Grid-tied inverter and Smart meter system
The system consists of a grid-tied inverter and a smart meter（RMK）.
| No. | Name | Formula or value | Data Source | Description |
|---|---|---|---|---|
| 1、4 | Pv power | pac | Inverter real-time data | |
| 2、5 | Meter power | totalActivePower | Smart meter real-time data | > 0 sell electricity; < 0 buy electricity |
| 3、6 | Load power | No.1 - No.2 | Formula | |
| 7 、11 | PV daily power generation | eDay | Inverter real-time data | |
| 8、14 | Load power consumption | No.7 + No.9 - No.10 | Smart meter real-time data & Formula | ① Save the first packet of non-zero data of the day, and take 0 directly if it cannot be obtained; ② Subtract ① from the last packet of non-zero data of the day, and calculate the amount of electricity sold for the day |
| 9、15 | Import energy | totalBuyElectricity | Smart meter real-time data & Formula | ① Save the first packet of non-zero data of the day, and take 0 directly if it cannot be obtained; ② Subtract ① from the last packet of non-zero data of the day, and calculate the amount of electricity sold for the day |
| 10、13 | Export energy | totalSoldElectricity | Smart meter real-time data & Formula | ① Save the first packet of non-zero data of the day, and take 0 directly if it cannot be obtained; ② Subtract ① from the last packet of non-zero data of the day, and calculate the amount of electricity sold for the day |
| 12 | Self-consumption | No.7 - No.10 | Formula | - |
| 16 | Self-sufficiency | No.14 - No.15 | Formula | - |
Monthly, annual, and total data are aggregated using daily data