| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that conventionally in a house with plural power generators (including a photovoltaic power generation system and a residential fuel cell), outputs from the plural power generators are collectively connected to an auxiliary breaker in a distribution switchboard and a current transformer of the auxiliary breaker measures the whole generated power, so that it is impossible to know in details differences in a power generation amount and a power generation state due to differences in installation conditions and an operation time period between each of the plural power generators, which makes it difficult to perform energy-saving activity such as frequent switching of use of a load according to a state of each power generator.SOLUTION: A power display displays a generated power value obtained through an operation on a power generation output current of each of plural power generators measured by an individual current sensor and a voltage value from a distribution switchboard, for each of the plural power generator. The power display also displays values of power sold to and purchased from a commercial power supply and a power consumption value in a house, thereby enabling a power state of the whole house to be known in details. |
