Patent ID: 11859833
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H  Y | IPC F  H

Claim 0:
1. A control method for a water heater comprising:
acquiring an instruction to suppress in a specified period supplying of a generated power generated by a power generator installed in a power-consuming area to a commercial electrical power system;
estimating, upon acquiring the instruction, the generated power during a lost power occurring in the specified period, based on a measurement value of a power output from the power generator in a period prior to the specified period; and
commanding a water heater installed in the power-consuming area to perform a water heat-up operation when a predetermined condition is satisfied during the lost power occurring in the specified period, wherein
the power generator comprises a photovoltaic panel and a power conditioning system,
the lost power (i) occurs due to the power conditioning system suppressing the power output from the power generator in the specified period and (ii) indicates power decrease, of total consumed power relative to generated power capable of being output, and is an amount of the power which is not output from the power conditioning system to either of the commercial electrical power system or the power-consuming area while the power is being generated by the photovoltaic panel, and
the predetermined condition is satisfied when a consumed power of the power-consuming area forecast for when the water heater performs the water heat-up operation is smaller than the estimated generated power.