Power trading system, virtual power plant system, and information processing device.

Abstract

To execute appropriate processing in the case of charging / discharging.SOLUTION: A power transaction system comprises a first meter, a second meter, and a processing unit. The first meter measures a charge amount and a discharge amount of a power storage battery. The second meter measures a charge amount and a discharge amount of a charger / discharger capable of charging and discharging the power storage battery. The processing unit is communicable with the first meter and the second meter and calculates a charging fee of the power storage battery based on the charge amount of the power storage battery measured by the first meter and the discharge amount of the charger / discharger measured by the second meter.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Embodiments of the present invention relate to a power trading system, a virtual power plant system, and an information processing apparatus.

Background Art

[0002] As a next-generation energy, there is a growing trend to charge electric vehicles (EVs) or use discharge from EVs as needed with the electricity generated in each household or the like. In these charging and discharging operations, it is desirable to be charged at an appropriate price. Although it is possible to charge according to the input power amount of the EV charger by installing a metering meter in the EV charger, there is a problem that there may be losses in the charging circuit and the possibility that the power expected by the EV user cannot be received.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, one of the non-limiting problems to be solved by the embodiments is to execute appropriate processing during charging and discharging. The problems to be solved by the embodiments can also be, as some further non-limiting examples, the problems corresponding to the effects described in the following description. That is, the problems corresponding to any at least one of the effects described in the description of the embodiments can be the problems to be solved by the embodiments.

Means for Solving the Problems

[0005] According to one embodiment, the power trading system comprises a first meter, a second meter, and a processing unit. The first meter measures the charge and discharge amounts of a storage battery. The second meter measures the charge and discharge amounts of a charger / discharger capable of charging and discharging the storage battery. The processing unit is able to communicate with the first and second meter and calculates the charge charge for the storage battery based on the charge amount of the storage battery measured by the first meter and the discharge amount of the charger / discharger measured by the second meter. [Brief explanation of the drawing]

[0006] [Figure 1] A diagram illustrating the overall structure of a power trading system according to one embodiment. [Figure 2] A schematic block diagram showing a power trading system according to one embodiment. [Figure 3] A flowchart illustrating the processing of a power trading system according to one embodiment. [Figure 4] A flowchart illustrating the processing of a power trading system according to one embodiment. [Figure 5] A flowchart illustrating the processing of a power trading system according to one embodiment. [Figure 6] A flowchart illustrating the processing of a power trading system according to one embodiment. [Figure 7] A diagram illustrating the schematic of a virtual power plant system according to one embodiment. [Figure 8] A schematic block diagram showing a part of a virtual power plant system according to one embodiment. [Modes for carrying out the invention]

[0007] Embodiments will be described below with reference to the drawings. In this disclosure, the terms "less than" and "greater than or equal to" may be used, but these can be interpreted as "less than or equal to" and "greater than or equal to" as appropriate, and vice versa. The scope of the rights will not be limited by these substitutions.

[0008] (First Embodiment) Figure 1 is a schematic diagram of the overall structure of a power trading system according to one embodiment. The power trading system 1 includes, for example, a charging and discharging facility 10, a public charging and discharging facility 20, and an aggregator 30.

[0009] As an example of what is charged and discharged in this power trading system 1, we will describe the charging and discharging of an electric vehicle (referred to as EV 2). Power trading system 1 has functions for discharging to supply power to EV 2 and for charging to receive power from EV 2.

[0010] EV 2 is just one example of a wide range of charge / discharge applications, and similar transactions can be implemented for other applications as well. For example, the application to be charged or discharged could be a mobile vehicle such as a drone.

[0011] When the target of charging and discharging is EV 2, the power trading system in this disclosure can be used as part of a V2G (Vehicle to Grid) system that treats EV 2 as a mobile battery. Alternatively, the power trading system can also be used as part of a V2H (Vehicle to Home) system via EV 2. That is, EV 2 can be made mobile by being charged from a battery in the system, and can also function as a battery that supplies power to the battery in the system as needed.

[0012] The charging and discharging equipment 10 is a charging and discharging facility on the customer side, for example, a charging and discharging facility installed in a house or building. The charging and discharging equipment 10 performs the process of discharging to EV 2 in response to a request from EV 2, and the process of receiving power supply from EV 2 and charging based on a request to EV 2.

[0013] The public charging and discharging equipment 20 is charging and discharging equipment provided publicly. Representative examples of the public charging and discharging equipment 20 include, but are not limited to, charging stands. The public charging and discharging equipment 20 is equipment managed by an enterprise or aggregator 30, such as a service area, a parking lot management company, or a shopping mall operator, that manages and operates a charger system, and is equipment that charges the EV 2 with power supplied from an electric power company or supplies power from the EV 2 to the electric power company.

[0014] The rechargeable batteries of the charging and discharging equipment 10 and the public charging and discharging equipment 20 can exchange power with the EV 2 via a cable or the like, or via a wireless method without using a cable or the like.

[0015] The aggregator 30 connects consumers and the electric power company and adjusts the power supply and demand balance. As a representative example, the aggregator 30 is a specific wholesaler in Japan. The charging and discharging equipment 10 and the public charging and discharging equipment 20 may be connected via this aggregator 30, and control of power between these equipment may be realized as necessary.

[0016] The aggregator 30 is connected to the power grid (for example, the grid power of the electric power company), and charging and discharging control is executed by the aggregator 30.

[0017] In FIG. 1, the power trading system 1 includes one charging and discharging equipment 10, one public charging and discharging equipment 20, and one aggregator 30, but is not limited thereto. The power trading system 1 can include one or more charging and discharging equipment 10, one or more public charging and discharging equipment 20, and one or more aggregators 30. Also, although two types of charging and discharging equipment, the charging and discharging equipment 10 and the public charging and discharging equipment 20, are shown, it is not limited thereto, and a form in which only one of them is provided may also be possible.

[0018] In the power trading system 1, charges are generated according to charging and discharging. In the present disclosure, the calculation method of this charge will be described using embodiments.

[0019] FIG. 2 is a block diagram showing the power trading system 1 in more detail than FIG. 1. The details of the charging / discharging equipment 10 and the public charging / discharging equipment 20 are shown in more detail.

[0020] The charging / discharging equipment 10 includes a smart meter 100, an energy management system (hereinafter referred to as Energy Management System: EMS 102), an EV charger 104, and a charger 106.

[0021] The smart meter 100 includes a communication unit that communicates with the aggregator 30 and a processing unit having various computing functions. The smart meter 100 measures the electricity consumption every predetermined time and outputs the measured value to the aggregator 30 via the communication unit. In addition, the smart meter 100 may have a function as a breaker that cuts off electricity when the electricity consumption becomes an abnormal value. The smart meter 100 can communicate with a specific meter via wired or wireless as shown by the dotted line.

[0022] The EMS 102 grasps and manages the energy usage status of individual houses, buildings, factories, etc. using communication via the smart meter 100. The EMS 102 may be, for example, HEMS (Home EMS), BEMS (Building EMS), or FEMS (Factory EMS). The EMS 102 can, for example, grasp the energy usage status of a building or the like, control the power in the equipment, and optimize the energy consumption.

[0023] The EV charger / discharger 104 supplies power to (discharges) the battery of EV 2 and supplies power from the battery of EV 2 (charges). EV 2 is equipped with an EV battery 50 and can exchange power with the EV charger / discharger 104. The EV battery 50 is equipped with a special meter 60 (first meter) which measures the amount of charge and discharge in the EV battery 50.

[0024] Similarly, the EV charger / discharger 104 on the charge / discharge equipment 10 side is equipped with a special measuring device 62 (second measuring device) to measure the amount of charge and discharge in the EV charger / discharger 104.

[0025] The special meter 60 measures the amount of charge and discharge when the EV battery 50 is being charged or discharged, and transmits the charge and discharge amount to the processing unit of the smart meter 100. If necessary, the special meter 60 may store the charge and discharge amount to be transmitted to the smart meter 100.

[0026] The special measuring device 62 measures the amount of charge and discharge when the EV charge / discharger 104 is charging or discharging, and transmits the charge / discharge amount to the processing unit of the smart meter 100. If necessary, the special measuring device 62 may store the charge / discharge amount to be transmitted to the smart meter 100.

[0027] The processing unit can communicate with both the special measuring instruments 60 and 62 and receives the charge and discharge amounts measured by each measuring instrument.

[0028] When the EV battery 50 is charged by the EV charger / discharger 104, the processing unit calculates the charging fee based on the amount of charge measured by the special meter 60 and the amount of discharge measured by the special meter 62. The user of EV 2 is charged based on this charging fee.

[0029] When the EV battery 50 supplies power to the EV charger / discharger 104 and discharges, the processing unit calculates the discharge charge based on the discharge amount measured by the special meter 60 and the charge amount measured by the special meter 62. The user of EV 2 is charged (a negative charge) based on this discharge charge.

[0030] The processing unit calculates the charge and discharge charges for the EV battery 50 by substituting the charge and discharge amounts into a predetermined formula. The predetermined formula may differ depending on the power company, etc. Furthermore, the predetermined formula may be a metered rate formula, a formula with parameters that fluctuate according to dynamic pricing based on demand, or a formula that combines these.

[0031] If there is a difference (error) of more than a predetermined value between the value measured by the first meter (special meter 60) measured in EV 2 and the value measured by the second meter (special meter 62) measured in the charging / discharging equipment 10, the processing unit may cancel this difference or adjust this difference using a predetermined method. As an example, the processing unit may charge based on the measurement value of the special meter 60 when charging the EV battery 50, and based on the measurement value of the special meter 62 when discharging from the EV battery 50.

[0032] As an example, the processing unit may calculate the average of the two measured values ​​and substitute it into the predetermined formula, substitute the higher or lower of the two measured values ​​into the predetermined formula, or calculate the weighted sum of the two measured values ​​and substitute it into the predetermined formula.

[0033] The charger / discharger 106 performs charging and discharging for other purposes within the charge / discharge equipment 10. A special measuring device 64 may also be installed in this charger / discharger 106.

[0034] The public charging facility 20 includes a smart meter 200 and an EV charger / discharger 202. The operation of the smart meter 200 is almost the same as that of the smart meter 100. The operation of the EV charger / discharger 202 is almost the same as that of the EV charger / discharger 104. That is, the charge / discharge fee is calculated by measuring the amount of charge and discharge to EV 2 using both the special meter 60 installed in EV 2 and the special meter 66 installed in the public charging facility 20.

[0035] Figure 3 is a flowchart illustrating the process for calculating charge and discharge charges in a power trading system according to one embodiment. This flowchart shows the process when charging is performed from the charge and discharge equipment 10 to the EV battery 50.

[0036] Charging and discharging are initiated between the EV battery 50 of EV 2 and the EV charger / discharger 104 (or EV charger / discharger 202, the same applies hereinafter) (S100). This charging and discharging is performed, for example, when a user of EV 2 and / or the charging and discharging equipment 10 places the vehicle at a designated charging location and requests the user to do so. The user can start and stop charging and discharging by following a predetermined procedure, for example. When the EV battery 50 is fully charged, charging and discharging may be stopped automatically.

[0037] The charge and discharge amounts of both the EV battery 50 and the EV charge / discharger 104 are measured using the measuring instruments attached to each (S102). Although this is shown as a sequential process in the flowchart, it is not limited to this, and the measuring instrument may perform the measurement in parallel with the charging of the EV battery 50. The measuring instrument transmits the measured value to the processing unit of the smart meter.

[0038] The processing unit that receives the measured values ​​calculates the charging cost for the EV battery 50 based on each measured value (S104).

[0039] Figure 4 is a flowchart illustrating the process for calculating charge and discharge charges in a power trading system according to one embodiment. This flowchart shows the process when discharging from the EV battery 50 to the charge and discharge equipment 10.

[0040] Charging and discharging are initiated between the EV battery 50 of EV 2 and the EV charger / discharger 104 (or EV charger / discharger 202, the same applies hereinafter) (S200). This charging and discharging is performed, for example, when a user of EV 2 and / or the charging and discharging equipment 10 places the vehicle at a predetermined discharge location and the charging and discharging is performed at the user's request. The user can start and stop charging and discharging by following predetermined procedures, for example. Charging and discharging may be automatically stopped when the amount of charge in the EV battery 50 falls below a predetermined amount.

[0041] The charge and discharge amounts of both the EV battery 50 and the EV charge / discharger 104 are measured using the measuring instruments attached to each (S102). Although this is shown as a sequential process in the flowchart, it is not limited to this, and the measuring instrument may perform the measurement in parallel with the discharge from the EV battery 50. The measuring instrument transmits the measured value to the processing unit of the smart meter.

[0042] The processing unit that receives the measured values ​​calculates the discharge charge for the EV battery 50 based on each measured value (S204).

[0043] As described above, according to this embodiment, the charge and discharge charges are calculated by acquiring the charge and discharge amounts on both the charging and discharging sides. This method of calculating charge and discharge charges, which reads the meter values ​​on both the charging and discharging sides, makes it possible to suppress fraud by businesses and by providers of HEMS and BEMS.

[0044] (Second Embodiment) In the first embodiment described above, the charge and discharge amounts are measured in both the battery and the charger / discharger, but there is a possibility that there may be a significant difference between the two measured values. In this embodiment, we will describe a power trading system that performs subsequent processing by comparing the two measured values.

[0045] The processing unit of the smart meter 100 can calculate the difference between the measured values ​​of the special measuring instrument 60 and the special measuring instrument 62, and perform appropriate processing based on this difference.

[0046] Figure 5 is a flowchart illustrating the processing of a power trading system according to one embodiment. S300 corresponds to the processing of S100 in Figure 3 or S200 in Figure 4, and S302 corresponds to the processing of S102 in Figure 3 or S202 in Figure 4, so a detailed explanation is omitted.

[0047] The processing unit compares the charge and discharge amounts measured by the special measuring instruments 60 and 62, respectively (S304). In the case of charging the EV battery 50, the processing unit compares the charge amount measured by the special measuring instrument 60 with the discharge amount measured by the special measuring instrument 62. In the case of discharge from the EV battery 50, the processing unit compares the discharge amount measured by the special measuring instrument 60 with the charge amount measured by the special measuring instrument 62.

[0048] The processing unit performs processing based on the comparison results (S306). For example, if the difference between the measured values ​​of the two meters is less than a predetermined value, the processing unit can calculate a charge / discharge charge based on the measured value of either meter (for example, it may be the special meter 60 for charging, or the special meter 62 for discharging, but is not limited to these) and bill the user or the aggregator 30 for this charge. Note that "billing" may include automatic deduction or automatic charging. For example, electricity charges can be billed by the power company to the aggregator 30 based on the measured value of the smart meter.

[0049] Furthermore, if the difference in measured values ​​exceeds a predetermined value, the processing unit may notify the user, administrator, etc., of a possible malfunction. By receiving this alarm, the user, administrator, etc., can become aware that there may be a malfunction. The calculation of charges can also be determined based on the measurement results of the measuring instrument that is outputting appropriate measured values ​​after the malfunction has been detected.

[0050] As described above, according to this embodiment, when the difference between the two measured values ​​is small, the fee can be set. This process makes it possible to set a charge / discharge fee that is more accurately based on the charge / discharge amount.

[0051] (Third embodiment) The EMS 102 may have a control unit for controlling power supply and demand. In this case, the processing unit can also control charging and discharging based on the measured values ​​of the special meters 60 and 62.

[0052] Figure 6 is a flowchart illustrating the processing of a power trading system according to one embodiment. The processing in S400 and S402 corresponds to the processing in S300 and S302 in Figure 5, respectively.

[0053] The processing unit compares the charge and discharge amounts measured by the respective measuring instruments received from the special measuring instrument 60 and the special measuring instrument 62 (S404). Unlike the embodiment described above, the processing unit can perform this comparison of measured values, for example, at the start of charging and discharging, or at a timing during charging and discharging.

[0054] The control unit performs charge / discharge control based on the difference in measured values ​​calculated by the processing unit (S406). In this way, the control unit can perform charge / discharge control based on the power measurement value (measured value) of the special meter 60 and the power measurement value (measured value) of the special meter 62.

[0055] As a specific example, the control unit can perform low-power charging and discharging at the start of charging and discharging, and can perform a predetermined charging and discharging process based on the difference in measured values ​​calculated by the processing unit. For example, if the difference in measured values ​​is smaller than a set value, the control unit determines that a normal charging and discharging operation is being performed, or that the amount of power measured during a normal charging and discharging operation is being performed, and after that determination, it performs charging and discharging up to the desired amount of charging and discharging power.

[0056] As a specific example, the control unit may, during charging and discharging, determine that a normal charging and discharging operation is not being performed, or that the power value measurement during a normal charging and discharging operation is not being performed, if the difference between the measured values ​​calculated by the processing unit is greater than a set value, and may stop the charging and discharging control. Furthermore, the control unit may issue an alarm based on this determination result.

[0057] Furthermore, as described above, the EMS 102 may perform charge and discharge control based on the calculation results of the smart meter 100, or the processing unit may request the control unit to perform what kind of charge and discharge control, that is, the smart meter 100 may make a control request to the EMS 102.

[0058] As described above, according to this embodiment, by providing meters on both the storage battery and the charger / discharger, it becomes possible to obtain information on whether normal charging and discharging is being performed or whether charging and discharging is not being performed, and then perform charge / discharge control in the EMS 102.

[0059] In each of the embodiments described above, the special measuring device 60 and / or the special measuring device 62 can notify the processing unit of the charge / discharge amount since the previous notification time at a predetermined timing or period. In addition, the special measuring device 60 and / or the special measuring device 62 can notify the processing unit of the charge / discharge amount since the previous notification time upon request from the processing unit.

[0060] In each of the embodiments described above, the special meter 60 and / or special meter 62 can issue a claim at a predetermined timing or period corresponding to the amount of charge / discharge since the previous notification time. Furthermore, the special meter 60 and / or special meter 62 can issue a claim corresponding to the amount of charge / discharge since the previous notification time upon request from the processing unit. The claim can be made, for example, to the user or the power company.

[0061] In each of the embodiments described above, the special measuring device 60 and / or special measuring device 62 can transmit the user identifier associated with the EV battery 50, along with the charge / discharge amount, to the processing unit at any of the above timings. As a result, the EV 2 performing the charge / discharge can be recognized, and appropriate charging / discharging and billing processes can be implemented. In this case, the special measuring device 62 can also obtain the user identifier information transmitted from the special measuring device 60, and conversely, the special measuring device 60 can obtain the user identifier information transmitted from the special measuring device 62. By transmitting the user identifier information to other measuring devices, the measuring devices can perform processing that uniquely associates the user.

[0062] The special measuring device 60 and / or special measuring device 62 can, for example, transmit a user identifier to the processing unit. The processing unit can also perform processing such as billing on appropriately linked data based on the received user identifier. The processing unit can also share this user identifier with other measuring devices or smart meters.

[0063] In each of the above embodiments, the special measuring device 62 may notify the processing unit of the charge / discharge amount at the time when charging or discharging by one user is completed. Alternatively, the special measuring device 62 may notify the processing unit of the charge / discharge amount at the time when one charge / discharge cycle is completed.

[0064] As described above, the electricity trading system 1 according to each embodiment makes it possible to perform appropriate charge and discharge control and calculate appropriate charges for such charge and discharge. As a result, it is possible to suppress wasted power consumption due to malfunctions during charge and discharge, as well as fraud by malicious actors.

[0065] (Fourth Embodiment) The aforementioned power trading system can also be incorporated into a virtual power plant system. In other words, charging and discharging from a battery can also be considered part of the virtual power plant system. Figure 7 is a schematic diagram of an example of a virtual power plant system according to one embodiment. The virtual power plant system 3 comprises a power trading system 1 and a power generation device 70 connected to the charging and discharging equipment 10 of the power trading system 1.

[0066] The power generation device 70 is, for example, a photovoltaic (PV) power generation device, a renewable energy power generation device, or the like. The power generation device 70 may be a power generation device installed in conjunction with an individual home or building. Similar to the embodiments described above, one or more power generation devices 70 may be arranged within the virtual power plant system 3.

[0067] The power generation device 70 can supply the electricity it generates to other devices such as EVs via the charging and discharging equipment 10. For example, the power generation device 70 can supply power to other devices by charging the battery in the charging and discharging equipment 10 with the electricity it generates.

[0068] A special meter 72 (third meter) is installed in the power generation device 70. The amount of electricity that the power generation device 70 charges and discharges, mainly discharging, is measured by the special meter 72. The special meter 72 may be able to communicate with the smart meter 100 of the charging and discharging equipment 10.

[0069] Figure 8 is a schematic block diagram showing a part of a virtual power plant system 3 according to one embodiment, particularly the part relating to the charging and discharging equipment 10. In the virtual power plant system 3, the charging and discharging equipment 10 includes a smart meter 100, an EMS 102, a storage battery 108, and a charger / discharger 110. In addition, it may include components similar to those of the embodiments described above.

[0070] The storage battery 108 is a battery that stores the electricity generated by the power generation device 70. The charge and discharge amounts of the storage battery 108 are measured by the special measuring device 74.

[0071] The charger / discharger 110 is a device that supplies power stored in the battery 108 to any device, or supplies power from any device to the battery 108. The charge and discharge amounts of the charger / discharger 110 are measured by the special measuring instrument 76.

[0072] In this manner, for EMS 102, which functions as one node in a typical virtual power plant system, special measuring devices can be provided for the battery and charger / discharger, similar to the embodiments described above.

[0073] The special measuring devices 72, 74, and 76 can communicate with the smart meter 100, as shown by the dotted lines. Based on the power measurement values ​​received from the special measuring devices 72, 74, and 76, the processing unit of the smart meter 100 can perform charge / discharge control and calculate charge / discharge charges, similar to the embodiments described above.

[0074] As described above, the processing unit of the smart meter 100 can monitor the operation of the virtual power plant system 3 based on the output from each special meter. For example, as in the embodiment described above, malfunctions, irregularities, etc., can be detected by measuring and comparing the charge and discharge amounts between the power generation device 70 and the storage battery 108 on each device side. The same applies to the storage battery 108 and the charge / discharge unit 110. In addition to charging from the power generation device 70, malfunctions, irregularities, etc., regarding the supply of power from the storage battery 108 to other devices via the charge / discharge unit 110 can also be detected by comparing the outputs from the three special meters.

[0075] Although Figure 8 shows an example where one power generation device 70 is connected to one charge / discharge equipment 10, the system is not limited to this. For example, multiple power generation devices 70 may be connected to one charge / discharge equipment 10, or one power generation device 70 may be shared and connected to multiple charge / discharge equipment 10s. In this way, one or more power generation devices 70 can be connected to one or more charge / discharge equipment 10s, and multiple charge / discharge equipment 10s can be connected in a grid to form a virtual power plant system 3.

[0076] In the embodiments described above, the processing unit within the smart meter 100 performed various processes based on the output from each special measuring instrument. The embodiments described herein are not limited thereto, and the processing may be performed by a processing unit of an information processing device independent of the smart meter 100, the smart meter 100 may be provided as part of an information processing device, or the smart meter 100 itself may be considered as an information processing device.

[0077] The processing unit of the information processing device may have a dedicated processing circuit, or it may be a general-purpose processing circuit in which software-based information processing is concretely realized using hardware resources. In this case, the processing circuit can concretely realize software-based information processing by referring to a program or executable file etc. stored in a storage unit (not shown).

[0078] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of Symbols]

[0079] 1: Electricity trading system, 10: Charging and discharging equipment, 100: Smart meter, 102: EMS, 104: EV charger / discharger, 106: Charger / discharger, 108: Storage battery, 110: Charger / discharger, 20: Public charging and discharging facilities, 200: Smart meter, 202: EV charger / discharger, 30: Aggregator, 2: EV, 50: EV capacitor, 60, 62, 64, 66: Special measuring instrument, 3: Virtual power plant system, 70: Power generation equipment, 72, 74, 76: Special measuring instrument

Claims

1. A first measuring device for measuring the charge and discharge amounts of the storage battery, A second measuring device for measuring the charge and discharge amounts of a charger / discharger capable of charging and discharging the aforementioned storage battery, A processing unit capable of communicating with the first measuring instrument and the second measuring instrument, A control unit performs charge and discharge control based on the measured value of the first measuring instrument and the measured value of the second measuring instrument. Equipped with, The processing unit calculates the charging cost of the battery based on the amount of charge of the battery measured by the first meter and the amount of discharge of the charger / discharger measured by the second meter. The control unit, At the start of charging and discharging, control is implemented to charge and discharge at low power. If the difference between the power measurement value of the first meter and the power measurement value of the second meter is smaller than a set value, the system determines that the charge / discharge operation is normal and then performs a charge / discharge of the desired amount of power. Electricity trading system.

2. A first measuring device for measuring the charge and discharge amounts of the storage battery, A second measuring device for measuring the charge and discharge amounts of a charger / discharger capable of charging and discharging the aforementioned storage battery, A processing unit capable of communicating with the first measuring instrument and the second measuring instrument, Equipped with, The processing unit calculates the charging cost of the battery based on the amount of charge of the battery measured by the first meter and the amount of discharge of the charger / discharger measured by the second meter. The first and second measuring devices notify the processing unit of the charge / discharge amounts since the previous notification time at predetermined timings or at predetermined intervals. Electricity trading system.

3. A first measuring device for measuring the charge and discharge amounts of the storage battery, A second measuring device for measuring the charge and discharge amounts of a charger / discharger capable of charging and discharging the aforementioned storage battery, A processing unit capable of communicating with the first measuring instrument and the second measuring instrument, Equipped with, The processing unit calculates the charging cost of the battery based on the amount of charge of the battery measured by the first meter and the amount of discharge of the charger / discharger measured by the second meter. The first and second meters, upon request from the processing unit, notify the processing unit of the amount of charge and discharge since the most recent notification time. Electricity trading system.

4. A first measuring device for measuring the charge and discharge amounts of the storage battery, A second measuring device for measuring the charge and discharge amounts of a charger / discharger capable of charging and discharging the aforementioned storage battery, A processing unit capable of communicating with the first measuring instrument and the second measuring instrument, Equipped with, The processing unit calculates the charging cost of the battery based on the amount of charge of the battery measured by the first meter and the amount of discharge of the charger / discharger measured by the second meter. The first and second meters notify the processing unit of the user identifier along with the charge / discharge amount. Electricity trading system.

5. A first measuring device for measuring the charge and discharge amounts of the storage battery, A second measuring device for measuring the charge and discharge amounts of a charger / discharger capable of charging and discharging the aforementioned storage battery, A processing unit capable of communicating with the first measuring instrument and the second measuring instrument, Equipped with, The processing unit calculates the charging cost of the battery based on the amount of charge of the battery measured by the first meter and the amount of discharge of the charger / discharger measured by the second meter. The second measuring device obtains a battery user identifier through communication with the first measuring device. Electricity trading system.

6. The processing unit further determines the discharge charge for the battery based on the amount of discharge of the battery measured by the first meter and the amount of power supplied to the charger / discharger measured by the second meter. The electricity trading system according to any one of claims 1 to 5.

7. The processing unit, when the difference between the charge / discharge amount of the battery measured by the first meter and the charge / discharge amount of the charge / discharge device measured by the second meter is less than a predetermined value, charges the battery user or the charge / discharge aggregator for the charge / discharge charge corresponding to the charge / discharge amount of the battery measured by the first meter. The power trading system according to any one of claims 1 to 5.

8. A control unit performs charge and discharge control based on the measured value of the first measuring instrument and the measured value of the second measuring instrument. The electricity trading system according to any one of claims 2 to 5, further comprising:

9. The control unit, At the start of charging and discharging, control is implemented to charge and discharge at low power. If the difference between the power measurement value of the first meter and the power measurement value of the second meter is smaller than a set value, the system determines that the charge / discharge operation is normal and then performs a charge / discharge of the desired amount of power. The electricity trading system according to claim 8.

10. The control unit, During the timing of charge / discharge control, if the difference between the power measurement value of the first meter and the power measurement value of the second meter is greater than a specified value, the charge / discharge control is stopped. The power trading system according to claim 8.

11. The first and second measuring devices notify the processing unit of the charge / discharge amounts since the previous notification time at predetermined timings or at predetermined intervals. A power trading system according to claim 1, or any one of claims 3 to 5.

12. The first and second meters, upon request from the processing unit, notify the processing unit of the amount of charge and discharge since the most recent notification time. A power trading system according to any one of claims 1, 2, 4, or 5.

13. The first and second meters notify the processing unit of the user identifier along with the charge / discharge amount. A power trading system according to any one of claims 1 to 3, or claim 5.

14. The second measuring device obtains a battery user identifier through communication with the first measuring device. The electricity trading system according to any one of claims 1 to 4.

15. The second meter notifies the processing unit of the charge / discharge amount at the time when charging or discharging by one user is completed. The power trading system according to any one of claims 1 to 5.

16. A processing unit calculates the charging fee for the storage battery based on the charge amount of the storage battery measured by a first meter that measures the charge amount and discharge amount of the storage battery, the discharge amount of the charger / discharger capable of charging and discharging the storage battery, and the discharge amount of the charger / discharger measured by a second meter that measures the discharge amount. A control unit that performs charge and discharge control based on the measured value of the first meter and the measured value of the second meter, wherein at the timing of the start of charge and discharge, it controls to charge and discharge at low power, and after determining that the charge and discharge operation is normal when the difference between the power measured value of the first meter and the power measured value of the second meter is smaller than a set value, it performs charge and discharge of a desired amount of charge and discharge power. An information processing device equipped with the following features.

Images