Project Cases

A:Project Overview

This 35kV prefabricated box substation for Africa solar power plant is developed specifically for large-scale photovoltaic projects in remote desert areas. Solar power plant procurement teams often face three core challenges: harsh desert corrosion and dust, lack of on-site construction and maintenance teams, and long lead times for on-site assembly. This project was engineered to solve these pain points, ensuring reliable power distribution for solar farms with minimal on-site work.

One of the most critical concerns for the client was equipment corrosion and damage caused by desert conditions. In Africa, the combination of high temperatures, strong UV radiation, and sand storms can quickly degrade standard outdoor electrical equipment. To address this, our 35kV prefabricated box substation for solar power plants features a full anti-corrosion coating, including hot-dip galvanized steel frames and UV-resistant paint. All internal components are sealed in dust-proof enclosures, preventing sand and moisture from entering the cabinet. This design ensures the substation can operate continuously in desert environments without frequent maintenance.

The second major worry was the lack of skilled on-site labor. Building a traditional concrete substation requires local construction teams, which are often scarce in remote solar farm locations. Our prefabricated design eliminates this problem entirely. The entire substation is fully assembled and tested at our factory, with all components pre-installed and pre-wired. It is delivered as a single, ready-to-deploy unit, requiring only basic foundation work and connection to the solar panels and grid. This plug-and-play design cuts on-site installation time from weeks to just a few days, eliminating the need for specialized construction crews.

Thirdly, the client was concerned about long-term maintenance support in the remote area. Before shipment, every 35kV prefabricated box substation undergoes full factory acceptance testing, with detailed maintenance manuals and remote monitoring capabilities built in. The modular design allows for quick replacement of faulty components without shutting down the entire plant. We also provided the client with a 2-year on-site maintenance package and a local spare parts supply agreement, ensuring they have the support they need even in the most remote locations.

B: Key Technical & Customization Solutions

To meet the specific needs of the Africa solar power plant, we made several key customizations to the 35kV box substation:

• Desert Adaptation: Added a reinforced air filtration system to block fine desert sand from entering the ventilation units, paired with high-temperature resistant insulation to withstand 50°C ambient temperatures. The enclosure is coated with anti-corrosion paint and hot-dip galvanized steel frames to resist UV radiation and salt spray, extending service life in harsh conditions.
• Plug-and-Play Design: All primary and secondary components are pre-connected at the factory, with standardized connectors for the solar array and grid, eliminating wiring errors on site. The entire unit is pre-tested, calibrated, and ready for deployment, requiring only basic foundation work.
• Remote Monitoring: Integrated SCADA-compatible monitoring systems, allowing the client to track voltage, current, and equipment status from their central control room, even if the substation is located hundreds of kilometers away.

C: Project Results & Client Feedback

Since the commissioning of this 35kV prefabricated box substation for Africa solar power plant, the equipment has maintained stable operation through multiple sand storms and extreme temperature cycles. The client reported that the plug-and-play design saved them over 2 weeks of on-site construction time, and the anti-corrosion coating has kept the equipment in excellent condition despite the harsh environment. The remote monitoring system has allowed their team to quickly identify and resolve minor issues before they escalate, reducing downtime significantly. This project has since led to repeat orders for additional substations for the client’s expansion projects across the region.

D: Inquiry