0.72MW/2.1MWh Off-Grid Solar-Diesel Microgrid Power Supply Solution

This document presents a comprehensive off-grid solar-diesel microgrid power supply solution by Xiangtou Cloud Storage Technology Co., Ltd., designed for a mining area in Papua New Guinea. The system integrates 0.72MW photovoltaic generation with 2.1MWh energy storage and diesel backup to ensure reliable 300kW continuous load supply for up to 12 hours daily. Leveraging Papua New Guinea's abundant solar resources (5.7 hours daily sunshine), the solution includes detailed system architecture, energy storage specifications, battery management, and safety protocols. Key components include photovoltaic arrays, battery modules, high-voltage boxes, and off-grid converters. The microgrid can operate independently, providing stable power for remote off-grid locations. The document covers project background, system design, configuration lists, and compliance with international standards such as IEC and GB/T. This solution addresses energy access challenges in isolated areas, reducing diesel dependency and promoting sustainable energy use.