POWER SUPPLY/DEMAND MONITORING TERMINAL, POWER SUPPLY/DEMAND MONITORING CONTROLLER, POWER SUPPLY/DEMAND MONITORING CONTROL SYSTEM, POWER SUPPLY/DEMAND MONITORING METHOD, POWER SUPPLY/DEMAND MONITORING CONTROL METHOD, AND POWER SUPPLY/DEMAND CONTROL METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a low-cost power supply/demand monitoring control system, having a configuration that is not complex, is low cost and will not have the problem of installation space. PSOLUTION: When a power provision time zone is started, the processing section 24 of a power supply/demand monitoring terminal 20 repeats the operation for integrating the value obtained, by subtracting the reverse power flow from a received power as a purchased power, if the received power is equal to or larger than the reverse power flow; otherwise integrating the value obtained by subtracting the received power from the reverse power flow as a provision power, until the power provision time zone ends. When a power return time zone is started, the processing section 24 repeats the operation for integrating the value obtained, by subtracting the reverse power flow from the received power as a return power, if the received power is larger than the reverse power flow, until the power return time zone ends or the integrated return power exceeds a returnable electric energy. PCOPYRIGHT: (C)2008,JPO&INPIT