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During mains power outages, the grid-forming energy storage provides seamless voltage and frequency support
The microgrid system prioritizes PV generation consumption to maximize PV utilization and economic benefits
Implement hierarchical load control to ensure basic critical loads receive off-grid power supply for over 8 hours, with surplus power allocated to other daily loads

Resolve prolonged overload issues in certain transformer areas during peak demand periods
Address power supply shortages and high randomness of EV charging demands that exceed transformer area capacity
1. The transformer area forms an AC/DC hybrid microgrid through flexible DC interconnection devices, achieving interconnection and mutual support between zones. 2. The master station and local cooperative control devices perform time-sharing and multi-scale automatic control for interconnected zone operation, realizing optimal dispatch of generation-grid-load-storage

Improve power supply reliability
Resolve overvoltage issues during high PV generation periods
Mitigate power imbalance between transformer areas
1. When a transformer area fails, the coordination controller rapidly responds for fault power transfer. 2. Flexible DC power transfer combined with energy storage absorbs PV generation to address PV overvoltage. 3. The system automatically calculates power demand for each area, performs power transfer, and balances load rates in real-time

1. Configure PV and energy storage systems for grid-connected operation under normal conditions, primarily powered by PV-storage with the grid as backup.
2. Daytime PV generation supplies village loads, excess power is stored in energy storage cabinets without grid feed-in, nighttime power is supplied via storage when PV is inactive.
3. The system operates stably and reliably, with only 2 grid recharges totaling under 3 hours within three months