| 摘要 |
An electric power meter separately measures an amount of electric power for purchase supplied from an electric power system and an amount of electric power for sale which is generated by an electricity generation device. The electric power meter detects a power flow of the electric power system and separately measures the amount of electric power for purchase and the amount of electric power for sale while distinguishing between the amount of electric power for purchase and the amount of electric power for sale on the basis of a direction of the detected power flow. |
