CN115829744A - Microgrid transaction method, storage medium, equipment and system based on block chain - Google Patents
Microgrid transaction method, storage medium, equipment and system based on block chain Download PDFInfo
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Abstract
The invention relates to a block chain-based microgrid transaction method, a storage medium, equipment and a system, which belong to the technical field of block chains and microgrids and comprise the following steps: s1, auditing the power generation qualification and the network access qualification of a user; s2, issuing and auditing transaction information; s3, quantifying risk and trust; s4, matching transaction objects; and S5, executing the transaction. The invention integrates the admission mechanism, behavior analysis, trust evaluation, user trust and system risk quantification of PKI and intelligent contract technologies, realizes multilevel security protection, constructs a security protection system from user admission to transaction completion in a full life cycle, provides a safe microgrid transaction environment and ensures the reliable operation of the microgrid transaction system.
Description
Technical Field
The invention belongs to the technical field of block chains and micro-grids, and particularly relates to a micro-grid transaction method, a storage medium, equipment and a system based on the block chains.
Background
At present, with continuous expansion of power scale and gradual opening of a power market, the operation stability and safety of a power grid tend to decline, a receiving-end power grid depends heavily on external power and is difficult to meet power supply requirements of diversified users, and the problem of new energy consumption and utilization is increasingly serious due to development of new energy. In view of this, environmental protection, high efficiency, nimble collection send out, join in marriage, sell the little grid system of electricity as an organic whole and come into play. The development of the micro-grid is helpful to solve the problem of new energy consumption, and the characteristic of the micro-grid deployed at the receiving end makes the micro-grid easy to meet the diversified requirements of receiving end users. The block chain is honored as 'the next generation internet', and is a decentralized, low-cost and information-tamper-resistant distributed accounting system, and the block chain is combined with a distributed micro-grid system to form a research trend. With the development of the block chain technology and the increasing application range, the value of the block chain bearer is increasing.
The block chain and each field are more frequently crossed and fused, the application pace is continuously accelerated, and the block chain and each field are being explored and applied in industries such as trade finance, supply chain, social public service, election, judicial evidence storage, tax affairs, logistics, medical health, agriculture, energy and the like. Particularly, the micro-grid participates in the opening of the multi-element and network of the main body, and the security problem of data credibility intercommunication is remarkably increased. The credibility of the power data influences the safe popularization of the micro-grid, and how to ensure the credible sharing of the power information and the reliable transaction of the power resource and maximize the benefits of both the user and the system to the maximum extent. The problem to be solved urgently is that the false power information uploaded by the user can seriously influence the power scheduling of the system and reduce the overall benefit of the system.
Because the network has the characteristics of openness, anonymity and the like, the threshold of the illegal user for counterfeiting the identity of other people to carry out online fraud by some technical means is lower and lower, so that great harm is caused to the legal user and the system. The essence of identity authentication is the process of verifying whether an authenticated object is authentic and valid, and is considered to be the basis of online transactions today. In a Public Key Infrastructure (PKI) system, a Certificate Authority (CA) handles an online identity certificate, i.e., an identity card, for each legitimate user in the system. The PKI has a wide application range, and provides a complete security service function for data exchange in networks such as online finance, online banking, online securities, electronic commerce and electronic government affairs. The PKI, as a security infrastructure, can provide six security services of identity authentication, data integrity, data confidentiality, data fairness, non-repudiation and time stamping.
Therefore, aiming at the existing problems, it is urgently needed to provide a multi-layer protection transaction method which can realize high safety and high reliability, and it is very important to meet the requirements of high benefit and low cost, match a model efficiently, maximize benefit, and meet the requirements of users for personalized electricity utilization.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a block chain-based microgrid transaction method, a storage medium, equipment and a system, integrates an admission mechanism, behavior analysis, trust evaluation, user trust and system risk quantification of a PKI (public key infrastructure) and an intelligent contract technology, realizes multi-level security protection, constructs a security protection system from user admission to transaction completion in a full life cycle, provides a secure microgrid transaction environment, and ensures the reliable operation of a microgrid transaction system.
The purpose of the invention can be realized by the following technical scheme:
according to a first aspect of the present application, an embodiment of the present application provides a block chain-based microgrid transaction method, which is applied to a computer device, and includes the following steps:
s1, auditing the power generation qualification and the network access qualification of a user: the user interacts with the PKI system, the PKI system verifies the user information, a certificate is issued after the verification is passed, the user initiates a network access request and is processed by an admission contract, and a user trust value is initialized and the user information is written into an information chain after the access request is passed;
s2, transaction information issuing and auditing: detecting the current trust value of the user and the information issued by the auditing user, scoring the user according to the scoring index, wherein the meeting of the scoring index is that the auditing is passed, and writing the information issued by the user into an information chain;
s3, risk and trust quantification: analyzing the income and risk possibly brought to the system by the information issued by the user, quantifying the system risk and the user trust and calculating the final benefit value;
s4, matching transaction objects: under the auction decision condition based on the benefit value, sorting according to the benefit value, and preferentially matching;
s5, transaction execution: and generating a contract according to the matching result, supervising and executing the contract, and updating the trust value according to the contract feedback and the grade of the user for the transaction.
Further, in step S2, the scoring indicators include the following five indicators a to e, where the scoring amplitude is defined as the degree of violation of the indicator, and specifically:
a. the absolute value of the difference value between the user load and the user power does not exceed 50% of the maximum value, specifically:
|L i -P i |≤max(|L i -P i |)*0.05
grading amplitude: l i -P i |/sum(L i +P i )
Wherein i ∈ [1, n ]]Is identified for the user, L i For user load, P i Power is provided for the user;
b. the method is characterized in that the user load and the user power do not exceed the upper limit power scale, and specifically comprises the following steps:
L i ≤S s ,P i ≤S s
grading amplitude:
wherein S is s The upper limit of the power scale is customized according to the power generation quality;
c. the user trust value is not lower than the minimum threshold requirement, specifically:
D i ≥d
grading amplitude:
wherein D is i Is a user trust value, d is a trust threshold;
d. the user timestamp does not exceed 2h in the future of the current time, specifically:
(T i -CT)≤2h
grading amplitude:
wherein, T i A user timestamp, CT is the current time;
e. the device ID field is consistent with the ID field stored in the system, and specifically includes:
where μ is a scheduling result influence factor, DI i For user equipment ID, LI i For user equipment ID, C, stored on the chain i Rating the user's behavior, R i Analyzing the result for the user behavior;
and performing trust evaluation according to the trust value of the user by adopting the following formula:
α∈[0,1],α>1-α
wherein S is i Is a comprehensive trust value, TD, of the user i Is the user transaction score confidence value and alpha is a weighting factor.
Further, in step S3, the quantization process adopts a benefit theory, in which a benefit function ξ is adopted i Comprises the following steps:
wherein i ∈ [1, n ]]For user identification, G i For the benefit, O i To lose, ε is the risk attitude of the system, the final benefit value E i The calculation formula is as follows:
wherein D is i For a user trust value, P i For consumer power, C i The behavior of the user is scored.
Further, in step S4, the auction decision is based on the loss of the electric power in the transmission process, the information issued by the user is grouped according to time and region, and then filtered according to the price threshold of the buyer, so as to remove the information whose price does not meet the requirement.
Further, in step S5, the updated trust value TD i Comprises the following steps:
wherein D is i As a user trust value, I i Is the user's trust score for the transaction, D ave Is all trust in the system over a period of timeAverage value of scores and
where n is the number of transactions over a period of time.
According to a second aspect of the present application, an embodiment of the present application provides a storage medium, in which a computer program is stored, and when the computer program runs on a computer, the computer is caused to execute the above-mentioned microgrid trading method.
According to a third aspect of the present application, an embodiment of the present application provides a computer device, including a general-purpose memory and a processor, where the memory is electrically connected to the processor, the memory stores a computer program therein, and the processor is configured to execute the above-mentioned microgrid trading method by calling the computer program stored in the memory.
According to a fourth aspect of the present application, an embodiment of the present application provides a block chain-based microgrid transaction system, which is applied to a computer device, and includes an admission module, an audit module, a trust evaluation auction module, and a transaction evaluation and trust update module;
the access module integrates a PKI technology and an intelligent contract technology, and is used for safety audit of a user access link, preventing illegal users from being added into a microgrid block chain and endowing the microgrid block chain with an initial trust value;
the auditing module is used for evaluating the information endowed with the initial trust value, including behavior analysis scoring and trust evaluation, and only the user who passes the evaluation is allowed to issue the demand information;
the trust evaluation auction module is used for analyzing the income and risk brought to the system by the demand information issued by the user, realizing the quantification of the benefit value, and matching the buyer and the seller by taking the benefit value as a parameter in the auction decision;
and the transaction evaluation and trust updating module is used for generating transaction contracts for matched buyers and sellers, supervising and executing the transaction contracts, and updating the trust value according to contract feedback and user scores after the transaction is finished.
The invention has the beneficial effects that:
the invention integrates the technologies of an admission mechanism, behavior analysis, trust evaluation, auction decision based on benefit theory and the like based on PKI and intelligent contracts, constructs a multi-level safety protection system, realizes safety guarantee of a whole life cycle from user admission to transaction completion, provides a safe microgrid transaction environment, guarantees reliable operation of a microgrid transaction system, increases the doing and doing cost of doing and doing malicious users, reduces illegal transactions generated by the doing and malicious users, and improves the safety and the efficiency of the system.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram illustrating the steps of a microgrid trading method according to the present invention;
FIG. 2 is a flowchart illustrating a process for checking uplink of a user access network;
FIG. 3 is a flow chart of the operation of the microgrid trading method of the present invention;
FIG. 4 is a flow diagram of a benefit value based auction decision process according to the present invention;
FIG. 5 is a block chain-based microgrid transaction system architecture according to the present invention;
fig. 6 is a diagram of the theoretical structure of the benefit used in the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-6, an embodiment of the present application provides a block chain-based microgrid transaction method applied to a computer device, including the following steps:
s1, auditing the power generation qualification and the network access qualification of a user: the user interacts with the PKI system, the PKI system verifies the user information, a certificate is issued after the verification is passed, the user initiates a network access request and is processed by an admission contract, and a user trust value is initialized and the user information is written into an information chain after the access request is passed;
s2, transaction information issuing and auditing: detecting the current trust value of the user and the information issued by the auditing user, scoring the user according to the scoring index, wherein the meeting of the scoring index is that the auditing is passed, and writing the information issued by the user into an information chain;
s3, risk and trust quantification: analyzing the income and risk possibly brought to the system by the information issued by the user, quantifying the system risk and the user trust and calculating the final benefit value;
s4, matching transaction objects: under the auction decision condition based on the benefit value, sorting according to the benefit value, and preferentially matching;
s5, transaction execution: and generating a contract according to the matching result, supervising and executing the contract, and updating the trust value according to the contract feedback and the grade of the user for the transaction.
Further, in step S2, the scoring indexes include the following five indexes a to e, where the scoring amplitude is defined as a degree of violation of the indexes, specifically:
a. the absolute value of the difference value between the user load and the user power does not exceed 50% of the maximum value, specifically:
|L i -P i |≤max(|L i -P i |)*0.05
grading amplitude: l i -P i |/sum(L i +P i )
Wherein i ∈ [1, n ]]Is identified for the user, L i For user load, P i Power is provided for the user;
b. the method is characterized in that the user load and the user power do not exceed the upper limit power scale, and specifically comprises the following steps:
L i ≤S s ,P i ≤S s
grading amplitude:
wherein S is s The upper limit of the power scale is customized according to the power generation quality;
c. the user trust value is not lower than the minimum threshold requirement, specifically:
D i ≥d
grading amplitude:
wherein D is i Is a user trust value, d is a trust threshold;
d. the user timestamp does not exceed 2h in the future of the current time, specifically:
(T i -CT)≤2h
grading amplitude:
wherein, T i A user timestamp, CT is the current time;
e. the device ID field is consistent with the ID field stored in the system, and specifically includes:
where μ is a scheduling result influence factor, DI i For user equipment ID, LI i For user equipment ID, C, stored on the chain i Rating the user's behavior, R i Analyzing the result for the user behavior;
and performing trust evaluation according to the trust value of the user by adopting the following formula:
α∈[0,1],α>1-α
wherein S is i Is a comprehensive trust value of the user, TD i Is a user transaction score confidence value, alpha is a weighting factor, tongAnd through the user behavior analysis result and the trust evaluation result, malicious false information is timely perceived, and the user behavior is permanently bound with the user behavior.
Further, in step S3, the quantization process adopts a benefit theory, in which a benefit function ξ is adopted i Comprises the following steps:
wherein i ∈ [1, n ]]For user identification, G i For the benefit, O i To lose, ε is the risk attitude of the system, the final benefit value E i The calculation formula is as follows:
wherein D is i For a user trust value, P i For consumer power, C i The behavior of the user is scored.
Further, in step S4, the auction decision is based on the loss of the electric power in the transmission process, the information issued by the user is grouped according to time and regions, then filtered according to the price threshold of the buyer, the information with the price not meeting the requirement is removed, then the system sorts according to the benefit value, the higher the ranking is, the lower the risk brought to the system by the information is, and the preferential matching is performed.
In this embodiment, the specific operation flow of the auction decision is as follows: the system generates different graphs according to different regions where the users are located. Firstly, grouping information issued by a user and auction participants according to position information in a graph, then comparing the information and the auction participants according to the graph, and traversing each information issuing point and each auction participant point in a breadth mode to find out a set of points closest to the point. And grouping again according to the issued information and the auction time of the auctioneers. And according to the price threshold value of the user, removing the information that the price in the group does not meet the requirement, and sorting according to the price to obtain a price sorting queue. And (4) accounting the benefit values, and sequencing the accounted benefit values according to the groups to obtain a benefit value sequencing queue. The system comprehensively considers and matches according to the benefit value sorting queue and the price sorting queue, the matching rule is a preferred matching rule with a small mean value according to sorting information in the two sorting queues, when a plurality of results are the same, the matching rule is carried out according to the priority of the benefit value, if the matching is successful, an intelligent contract is generated according to the information, otherwise, the information needs to be released again to participate in the auction.
Further, in step S5, the updated trust value TD i Comprises the following steps:
wherein D is i As a user trust value, I i Is the user's trust score for the transaction, D ave Is the average of all trust scores in the system over a period of time and
where n is the number of transactions over a period of time.
In this embodiment, before a user accesses a network, the user interacts with a PKI system to acquire a certificate and write information into an information chain, and the specific steps are as follows:
the user requesting the entry prepares application material: submitting application materials to RA for power generation qualification and networking qualification, auditing the qualification by RA, and issuing certificates after the audit is passed;
the user submits the certificate and the network access application to the CA, the CA verifies the user certificate, after the verification is passed, the CA approves the access chain, and the access contract processes the access chain, the access contract can verify the legality of the access certificate, and after the access is passed, the initialized trust value of the network access user is firstly passed.
The embodiment of the present application further provides a storage medium, where a computer program is stored, and when the computer program runs on a computer, the computer is caused to execute the above-mentioned microgrid transaction method.
The embodiment of the application further provides computer equipment, which comprises a general memory and a processor, wherein the memory is electrically connected with the processor, the memory stores a computer program, and the processor is used for executing the microgrid transaction method by calling the computer program stored in the memory.
The embodiment of the application also provides a block chain-based micro-grid transaction system which is applied to computer equipment and comprises an admission module, an auditing module, a trust evaluation auction module and a transaction evaluation and trust updating module;
the access module integrates a PKI technology and an intelligent contract technology and is used for safety audit of a user access link, so that an illegal user is prevented from being added into a microgrid block chain and is endowed with an initial trust value;
the auditing module is used for evaluating the information endowed with the initial trust value, including behavior analysis scoring and trust evaluation, and only the user who passes the evaluation is allowed to issue the demand information;
the trust evaluation auction module is used for analyzing the income and risk brought to the system by the demand information issued by the user, realizing the quantification of the benefit value, and matching the buyer and the seller by taking the benefit value as a parameter in the auction decision;
and the transaction evaluation and trust updating module is used for generating transaction contracts for matched buyers and sellers, supervising and executing the transaction contracts, and updating the trust value according to contract feedback and user scores after the transaction is finished.
In the embodiment, when a user applies for joining the microgrid system, power generation qualification and networking qualification need to be submitted, a certificate is issued to the user passing the audit based on PKI and an intelligent contract, the certificate is written into an information chain, and an initial trust value is given; when the user issues the demand information, the behavior of the user is audited and analyzed, the user is scored according to the analysis index, and the malicious user is prevented from issuing false information and uploading the false information to the chain; carrying out quantitative analysis on system risk and user trust to realize benefit value quantification, carrying out auction decision by referring to the benefit value, matching two parties, generating a trading contract according to a transaction, and supervising contract execution; and analyzing and evaluating the result, writing the transaction data into a block, achieving consensus by a consensus node, and adding the block to a transaction chain.
The benefit theory used by the invention is as follows: and under the risk state, the system evaluates the forward value of each user in the chain and selects the user with high forward value to make auction decision, thereby maximizing the benefit.
The invention audits the power generation qualification and the network access qualification of the user in the network access link of the user, realizes the qualification audit of the user by PKI and intelligent contracts, issues a certificate only after the certification is passed, adds the user information into an information chain and initializes a trust value for a new user, and ensures the safety of the access link of the system. In the information issuing link, the system checks the trust value of the user and audits the behavior, thereby avoiding the influence of the risk information on the system safety. Based on the benefit theory, the system further audits the transaction information, quantifies the system risk and the user trust, and achieves the quantification of the benefit value. The information issued by the user is grouped according to time and regions, the inconsistent information is filtered according to the price threshold value, and finally the information is sorted according to the benefit value and preferentially matched, so that the factors such as time, regions and price are considered, the system risk and the user trust are considered, and the safety guarantee in transaction is improved. And generating a contract according to the matching result, supervising contract execution, and updating the user trust value through the results of contract feedback and user transaction feedback so as to be used in the next transaction.
The invention is a decentralized transaction, realizes the transaction between users, stores the transaction information into the information chain, realizes the transparency and the non-tampering property of the transaction information, introduces the benefit theory in the auction decision process, and realizes the maximization of the benefits of both users and systems in the microgrid. The behavior evaluation, the trust evaluation and the risk attitude of the system of the user are quantified, the incidence rate of malicious users is reduced, and the normal and safe operation of the system is guaranteed.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A microgrid transaction method based on a block chain is characterized in that: the method comprises the following steps:
s1, auditing the power generation qualification and the network access qualification of a user: the user interacts with the PKI system, the PKI system verifies the user information, a certificate is issued after the verification is passed, the user initiates a network access request and is processed by an admission contract, and a user trust value is initialized and the user information is written into an information chain after the access request is passed;
s2, transaction information issuing and auditing: detecting the current trust value of the user and the information issued by the auditing user, scoring the user according to the scoring index, wherein the meeting of the scoring index is that the auditing is passed, and writing the information issued by the user into an information chain;
s3, risk and trust quantification: analyzing the income and risk possibly brought to the system by the information issued by the user, quantifying the system risk and the user trust and calculating the final benefit value;
s4, matching transaction objects: under the auction decision condition based on the benefit value, sorting according to the benefit value, and preferentially matching;
s5, transaction execution: and generating a contract according to the matching result, supervising and executing the contract, and updating the trust value according to the contract feedback and the grade of the user for the transaction.
2. The block chain-based microgrid transaction method of claim 1, characterized in that: in step S2, the scoring indexes include the following five indexes a to e, where the scoring amplitude is defined as the degree of violation of the indexes, specifically:
a. the absolute value of the difference value between the user load and the user power does not exceed 50% of the maximum value, specifically:
|L i -P i |≤max(|L i -P i |)*0.05
grading amplitude: l i -P i |/sum(L i +P i )
Wherein i ∈ [1, n ]]Is identified for the user, L i For the user load, P i Power is provided for the user;
b. the method is characterized in that the user load and the user power do not exceed the upper limit power scale, and specifically comprises the following steps:
L i ≤S s ,P i ≤S s
grading amplitude:
wherein S is s The upper limit of the power scale is customized according to the power generation qualification;
c. the user trust value is not lower than the minimum threshold requirement, specifically:
D i ≥d
grading amplitude:
wherein D is i Is a user trust value, d is a trust threshold;
d. the user timestamp does not exceed 2h in the future of the current time, specifically:
(T i -CT)≤2h
grading amplitude:
wherein, T i A user timestamp, CT is the current time;
e. the device ID field is consistent with the ID field stored in the system, and specifically includes:
where μ is a scheduling result influence factor, DI i For user equipment ID, LI i For user equipment ID, C, stored on the chain i Rating the user's behavior, R i Analyzing the result for the user behavior;
and performing trust evaluation according to the trust value of the user by adopting the following formula:
α∈[0,1],α>1-α
wherein S is i Is a comprehensive trust value, TD, of the user i Is the user transaction score confidence value and alpha is a weighting factor.
3. The block chain-based microgrid transaction method of claim 1, characterized in that: in step S3, the quantization process adopts a benefit theory, and a benefit function xi in the benefit theory i Comprises the following steps:
wherein i ∈ [1, n ]]For user identification, G i For the benefit, O i To lose, ε is the risk attitude of the system, the final benefit value E i The calculation formula is as follows:
wherein D is i For a user trust value, P i For consumer power, C i The behavior of the user is scored.
4. The block chain-based microgrid transaction method of claim 1, characterized in that: in step S4, the auction decision is based on the loss of the electric power in the transmission process, the information issued by the user is grouped according to time and regions, and then the filtering is carried out according to the price threshold value of the buyer, so that the information with the price not meeting the requirement is removed.
5. The block chain-based microgrid transaction method of claim 1, characterized in that: in step S5, the updated trust value TD i Comprises the following steps:
wherein D is i As a user trust value, I i Is the user's trust score for the transaction, D ave Is the average of all trust scores in the system over a period of time and
where n is the number of transactions over a period of time.
6. A storage medium, characterized by: the storage medium has stored therein a computer program which, when run on a computer, causes the computer to execute the microgrid transaction method according to any one of claims 1 to 5.
7. A computer device, characterized by: comprising a general-purpose memory and a processor, the memory being electrically connected to the processor, the memory having stored therein a computer program, the processor being adapted to execute the microgrid transaction method according to any one of claims 1 to 5 by calling the computer program stored in the memory.
8. The utility model provides a little electric wire netting transaction system based on block chain, is applied to computer equipment which characterized in that: the system comprises an admission module, an auditing module, a trust evaluation auction module and a transaction evaluation and trust updating module;
the access module integrates a PKI technology and an intelligent contract technology and is used for safety audit of a user access link, so that an illegal user is prevented from being added into a microgrid block chain and is endowed with an initial trust value;
the auditing module is used for evaluating the information endowed with the initial trust value, including behavior analysis scoring and trust evaluation, and only the user who passes the evaluation is allowed to issue the demand information;
the trust evaluation auction module is used for analyzing the income and risk brought to the system by the demand information issued by the user, realizing the quantification of the benefit value, and matching the buyer and the seller by taking the benefit value as a parameter in the auction decision;
and the transaction evaluation and trust updating module is used for generating transaction contracts for matched buyers and sellers, supervising and executing the transaction contracts, and updating the trust value according to contract feedback and user scores after the transaction is finished.
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| CN116934344A (en) * | 2023-09-18 | 2023-10-24 | 广东工业大学 | Micro-grid transaction method and system based on blockchain |
| CN116934344B (en) * | 2023-09-18 | 2024-01-05 | 广东工业大学 | Micro-grid transaction method and system based on blockchain |
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