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Our specialized grid application is tailored to overcome power limitations. By aligning the configured grid-to-load power with the rated transformer capacity or limitation value from the grid company , the Energy Management System (EMS) efficiently controls the Power Conversion System (PCS) to discharge the battery. This streamlined process effectively bridges the gap between the required load power and the rated transformer capacity, ensuring optimal power management and grid compatibility.
Example Scenario:
Parameters:
Operational Overview:
Real-time grid-to-load power (detected by the bidirectional meter): X (variable, continually changing based on real-time demand).
Condition 1: Adjustable Power of PCS is more than the difference between Real-time grid-to-load power and configured grid-to-load power
EMS promptly instructs the PCS to adjust charging or discharging with a fixed power equal to the difference between Real-time grid-to-load power and configured grid-to-load power.
When the real-time load power is 160 kW, PV real-time power is 30 kW:
As the PV is generating less power than the load needed, the load will get energy from the grid. EMS detects the power from grid to load is 130 kW (160-30) and instructs the PCS to initiate battery discharging with 60 kW (130-70), equal to the difference between Real-time grid-to-load power 130 kW and configured grid-to-load power 70 kW. Then, grid-to-load will decrease to 70 kW as configured.
If real-time load power remains the same as 160 kW, PV real-time power increases to 160 kW:
As the load power is the same, PV power increases by 130 kW. The real-time grid-to-load power becomes -60 kW (70-130). EMS adjusts PCS working power with 130 kW (70+60), equal to the difference between Real-time grid-to-load power -60 kW and configured grid-to-load power 70 kW. PCS initially charges the battery with 70 kW (130-60).
If real-time load power remains the same as 160 kW, PV real-time power decreases to 0 kW:
As the load power is the same, PV power decreases by 160 kW, and the grid-to-load power becomes 230 kW (160+70). EMS instructs to adjust PCS working power with 160 kW (230-70), equal to the difference between Real-time grid-to-load power 230 kW and configured grid-to-load power 70 kW. PCS initially discharges the battery with 90 kW (160-70).
If real-time load power decreases to 80 kW, PV real-time power decreases to 0 kW:
As the PV real-time power is the same, the real-time load power decreases by 80 kW, and the grid-to-load power becomes -10 kW (70-80). EMS instructs to adjust PCS working power with 80 kW (70+10), equal to the difference between Real-time grid-to-load power -10 kW and configured grid-to-load power 70 kW. PCS initially discharges with 10 kW.
Condition 2: Adjustable Power of PCS is equal to or less than the difference between Real-time grid-to-load power and configured grid-to-load power
EMS instructs the PCS to work with the configured charging and discharging power. The grid-to-load power is equal to the difference between real-time PCS working power and adjustable power of PCS.
If real-time load power remains at 80 kW, PV real-time power increases to 160 kW:
As the real-time load power is the same, PV real-time power increases by 160 kW, and the grid-to-load power becomes -90 kW (70-160 kW). EMS instructs to adjust PCS working power to 90 kW, equal to PCS configured charging and discharging power because the Adjustable Power of PCS (90+10 kW) is less than the difference between Real-time grid-to-load power and configured grid-to-load power (70+90 kW). PCS initially charges with 90 kW, and Real-time grid-to-load power increases to 10 kW, equal to the difference between real-time grid-load power and adjustable power of PCS (100-90 kW).