Commercial Photovoltaics

Suitable for rooftop photovoltaic projects of industrial factories, logistics parks, shopping malls and office buildings. The compact structure does not occupy production and operation space. It can match the decentralized power generation characteristics of building rooftop photovoltaic modules, realize on-site power consumption and surplus power grid connection, and help enterprises reduce electricity costs.

4.3 Agri-PV and Fishery-PV Complementary Projects

Applicable to photovoltaic power generation projects on agricultural greenhouses, fish ponds and tidal flats. The equipment has good anti-corrosion and moisture-proof performance, which can adapt to humid and weak corrosive working environments. The small floor area will not affect agricultural planting and aquaculture operations, realizing the organic combination of new energy power generation and agricultural and fishery production.

4.4 Other New Energy Power Generation Scenarios

It can also be used for small and medium-sized off-grid photovoltaic power stations, photovoltaic energy storage supporting projects, and temporary power supply supporting of new energy demonstration projects. It can flexibly adapt to different power generation scales and working condition requirements through parameter customization.

5. Product Maintenance and After-Sales Service

5.1 Daily Maintenance Guidelines

Daily maintenance is simple and manageable, mainly focusing on regular inspection and cleaning. It is recommended to clean the dust and sundries on the box surface and heat dissipation components every quarter to ensure unobstructed heat dissipation. Regularly check the tightness of wiring terminals, the integrity of box sealing strips and the normal operation of the protection device. For equipment operating in humid and corrosive environments, increase the inspection frequency of anti-corrosion parts and internal moisture-proof conditions. Regularly test the insulation performance and operating parameters of the transformer every year to ensure that the equipment operates within the standard range.

5.2 Fault Handling Suggestions

When the equipment triggers protection tripping or has abnormal noise and temperature rise, stop the machine for inspection immediately. It is forbidden to start the machine with faults. For simple faults such as loose wiring and surface dirt blockage, on-site personnel can handle them according to the operation manual; for complex faults such as internal component damage and parameter abnormality, contact professional after-sales technicians in time, and do not disassemble the equipment privately to avoid secondary damage and safety accidents.

5.3 After-Sales Service Guarantee

We provide a 3-year full-machine warranty and 10-year core component warranty for all photovoltaic box-type transformers. During the warranty period, any quality problem caused by product manufacturing will be solved with free maintenance and part replacement. We have a professional technical service team, providing 24-hour online technical consultation and fault response service. For on-site maintenance demands, we can arrange engineers to arrive at the site for processing according to the project location. In addition, we provide free pre-sale scheme customization and installation guidance services, and deliver detailed operation and maintenance manuals with the product to help customers use and maintain the equipment correctly.