JP7083437B2 - Electric power transaction history generation system - Google Patents

Description

The present invention relates to an electric power transaction history system, and more particularly to a technique for ensuring the traceability of generated electric power by using a blockchain technique.

In recent years, "blockchain technology (distributed ledger technology)" that guarantees the authenticity of transaction information by using a hash function and public key cryptosystem is about to be used in various fields. As an example, in a cryptocurrency transaction, cryptocurrency transaction information (hereinafter referred to as "transaction") is broadcast to all terminals using the cryptocurrency. The transmitted transactions are verified for authenticity by a terminal called a miner, and when approved, they are grouped into blocks and recorded in a ledger called a blockchain. In cryptocurrency transactions, transactions are prevented from being tampered with by having miners perform a calculation process called mining and then adding blocks to the blockchain.

Patent Document 1 discloses a technique for increasing the degree of guarantee of authenticity of transaction information using such a blockchain. Further, Patent Document 2 proposes a technique for realizing a mechanism for proving green power by using an electronic signature technique.

JP-A-2017-207860 Japanese Unexamined Patent Publication No. 2011-175556

By the way, in recent years, there is an increasing need among companies and local governments to actively use renewable energy power (hereinafter referred to as "renewable energy power"). It can be presumed that the background is that the report to CDP (Carbon Disclosure Project), which discloses the company's efforts toward climate change, is directly linked to the evaluation of shareholders including institutional investors. .. Here, "traceability (specification of power source)" is required for the usage requirement of renewable energy, but such a technique does not exist yet. That is, once the generated power enters the power network (transmission network), it is assimilated with other power, so that it is no longer possible to specify the power generation source.

Therefore, an object of the present invention is to provide a technique capable of ensuring the traceability of renewable energy power.

According to the present invention, the present invention includes a supplier terminal connected to a power generation device and managed by a supplier, a consumer terminal managed by a consumer who desires to use the electric power generated by the power generation device, and a transaction history generation terminal. , A power transaction history generation system
The supplier terminal notifies the transaction history generation terminal of the supply amount of the electric power generated by the power generation device to be transmitted to a predetermined power network.
The transaction history generation terminal issues a transaction currency corresponding to the notified supply amount and sends it to the supplier wallet of the supplier.
The consumer terminal notifies the transaction history generation terminal of the amount of demand received from the supplier via the predetermined power network.
The transaction history generation terminal generates a transaction of the transaction currency corresponding to the demand amount and notifies the supplier terminal.
The supplier terminal sends a predetermined amount of the transaction currency from the supplier wallet to the receiver wallet on the demand side based on the transaction.
A power transaction history generation system is obtained.

According to the present invention, it is possible to provide a P2P trading platform for renewable energy power having traceability, and it is also possible to prevent falsification of history by further utilizing blockchain technology.

It is an image diagram which shows the electric power sale processing by a power generation apparatus. It is an image diagram which shows the state which a plurality of generators and a plurality of consumers trade electric power through an electric power network. It is a conceptual diagram showing the state of one-to-one electricity trading between a supplier and a consumer and the movement of tokens. It is a figure which shows the terminal which comprises the electric power transaction history generation system by embodiment of this invention. It is a figure which shows the functional block diagram of the supplier terminal shown in FIG. It is a figure which shows the functional block diagram of the transaction history generation terminal of FIG. It is a figure which shows the functional block diagram of the consumer terminal of FIG. It is a figure which shows the functional block diagram about the wallet management of the transaction history generation terminal of FIG. It is a figure which shows the functional block diagram about the wallet management of the supplier terminal of FIG. It is a figure which shows the functional block diagram about the wallet management of the consumer terminal of FIG. It is a figure which shows the flow of the process of the electric power transaction history generation system by embodiment of this invention. It is an image diagram which shows the flow of electric power when the demand amount exceeds the power generation amount. It is an image diagram which shows the flow of electric power when the amount of power generation exceeds the amount of demand.

The contents of the embodiments of the present invention will be described in a list. The electric power transaction history generation system (hereinafter, simply referred to as “system”) according to the embodiment of the present invention has the following configurations.
[Item 1]
Electric power transaction history generation including a supplier terminal connected to a power generation device and managed by a supplier, a consumer terminal managed by a consumer who desires to use the power generated by the power generation device, and a transaction history generation terminal. It ’s a system,
The supplier terminal notifies the transaction history generation terminal of the supply amount of the electric power generated by the power generation device to be transmitted to a predetermined power network.
The transaction history generation terminal issues a transaction currency corresponding to the notified supply amount and sends it to the supplier wallet of the supplier.
The consumer terminal notifies the transaction history generation terminal of the amount of demand received from the supplier via the predetermined power network.
The transaction history generation terminal generates a transaction of the transaction currency corresponding to the demand amount and notifies the supplier terminal.
The supplier terminal sends a predetermined amount of the transaction currency from the supplier wallet to the consumer wallet of the consumer based on the transaction.
Electric power transaction history generation system.
[Item 2]
The electric power transaction history generation system according to item 1.
The transmitted power amount and the received power amount relate to the amount of power transmitted and received within a predetermined unit time in the future.
Electric power transaction history generation system.
[Item 3]
The electric power transaction history generation system according to item 1 or item 2.
The transaction history generation terminal receives a request regarding the demand amount from a plurality of consumer terminals, and generates the transaction corresponding to the request with the supply amount as an upper limit.
Electric power transaction history generation system.
[Item 4]
The electric power transaction history generation system according to any one of items 1 to 3.
The supplier terminal performs a disposal process of the transaction currency sent to the consumer wallet after consuming electric power corresponding to the demand amount.
Electric power transaction history generation system.
[Item 5]
The electric power transaction history generation system according to any one of items 1 to 3.
The transaction currency is a token generated using distributed ledger technology.
Electric power transaction history generation system.

<Details of the embodiment>
Hereinafter, the system according to the embodiment of the present invention will be described with reference to the drawings.

<Overview>
In recent years, the utilization of renewable energy power represented by photovoltaic power generation has been made by the self-consumption method and the total power sale method. FIG. 1A is an image diagram showing a self-consumption method. According to this method, the generated electric power can be used for household consumption and the surplus electric power can be sold to the electric power company as surplus electric power. Here, when the electricity sale process is performed, the supplier is subjected to a predetermined payment process (including offsetting process with the electricity bill). On the other hand, FIG. 2B is an image diagram showing a total power selling method. In such a method, large-scale power generation is often performed using a vast idle land or the like for the purpose of selling all the generated power.

In recent years, the liberalization of electric power transactions has progressed, and for example, as shown in FIG. 2, it is theoretically possible to sell the electric power generated by a plurality of suppliers 1 to a plurality of consumers 2 via a power transmission network 30. Is now possible. However, as mentioned above, the power generated by individual suppliers, once in the transmission network, is currently difficult to trace.

The present invention thus realizes traceable electric power trading between a plurality of suppliers and a plurality of consumers. Specifically, as shown in FIG. 3, the electric power generated by the supplier 1 (for example, 100 kWh) is transmitted to the power transmission network 30 via a utility pole or the like. When the consumer 2 uses 100kWh of electric power in the same time zone, the "electric power including the electric power generated by the supplier 1" is actually supplied from the power transmission network.

On the other hand, on the blockchain network, tokens corresponding to transmitted power (power to be traded: 100kWh) are sent from the wallet 100 of the supplier 1 to the wallet 200 of the consumer 2. At this time, if the token is traded after grasping the "on" and "out" of electric power in a certain time zone (for example, the amount of power generation and the amount of demand every 30 minutes), the transaction of electric power is pseudo. It is possible to trace to.

Further, the consumer 2 can give the act of purchasing the token the same meaning as purchasing the electric power from the supplier 1.

<System terminal configuration>
As shown in FIG. 4, the system according to the embodiment of the present invention has a supplier terminal of a supplier 1 who wants to generate electricity and sell surplus electric power, and a consumer 2 who wants to purchase the generated electric power. It has at least a consumer terminal and a transaction history generation terminal (terminal of a management company) that manages transactions by issuing the tokens described above.

As shown in FIG. 5, the supplier terminal includes a power generation amount monitoring unit, a power control unit, a surplus power management unit, and a communication unit. The power generation amount monitoring unit acquires information on the power generated from the power generation device (SQ1). As the power generation device according to the present embodiment, for example, a solar power generation device may be adopted. In the self-consumption method described above, the power generation device supplies electric power to the electric power consuming equipment in the home (SQ2). For example, in the case of the total power selling method, there is no power consuming device. The power control unit acquires information on the amount of power generation from the power generation amount monitoring unit (SQ3), and separates the generated power from the power consumption device and the surplus power. The surplus power management unit receives information on the amount of surplus power from the power control unit (SQ4), manages the information on the surplus power, transmits the information to the communication unit (SQ5), and transmits it to the transaction history generation terminal (SQ5). SQ6). The power control unit controls the power generation device based on the breakdown of the power used in the home and the surplus power, supplies power to the power consuming equipment (SQ2), and transmits the surplus power to the power transmission network (SQ8). ).

As shown in FIG. 6, the transaction history generation terminal includes a communication unit, a conversion unit, a Token management unit, and a Token issuing unit. The communication unit acquires information on the amount of power generation from the above-mentioned supplier terminal (SQ9). The conversion unit receives information on the amount of power generation from the communication unit (SQ10), and calculates the number of Token from the amount of power generation based on a predetermined rate. In the present embodiment, 100kWh = 100Token is set to simplify the explanation. The conversion rate may be a fixed rate or a variable rate. When the Token management unit acquires the converted information (SQ11), it manages and stores the number of Tokens to be issued together with the issued Token information and information such as who issued the information and how many. The number of Tokens to be issued is transmitted to the Token issuing unit (SQ12), and the issued Token and destination information is sent to the communication unit (SQ13). The communication unit sends the issued Token to the supplier wallet associated with the supplier (SQ14).

As shown in FIG. 7, the consumer terminal includes a power demand receiving unit and a communication unit. The power demand reception unit uses a device that has both a function of measuring and recording electricity usage every 30 minutes and a communication function, such as a smart meter, to power the entire household of the consumer. Obtain demand data (SQ15). The data is sent to the power demand reception unit (SQ16). Calculate (forecast) the demand for electricity. The calculated power demand is sent to the communication unit (SQ17) and further to the transaction history generation terminal (SQ18). The power consuming equipment of the consumer is supplied with power from the power transmission network (SQ19).

Subsequently, the wallet management configuration of the transaction generation terminal will be described with reference to FIG. As shown in the figure, the transaction history generation terminal includes a communication unit and a transaction generation unit. The communication unit acquires information on the demand amount from the consumer terminal (SQ20). The transaction generator calculates the number of Tokens that the consumer should receive from the supplier based on a predetermined rate with respect to the demand amount. The conversion rate may be a fixed rate, a variable rate, or a rate condition different from the rate used in the above-mentioned calculation of the supplier. The Token information is transmitted to the communication unit (SQ22) and transmitted to the supplier terminal (SQ23).

The wallet management configuration of the supplier terminal will be described with reference to FIG. As shown, the supplier terminal includes a communication unit, a wallet management unit, and a transaction execution unit. The communication unit receives transaction information from the transaction history generation terminal (SQ24). The received transaction information is transmitted to the wallet management unit that manages the wallet of the supplier (SQ25), and the transaction is executed based on the transaction information (SQ26). The supplier Token is sent to the consumer's wallet based on the executed transaction (SQ27 and SQ28).

The wallet management configuration of the consumer terminal will be described with reference to FIG. As shown in the figure, the consumer terminal includes a communication unit, a wallet management unit, and a power consumption monitoring unit. The communication unit receives Token regarding the execution of the transaction by the supplier (SQ29). The wallet management unit manages the number of Tokens received (SQ30). The received Token has, so to speak, a property like the right to use the power generation amount of the supplier. Therefore, when the power consumption monitoring unit receives the Token information (SQ31), it acquires the power demand data of the entire household and confirms whether or not the received electric energy equivalent to the Token has been used up.

FIG. 11 is a diagram summarizing the above flow into a processing flow. First, the supplier terminal notifies the transaction history generation terminal of the amount of power generation (SQ601). From the wallet of the transaction history generation terminal, Token corresponding to the amount of power generation is sent to the wallet of the supplier (SQ603). On the other hand, the consumer terminal notifies the transaction history generation terminal of the demand amount (SQ605). The transaction history generation terminal generates a transaction for sending a Token corresponding to a demand amount from a supplier to a consumer (SQ607). The generated transaction information is transmitted from the transaction history generation terminal to the supplier terminal as a transaction instruction (SQ609). In response to the transaction, the required Taken is sent from the wallet of the supplier terminal to the wallet of the consumer terminal (SQ611).

In the above-described embodiment, the amount of power generation and the amount of demand are the same. The following description is for cases where they do not match. As shown in FIG. 12, for example, when the supplier 1 generates 100 kWh, 100 Token is sent to the consumer 2. Consumers can use 100kWh of electricity by trading (purchasing) 100 Token. However, since the demand amount of the consumer 2 is 120 kWh, it is not enough to consider the power generation only by the supplier (100 kWh). Therefore, when the demand amount exceeds the power generation amount in this way, the power supply may be received from the power transmission network 30 as usual for the portion insufficient in the demand amount.

On the other hand, when the amount of power generation exceeds the amount of demand, it may be supplied to another consumer 2a as shown in FIG. 13, and when surplus power is generated, power is transmitted. You can return it to the network (sell power).

The embodiments described above are merely examples for facilitating the understanding of the present invention, and are not intended to limit the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof, and the present invention includes its equivalents.

1 Supplier 2 Consumer 3 Power generation equipment 30 Transmission network 100 Supplier wallet 200 Consumer wallet

Claims (2)

For each of the plurality of power generation devices, a means for acquiring the amount of power to be transmitted to a predetermined power network within a predetermined unit time among the electric power generated by the power generation device, and
A means of issuing a transaction currency corresponding to the supply amount and sending it to the supplier wallet of the power supplier, and
For each of the plurality of consumers, a means for acquiring the amount of demand that the consumer receives within the unit time via the predetermined power network, and
A means for generating transactions in the transaction currency corresponding to the demand amount, up to the supply amount from the plurality of power generation devices, and
A means of sending the transaction currency from the supplier wallet to the corresponding consumer's consumer wallet based on the transaction.
Information processing system equipped with. The information processing system according to claim 1, wherein the transaction currency is a token generated by using a distributed ledger technique.

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