WO2021001963A1 - Dispositif de correction de plan de commande et procédé de correction de plan de commande - Google Patents

Dispositif de correction de plan de commande et procédé de correction de plan de commande Download PDF

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Publication number
WO2021001963A1
WO2021001963A1 PCT/JP2019/026466 JP2019026466W WO2021001963A1 WO 2021001963 A1 WO2021001963 A1 WO 2021001963A1 JP 2019026466 W JP2019026466 W JP 2019026466W WO 2021001963 A1 WO2021001963 A1 WO 2021001963A1
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WO
WIPO (PCT)
Prior art keywords
control plan
energy supply
correction
value
priority
Prior art date
Application number
PCT/JP2019/026466
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English (en)
Japanese (ja)
Inventor
義人 西田
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2019/026466 priority Critical patent/WO2021001963A1/fr
Priority to JP2019568277A priority patent/JP6725086B1/ja
Priority to CN201980098026.5A priority patent/CN114072833A/zh
Publication of WO2021001963A1 publication Critical patent/WO2021001963A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Definitions

  • the present invention relates to a technique for correcting a control plan.
  • renewable energy equipment such as solar power generators and wind power generators, power supply and reception equipment such as storage batteries and electric vehicles, power supply equipment such as generators, and thermoelectric supply equipment such as cogeneration systems.
  • power supply equipment such as generators
  • thermoelectric supply equipment such as cogeneration systems.
  • Utilize one or more equipment such as heat supply equipment such as chillers and eco-cute, heat transfer equipment such as heat storage tanks, and link these equipment to efficiently supply thermoelectric energy to consumer facilities such as factories and buildings.
  • An energy supply system is being developed.
  • Patent Document 1 in a system including various types of energy supply devices such as those that consume fuel such as a fuel cell to generate electric power and heat, and those that consume electric power such as Ecocute to produce hot water and the like. , It is disclosed that an energy supply plan will be formulated.
  • error There may be a discrepancy (error) between the planned value and the actual value of the energy supply equipment control plan (energy input / output plan).
  • the energy supply equipment is a solar cell, wind power generation, etc.
  • the amount of power generation depends on the environment, so the deviation (error) tends to be large.
  • Patent Document 1 does not consider the deviation (error) between the planned value and the actual value of such a control plan. If an attempt is made to correct the control plan so as to reduce such a deviation (error), the total energy amount of the entire system will be exceeded, and some energy supply devices cannot be corrected, resulting in a bias in the correction of the entire system. There is. As a result of the bias, the energy supply efficiency of the entire system may be inefficiently corrected. In addition, the correction increases the energy cost of the entire system, and the correction may result in poor energy supply efficiency in terms of cost.
  • the correction is a correction that increases the energy input to the energy supply device when the energy input is insufficient, or decreases the energy input device when the energy supply device is excessive, and increases or excessively increases the output of the energy supply device when the output is insufficient. It is a correction that makes it smaller in such cases.
  • An object of the present invention is to correct a control plan while suppressing deterioration of energy supply efficiency in a system including a plurality of energy supply devices.
  • the present invention preferentially supplies energy from a data acquisition unit that acquires actual values from a plurality of energy supply devices, a priority setting unit that sets priorities for a plurality of energy supply devices, and an energy supply device having a high priority. It is characterized by including a control plan correction unit that corrects the control plan of the device based on an actual value, and a control plan notification unit that transmits the corrected control plan to the energy supply device.
  • the present invention makes it possible to correct the control plan while suppressing deterioration of energy supply efficiency.
  • FIG. It is a block diagram of the consumer facility in Embodiment 1.
  • FIG. It is a block diagram of the control plan correction apparatus in Embodiment 1.
  • FIG. It is a figure which shows the example of the electric power demand data in Embodiment 1.
  • FIG. It is a figure which shows the example of the heat demand data in Embodiment 1.
  • FIG. It is a figure which shows the example of the electric power charge contract in Embodiment 1.
  • FIG. It is a figure which shows the example of the gas charge contract in Embodiment 1.
  • FIG. It is a figure which shows the example of the actual value of each energy supply device in Embodiment 1.
  • FIG. It is a figure which shows the example of the control plan of the power receiving point electric energy in Embodiment 1.
  • FIG. It is a figure which shows the example of the control plan of the charge / discharge electric energy of the storage battery in Embodiment 1.
  • FIG. It is a figure which shows the example of the control plan of the storage amount of the storage battery in Embodiment 1.
  • FIG. It is a figure which shows the example of the control plan of the heat transfer amount of the heat storage tank in Embodiment 1.
  • FIG. It is a figure which shows the example of the control plan of the residual heat amount of the heat storage tank in Embodiment 1.
  • FIG. It is a figure which shows the example of the deviation (error) between the control plan and the actual value in Embodiment 1.
  • FIG. It is a figure which shows the example of the priority setting database in Embodiment 1.
  • FIG. 1 It is a figure which shows the example of the correction of the control plan of the storage battery in Embodiment 1. It is a figure which shows the example of the correction of the control plan by the priority in Embodiment 1.
  • FIG. It is a figure which shows the processing flow of the control plan correction apparatus in Embodiment 1.
  • FIG. It is a hardware block diagram which shows the structure of the control plan correction apparatus in Embodiment 1.
  • FIG. It is a block diagram of the control plan correction device in Embodiment 2.
  • control plan correction device 101 according to the embodiment of the present invention will be described in detail below with reference to the drawings.
  • the present invention is not limited to this embodiment.
  • FIG. 1 is a block diagram of the consumer facility 102.
  • the consumer facility 102 has an energy load device 103 such as a power load device and a heat load device.
  • the consumer facility 102 includes renewable energy equipment such as solar power generators and wind power generators, power transfer equipment such as storage batteries and electric vehicles, power supply equipment such as generators, and thermoelectric power supply equipment such as cogeneration systems.
  • It has an energy supply device 104 such as a heat supply facility such as a chiller and an eco-cute, and a heat transfer facility such as a heat storage tank.
  • the energy supply device 104 and the power receiving point are shown separately.
  • the energy supply device 104 refers to a facility that supplies energy, and is a concept including a power receiving point.
  • the consumer facility 102 has a power receiving point for receiving electricity supply from a power company, and has a plug for receiving gas supply from a gas company.
  • the consumer facility 102 does not have to be one, and may be a community composed of a plurality of consumer facilities 102.
  • control plan correction device 101 may be held for each customer facility 102, or the control plan correction device 101 may be held as a facility shared by the community, and the control plan correction device 101 may be held.
  • the installation method is not limited.
  • FIG. 2 is a block diagram of the control plan correction device 101 according to the present embodiment.
  • the control plan correction device 101 is in a state of being able to communicate with the consumer facility 102.
  • the control plan correction device 101 formulates a control plan and corrects the control plan.
  • the present invention is not limited to this, and the control plan may be corrected by receiving the control plan created by the device external to the control plan correction device 101.
  • the control plan correction device 101 includes a data setting unit 201 that sets the characteristics and demand data of the energy supply device 104, a data acquisition unit 202 that acquires actual values of the energy load device 103 and the energy supply device 104 of the consumer facility 102, and data. It has a control plan formulation unit 203 that formulates a control plan for the energy supply device 104 during the planning target period using the input data set by the setting unit 201.
  • control plan is formulated by the control plan formulation unit 203.
  • the present invention is not limited to this, and the data acquisition unit 202 may acquire the control plan.
  • the control plan formulation unit 203 is located in an external device of the control plan correction device 101, and the data acquisition unit 202 acquires the control plan created by the external device.
  • a priority setting unit 204 that sets the priority of each energy supply device 104
  • a control plan formulation unit 203 that formulates a control plan
  • a data acquisition unit that acquires actual values of each energy load device 103 and each energy supply device 104.
  • the control plan correction unit 205 that corrects the control plan based on the priority of each energy supply device 104 set by the priority setting unit 204
  • the control plan correction unit 205 that calculates the control plan is notified to the energy supply device 104. It has a control plan notification unit 206.
  • the control plan means the fluctuation of the planned value of each device in units of time.
  • the details of the planned value will be described later.
  • the data setting unit 201 will be described.
  • the data setting unit 201 sets the characteristics of the energy supply device 104, the demand data of the energy load device 103, the contract information of the consumer facility 102, and the like.
  • a characteristic of the energy supply device 104 in the case of a renewable energy facility, there is a power generation model such as a solar power generator and a wind power generator. For example, it is a mathematical expression of the relationship between the amount of solar radiation and the amount of power generation, and a mathematical expression of the relationship between the wind speed and the amount of power generation.
  • the energy supply device 104 When the energy supply device 104 is a power transfer facility, there are charge / discharge models of storage batteries and electric vehicles as characteristics. For example, it is a mathematical expression of changes in charge / discharge power and the amount of electricity stored in a storage battery. In the case of power supply equipment, there is a power generation model of a generator as a characteristic. For example, it is a mathematical expression of the relationship between power generation and gas consumption.
  • the energy supply device 104 is a thermoelectric supply facility
  • the relationship between the amount of power generation and the amount of gas consumption and the relationship between the amount of power generation and the amount of heat supply are mathematically expressed.
  • the energy supply device 104 When the energy supply device 104 is a heat supply facility, there are chiller and eco-cute heat supply models as characteristics. For example, it is a mathematical expression of heat supply and power consumption. When the energy supply device 104 is a heat transfer facility, there is a heat model of a heat storage tank as a characteristic. For example, it is a mathematical expression of the relationship between the amount of heat transfer and the amount of residual heat.
  • the demand data of the energy load device 103 there are power demand data and heat demand data at each time of the power load device and the heat load device of the energy load device 103.
  • the interval of the acquired data is not limited, such as every minute and every hour. Examples of power demand data and heat demand data are shown in FIGS. 3 and 4.
  • FIG. 3 is a diagram showing an example of power demand data.
  • the horizontal axis represents time and the vertical axis represents power demand.
  • the demand for electricity is low at night and generally high from morning to night.
  • the unit of electric power is expressed in kWh.
  • FIG. 4 is a diagram showing an example of heat demand data.
  • the horizontal axis represents time and the vertical axis represents heat demand.
  • the unit of calorific value is expressed in kWh.
  • the contract information of the consumer facility 102 is the information that the consumer facility 102 has contracted with the electric company and the gas company, and there are a power charge contract and a gas charge contract at each time.
  • An example of an electricity rate contract and an example of a gas rate contract are shown in FIGS. 5 and 6.
  • FIG. 5 is a diagram showing an example of an electricity rate contract.
  • the horizontal axis represents time, and the vertical axis represents the unit price per electric energy (kWh).
  • the unit price of electricity charges changes from 8 yen to 20 yen between 10:00 and 18:00, indicating a contract pattern in which the unit price during the day is high.
  • FIG. 5 is an example, and the unit price may increase or decrease at a specific time, and the present invention is not limited to this example.
  • FIG. 6 is a diagram showing an example of a gas rate contract.
  • the horizontal axis represents time, and the vertical axis represents the unit price per gas amount (L).
  • the unit price is 10 yen per liter of gas, and the contract pattern does not change from hour to hour.
  • FIG. 6 is an example, and the unit price may increase or decrease at a specific time, and the present invention is not limited to this example.
  • the data acquisition unit 202 includes actual values (power consumption and heat consumption) of the power load equipment and heat load equipment of the energy load equipment 103 measured by using a measuring instrument at the consumer facility 102, and each energy supply equipment 104. Acquire the actual value such as the actual value.
  • the acquired actual values are, for example, the amount of power at the power receiving point, the amount of heat generated in the case of the renewable energy equipment of the energy supply device 104, and the charge of the storage battery and the electric vehicle in the case of the power transfer equipment.
  • Discharge power and storage capacity, generator power generation and gas consumption in the case of power supply equipment, cogeneration system power generation, heat supply and gas consumption in the case of thermoelectric power supply equipment, heat supply equipment In this case, it is the heat supply amount and power consumption amount of the chiller and eco-cute, and in the case of heat transfer equipment, it is the heat transfer amount, residual heat amount and tank temperature of the heat storage tank.
  • FIG. 7 is a diagram showing an example of actual values in each energy supply device.
  • FIG. 7 shows an example of the amount of electric power at the receiving point, the amount of electricity stored in the storage battery, and the amount of residual heat in the heat storage tank.
  • the actual value of 18 kWh as the electric energy of the power receiving point the actual value of 45 kWh as the stored amount of the storage battery, and the actual value of 49 kWh as the residual heat amount of the heat storage tank.
  • the control plan formulation unit 203 obtains the characteristics of each energy supply device 104 set by the data setting unit 201, demand data, contract information, and actual values of the energy load device 103 and the energy supply device 104 acquired by the data acquisition unit 202. Based on this, a control plan for each energy supply device 104 is formulated.
  • the control plan for the energy supply device 104 is formulated to meet the power and heat demands of the consumer facility 102 and to supply the required energy within the physical constraints of each energy supply device 104.
  • some control plans are formulated based on contract information so as to reduce electricity charges during the control plan formulation period.
  • control plans that formulate control plans to reduce gas charges and control plans that reduce the total of electricity charges and gas charges, and the conditions under which control plans are created are limited. Not done.
  • control plan refers to the transition of the planned value of the energy supply device 104 at each time.
  • the storage amount control plan is a plan of what time and how much storage amount is possessed.
  • the planned value means the value of the amount of electricity stored at each time.
  • control plan of the energy supply device 104 at each time at regular intervals (for example, 1 hour interval) for a fixed period (for example, up to 24 hours ahead) is calculated.
  • a control plan for the energy supply device 104 is formulated so as to satisfy the required energy demand at each time and minimize the total electricity charge and gas charge for a certain period.
  • the characteristics of each energy supply device 104 and the calculation of the total electricity charge and gas charge for a certain period are expressed by mathematical formulas as constraints and objective functions of the optimization problem. Then, formulate to solve the optimization problem using the optimization solver.
  • FIG. 8 is a diagram showing an example of a control plan for the amount of power received at the receiving point.
  • the horizontal axis represents time, and the vertical axis represents power receiving point electric energy (kWh).
  • FIG. 8 is a control plan for what time and how much power is required at the power receiving point.
  • the planned value of the control plan may be determined in units of one hour or in minutes, and the width of the control interval, which is the period for determining the planned value, is not limited.
  • FIG. 9 is a diagram showing an example of a control plan for the amount of charge / discharge power of the storage battery.
  • the horizontal axis represents time, the vertical axis represents the amount of power charged to the storage battery, and the minus represents the amount of power discharged from the storage battery.
  • FIG. 9 is a control plan for when and how much the storage battery is charged and discharged. The width of the control interval is not limited.
  • FIG. 10 is a diagram showing an example of a control plan for the amount of electricity stored in the storage battery.
  • the horizontal axis represents time, and the vertical axis represents the amount of electric power (kWh) stored in the storage battery.
  • the storage battery has two types of control plans: a control plan for the amount of charge / discharge power and a control plan for the amount of stored electricity.
  • a control plan for the amount of charge / discharge power and a control plan for the amount of stored electricity.
  • FIG. 10 is a control plan for when and how much electricity is stored in the storage battery. The width of the control interval is not limited.
  • FIG. 11 is a diagram showing an example of a control plan for the amount of heat transfer in the heat storage tank.
  • the horizontal axis represents time, the vertical axis represents the amount of heat output from the heat storage tank (kWh), and the minus represents the amount of heat input to the heat storage tank (kWh).
  • FIG. 11 is a control plan for inputting and outputting how much heat to and from the heat storage tank at what time.
  • the width of the control interval is not limited.
  • FIG. 12 is a diagram showing an example of a control plan for the amount of residual heat in the heat storage tank.
  • the horizontal axis represents time, and the vertical axis represents the amount of residual heat (kWh) in the heat storage tank.
  • the heat storage tank has a control plan for the amount of heat transfer, a control plan for the amount of residual heat, and two types of control plans. The number of control plans is not limited to two.
  • FIG. 12 is a control plan for what time and how much heat the heat storage tank has. The width of the control interval is not limited.
  • the priority setting unit 204 sets the priority of each energy supply device 104.
  • the control plan formulated by the control plan formulation unit 203 formulates the characteristics of each energy supply device 104 and solves the optimization problem to formulate the control plan.
  • FIG. 13 is a diagram showing an example of a deviation (error) between the control plan of the storage battery and the actual value.
  • the planned value of the control plan for the charge / discharge power of the storage battery is fixed at 28 kW.
  • FIG. 13 shows, as an example, a control plan from a correction time point, which is a time point at which correction is to be made, to a specific time point. Since there is a certain relationship between the charge / discharge power and the amount of electricity stored, when the planned value of the control plan for the amount of charge / discharge power is 28 kW, the planned value of the control plan for the amount of electricity stored is from 20 kwh to 45 kwh in a certain period. It will be charged.
  • FIG. 13 it is a control plan that charges up to 29 kwh at a certain point in time. However, the actual value is charged only up to 25 kwh, and the actual value is lower than the planned value, which is an example in which a deviation (error) of 4 kwh occurs. It can be seen that if charging is continued without changing the planned value of charge / discharge power as it is, the deviation (error) between the planned value and the actual value increases with time.
  • the deviation (error) is left as it is and the control is continued, the required energy cannot be supplied, the energy is used more than necessary, and the energy cost increases. Therefore, in order to correct the deviation (error), it is necessary to revise the control plan of each energy supply device 104. However, if the control plans of all the energy supply devices 104 are modified to meet the target values, the energy cost may increase and the energy consumption may increase.
  • the target value means a planned value arbitrarily selected from a plurality of planned values of the control plan.
  • the planned value may be selected and set as the target value according to the control interval of the control plan (1 hour in the previous example), or the planned value may be set as the target value by deciding the time such as 3 hours or later from the correction time.
  • the method of selecting the target value is not limited. From this point onward, the time when the target value is set is referred to as the target value time point.
  • the energy supply amount of the entire consumer facility 102 is limited, and if the planned value of a specific energy supply device 104 is unnecessarily corrected, it is preferable for the energy supply of the other energy supply device 104. It may have no effect.
  • the energy supply device 104 which needs to preferentially reduce the deviation (error), is set in the form of priority.
  • FIG. 14 is a diagram showing an example of the priority setting database 209. It is a figure which shows the example of the priority setting. This is an example of setting priorities for a consumer who holds a storage battery, an electric vehicle, and a heat storage tank in the consumer facility 102.
  • the priority of the power receiving point is 3
  • the priority of the storage battery is 1, and the heat storage tank.
  • the priority of is 2, and the priority of the storage battery is the highest.
  • the priority may be increased in order from the energy supply device 104 having the largest difference between the planned value and the actual value. By doing so, the energy supply device 104 having a worse energy supply efficiency can be corrected preferentially, so that the control plan that suppresses the deterioration of the energy supply efficiency of the entire system can be corrected.
  • the energy cost that increases by correcting the energy supply device 104 is calculated for each energy supply device 104, and the energy cost increase is increased in order from the energy supply device 104 that has the smallest increase. May be good.
  • the energy cost can be calculated from the correction value, which is the corrected value of the planned value, and the contract information that determines the unit price of energy.
  • the energy cost can be calculated by a known method, and the calculation method is not limited.
  • the priority may be arbitrarily set by the user, or may be set by receiving the priority specified by an external device, and the method of specifying the priority is not limited.
  • the priority setting database 209 may be provided in the external device, and the installation location is not limited.
  • the numerical value of the higher priority is reduced, but the present invention is not limited to this, and the higher the priority of the higher numerical value is not limited.
  • the control plan correction unit 205 controls each energy supply device 104 created by the control plan formulation unit 203 based on the actual values at the time of correction of each energy load device 103 and each energy supply device 104 managed by the data acquisition unit 202.
  • the control plan is corrected in a period shorter than the control plan period (for example, up to one hour ahead), which is the period for formulating the control plan in the control plan formulation unit 203.
  • the interval at which this correction is repeated is hereinafter referred to as a correction interval.
  • This correction interval may be the same timing as the control interval, or may be arbitrarily determined such as every hour or every two hours.
  • control plan correction unit 205 determines that there is a difference between the actual value at the time of correction and the planned value, the planned value from the time of correction to the time of the target value so that the target value can be achieved from the actual value at the time of correction. To correct.
  • the difference between the actual value at the time of correction and the planned value exceeds a certain threshold value, it may be controlled to determine that the correction is made. Since there is often a difference between the actual value and the planned value, it is possible to prevent the correction process from being performed unnecessarily and suppress the load on the control plan correction device 101.
  • the control plan correction unit 205 corrects the control plan preferentially from the energy supply device 104 having a higher priority in the energy supply device 104 having a difference between the planned value and the actual value of the control plan.
  • correcting the control plan is synonymous with correcting the planned value of the control plan.
  • the period shorter than the control plan is set because, for example, if the control plan is set up to 24 hours ahead at 1-hour intervals, the control plan will be corrected at a certain point within 24 hours.
  • the timing of correction may be performed periodically, such as every 1 hour or 2 hours, or the actual value and the planned value of the formulated control plan are compared, and there is a discrepancy (error) between the actual value and the planned value.
  • the timing may be controlled so as to be corrected at the timing of occurrence, and the timing is not limited.
  • the end point of the control plan correction period of the control plan correction unit 205 from the planned values of the control plan of each energy supply device 104 of each control interval formulated by the control plan correction unit 203 (1 in this example).
  • the control plan is corrected by setting the planned value of (time ahead) as the target value (the amount of electricity stored in the storage battery and the electric vehicle, the amount of residual heat in the heat storage tank, etc.).
  • FIG. 15 is a diagram showing an example of correction of the control plan of the storage battery.
  • the planned value of the charge / discharge power control plan of the storage battery is constant at 28 kW.
  • the planned value of the charge / discharge force control plan is constant, the planned value of the charge / discharge amount increases at a constant rate based on the relationship between the charge / discharge force and the stored amount. More specifically, the planned value of the amount of electricity stored takes a value from 20 kWh to 45 kWh.
  • the amount of electricity stored is increasing at a constant rate.
  • it may be increased like an exponential function, and the method of increase is not limited.
  • the actual value and planned value of the amount of electricity stored may deviate (error) depending on the condition of the storage battery.
  • the planned value of the storage amount control plan is 29 kWh and the actual value is 25 kWh, which means that the battery cannot be charged more than the 4 kWh plan. If charging is continued as it is, the deviation (error) tends to increase steadily. Therefore, by correcting the planned value of the charge / discharge force control plan, the planned value of the storage amount control plan is also corrected.
  • the target value to the planned value of the amount of electricity stored, 45 kWh. Since the actual value at the time of correction is 25 kWh, the planned value of the charge / discharge force control plan is corrected from 28 kWh to 34 kWh so that the actual value 25 kWh at the time of correction becomes 45 kWh at the time of the target value.
  • the power to be charged increases, so that the speed at which the storage battery is charged becomes faster, and the control plan for the amount of electricity stored becomes steeper from the actual value at the time of correction toward the target value, which is the target value of 45 kWh.
  • the planned value of the charge / discharge force can be calculated, for example, by substituting the actual value and the target value into the relational expression between the charge / discharge amount and the stored amount. Since the calculation method is a general method, it will not be described here.
  • the planned value of the control plan of each energy supply device 104 is corrected based on the priority of each energy supply device 104 set by the priority setting unit 204.
  • a consumer who holds one storage battery, one electric vehicle, and one heat storage tank in the consumer facility 102 will be described as an example, and the correction of the planned value of the control plan based on the priority will be described with reference to the example of FIG.
  • FIG. 16 is a diagram showing an example of correction of the control plan according to the priority. As shown in FIG. 16, all the devices may not operate according to the control plan created by the control plan formulation unit 203, and the target values of all the devices may not be satisfied. In such a case, assuming that the priority is set in the order of "storage battery> heat storage tank> power receiving point" in the priority setting unit 204, the control plan of the storage battery is corrected so as to reach the target value (storage amount).
  • the control plan for the heat storage tank is corrected so that it does not reach the target value (residual heat amount) but reaches the target value as much as possible.
  • the control plan of the power receiving point does not have to reach the target value, but it is corrected by the correction of the control plan of the control plan of the charge / discharge power of the storage battery.
  • the control plan of the storage battery By correcting the control plan of the storage battery, the required power increases and the power at the receiving point increases, so the control plan is corrected using the increase as the planned value.
  • the planned value of the charge / discharge power control plan is corrected so as to satisfy the target value, and the planned value of the storage amount control plan is corrected.
  • the planned values of the control plan for the charge / discharge power and the storage amount are corrected to the maximum within the limits of the total energy supply amount and the energy cost of the entire consumer facility 102 (energy supply equipment).
  • the correction is made so as to satisfy the target value, but if this is not possible, the correction may be made so as to approach the target value, or the largest amount of correction may be made according to the priority. Good.
  • the weighting of the correction ratio may be determined and controlled according to the priority.
  • the planned value of the heat transfer amount control plan and the planned value of the heat remaining amount control plan of the heat storage tank are corrected by the same method as the example of the storage battery explained above.
  • the control plan of the heat transfer amount of the heat storage tank sets the target value under the constraint of the total energy supply amount and the energy cost of the entire consumer facility 102. This is an example of a case where correction cannot be performed until it is satisfied.
  • the heat storage tank has a lower priority than the storage battery, so the control plan is corrected so as to meet the target value as much as possible.
  • this is done as much as possible, but the present invention is not limited to this, and the second largest amount of correction may be made according to the priority.
  • the actual value is affected by the correction of the planned value of the charge / discharge power control plan of the storage battery.
  • the amount of power at the power receiving point also increases. Therefore, the actual value of the electric energy at the receiving point is larger than the planned value, but since it has the lowest priority, the correction process is not performed.
  • the correction is not made, but the correction is not limited to this, and the correction may be made within the limits of the total energy supply amount and the energy cost of the entire consumer facility 102.
  • the electric power procured at the receiving point means the electric power procured from the outside of the consumer facility 102 such as the electricity market.
  • the energy supply device 104 supplies insufficient power from the power receiving point. Therefore, when the control plan for the charge / discharge amount of the storage battery is corrected and the charge amount to the storage battery increases, the actual value of the electric power at the receiving point may increase.
  • the power receiving point has a high priority and it is necessary to correct the power receiving point, correct the power receiving point control plan.
  • the deviation (error) between the actual value and the planned value becomes larger with the accumulated time, as shown in the expected value shown in FIG. Is corrected so as to reduce the amount of power at the receiving point so as to offset the above.
  • Reducing the amount of electric power at the receiving point means controlling so as to suppress the amount of electric power procured from the outside of the consumer facility 102 such as the electric power market.
  • the amount of power is increased and controlled to procure more power from the outside of the consumer facility 102 such as the power market. If the actual value of the power receiving point is smaller than the planned value, it is possible that the entire consumer facility 102 will run out of power, so it is preferable to raise the priority as much as possible for control.
  • the constraint conditions and the objective function of the optimization problem are expressed by mathematical formulas and the optimization solver is used in the same manner as the control plan formulation method of the control plan formulation unit 203. It may be calculated by solving an optimization problem. At that time, the difference between the target value and the correction value is expressed by multiplying the weight based on the priority in the objective function.
  • the objective function can be expressed by the following formula.
  • Objective function Evaluation function of energy cost, etc. + (battery priority x storage battery planning error) + (heat storage tank priority x heat storage tank planning error) ... + (priority of other equipment x planning of other equipment) error).
  • the planning error of the storage battery the target value of the storage battery-the correction value of the storage battery
  • the planning error of the heat storage tank the target value of the heat storage tank-the correction value of the heat storage tank
  • the planning error of other equipment the target value of other equipment- It is a correction value for other devices.
  • each correction value is calculated so that the objective function is minimized.
  • the target value means a planned value for a certain period (for example, 1 hour) from the time of correction.
  • the correction value means a planned value calculated by newly correcting.
  • the objective function becomes smaller as the planning error is smaller, although the priority value is larger. That is, the higher the priority value, the higher the priority, and the higher the priority value, the smaller the planning error.
  • the target value of the storage battery of the objective function means the target value of the amount of stored electricity.
  • the present invention is not limited to this, and the target value of the storage battery may be set as the target value of the charge / discharge power.
  • the correction value of the storage battery of the objective function means the correction value of the amount of stored electricity. This is also not limited, and the correction value of the storage battery may be used as the correction value of the charge / discharge power.
  • the planned value of the storage amount control plan after the correction time is set so that the corrected value of the storage amount can be reached from the actual value of the storage amount at the time of correction. to correct.
  • the planned value of the charge / discharge power control plan after the correction point is also corrected so that the corrected value of the stored amount can be reached from the actual value of the stored amount at the time of correction. Since the planned value of the charge / discharge power of the storage battery is derived from the relational expression between the charge / discharge power and the stored amount, the planned value of the charged / discharged power can be calculated if the planned value of the stored amount is known.
  • the target value of the heat storage tank of the objective function is the target value of the residual heat amount.
  • the present invention is not limited to this, and the target value of the remaining heat may be used as the target value of the amount of heat transfer.
  • the correction value of the heat storage tank of the objective function is the correction value of the remaining heat. This is also not limited, and the correction value of the heat storage tank may be used as the correction value of the heat transfer amount.
  • the remaining heat is controlled after the correction so that the corrected value of the remaining heat can be reached from the actual value of the remaining heat at the time of correction. Correct the planned value of the plan.
  • the planned value of the heat transfer amount control plan after the correction time is also corrected so that the correction value of the heat remaining amount can be reached from the actual value of the heat remaining amount at the time of correction. Since the planned value of the heat transfer amount in the heat storage tank is derived from the relational expression between the heat transfer amount and the remaining heat amount, the planned value of the heat transfer amount can be calculated if the planned value of the remaining heat amount is known.
  • the evaluation function of the energy cost or the like is a function including the planned value of the storage battery and the planned value of the heat storage tank, and is a function indicating how much the energy cost will be according to the value of the planned value. Is. Since this term is in the objective function, the correction value with lower energy cost can be obtained by minimizing the objective function. This section may be omitted if you are not aware of energy costs.
  • the calculation of the correction value is restricted by the total energy supply amount of the entire consumer facility 102.
  • the total value of the calculated correction values (correction values that require energy supply, for example, there are correction values for charge / discharge power and heat transfer) is the total energy supply for the entire consumer facility 102.
  • the objective function may be solved with constraints that do not exceed it.
  • the correction value can be calculated within a range that does not exceed the total energy supply amount of the entire consumer facility 102. This constraint may not be present if any amount of power can be supplied from the power receiving point and the total energy supply amount of the entire consumer facility 102 is not conscious.
  • the priority is set in the order of "storage battery> heat storage tank> power receiving point", but this is to secure the storage amount of the storage battery even if the power amount of the power receiving point temporarily increases. Means.
  • the priority when the priority is set in the order of "power receiving point> heat storage tank> storage battery", it means that the power amount of the power receiving point is set to the target value by securing the storage amount of the storage battery.
  • the control plan notification unit 206 notifies each energy supply device 104 of the corrected control plan calculated by the control plan correction unit as a control command value. Each energy supply device 104 is operated based on the corrected control plan.
  • the storage battery storage amount control plan and the charge / discharge power control plan are corrected, the storage battery is charged / discharged according to the power determined by the corrected charge / discharge power control plan.
  • the control plan for the remaining heat of the heat storage tank and the control plan for the amount of heat transfer are corrected, the heat transfer tank is subjected to heat transfer according to the amount of heat (electric power) determined by the corrected control plan for the amount of heat transfer. Will be done.
  • the correction of the control plan is synonymous with the correction of the planned value of the control plan.
  • FIG. 17 is a diagram showing a processing flow of the control plan correction device 101. The processing of the present embodiment will be described with reference to the workflow of FIG. First, in the data setting step S101, the data setting unit 201 sets the characteristics of the energy supply device 104, the demand data, and the contract information of the consumer facility 102.
  • the priority setting unit 204 sets the priority of each energy supply device 104.
  • the priority may be set by accepting input from the user, or accepting the priority calculated by another device or the like.
  • the received priority is stored in the priority setting database.
  • the data acquisition unit 202 uses the actual values (power consumption and heat consumption) of the energy load device 103 of the power load device and the heat load device measured by using the measuring instrument at the consumer facility 102. ) And the actual value of each energy supply device 104 is acquired.
  • control plan formulation unit 203 is based on the characteristics, demand data, contract information, acquired actual values of the energy load device 103 and the energy supply device 104 of each set energy supply device 104. , Formulate a control plan for each energy supply device 104.
  • the formulation of this control plan may be performed by a known method, and the details of the calculation method will not be described in the present embodiment.
  • the control plan may be formulated by a device outside the device.
  • control plan correction unit 205 sets the acquired actual values of each energy load device 103 and each energy supply device 104, the created control plan of each energy supply device 104, and the set energy supply device.
  • the control plan of each energy supply device 104 is corrected based on the characteristics of 104, the demand data, the contract information of the consumer facility 102, and the priority read from the set priority setting database of each energy supply device 104.
  • the method of correcting the control plan is as described above.
  • control plan notification unit 206 notifies each energy supply device 104 of the corrected control plan calculated in the control plan correction step S105 as a control command value.
  • step S107 the passage of time is confirmed, and when the time of the correction interval in the correction of the control plan has elapsed, the process returns to the control plan correction step S105, and the correction of the control plan is repeated.
  • the correction interval may be any period such as 10 minutes and 1 hour, and the method of determining the correction interval is not limited.
  • the correction of the control plan is performed for each correction interval, but if the actual value at the time of correction and the planned value are compared and there is no difference of the threshold value or more, the correction processing may be controlled so as not to be performed.
  • step S108 it is determined whether or not the control planning period has elapsed.
  • the control plan period is the period during which the control plan is created, and is the period during which the range for repeating the correction of the control plan is determined. For example, it may be one day or one week, and the period is not limited.
  • step S108 If it is determined in step S108 that the control plan period has elapsed, the process of correcting the control plan is terminated.
  • the elapse of the control plan period is defined as the end of the control plan correction process, but the present invention is not limited to this, and the end command is given by accepting the input of the end command from the user in a timely manner. In some cases, it may be controlled to end the correction process of the control plan.
  • FIG. 18 is a hardware configuration diagram showing the configuration of the control plan correction device 101.
  • the control plan correction device 101 includes an input interface 301, a CPU (Central Processing Unit) 302, a storage device 303, and an output interface 304.
  • the interface will be referred to as IF hereafter.
  • the data set and acquired by the data setting unit 201, data acquisition unit 202, priority setting unit 204, etc. of the control contract, priority, actual value, correction value, etc. are stored in the storage device 303, and the control plan formulation unit 203, Functions such as the control plan correction unit 205 are realized by the CPU 302 executing the program.
  • the data setting unit 201, the data acquisition unit 202, and the priority setting unit 204 include an input IF 301.
  • the created and corrected control plan is output from the output IF 304 by the control plan notification unit 206.
  • the storage device 303 is a storage medium such as an HDD, SSD, and flash memory.
  • the control plan correction device has a data acquisition unit that acquires actual values from a plurality of energy supply devices, a priority setting unit that sets priorities for a plurality of energy supply devices, and an energy supply device having a high priority. It is characterized by including a control plan correction unit that corrects a control plan of an energy supply device based on an actual value, and a control plan notification unit that notifies the energy supply device of the corrected control plan.
  • control plan correction unit of the control plan correction device is characterized in that it corrects within a range that does not exceed the total energy supply amount of the energy supply device.
  • the priority setting unit of the control plan correction device is characterized in that the priority is increased in order from the energy supply device having the largest difference between the planned value and the actual value.
  • control plan correction unit of the control plan correction device is characterized in that the control plan of the energy supply device is corrected when the difference between the actual value and the planned value of the control plan is equal to or more than the threshold value.
  • control plan correction unit of the control plan correction device sets one of the planned values of the control plan as the target value, and when it is determined from the acquired actual value that the target value cannot be achieved, the energy supply having a high priority is given. It is characterized in that the control plan is corrected by correcting the planned value so that the target value can be achieved from the actual value with priority given to the device.
  • the control plan correction method is a data acquisition step for acquiring actual values from multiple energy supply devices, a priority setting step for setting priorities for multiple energy supply devices, and priority is given to energy supply devices with high priority. It is characterized by including a control plan correction step for correcting a control plan of an energy supply device based on an actual value, and a control plan notification step for notifying the energy supply device of the corrected control plan.
  • efficient energy supply can be maintained even if there is a deviation (error) between the control plan of the energy supply device 104 and the actual value.
  • Embodiment 2 In the first embodiment, one priority is set for each energy supply device 104. However, it may be preferable to change the priority of each energy supply device 104 according to the electric power demand and heat demand at each time of the consumer facility 102, and in the case of an electric vehicle, depending on the usage schedule of the electric vehicle.
  • the priority of the energy supply device 104 is set for each time. It differs from the first embodiment in that the priority setting unit 204 determines the priority for each time. Since the other parts are the same as those in the first embodiment, the description here will be omitted.
  • FIG. 19 is a block diagram of the control plan correction device 101a of the present embodiment. Instead of the priority setting database 209 of the control plan correction device 101 of FIG. 7, it has a time-specific priority setting database 210.
  • the priority setting unit 204 will be described.
  • the priority setting unit 204 sets the priority of each energy supply device 104 for each time based on the electric power demand, the heat demand, and the usage schedule of the electric vehicle at each time of the consumer facility 102.
  • the priority setting unit 204 reads the priority of each energy supply device 104 for each time from the time-specific priority setting database 210.
  • FIG. 20 is a diagram showing an example of a planned use of an electric vehicle. It is shown that the electric vehicle has a storage battery and is connected to the charging / discharging facility from 8:00 to 19:00 for charging / discharging.
  • the case of being connected is expressed as 1 and the case of not being connected is expressed as 0, but any information that can determine the presence or absence of connection is acceptable and is not limited.
  • the priority of each time can be determined by using the electric vehicle usage schedule, electric power demand data, heat demand data, electric vehicle usage schedule, etc. as shown in FIG.
  • the electricity demand data at each time is FIG. 3
  • the heat demand data is FIG. 4
  • the electricity charge data is FIG.
  • FIG. 21 is a diagram showing an example of the time-based priority setting database 210.
  • FIG. 21 is an example of the time-specific priority setting database 210 when the schedule of the electric vehicle is FIG. 20.
  • the energy supply device 104 since the energy supply device 104 has four types of power receiving point, storage battery, heat storage tank, and electric vehicle, there are four priorities from 1 to 4.
  • the one with a small number has a high priority, but it is not limited to this, and the method of deciding the one with a large number as a high priority is not limited.
  • the priority for each hour is set, but it may be every minute or every two hours, and the period is not limited. It may be controlled so that the user can make a timely decision.
  • the contents of the priority setting database for each time may be arbitrarily determined by the input of the user, or may be controlled so as to be read from an external device.
  • the priority of the storage battery is set high before the time when the power demand is high, and the priority is set low at other times.
  • the priority of the heat storage tank is set high before the time when the heat demand is high, and the priority is set low at other times.
  • the priority is set high when the usage schedule approaches, and the other time is set low.
  • the priority is set high for the time when the power charge is high, and the priority is set for the time when the power charge is low.
  • the time-specific priority may be set arbitrarily by the user, or the time-specific priority is automatically determined based on data such as electric vehicle usage schedule information and power demand data. It may be controlled to do so. In the case of automatic determination, it may be controlled to raise the priority when the schedule of the electric vehicle approaches.
  • the priority may be determined for each time of the energy supply device 104 based on an arbitrary rule such as raising the priority of the storage battery.
  • a part different from that of the first embodiment has been described. It is assumed that the other parts are the same as those in the first embodiment.
  • the method of correcting the control plan is as described in the first embodiment.
  • the control plan correction unit 205 reads the time-specific priority setting database 210 each time the control plan is corrected, and executes the correction process at each correction interval. Each time of correction, the time-specific priority setting database 210 is read, and the priority of the corresponding energy supply device 104 at the time of correction is specified. The control plan of each energy supply device 104 is corrected according to the specified priority.
  • the control plan correction device has a data acquisition unit that acquires actual values from a plurality of energy supply devices, a priority setting unit that sets priorities for a plurality of energy supply devices, and an energy supply device having a high priority. It is characterized by including a control plan correction unit that corrects a control plan of an energy supply device based on an actual value, and a control plan notification unit that notifies the energy supply device of the corrected control plan.
  • the priority setting unit of the control plan correction device sets the priority of the energy supply device for each time, and the control plan correction unit repeatedly corrects each correction interval.
  • the priority setting unit of the control plan correction device is characterized in that the priority is increased in order from the energy supply device having the largest difference between the planned value and the actual value.
  • control plan correction unit of the control plan correction device is characterized in that it corrects within a range that does not exceed the total energy supply amount of the energy supply device.
  • control plan correction unit of the control plan correction device is characterized in that the control plan of the energy supply device is corrected when the difference between the actual value and the planned value of the control plan is equal to or more than the threshold value.
  • control plan correction unit of the control plan correction device sets one of the planned values of the control plan as the target value, and when it is determined from the acquired actual value that the target value cannot be achieved, the energy supply having a high priority is given. It is characterized in that the control plan is corrected by correcting the planned value so that the target value can be achieved from the actual value with priority given to the device.
  • the control plan correction method is a data acquisition step for acquiring actual values from multiple energy supply devices, a priority setting step for setting priorities for multiple energy supply devices, and priority is given to energy supply devices with high priority. It is characterized by including a control plan correction step for correcting a control plan of an energy supply device based on an actual value, and a control plan notification step for notifying the energy supply device of the corrected control plan.
  • the priority of the energy supply device 104 can be set at each time by the control plan correction device 101a as described above, more efficient energy supply and energy use become possible.
  • the invention of the present application is not limited to the embodiments described so far, and can be variously modified within the scope of the invention of the present application. That is, the configuration of the embodiments described so far may be appropriately improved, or at least a part thereof may be replaced with another configuration. Further, the components whose arrangement is not particularly limited are not limited to the arrangement disclosed in the embodiment, and can be arranged at a position where the function can be achieved.
  • the invention may be formed by appropriately combining a plurality of components disclosed in the embodiments described so far. Furthermore, the invention of the present application is shown by the scope of claims, not the scope of the embodiments described above, and includes all modifications within the meaning and scope equivalent to the scope of claims.

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Abstract

La présente invention est caractérisée en ce qu'elle comprend : une unité d'acquisition de données (202) destinée à acquérir des valeurs de performance réelles à partir d'une pluralité d'appareils d'alimentation en énergie ; une unité de définition de priorité (204) destinée à définir des priorités par rapport à la pluralité d'appareils d'alimentation en énergie ; une unité de correction de plan de commande (205) qui, sur la base des valeurs de performance réelles, corrige un plan de commande d'appareil d'alimentation en énergie de préférence à partir d'appareils d'alimentation en énergie ayant des priorités plus élevées ; et une unité de notification de plan de commande (206) qui transmet un plan de commande corrigé aux appareils d'alimentation en énergie.
PCT/JP2019/026466 2019-07-03 2019-07-03 Dispositif de correction de plan de commande et procédé de correction de plan de commande WO2021001963A1 (fr)

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PCT/JP2019/026466 WO2021001963A1 (fr) 2019-07-03 2019-07-03 Dispositif de correction de plan de commande et procédé de correction de plan de commande
JP2019568277A JP6725086B1 (ja) 2019-07-03 2019-07-03 制御計画補正装置及び制御計画補正方法
CN201980098026.5A CN114072833A (zh) 2019-07-03 2019-07-03 控制计划修正装置和控制计划修正方法

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012056581A1 (fr) * 2010-10-29 2012-05-03 株式会社日立製作所 Système de gestion de capacité de production pour dispositifs de fourniture d'énergie
WO2013088611A1 (fr) * 2011-12-14 2013-06-20 パナソニック株式会社 Système de génération d'énergie distribuée et son procédé de commande
JP2015156770A (ja) * 2014-02-21 2015-08-27 富士通株式会社 運転計画支援プログラム、運転計画支援方法および運転計画支援装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012056581A1 (fr) * 2010-10-29 2012-05-03 株式会社日立製作所 Système de gestion de capacité de production pour dispositifs de fourniture d'énergie
WO2013088611A1 (fr) * 2011-12-14 2013-06-20 パナソニック株式会社 Système de génération d'énergie distribuée et son procédé de commande
JP2015156770A (ja) * 2014-02-21 2015-08-27 富士通株式会社 運転計画支援プログラム、運転計画支援方法および運転計画支援装置

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