Operation planning method, operation planning device, heat pump hot water supply system operation method, and heat pump hot water supply and heating system operation method
First Claim
1. An operation planning method performed in a system including a power generation device which is a photovoltaic device, a first electric load which operates using power generated by the power generation device, and a second electric load which generates heat using power generated by the power generation device, said operation planning method designing an operation plan for the second electric load, and comprising:
- predicting, for individual unit time periods, an amount of power to be generated by the power generation device and an amount of power to be consumed by the first electric load; and
designing the operation plan for the second electric load to cause the second electric load to operate and generate heat by consuming reverse power during an operation period which includes, among the time periods, a time period in which an amount of the reverse power is the largest, the reverse power being calculated by subtracting the amount of power to be consumed from the amount of power to be generated,wherein the second electric load includes a heat generator which generates heat using power generated by the power generation device, heat storage which stores heat generated by the heat generator, and a radiator which radiates heat stored in the heat storage,wherein the predicting includes predicting an amount of heat to be radiated in reverse flow standby by the radiator during a reverse flow standby time period, the reverse flow standby time period being a time period in which the amount of power to be consumed exceeds the amount of power to be generated, andwherein said designing includes designing the operation plan for the operation period, the operation period being determined by selecting one or more of the time periods in descending order of the amount of reverse power until a total amount of time of the one or more selected time periods exceeds an amount of time required for the heat generator to generate the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby as predicted in said predicting, the operation plan being designed such that the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby is stored in the heat storage.
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Accused Products
Abstract
An operation planning method performed in a system including a power generation device, a first electric load operating using power generated by the power generation device, and a second electric load which generates heat using power generated by the power generation device. The operation planning method is performed to design an operation plan for the second electric load and includes: predicting, for individual unit time periods, an amount of power to be generated by the power generation device and an amount of power to be consumed by the first electric load; and designing the operation plan for the second electric load to operate during an operation period including the time period with the largest amount of reverse power, calculated by subtracting the amount of power to be consumed from the amount of power to be generated.
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Citations
16 Claims
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1. An operation planning method performed in a system including a power generation device which is a photovoltaic device, a first electric load which operates using power generated by the power generation device, and a second electric load which generates heat using power generated by the power generation device, said operation planning method designing an operation plan for the second electric load, and comprising:
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predicting, for individual unit time periods, an amount of power to be generated by the power generation device and an amount of power to be consumed by the first electric load; and designing the operation plan for the second electric load to cause the second electric load to operate and generate heat by consuming reverse power during an operation period which includes, among the time periods, a time period in which an amount of the reverse power is the largest, the reverse power being calculated by subtracting the amount of power to be consumed from the amount of power to be generated, wherein the second electric load includes a heat generator which generates heat using power generated by the power generation device, heat storage which stores heat generated by the heat generator, and a radiator which radiates heat stored in the heat storage, wherein the predicting includes predicting an amount of heat to be radiated in reverse flow standby by the radiator during a reverse flow standby time period, the reverse flow standby time period being a time period in which the amount of power to be consumed exceeds the amount of power to be generated, and wherein said designing includes designing the operation plan for the operation period, the operation period being determined by selecting one or more of the time periods in descending order of the amount of reverse power until a total amount of time of the one or more selected time periods exceeds an amount of time required for the heat generator to generate the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby as predicted in said predicting, the operation plan being designed such that the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby is stored in the heat storage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An operation planning device in a system including a power generation device which is a photovoltaic device, a first electric load which operates using power generated by the power generation device, and a second electric load which generates heat using power generated by the power generation device, said operation planning device designing an operation plan for the second electric load, and comprising:
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a predictor which predicts, for individual unit time periods, an amount of power to be generated by the power generation device and an amount of power to be consumed by the first electric load; and an operation planner which designs an operation plan for the second electric load to cause the second electric load to operate and generate heat by consuming reverse power during an operation period which includes, among the time periods, a time period in which an amount of the reverse power is the largest, the reverse power being calculated by subtracting the amount of power to be consumed from the amount of power to be generated, wherein the second electric load includes a heat generator which generates heat using power generated by the power generation device, heat storage which stores heat generated by the heat generator, and a radiator which radiates heat stored in the heat storage, wherein the predictor further predicts an amount of heat to be radiated in reverse flow standby by the radiator during a reverse flow standby time period, the reverse flow standby time period being a time period in which the amount of power to be consumed exceeds the amount of power to be generated, and wherein the operation planner designs the operation plan for the operation period, the operation period being determined by selecting one or more of the time periods in descending order of the amount of reverse power until a total amount of time of the one or more selected time periods exceeds an amount of time required for the heat generator to generate the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby as predicted by said predictor, the operation plan being designed such that the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby is stored in the heat storage.
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9. An operation method performed by a heat pump hot water supply system including a photovoltaic device, a heat pump hot water supply device, and an operation planning device, said operation method comprising controlling the system by the operation planning device, said controlling including:
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predicting an amount of power to be generated by the photovoltaic device and an amount of power to be consumed by an electric load; calculating an amount of reverse power by subtracting the amount of power to be consumed from the amount of power to be generated; predicting an amount of heat required in a reverse flow standby time period during which the amount of reverse power is zero; designing an operation plan which causes the heat pump hot water supply device to operate to store the predicted amount of heat and generate the heat by consuming the reverse power during an operation period which includes a time period in which the amount of reverse power is the largest, and further determining a heat storage target temperature to store the predicted amount of heat and setting a reverse power threshold value to the amount of reverse power with the lowest value among the one or more selected time periods; and controlling, based on the heat storage target temperature and the reverse power threshold value determined and set in said designing, starting operation of the heat pump hot water supply device at a point in time at which the reverse power as measured reaches or exceeds the reverse power threshold value during the operation period, and stopping operation of the heat pump hot water supply device at a point in time at which the predicted amount of heat is generated during the operation period. - View Dependent Claims (10, 11)
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12. An operation method performed by a heat pump hot water supply and heating system including a photovoltaic device and a heat pump hot water supply and heating device, the heat pump hot water supply and heating device including a hot water supply tank and heating device, the system including an operation planning device,
said operation method comprising controlling the system by the operation planning device, said controlling including: -
predicting an amount of power to be generated by the photovoltaic device and an amount of power to be consumed by an electric load; calculating an amount of reverse power by subtracting the amount of power to be consumed from the amount of power to be generated; predicting an amount of heat required in a reverse flow standby time period during which the amount of reverse power is zero; designing an operation plan which causes the heat pump hot water supply and heating device to operate to store the predicted amount of heat and generate the heat by consuming the reverse power during an operation period which includes a time period in which the amount of reverse power is the largest, and further determining a heat storage target temperature to store the predicted amount of heat and setting a reverse power threshold value to the amount of reverse power with the lowest value among the one or more selected time periods; and controlling, based on the heat storage target temperature and the reverse power threshold value determined and set in said designing, starting operation of the heat pump hot water supply and heating device at a point in time at which the reverse power as measured reaches or exceeds the reverse power threshold value during the operation period, and stopping operation of the heat pump hot water supply and heating device at a point in time at which the predicted amount of heat is generated during the operation period. - View Dependent Claims (13, 14, 15, 16)
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Specification