CN115439255A - A trusted transaction method for layered virtual power plants based on blockchain - Google Patents

Abstract

The invention discloses a block chain-based trusted transaction method for a layered virtual power plant, which relates to the technical field of block chains, and comprises the following steps: generating a block chain internal transaction chain and a block chain external transaction chain; generating a virtual power plant layered transaction framework based on a blockchain technology according to the blockchain internal transaction chain and the blockchain external transaction chain; according to a virtual power plant layered transaction framework based on a block chain technology, receiving transaction information registered by a distributed resource main body, and completing a transaction process of a distributed resource layer of a virtual power plant and a virtual power plant aggregation regulation and control layer; according to a block chain technology-based virtual power plant hierarchical transaction framework, shen Baoliang submitted by a distributed resource main body and a declaration time period are obtained, and a transaction flow of a virtual power plant aggregation regulation and control layer and a virtual power plant external market layer is completed. The method solves the problem of insufficient block chain capacity caused by mass data, and realizes simultaneous transaction inside and outside the virtual power plant.

Description

A trusted transaction method for layered virtual power plants based on blockchain

technical field

The invention relates to the technical field of block chains, in particular to a trusted transaction method for layered virtual power plants based on block chains.

Background technique

Through advanced information and communication technology, measurement tools and application software systems, virtual power plants can aggregate distributed power sources, energy storage equipment, demand-side resources and other DERs in a certain area and coordinate and control them, and can be used as a Such special power plants participate in the construction and trading of electricity markets. The virtual power plant presents a two-level characteristic, integrating resources internally and participating in the market externally. Since the various resources aggregated internally belong to different subjects and are independent of each other; when participating in the market externally, the virtual power plant also trades with other independent subjects. In order to maintain the long-term stable development of the virtual power plant, a decentralized, fair and just transaction method is urgently needed.

Blockchain technology is a new application technology of the "Internet +" new format, and its main characteristics are decentralization, not easy to tamper, and trustless. It is often used in scenarios such as distributed energy transactions, demand response, and electricity market transactions. The private alliance chain has a higher degree of sharing. Through the consensus mechanism, asymmetric encryption, and P2P protocol, it is suitable for energy trading scenarios with large transaction scale, high transaction frequency, and privacy protection. Therefore, the introduction of blockchain technology into virtual power plants can solve the problem of fair and just transactions in and out of virtual power plants.

First, however, there are few studies on internal and external transactions of existing blockchain technology in virtual power plants. At present, the application of blockchain technology is limited to distributed resource layer transactions, but there are few complete sets of processes for simultaneous internal and external transactions of virtual power plants. involve. Second, due to the large number of distributed energy entities and market entities, massive data will be generated when virtual power plants participate in internal and external transactions. It is necessary to consider the problem of insufficient blockchain capacity caused by massive data. Third, the application of blockchain technology in distributed energy layer transactions is limited to simulation. In the current energy transaction demonstration project, there is also the problem of "pseudo-blockchain application", and there is a lack of trading platforms that can participate in the underlying distributed resource layer.

Therefore, on the basis of the existing blockchain technology, how to solve the problem of insufficient blockchain capacity due to massive data, realize simultaneous internal and external transactions of virtual power plants, and build a trading platform that can participate in the underlying distributed resource layer has become an important issue in the field. Problems that technicians urgently need to solve.

Contents of the invention

In view of the above problems, the present invention proposes a blockchain-based layered virtual power plant trusted transaction method that at least solves some of the above technical problems. This method solves the problem of insufficient blockchain capacity caused by massive data, and realizes the virtual Simultaneous transactions inside and outside the power plant.

An embodiment of the present invention provides a blockchain-based layered virtual power plant trusted transaction method, including:

Construct the virtual power plant distributed resource layer, the virtual power plant aggregation control layer and the virtual power plant external market layer respectively, and generate the blockchain internal transaction chain and the blockchain external transaction chain; according to the blockchain internal transaction chain and the blockchain external Transaction chain, generating a layered transaction framework for virtual power plants based on blockchain technology;

According to the layered transaction framework of the virtual power plant based on blockchain technology, the transaction information registered by the distributed resource subject is received, and the transaction process between the distributed resource layer of the virtual power plant and the aggregation control layer of the virtual power plant is completed;

According to the layered trading framework of the virtual power plant based on blockchain technology, the declaration amount and the declaration time period submitted by the distributed resource subject are obtained, and the transaction process between the aggregation control layer of the virtual power plant and the external market layer of the virtual power plant is completed.

Further, the internal transaction chain of the block chain is composed of transactions between the distributed resource layer of the virtual power plant and the aggregation control layer of the virtual power plant; the distributed resource layer of the virtual power plant and the aggregation control layer of the virtual power plant perform information query through the block chain and storage;

The virtual power plant distributed resource layer includes distributed photovoltaic main body, wind power main body, electric vehicle main body, demand response main body and energy storage main body;

The aggregation control layer of the virtual power plant is dominated by the control center of the virtual power plant.

Further, the external transaction chain of the blockchain is composed of transactions at the virtual power plant aggregation control layer and the virtual power plant external market layer;

The aggregation control layer of the virtual power plant and the external market layer of the virtual power plant perform information query and storage through the block chain.

Further, receiving the transaction information registered by the distributed resource subject, and completing the transaction process between the virtual power plant distributed resource layer and the virtual power plant aggregation control layer, including:

Receive transaction information registered by distributed resource entities;

Generate an audit result based on the transaction information; generate a distributed resource entity that has passed the audit based on the audit result; the audit result includes the reputation of the distributed resource entity;

Obtain the price setting value of the approved distributed resource subject, and publish the price setting value through the smart contract module on the block;

Updating the reputation of the distributed resource subject and storing it again on the block; generating settlement results; completing the transaction process between the distributed resource layer of the virtual power plant and the aggregation control layer of the virtual power plant.

Further, the reputation of the distributed resource subject is updated by the following formula:

为第t次交易时主体s的信誉度；

为主体s前t-1次交易的信誉总得分；

为主体s第t次交易的信誉得分；t为交易次数。In the above formula,

is the credibility of subject s at the time of the t -th transaction;

is the total reputation score of t -1 transactions before subject s ;

is the reputation score of the tth transaction of subject s ; t is the number of transactions.

Further, the settlement result is determined by the following formula:

为主体s的交易结果；

为预设交易价格；

为主体s的交易量；

为主体s的单位偏差惩罚成本。In the above formula,

is the transaction result of subject s ;

is the default transaction price;

is the transaction volume of subject s ;

Penalizes the cost per unit deviation for agent s .

Further, the declaration quantity and declaration time period submitted by the distributed resource subject are obtained, and the transaction process between the aggregation control layer of the virtual power plant and the external market layer of the virtual power plant is completed, including:

Obtain the declaration amount and declaration time period submitted by the distributed resource subject; use the marginal clearing method to obtain the clearing price of each time period;

Generate the settlement result of the virtual power plant according to the clearing price of each time period; complete the transaction process between the aggregation control layer of the virtual power plant and the external market layer of the virtual power plant.

Further, the settlement result of the virtual power plant is calculated by the following formula:

为虚拟电厂的结算结果；

为各阶段的出清价格；

为实际出清量；

为要求出清量；

为单位出清量偏差惩罚成本。In the above formula,

is the settlement result of the virtual power plant;

is the clearing price of each stage;

is the actual clearance amount;

For the required clearance amount;

Penalizes costs for unit clearance deviations.

The beneficial effects of the above-mentioned technical solutions provided by the embodiments of the present invention at least include:

The embodiment of the present invention provides a blockchain-based layered virtual power plant trusted transaction method, including: respectively constructing a virtual power plant distributed resource layer, a virtual power plant aggregation control layer and a virtual power plant external market layer, and generating a block chain internal Transaction chain and blockchain external transaction chain; According to the blockchain internal transaction chain and blockchain external transaction chain, a virtual power plant layered transaction framework based on blockchain technology is generated; according to the virtual power plant layered based on blockchain technology The transaction framework receives the transaction information registered by the distributed resource subject, and completes the transaction process of the distributed resource layer of the virtual power plant and the aggregation control layer of the virtual power plant; according to the layered transaction framework of the virtual power plant based on blockchain technology, obtains the submission of the distributed resource subject Complete the transaction process between the aggregation control layer of the virtual power plant and the external market layer of the virtual power plant. This method solves the problem of insufficient block chain capacity caused by massive data, and realizes simultaneous transactions inside and outside the virtual power plant.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a flowchart of a trusted transaction method for a layered virtual power plant based on blockchain provided by an embodiment of the present invention;

Fig. 2 is the hierarchical transaction frame diagram of the virtual power plant based on block chain technology provided by the embodiment of the present invention;

Fig. 3 is a block chain internal transaction chain frame diagram of the distributed resource layer and the aggregation control layer provided by the embodiment of the present invention;

Fig. 4 is a transaction flowchart of the distributed resource layer and the aggregation control layer provided by the embodiment of the present invention;

Fig. 5 is a frame diagram of the internal transaction chain of the blockchain provided by the aggregation control layer and the external market layer in the embodiment of the present invention;

Fig. 6 is a flow chart of transactions between the aggregation regulation layer and the external market layer provided by the embodiment of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

An embodiment of the present invention provides a blockchain-based layered virtual power plant trusted transaction method, as shown in Figure 1, including:

Construct the virtual power plant distributed resource layer, the virtual power plant aggregation control layer and the virtual power plant external market layer respectively, and generate the blockchain internal transaction chain and the blockchain external transaction chain; according to the blockchain internal transaction chain and the blockchain external transaction chain , generate a virtual power plant layered transaction framework based on blockchain technology;

According to the virtual power plant layered transaction framework based on blockchain technology, the transaction information registered by the distributed resource subject is received, and the transaction process between the distributed resource layer of the virtual power plant and the aggregation control layer of the virtual power plant is completed;

According to the layered trading framework of virtual power plants based on blockchain technology, the declaration amount and declaration time period submitted by distributed resource entities are obtained, and the transaction process between the aggregation control layer of virtual power plants and the external market layer of virtual power plants is completed.

The method is described in detail below:

Design of hierarchical transaction framework for virtual power plants based on blockchain technology:

Referring to Figure 2, the hierarchical transaction framework of the virtual power plant based on blockchain technology is divided into the internal transaction chain of the blockchain and the external transaction chain of the blockchain.

The internal transaction chain of the blockchain is the transaction between the distributed resource layer of the virtual power plant and the aggregation control layer. The distributed resource layer includes distributed photovoltaics, wind power generation, electric vehicles, demand response, energy storage and other entities. The aggregation control layer is mainly dominated by the control center of the virtual power plant. The distributed resource layer and the aggregation control layer query and store information through the blockchain, so as to complete internal transactions and realize resource aggregation.

The external transaction chain of the blockchain is the transaction between the virtual power plant aggregation control layer and the external market layer. The transaction subjects in the external market layer include other virtual power plants, other power suppliers, power demanders, etc. The virtual power plant aggregation control layer and the external market layer conduct information query and storage through the blockchain, thereby completing external transactions in the electric energy market and the peak-shaving auxiliary service market.

Distributed resource layer and aggregation control layer transaction design:

Referring to Figure 3, it is the blockchain internal transaction chain framework of the distributed resource layer and the aggregation control layer. As can be seen from the transaction in Figure 3, the front-end module includes a registration module and an approval module. The distributed resource layer needs to submit relevant information through the registration module before participating in the virtual power plant aggregation; the approval module is the virtual power plant aggregation control center to review the registration information submitted by the distributed resource layer. Relevant registration information and audit information are stored in blocks. At the same time, a smart contract module is also set in the blockchain. The smart contract includes the transaction price, transaction scale and transaction execution between the distributed resource layer main body and the virtual power plant control center. For the queryability of transaction information, relevant transaction information are stored on a block (referring to an element of the blockchain). At the same time, in order to ensure the authenticity of both parties to the transaction, the transaction is also carried out on the block.

Referring to Figure 4, it is the transaction process between the distributed resource layer and the aggregation control layer, including:

(1) Distributed resource entities register according to their own actual conditions, including: name, email address, user role, user name and password; power generation companies such as wind and solar need to submit installed capacity; specific geographical location of power plants, historical output curves; energy storage providers It is necessary to submit the installation capacity, historical charging and discharging curves, etc.; the electric vehicle subject submits charging curves, mileage and other related parameters; the demand response subject submits the maximum scale that can be responded to, and the response time period.

(2) Review of virtual power plant operators. For new entities, the main review is whether the scale can reach the basic standard, as shown in formula (1). In addition, new entities such as scenery also need to evaluate the peak-to-valley difference of their output, if the peak-to-valley difference exceeds a certain standard upper limit, the audit will not pass, as shown in formula (2). For the old entity, it mainly evaluates whether the settlement stage can be settled in accordance with the contract requirements, and the credibility value is used for evaluation. The calculation of the credibility value is shown in formula (3); if the credibility value is lower than a certain value, the old entity The credibility evaluation of is not passed, as shown in formula (4). The virtual power plant operator submits the audit results of each subject to the storage area for query by the distributed resource layer subject and the virtual power plant operator.

（1）

(1)

（2）

(2)

（3）

(3)

（4）

(4)

为第s类资源主体注册规模量；

为第s类资源主体注册规模量下限；

、

为风力发电与光伏发电的峰谷差；

、

为风力发电与光伏发电峰谷差的上限值；

为第t次交易时主体s的信誉度；

为主体s前t-1次交易的信誉总得分；

为主体s第t次交易的信誉得分；t为交易次数；

为信誉度最低标准。In the formula:

Register the scale amount for the s -type resource entity;

The lower limit of the registration scale for the s -type resource entity;

,

is the peak-to-valley difference between wind power generation and photovoltaic power generation;

,

is the upper limit of the peak-to-valley difference between wind power generation and photovoltaic power generation;

is the credibility of subject s at the time of the t -th transaction;

is the total reputation score of t -1 transactions before subject s ;

is the reputation score of subject s ’ t -th transaction; t is the number of transactions;

The minimum standard of credibility.

(3) Virtual power plant operators conduct transactions with approved distributed resource entities. The virtual power plant sets prices (price setting) for each type of resource subject according to the registration information submitted by the distributed resource subject, and publishes the price in the smart contract module on the block. Various resource entities submit the transaction scale according to the price set by the virtual power plant operator, and submit the transaction scale to the block.

(4) Virtual power plant operators and distributed resource entities that have passed the review enter the stage of transaction execution and transaction settlement. Analyze whether each distributed resource subject conducts transactions according to the submitted transaction scale. If so, it will be recorded as 1, otherwise it will be recorded as 0, and will be written into the block, and the credibility of each subject will be updated according to formula (3). Save again. The settlement result is determined according to the actual transaction scale of each subject of distributed resources and formula (5), and the settlement result is also stored on the block.

（5）

(5)

为主体s的交易结果；

为虚拟电厂运营商为分布式资源主体s制定的交易价格；

为主体s的交易量；

为主体s的单位偏差惩罚成本。In the formula:

is the transaction result of subject s ;

The transaction price set by the virtual power plant operator for the distributed resource entity s ;

is the transaction volume of subject s ;

Penalizes the cost per unit deviation for agent s .

Aggregation control layer and external market layer transaction design:

Referring to Figure 5, it is the blockchain external transaction chain framework of the aggregation control layer and the external market layer. It can be seen from Figure 5 that the front-end module includes a declaration module and an information release module, and the declaration module is mainly for virtual power plant operators to submit the declaration amount and the time period for declaration before market transactions. The information release module is the clearing price proposed by the market operation center based on the declared volume of each subject in the market and the market demand, and the clearing volume of each subject. The data of the declaration module and the information release module are all stored on the block. At the same time, a smart contract module is also set in the blockchain. The smart contract includes the transaction price, transaction scale and transaction execution of the virtual power plant control center in the market. In order to make the transaction information queryable, the relevant transaction information is stored in the on the block. At the same time, in order to ensure the authenticity of both parties to the transaction, the transaction is also carried out on the block.

Referring to Figure 6, it is the transaction process between the aggregation control layer and the external market layer, including:

(1) Publication of requirements and application stage. The information announcement module of the market operator on the block announces the market demand, the virtual power plant operator invokes the smart contract to query the scale that can be declared, and submits the declared amount in the declaration module, and the market demand and the declared amount are stored in the block respectively.

(2) Clearing stage. Market operators use the marginal clearing method to obtain the clearing prices for each time period based on the declaration volume and declaration time period submitted by each subject, and the clearing prices are also announced and stored in the information announcement module.

(3) Settlement stage. The clearing price of the virtual power plant is queried in the information disclosure module. The market operator performs the settlement of the virtual power plant according to the actual clearing amount of the virtual power plant and the required clearing amount. The settlement rule is carried out according to formula (6), and the settlement result is also stored on the block .

（6）

(6)

为虚拟电厂的结算结果；

为出清价格；

为实际出清量；

为要求出清量；

为单位出清量偏差惩罚成本。In the formula:

is the settlement result of the virtual power plant;

is the clearing price;

is the actual clearance amount;

For the required clearance amount;

Penalizes costs for unit clearance deviations.

The blockchain-based layered virtual power plant trusted transaction method provided in this embodiment solves the problem of insufficient blockchain capacity caused by massive data through a layered transaction structure; it proposes a specific process for blockchain technology to trade inside and outside the virtual power plant and mechanism; build a trading platform that the underlying distributed resource layer can participate in. It solves the problem of insufficient block chain capacity caused by massive data, realizes simultaneous transactions inside and outside the virtual power plant, and builds a trading platform that can participate in the underlying distributed resource layer.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (8)

1. A block chain-based layered virtual power plant credible transaction method is characterized by comprising the following steps:

respectively constructing a virtual power plant distributed resource layer, a virtual power plant aggregation regulation and control layer and a virtual power plant external market layer, and generating a block chain internal transaction chain and a block chain external transaction chain; generating a virtual power plant hierarchical transaction framework based on a block chain technology according to the block chain internal transaction chain and the block chain external transaction chain;

receiving transaction information registered by a distributed resource main body according to the virtual power plant hierarchical transaction framework based on the block chain technology, and completing a transaction flow of the virtual power plant distributed resource layer and the virtual power plant aggregation regulation and control layer;

and acquiring Shen Baoliang submitted by a distributed resource main body and a declaration time period according to the block chain technology-based virtual power plant hierarchical transaction framework, and completing a transaction process of the virtual power plant aggregation regulation and control layer and the virtual power plant external market layer.

2. The block chain-based layered virtual power plant credible transaction method of claim 1, wherein the block chain internal transaction chain is formed by transactions of a virtual power plant distributed resource layer and a virtual power plant aggregate regulation layer; the virtual power plant distributed resource layer and the virtual power plant aggregation regulation and control layer inquire and store information through a block chain;

the virtual power plant distributed resource layer comprises a distributed photovoltaic main body, a wind power generation main body, an electric automobile main body, a demand response main body and an energy storage main body;

the virtual power plant polymerization regulation and control layer is mainly controlled by a regulation and control center of a virtual power plant.

3. The block chain-based layered virtual power plant credible transaction method of claim 1, wherein the block chain external transaction chain is composed of transactions of a virtual power plant aggregate regulation layer and a virtual power plant external market layer;

and the virtual power plant polymerization regulation and control layer and the virtual power plant external market layer inquire and store information through a block chain.

4. The block chain-based layered virtual power plant credible transaction method of claim 1, wherein receiving transaction information registered by a distributed resource main body, completing a transaction flow of the virtual power plant distributed resource layer and the virtual power plant aggregate regulation layer comprises:

receiving transaction information registered by a distributed resource main body;

generating an auditing result according to the transaction information; generating a distributed resource subject passing the audit according to the audit result; the auditing result comprises the credibility of the distributed resource main body;

acquiring a price set value of the distributed resource main body which passes the examination, and publishing the price set value through an intelligent contract module on a block;

updating the credibility of the distributed resource main body, and storing the credibility on the block again; generating a settlement result; and finishing the transaction flow of the distributed resource layer of the virtual power plant and the aggregation regulation and control layer of the virtual power plant.

5. The block chain-based hierarchical virtual power plant trusted transaction method according to claim 4, wherein the credibility of the distributed resource subject is updated by the following formula:

in the above formula, the first and second carbon atoms are,

is as followstTime of transaction bodysThe degree of reputation;

is a main bodysFront sidet-a reputation total score of 1 transaction;

is a main bodysFirst, thetA reputation score for the secondary transaction;tis the number of transactions.

6. The block chain based hierarchical virtual plant trusted transaction method according to claim 4, wherein the settlement result is determined by the following formula:

in the above formula, the first and second carbon atoms are,

is a main bodysThe transaction result of (1);

a preset transaction price;

is a main bodysThe transaction amount of (a);

is a main bodysPenalty cost per unit deviation of (1).

7. The block chain-based layered virtual power plant credible transaction method of claim 1, wherein the steps of obtaining Shen Baoliang submitted by a distributed resource subject and a declaration time period, and completing a transaction flow between the virtual power plant aggregation regulation layer and the virtual power plant external market layer comprise:

acquiring the declaration amount and the declaration time period submitted by a distributed resource main body; obtaining the clearing price of each time period by adopting a marginal clearing method;

generating a settlement result of the virtual power plant according to the clearing price of each time interval; and finishing the transaction flow of the virtual power plant polymerization regulation and control layer and the virtual power plant external market layer.

8. The block chain-based hierarchical virtual power plant credible transaction method of claim 7, wherein the settlement result of the virtual power plant is calculated by the following formula:

in the above-mentioned formula, the compound has the following structure,

the result is the settlement result of the virtual power plant;

clearing price for each stage;

the actual clear volume is discharged;

to request the amount of the supernatant;

penalizes the cost for the unit output clearance deviation.

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