On the vast, blue ocean, modern aquaculture platforms are becoming crucial pillars of the "blue granary." However, the challenge of providing power far from land remains a key bottleneck constraining their stable operation and intelligent upgrade. How can clean, reliable, and economical off-grid power supply be achieved? HOMSUN Energy Storage has provided a perfect answer through an innovative practice.

Recently, the offshore aquaculture platform solar-storage-diesel off-grid power supply project, for which HOMSUN Energy Storage New Energy Co., Ltd. provided the overall energy storage solution, is about to commence operation. Based on the actual on-site conditions, the project innovatively delivered a "highly integrated solar-storage-diesel off-grid all-in-one solution". It provides round-the-clock intelligent power guarantee for the platform's daily lighting, circulating water pumps, monitoring equipment, and living facilities, successfully setting a new benchmark for offshore off-grid energy application.

The Stringent Challenges of Offshore Off-Grid Power Supply

The offshore environment is complex and harsh. High humidity and salt spray pose significant challenges to equipment reliability. Limited maintenance space and inconvenient transportation demand systems that are extremely stable and simple to maintain. Simultaneously, project investment and long-term operational costs require careful calculation. Single diesel power supply or simple solar-storage combinations can no longer meet the comprehensive needs for stability, greenness, and economy.

The Highly Integrated Solar-Storage-Diesel Off-Grid Smart Microgrid

Facing these challenges, HOMSUN Energy Storage provided a tailored integrated solution. Its core is to build a complete, self-operated off-grid microgrid:

1. Trinity, Seamless Synergy: The system deeply integrates 22.5kW offshore photovoltaic panels, a 241kWh air-cooled energy storage cabinet (HS-SP241-F), and a diesel generator. Photovoltaics serve as the primary power source, energy storage performs energy regulation and storage, and the diesel generator acts as an emergency backup. The three work in synergy through an intelligent system to ensure 7x24 hours of uninterrupted power supply.

2. Highly Integrated, Not Simple Assembly: This is not a simple setup of "PV + storage cabinet + diesel generator". We provide an integrated off-grid power supply system. It internally integrates DCDC/MPPT modules, a Power Conversion System (PCS), an intelligent Energy Management System (EMS), and control logic. This achieves deep integration from power generation and storage to distribution, simplifying on-site deployment and enhancing system reliability.

   
   

   

3. Intelligent Dispatch, the Smart Brain: The system's "smart core" – the HOMSUN EMS – plays the role of the chief dispatcher.

• During ample sunlight, PV power is prioritized to directly supply the load, with surplus energy automatically charging the storage cabinet.

• At night or on rainy days when PV output is insufficient, the EMS seamlessly switches to the energy storage discharge mode to ensure stable power supply.

• Under extreme conditions, the diesel generator automatically starts to supplement power supply and automatically switches back once PV power recovers, maximizing the use of green energy. The entire process is unattended and can be monitored in real-time via a remote platform.

Precise Adaptation Based on Project Conditions

In the thermal management design of the energy storage system, we made precise decisions based on an in-depth analysis of this project's actual operating conditions:

• Application Scenario-Oriented: The project places the energy storage cabinet inside an air-conditioned container, providing a first layer of stable external temperature environment for the equipment. Furthermore, this project has smooth power demand, with charge/discharge rates consistently below 0.5C, making battery heat generation controllable.

• Internal Air-Cooling for the Cabinet: Through rigorous thermal design analysis, within the constant-temperature container environment and coupled with the forced air-cooling system inside the storage cabinet, it fully meets the heat dissipation requirements of the battery packs. This ensures stable system operation within a wide temperature range of -20°C to 50°C.

• Optimal Comprehensive Benefit: This solution, while ensuring safety and performance, balances the needs for initial investment cost and long-term operational convenience on the offshore platform. It avoids potential maintenance challenges complex systems might bring in special environments, making it a practical choice highly adapted to this scenario.

Safe and Reliable, As Always

Regardless of the chosen technical path, safety is always our cornerstone. Our pursuit of safety is uncompromising:

• The HOMSUN HS-SP241-F energy storage cabinet body boasts an IP21 protection rating (designable per scenario requirements) and offers C3-C5 grade anti-corrosion options, effectively resisting offshore moisture.

• Equipped with temperature, smoke, and combustible gas detectors along with a perfluorohexanone fire extinguishing system, it builds a dual fire protection barrier of active warning and rapid suppression.

• The BMS strictly adheres to safety standards such as UL60730 and GB/T34131-2017. It monitors battery voltage and temperature at a millisecond level, issuing immediate warnings upon detecting abnormalities to ensure stable and safe cell operation.

Project Value: Beyond Power Supply

The successful implementation of the HOMSUN offshore solar-storage project delivers value far beyond merely solving a platform's power problem; it represents a profound energy transition:

• Enhances Economic Value: Significantly reduces reliance on diesel, markedly cutting fuel costs and transportation risks. The integrated design lowers comprehensive investment and operational costs, notably shortening the investment payback period.

• Reliability Multiplied: Triple guarantee from solar, storage, and diesel with intelligent switching completely resolves stability concerns for off-grid power supply, ensuring uninterrupted aquaculture activities.

• Green and Environmentally Friendly: Primarily utilizing photovoltaics, it essentially achieves zero carbon emissions, providing strong support for the green construction of "green fisheries" and "marine ranches".

• Industry Demonstration Value: It provides a highly integrated, intelligent, reliable, and rapidly replicable mature solution template for various off-grid scenarios such as marine ranches, island development, and border outposts.

Thriving with the Ocean, Sailing with Energy Storage

The success of this South China Sea offshore aquaculture platform project is further proof of HOMSUN Energy Storage's deep cultivation of scenario-based solutions, showcasing our profound technical expertise in the field of off-grid smart energy system integration. In the future, we will continue to delve into energy storage technology innovation, providing customized, high-value smart energy overall solutions for more industries and more complex scenarios. Welcome to inquire about cooperation; we will tailor the optimal energy storage solution for you!