Located on a remote offshore island, this project aims to provide stable renewable energy support to the local community. The island environment presents extreme challenges, including high salt spray corrosion, intense humidity, and a small-scale grid with frequent fluctuations. To address these, we delivered an end-to-end customized equipment solution, covering everything from DC aggregation and AC grid-tie to high-voltage metering.
A total of 8 core electrical cabinets were deployed, forming a complete closed-loop for energy flow and system protection:
35kV High-Voltage Metering Switchgear (1 Unit): Ensures high-precision power measurement and revenue settlement at the high-voltage side (Class 0.2s accuracy).
AC Grid-Tied Protection Cabinets (4 Units): Facilitates a stable connection between inverter outputs and the utility grid, integrated with advanced anti-islanding protection logic.
DC Combiner & Distribution Panels (3 Units): Responsible for high-efficiency current aggregation from PV arrays, utilizing T2 pure copper busbars to minimize power loss and heat generation.
Island-Grade Corrosion Resistance: Heavy-duty stainless steel enclosures combined with specialized anti-salt mist coatings. Specifically designed for high-humidity and high-salinity environments with a service life of up to 25 years.
International Standard Components: Integrated with top-tier global brands such as ABB and CHINT, ensuring operational reliability and convenience for overseas maintenance.
Millisecond-Level Grid Safety: Equipped with a smart anti-islanding protection system to achieve millisecond-level fault disconnection, ensuring the stability of the island’s microgrid.
High-Efficiency Energy Gain: Optimized T2 pure copper busbar layout maximizes the reduction of internal resistance and heat, significantly improving overall power generation revenue.
Pre-Integrated Rapid Delivery: The modular pre-wired design drastically shortens the on-site installation cycle and reduces construction costs for overseas engineering.
Through the synergy of these electrical units, the project has successfully achieved a smooth transition of solar energy from DC to AC and from low voltage to high voltage. Currently, the system is operating stably, not only bridging the local power gap but also serving as a flagship demonstration project for distributed energy grid interconnection in the region.
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