Wind-Solar-Storage AC-Coupled Integrated System

The PV, wind power, and battery energy storage systems are coupled through a 400V AC bus. During the day, PV generation prioritizes load supply, with surplus energy absorbed by the storage system. When PV power is insufficient or transformer feeder power exceeds the upper limit, the energy storage system automatically discharges, achieving PV power fluctuation suppression and dynamic feeder capacity expansion. Meanwhile, the battery storage system leverages grid price differentials for peak-valley arbitrage revenue.

The EMS implements grid peak-valley arbitrage control and intelligent dispatch between wind power, PV output, and battery power. It supports peak-valley energy statistics and revenue statistics, with PV generation and battery charge/discharge statistics categorized by day, month, year, and total, along with Excel report export support.

The EMS system supports remote unattended operation with local execution of power control strategies, ensuring system operation is unaffected even if the remote network fails. The edge controller and cloud independently store system operation data, allowing local records to be retrieved for fault tracing in case of network failure. EMS operation strategies can be remotely modified anytime and anywhere via web or mobile app, and essential system operation parameters can be opened to users for self-maintenance.