12 Units of S13-500kVA/35kV Transformers + Energy Storage for an Island Microgrid in the Philippines
Project Overview
HBTP supplied 12 units of S13-500kVA/35kV oil-immersed transformers for an island microgrid project in the Visayas region of the Philippines. The microgrid combines solar, wind, diesel, and battery storage to provide 24/7 power to a remote island community.
Project Background
The Philippines consists of over 7,000 islands, many of which lack reliable grid connection. This microgrid project replaces expensive and polluting diesel-only power with a hybrid renewable energy system, reducing electricity costs and improving reliability for island residents.
Customer Requirements
Requirements included: 500kVA capacity, 35kV/0.4kV ratio, S13 efficiency, suitability for hybrid microgrid operation with variable load profiles, corrosion-resistant construction for coastal island environment, and compliance with Philippine PEC standards.
Our Solution
HBTP supplied S13 transformers optimized for microgrid operation, including enhanced voltage regulation to handle the variable output from renewable sources. The corrosion-resistant construction withstands the island's salt-laden coastal air.
| Parameter | Specification |
|---|---|
| Model | S13-500/35 |
| Capacity | 500 kVA |
| Voltage Ratio | 35 / 0.4 kV |
| Efficiency | S13 |
| Application | Hybrid Microgrid |
| Standard | IEC / PEC |
Quality & Testing
All units passed routine electrical tests and salt spray corrosion testing. Special attention was given to voltage regulation performance under variable load conditions typical of microgrid operation.
Delivery & Installation
The 12 units were delivered by sea to Cebu, then by inter-island vessel to the project site. HBTP engineers supervised installation and provided microgrid-specific commissioning support.
Project Outcomes
The island now enjoys 24/7 reliable electricity with significantly reduced costs compared to the previous diesel-only system. The hybrid microgrid has become a showcase project for renewable energy deployment in remote island communities.
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