Electricity trading system and program

Abstract

To provide an electric power transaction system capable of performing electric power transaction adaptively to a simultaneous same-amount institution for electric power supply and also flexibly according to demand-supply balance.SOLUTION: ELectric power demand and supply are linked to virtual coins of a block chain etc., and the expiration date of use of the virtual coins is made to correspond to a limited time of same-time, same-amount use. Virtual coins generated according to an electric power generation amount can be validated / invalidated based upon demand-supply balance, and the virtual coins are invalidated after a limited time of 30 minutes passes.Consequently, a consumer who purchases virtual coins needs to use the virtual coins, namely, complete electric power transaction within the limited time, so electric power can be securely used in a same-time, same-amount manner. Additional information on the kind, electric power generation place, etc., of renewable energy is further linked to virtual coins, so the value of the virtual coins is dynamically varied based thereupon, so that consumers can perform transaction selectively with desired virtual coins.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a power trading system and a power trading program, and more particularly to a technology for realizing power trading that can respond immediately to the simultaneous equal quantity rule for maintaining the power supply-demand balance.

Background Art

[0002] The emissions of greenhouse gases have been increasing year by year, and in 2013, the highest emissions in history were recorded. Under the Paris Agreement that came into force in 2016, it has been agreed to peak out the world's greenhouse gas emissions as soon as possible, and in the latter half of the 21st century, to balance the greenhouse gas emissions and the absorption by forests and the like. As it has become urgent to reduce the emissions of greenhouse gases, active utilization methods of renewable energy that do not emit greenhouse gases have been proposed.

[0003] One of the measures to promote the reduction of greenhouse gas emissions is the emissions trading system. There are already some regions in Japan that have introduced it, and in particular, cap and trade, which is also called the domestic emissions trading system. This is a system in which an emission limit (cap) is set for enterprises, and the emission limits (surplus emissions or deficit emissions) are traded among enterprises. Instead of simply regulating emissions, it is a mechanism to reduce emissions by selling and buying surplus emission limits.

[0004] Enterprises that cannot independently work on emission reduction or cannot keep within the determined emission limits even if they try are allowed to purchase emission limits through other operators or auctions and fulfill their emission reduction obligations. There are also trading methods in which the excess (remaining capacity) over the obligation during the period when emission reduction has been achieved is carried over to the next period to cover the shortage of the reduction obligation, or when the actual emissions are below the standard, the reduction amount is certified as a credit. The emissions trading system makes it easier to fulfill obligations through various flexible means.

[0005] On the other hand, when renewable energy is used as the main power source, if the balance between electricity supply and demand is not maintained, the frequency (quality) of electricity will be disrupted, making it impossible to provide a stable supply of electricity. In other words, there is a need for "simultaneous and equal supply and demand," where the amount of electricity supplied and consumed are the same at the same time. Therefore, with the full liberalization of electricity retail, the planned value simultaneous and equal supply and demand system was introduced in April 2016. The planned value simultaneous and equal supply and demand system is a system in which the power generation contractor (for example, a power generation company) that is the contracting party for the power generation adjustment supply contract matches the power generation plan formulated in advance with the power generation contractor's actual power generation results in units of management time (for example, 30 minutes), and also matches the demand plan (electricity demand plan) formulated in advance with the demand contractor (for example, a retail electricity company) that is the contracting party for the transmission supply contract with the demand contractor's actual demand results in units of 30 minutes. Examples of systems that manage the supply and demand of electricity based on "simultaneous and equal supply and demand" are disclosed in the following Patent Documents 1 and 2. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Patent No. 6803596 [Patent Document 2] Japanese Patent Publication No. 6963239 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] Electricity cannot be stored in large quantities, and the electricity being used at any given moment must be electricity generated somewhere at that very moment. In essence, "simultaneous and equal supply" is an indispensable constraint for ensuring a stable supply of electricity. Therefore, emissions trading that far exceeds the short grace period of about 30 minutes and uses surplus capacity carried over from the previous period to cover emission reductions that cannot be fulfilled as required deviates from the principle of "simultaneous and equal supply," and merely conveniently adjusts the reduction targets.

[0008] Therefore, the present invention aims to provide a power trading system, a power trading method, and a power trading program that can respond to the simultaneous supply and demand system in power supply and flexibly conduct power trading in accordance with the supply and demand balance. [Means for solving the problem]

[0009] To achieve the above objective, the electricity trading system for supplying electricity generated by renewable energy according to the present invention is characterized by comprising: means for generating virtual coins corresponding to the amount of electricity generated; means for assigning a timestamp to identify the time at which the virtual coins were generated; a blockchain generation unit for associating the time with the virtual coins to create a blockchain; and coin control means for controlling the virtual coins, the coin control means comprising: (1) transmitting a signal to the power controller of a consumer that has purchased the virtual coins to supply an amount of electricity corresponding to the virtual coins to the consumer; (2) virtually extinguishing the purchased virtual coins according to the consumer's electricity usage; and (3) determining whether or not it is within a predetermined time period starting from the time, and invalidating the virtual coins so that they cannot be used after the predetermined time has elapsed.

[0010] Furthermore, the blockchain generation unit of the power trading system according to the present invention is characterized in that it further links the type of renewable energy, the location of the renewable energy generation, the distance between the location of the renewable energy generation and the location of the consumer who plans to purchase the virtual coin, and the generation cost and supply cost of the renewable energy as additional information to the virtual coin and then creates a blockchain.

[0011] Furthermore, in the case of the power trading system according to the present invention, the value of the virtual coin fluctuates based on at least one of the time and the additional information, the value of the virtual coin, the time, and the additional information are provided to any consumer who has purchased or plans to purchase the virtual coin, and the system accepts requests from such consumers to purchase or sell the virtual coin. In addition, when power is stored in the charger, the coin control means does not invalidate the virtual coin even after the predetermined time has elapsed, allowing the use of power from the charger, and cancels the virtual coin according to the amount of power used. If a request to sell the virtual coin is accepted, the system returns the virtual coin to be sold and pays consideration corresponding to the market price of the virtual coin. [Effects of the Invention]

[0012] The payment system according to the present invention is based on a smart contract that automatically executes predetermined processes to maintain the simultaneous and equal supply conditions imposed for stable power supply, triggered by the real-time data collection of renewable energy generation onto the blockchain. A specific example of the smart contract links power supply and demand to virtual coins used on the blockchain, and links the expiration date of the virtual coins to the time limit for simultaneous and equal supply. That is, it is possible to activate / deactivate virtual coins generated according to the amount of power generated based on the supply and demand balance, and after the 30-minute time limit has elapsed, the generated virtual coins become invalid regardless of whether they have actually been used or not. Therefore, consumers who purchase virtual coins are required to use the virtual coins, i.e., conduct power transactions, within the time limit, thus ensuring that simultaneous and equal power usage is carried out.

[0013] In addition, since additional information such as the type of renewable energy, the location of the renewable energy power generation site, the distance between the renewable energy power generation site and the location of the consumer who plans to purchase virtual coins, the power generation cost and supply cost of renewable energy, etc. is further linked to the virtual coins, based on this information, the price of the virtual coins is dynamically varied to enable the consumer to selectively conduct desired virtual coin transactions.

Brief Description of the Drawings

[0014] [Figure 1] It is an overall conceptual diagram showing the power trading system of the present invention, renewable energy including the power grid on the power supply side, and consumer equipment on the power consumption side. [Figure 2] It is a conceptual diagram for explaining that green coins are traded between the power trading system and consumer equipment. [Figure 3] It is a conceptual diagram showing the configuration of the gateway between the renewable energy power generation facility and the power trading system. [Figure 4] It is a diagram for explaining the configuration of the power trading system. [Figure 5] It is a diagram for explaining the time stamp added to the coin. [Figure 6] It is a diagram for explaining that the coin price automatically fluctuates according to the energy supply and demand. [Figure 7] It is a diagram showing an example of the blocked green coin. [Figure 8] It is a diagram for explaining that the coin price changes according to the positional relationship between the consumer and the power generation facility. [Figure 9] It is a diagram showing an example of the battery configuration. [Figure 10] It is a diagram showing an example of the usage method of the battery. [Figure 11] It is a diagram showing a form of coin reuse.

Embodiments for Carrying Out the Invention

[0015] Hereinafter, with reference to the drawings, an embodiment of the power trading system according to the present invention will be described. FIG. 1 is a diagram showing the overall concept of linking the supply side and the consumption side of renewable energy via the power trading system 100 in this embodiment. The renewable energy targeted by the power trading system 100 includes solar power generation, wind power generation, geothermal power generation, biomass power generation, and hydroelectric power generation, etc. In this embodiment, it is assumed that the supply facility of renewable energy is the solar power plant 10, and the mechanism of power supply and demand will be described taking this solar power generation as an example. Other renewable energies also conduct power generation power trading with consumers who consume via the power trading system 100 in the same way. Note that the power grid constructed by the transmission and distribution network has mainly been formed in a form connecting large-scale power sources and demand areas, and power generation by renewable energy such as sunlight can be made available by connecting to this power grid. Hereinafter, the description will be based on the premise that solar power is connected to the power grid.

[0016] As shown in FIG. 1, the power generated by the solar power generation facility 10 is supplied by the transmission and distribution network (power grid) 20 to the home 30, the office / factory 40, and the electric vehicle (for example, electric vehicle, hybrid vehicle, fuel cell vehicle, etc.) 50. It is not simply that the power generated by the solar power generation facility 10 is supplied to the home 30 and the electric vehicle 50 by the transmission and distribution network 20, but the power trading system 100 intervenes to dynamically control the supply of the power generated from sunlight. Actually, power derived from power generation facilities using oil, nuclear power, etc. is also transmitted via the same transmission and distribution network 20, but since the supply of renewable energy to consumers is data-managed by the power trading system 100, the usage record of renewable energy including the usage time and the usage amount will be guaranteed.

[0017] The power trading system 100 of this embodiment includes, as shown in Figure 1, a coin generation unit 1 and a coin control unit 2, as well as a timestamp assignment unit 3 and a blockchain generation unit 4, which will be described later in relation to Figure 4. The coin generation unit 1 has the function of generating virtual coins proportional to the amount of electricity generated when it receives a measurement value, since the amount of electricity generated by the solar power generation equipment 10 is constantly measured by an ammeter. Since these virtual coins are based on the amount of renewable energy, they will be referred to as "green coins" below. In this embodiment, the power trading system 100 generates the green coins, but this is not necessarily the only way to do so. As shown in Figure 3, the coin generation unit 1 of the power trading system 100 may be executed at the gateway 22. When green coins are generated at the gateway 22, the power trading system 100 receives the green coins from the gateway 22 and conducts green coin transactions with the demand side via the network 6.

[0018] The number of coins generated is proportional to the amount of electricity generated by the solar power generation equipment 10. Therefore, the coin generation unit 1 issues a number of green coins equivalent to the amount of electricity required by the consumer by allocating one green coin to each unit of electricity generated (for example, 1 Wh or 10 Wh), or by allocating the total amount of electricity required by the consumer to one green coin. While Figure 1 shows the supply of electricity itself, Figure 2 shows it from the perspective of the exchange of green coins. As shown in Figure 2, the green coins from the power trading system 100 are delivered to the consumer via the communication network 6. As explained in Figure 1, the power trading system 100 receives power generation information from the solar power generation equipment 10, so as shown in Figure 2, the power trading system 100 conducts electricity transactions with consumers using green coins. Since Green Coin is a virtual coin, transactions are not carried out by the transfer or receipt of physical coins, but rather by the rewriting of data. The data to be rewritten is stored on the blockchain of the electricity trading system 100.

[0019] A key feature of the present invention is that the validity period of the green coins generated by the coin generation unit 1, or in other words, the lifespan of the green coins, is limited to 30 minutes. Generating coins on the blockchain corresponding to the amount of electricity generated by renewable energy has been described, for example, in the aforementioned Patent Documents 1 and 2, and attempts have been made to achieve simultaneous and equal distribution. However, conventional methods satisfy the constraint of simultaneous and equal distribution within 30 minutes by having the power supply operator make announcements to consumers such as households 30 and offices / factories 40 to encourage energy conservation and request a response to reduce consumption, or by having consumers share surplus electricity with each other. Unlike the ideas in the prior art, the present invention sets the lifespan of the coins themselves to 30 minutes, and the mechanism involves consumers competing for coins with an expiration date, thereby enabling the simultaneous and equal distribution processing imposed on operators.

[0020] In the present invention, the green coins currently available are those generated up to 30 minutes prior to the present, and the green coins generated now are only usable for the next 30 minutes. Therefore, the coin control unit 2 controls the activation / deactivation of the generated green coins. Only coins generated by the gateway 22 and passed to the power trading system 100, or generated by the coin control unit 2, and generated within the last 30 minutes are valid. In other words, green coins generated by the gateway 22 or the coin generation unit 1 are automatically deactivated by the coin control unit 2 30 minutes after their generation, and charging of the amount of electricity allocated to that amount of green coin (or the remaining amount if any has already been used) to the charging devices 60, 70, and 80 stops. To stop this charging, the power trading system 100 sends an inactive signal 7 for the green coins to the power supply switching circuit 8 installed in homes 30, offices / factories 40, electric vehicles 50, etc., to automatically turn off the charging operation (see Figure 2). This makes it possible to achieve simultaneous and equal power supply and demand management in 30-minute increments. Furthermore, the power grid's transmission and distribution network includes electricity supplied from conventional power generation facilities such as thermal power plants, in addition to renewable energy sources. Therefore, even after the Green Coins are invalidated, the power supply will not actually be cut off.

[0021] To achieve the 30-minute time limit, a timestamp is required for each green coin. Figure 4 shows that a timestamp is attached to the generated green coins. In this embodiment, the timestamp attachment unit 3 attaches time information (TS) to the green coins generated by the gateway 22 and the coin generation unit 1. The blockchain generation unit 4 then blocks the green coins with the time information attached as valid green coins 5 and stores them on the blockchain within the power trading system 100. The valid green coins 5 then circulate as the subject of transactions on the communication network 6, and by purchasing them, households 30 and offices / factories 40 can use the electricity generated by the solar power plant. In this embodiment, the coin generation unit 1, timestamp attachment unit 3, and blockchain generation unit 4 are provided within the power trading system 100, but this is not necessarily the only way to go. For example, if the gateway 22 generates green coins as described above, the timestamping unit 3 in the power trading system 100 sends time information to the gateway 22, the gateway 22 performs a blocking process together with the time information and green coins, and returns the blocked green coins to the power trading system 100.

[0022] Furthermore, the reason for blocking green coins and timestamps is that blockchains have an extremely low risk of tampering and offer excellent information traceability. Since the information associated with green coins, including power generation amounts and times, can be tracked semi-permanently, it is possible to reliably determine where and when electricity was generated, who purchased it, and which consumers used it, by verifying the actual use of renewable energy.

[0023] Figure 5 is a diagram illustrating the invalidation of valid green coins 5. The coin control unit 2 stores a value such as "1" to indicate validity in the block in order to make the green coins that have just been generated by the blockchain generation unit 4 usable (i.e., valid green coins 5). Note that "0" represents invalidity. When the coin control unit 2 determines that 30 minutes have passed based on the coin generation time (timestamp) by the green coin generation unit 1, it updates the value from "1" indicating validity to "0" indicating invalidity. As a result, the valid green coin becomes an invalid green coin. Alternatively, the 30-minute interval can be defined as a 1-minute unit, and the minute information from 1 to 30 can be set for each elapsed minute. Furthermore, it may be possible to define intervals even more finely, such as 30 seconds or 15 seconds.

[0024] Alternatively, instead of adding "1" or "0" to the coin, the coin control unit 2 could determine invalidation by constantly calculating whether 30 minutes have passed since the time information (TS).

[0025] Furthermore, since the use of electricity generated by solar power means competition for green coins among consumers, in this embodiment, this will cause fluctuations in the value of the coins. While there are ways to keep the value of the coins constant, it is clear from the laws of economics that if demand is greater than supply, the value of the traded coins will be higher. Therefore, the power trading system 100 in this embodiment automatically changes the value of the coins (coin amount) in accordance with the supply and demand balance of the effective green coins 5 (see Figure 6). For example, in the summer when high electricity demand is expected, there is a tendency for green electricity to be in short supply during the daytime, and the value is set relatively higher than in winter or at night. If a power generator requests the power trading system 100 to sell for 100 yen or more and the transaction is completed at 120 yen (market price), the power trading system will deduct a predetermined fee and return the amount to the power generator. A supply and demand balance-fluctuating coin whose value is determined based on a cost curve as shown in Figure 6 will enable the sale of emission allowances, which have a fixed price in conventional emission allowance trading, at a higher price. Furthermore, in usage scenarios where immediate charging is not required, such as battery charging using charging devices 60, 70, and 80, charging will occur when the coin value is low, making it easier to balance supply and demand.

[0026] The coin value includes the cost of power generation, power transmission, and the operating company's overhead. As shown in Figure 7(A), if the power generation cost is 20 yen per 1 Wh, then a transmission cost of, for example, 5 yen / Wh must be added. These various costs can be automatically set in each blockchain when the blockchain generation unit 4 forms the valid green coins 5, and stored together with the time information as shown in the figure.

[0027] Furthermore, the system may be designed to change not only based on the supply and demand balance, but also on the effective usage time of the valid green coins mentioned above. For example, the value of a coin that has approximately 30 minutes of effective usage time remaining immediately after coin generation may be set relatively higher than the value of a valid green coin with only a short time remaining for effective usage. In this way, the power trading system 100 determines whether to activate or deactivate green coins and controls power supply according to the effective time and the supply and demand balance in the power market.

[0028] Furthermore, if there is electricity stored in charging devices 60, 70, and 80, and the supply and demand for electricity in the market becomes tight, the supply-side operator will be able to buy back the valid green coins that consumers have already purchased. This means that consumers who are buying back will not be able to use electricity, but if an incentive is provided, they will be refunded at a higher price than the amount they purchased the coins for (at the market price), so there will be consumers who want to buy back. In fact, it is possible that consumers will emerge who purchase valid green coins with the expectation of buying them back in the hopes of receiving an incentive. When buying back, the refund may be in fiat currency, or it may be a point or something that can be used to purchase electricity next time. In this way, the operator buys back the coins that consumers have purchased to charge their charging devices, thereby reducing electricity demand and facilitating the exchange of coins among consumers. In this case as well, the coin value may be set based on the remaining validity time of the valid green coins.

[0029] By the way, in order for the coin value to fluctuate in real time as described above, and for consumers to buy and sell coins based on those fluctuations, it is necessary to make the coin value and effective usage time visible so that consumers can identify them. In other words, the real-time coin value of currently available valid green coins 5 circulating on the communication network 6 should be viewable on the consumer's information terminal. To this end, the coin value may be stored in the blockchain of each valid green coin 5, or it may be managed by the coin control unit 2.

[0030] Regarding the visualization of coins, not only the coin value and effective usage time, but also the type of renewable energy derived from wind power, solar power, etc., and the coordinate information (X,Y) of the power generation location may be linked to each green coin and stored on the blockchain, allowing consumers to identify them. This means that it will be possible to select the power generation entity and power source. Consumers will have the freedom to choose renewable energy, such as being able to request wind power if there is a wind power generation facility nearby, or selecting a coin related to a power generation facility close to their location.

[0031] Furthermore, associating each coin with the coordinate information (X,Y) of the power generation location allows operators to prioritize allocating coins closer to the location of consumers. In the actual operation of the power transmission and distribution network, supplying electricity from power generation locations close to consumers is advantageous in terms of cost and stability. This is because there are grid constraints when connecting renewable energy to the power grid, such as being unable to connect to the grid, incurring high costs, or taking a long time. While strengthening the grid would solve this, in reality, increasing the number of new grids involves significant costs and time, so it is more effective to make the most of the existing grid. Therefore, it is possible to automatically detect coins derived from green electricity from power generation facilities close to consumers based on the coordinate information (X,Y) associated with the coin, and allow nearby consumers to use the found coins.

[0032] One method for searching for coins derived from green electricity generated by power plants close to consumers, based on coordinate information (X,Y), is as shown in Figure 8. For example, if a power plant X is located within a predetermined radius (not limited to a circle as shown, but can be determined based on an ellipse defined by a major axis radius and a minor axis radius) from the consumer's point (location), the transmission cost unit price is set to, for example, 5 yen / 1kWh. If the power plant Y is further away, the unit price is set to, for example, 7 yen / 1kWh. The power generation cost of power plant X and power plant Y are added to each transmission cost to determine the power generation unit price, and the two are compared. The power plant with the lower unit price is selected, and the green coin corresponding to the electricity generated at that power plant is determined as the optimal coin. An example of storing this information as a blockchain is shown in Figure 7(B). From the information in the blockchain, various information including the type, location, and time of generation of the power plant that formed the basis of the coin can be grasped, and by making this visible to consumers, they can utilize electricity from the optimal energy source.

[0033] In reality, unsold green coins will inevitably occur after they are generated. Meanwhile, new coins are continuously generated in response to electricity flow, resulting in a constant mix of old and new coins at any given time. If newly generated coins are sold before older coins that have been generated but not purchased, the older coins will remain unsold and eventually be discarded. To supply green electricity to a large number of consumers, it is desirable to have older coins purchased first to reduce unsold coins. If there aren't enough new coins, some consumers may be unable to purchase them. On the other hand, consumers who purchase new coins can resell them immediately, but it becomes increasingly difficult to sell older coins as time passes. Selling all the old coins in 30 minutes is insufficient; it would require many times that amount of time and simultaneous, equal volume, which would compromise the stability of the power grid. Therefore, having new coins purchased as much as possible contributes to power grid stability.

[0034] Therefore, when the power trading system 100 determines, based on pre-created power generation plans and weather forecast data, that the power generation situation will remain largely unchanged for some time, it sells older coins to consumers first (in this case, lowering the coin price) to ensure that power is supplied to as many consumers as possible. On the other hand, in cases of power supply with regional factors such as the afternoon hours in summer when air conditioning is heavily used, or industrial areas with a high concentration of factories that consume a lot of power, the system prioritizes maintaining a constant balance between power supply and demand, and actively consumes new coins from the beginning (in this case, increasing the coin price) to maintain a balance between supply and demand. Intentionally fluctuating the price of coins is extremely important in achieving these goals.

[0035] <Other Embodiments> Next, we will further describe an embodiment of charging electricity generated from renewable energy. Figure 9 shows the structure of the charging devices 60, 70, and 80. The basic concept of these charging devices used in homes 30, offices / factories 40, and electric vehicles 50 is the same, and here we will explain using the charging device 80 for electric vehicles 50 as an example. Similar to the power supply to electric vehicles 50, the charging device 80 is connected to receive current from the solar power plant 10 via the power transmission and distribution network 20. However, unless the control circuit 81 outputs a command to the power trading system 100 to purchase green coins, the cut-off switch 82 cuts off the power supply to the charging device 80. If green coins can be purchased, the cut-off switch 82 switches to supplying power and starts charging.

[0036] Figure 10 shows an alternative use of the charging devices 60, 70, and 80. The difference from Figure 9 is the presence of the green coin pool 65. As mentioned above, due to the regulation of simultaneous use of equal amounts, the effective usage time for green coins is 30 minutes, but they can only be stored in the green coin pool 65 within the charging device. In the example in Figure 10, for example, three green coins purchased at 10:00 can still be used even after 10:30 without becoming invalid. To prevent unlimited use, a maximum storage time within the green coin pool 65 can be set in advance and stored in each green coin block, and the coins can be extinguished once the maximum storage time is exceeded. Figure 11 shows an example of the use of the charging device 80 provided on the electric vehicle 50. When charging the electric vehicle 50, the charging device 80 is charged through the control unit 8. As the electric vehicle 50 is driven, the green coins in the green coin pool 85 managed by the control unit 8 are consumed. In other words, the depreciation circuit 86 in the control unit 8 deactivates the green coins corresponding to the amount of electricity used for driving. Also, if some green coins remain in the green coin pool 85 and it is desired to use them for electricity consumption in the home 30, the charging device 80 and the home 30 are connected to transmit and distribute electricity, and the green coins in the green coin pool 85 are consumed.

[0037] Charging devices 60, 70, and 80 monitor the charging status of the green coin pools 65 and 85. For example, if the charging level is less than 50% of the total charging amount, they will continue charging until it reaches at least 50%. On the other hand, if the charging level exceeds 50% of the total charging amount, they will query the power trading system 100 for information on the supply and demand situation within the communication network 6. If there is a 30-minute shortage of simultaneous and equal power across the entire communication network, they will automatically stop the charging process to contribute to grid stability. If there is a 30-minute surplus of simultaneous and equal power, they will continue the charging process. In other words, charging devices 60, 70, and 80 are equipped with charge amount control units that grasp the supply and demand situation within the communication network 6 from the power trading system 100 and automatically control the amount of charging.

[0038] Although the green coin pool 85 and the depreciation circuit 86 are shown as being provided in the electric vehicle 50, they exist as virtual components and can be treated as being able to process the consumption of green coins in conjunction with the power trading system 100. [Explanation of Symbols]

[0039] 1. Coin generation unit 2. Coin Control Unit 3. Timestamp assignment section 4. Blockchain Generation Unit 5 valid green coins 6. Communication Network 8 Control Unit 10. Solar power generation equipment 22 Gateways 30 home 40 Office / Factory 50 Electric Vehicles 60 Charging device 65 Green Coin Pool 82 Cutting machine 100 Electricity Trading Systems

Claims

1. A power trading system for supplying electricity generated from renewable energy sources, A means for generating virtual coins in accordance with the amount of electricity generated, A timestamping means for identifying the time the virtual coin was generated, A blockchain generation unit that associates the aforementioned time with the aforementioned virtual coin to create a blockchain, The coin control means for controlling the virtual coin, (1) A signal is transmitted to the power controller of a consumer that has purchased the virtual coins, supplying an amount of electricity corresponding to the virtual coins. (2) In accordance with the amount of electricity used by the consumer, the purchased virtual coins are virtually extinguished, (3) The coin control means determines whether or not a predetermined time has elapsed since the aforementioned time, and invalidates the virtual coin so that it cannot be used after the predetermined time has elapsed, A power trading system equipped with [features / equipment].

2. The electricity trading system according to claim 1, wherein the blockchain generation unit further links the type of renewable energy, the location of the renewable energy generation, the distance between the location of the renewable energy generation and the location of the consumer who intends to purchase the virtual coin, and the generation cost and supply cost of the renewable energy as additional information to the virtual coin and creates a blockchain.

3. The electricity trading system according to claim 2, wherein the value of the virtual coin fluctuates based on at least one of the time and the additional information.

4. The electricity trading system according to claim 2 or 3, wherein the price of the virtual coin, the time, and the additional information are provided to any consumer who has purchased or plans to purchase the virtual coin, and the system accepts requests from such consumers to purchase or sell the virtual coin.

5. When the pre-charged power is stored in the charger, the coin control means, Even after the predetermined time has elapsed, the virtual coins are not invalidated and power can be used from the charger, and the virtual coins are extinguished according to the amount of power used. The power trading system according to claim 4, wherein, upon receiving a request to sell the virtual coins, the system returns the virtual coins to be sold and pays consideration corresponding to the market price of the virtual coins at the time of sale.

6. The power trading system according to claim 5, wherein the charger is configured to perform the function of the coin control means.

7. The power trading system according to claim 1, wherein the means for generating the virtual coin and the means for assigning the timestamp are provided at a gateway between the power trading system and a renewable energy power generation facility.

Images