| 摘要 |
PROBLEM TO BE SOLVED: To provide an energy management system employing power line communication so that simple and reliable communication with a user receiving electric power by a single-phase three-line system can be performed.SOLUTION: An energy management system comprises: a PLC modem 40 having a power line communication function including a relay function by being connected between voltage lines L1 and L2 at a three line aggregation place like a power meter at a user receiving electric power by a single-phase three-line system; a PLC modem 14 that is provided and attached to an electric appliance of the user and has a function to perform power line communication with the PLC modem 40 by being connected between the voltage line L1 and a neutral line N; a PLC modem 15 that, in a similar fashion, has a function to perform power line communication with the PLC modem 40 by being connected between the voltage line L2 and the neutral line N; and an energy management device 12 that collects information from a power line communication network made up of elements including the respective PLC modems, and transmits information to the network. |
