CN111144880B - Effective interaction method for energy terminal data in micro-grid system based on block chain - Google Patents
Effective interaction method for energy terminal data in micro-grid system based on block chain Download PDFInfo
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- CN111144880B CN111144880B CN201811312628.XA CN201811312628A CN111144880B CN 111144880 B CN111144880 B CN 111144880B CN 201811312628 A CN201811312628 A CN 201811312628A CN 111144880 B CN111144880 B CN 111144880B
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses an effective interaction method for energy terminal data in a micro-grid system based on a block chain, which is characterized by comprising the following steps of: each energy terminal in the micro-grid system performs data interaction based on a block endless chain; the block loop chain comprises a ring network formed by an originating block and a plurality of history blocks and new blocks which are initiated by each energy terminal to trade, wherein hash pointers are adopted among the originating block, the history blocks and the new blocks to direct and/or indirectly point; and the new block of the new transaction initiated by the energy terminal adopts an asynchronous communication consensus mechanism to carry out consensus confirmation in the block loop chain network. According to the invention, the blockchain technology is applied to the micro-grid, all data in the system are backed up by each energy terminal node, point-to-point data security interaction can be completed without a third-party trust mechanism, the data interaction record cannot be tampered, and the security and reliability of a data circulation environment are ensured.
Description
Technical Field
The invention relates to the technical field of computer data processing, in particular to an interaction method of energy terminal data in a micro-grid system.
Background
Along with the increasingly prominent energy crisis and environmental pollution problems, the research and development of green and clean renewable energy sources has become the energy development strategy and technical direction of China. The energy sources such as wind energy, photovoltaic and the like obstruct large-scale access and stable dispatching of electric power due to the characteristics of intermittent property, randomness and volatility.
The micro-grid is a novel distribution power system composed of a distributed power supply, a power electronic device and a load, is taken as a necessary network structure for distributed power generation, is a good solution for integrating the distributed power supply, and is currently becoming a research hotspot in the power industry. In a traditional micro-grid system, although the physical deployment is distributed, the data is still controlled by a central node, and the data is not highly encrypted in the interaction process, however, due to the various types of distributed power sources in the micro-grid, the complex communication environment, various running states, various output characteristics and different control methods, a plurality of potential safety hazards such as single-point fault risks and leakage of the data exist in the interaction process, for example, a micro-centralized service architecture is used for storing and forwarding all monitoring data and control signals through a central server, but due to the management defect of the central node or the attack of the central server, privacy data leakage and even network paralysis are possibly caused, and the centralized data management mode also increases the safety monitoring load of the central node. As devices are continuously added to the micro-grid, interaction between mass devices can generate data with huge structures and different standards, so that the safety communication challenge between the data is further increased, and efficient communication is hindered.
Therefore, a novel distributed technology is needed, and the whole micro-grid can be communicated with high expansion, high concurrency and high efficiency after being connected with a large number of intelligent terminals while ensuring that data are completely, consistently and effectively transmitted in advance, in the past and after the past.
Blockchain technology is considered to be the fifth subverted innovation of computing paradigms behind mainframes, personal computers, the internet, mobile social networks, and is self-evident by economics as a "trusted machine". The block chain is used as the underlying technology of the bit coin, which is characterized in that the data blocks are combined into a specific data structure in a chain manner according to the time sequence, and the uncompromised and uncompromised central sharing general ledger is ensured in a cryptographic manner, so that simple data which have a precedence relationship and can be verified in the system can be safely stored. The blockchain allows direct peer-to-peer interaction of devices within the microgrid, and the data is not managed by a central management mechanism, but is dispersed to each node server in a full back-up manner, and each participating entity exchanges information and energy in a peer-to-peer network.
However, in the traditional blockchain system, transaction data and codes received in a period of time are packaged into a data block with a time stamp, the block is linked to the current longest main blockchain after verification and is linear, all transactions need to be sequentially queued according to a time sequence to perform continuous workload evidence to calculate a block target hash value with a random number (Nonce) less than or equal to the block target hash value, the concurrent execution cannot be performed, and the transaction confirmation efficiency is low; meanwhile, miners with larger calculation power can choose to only pack transactions meeting the interests of the miners, and the risk of malicious attack exists.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the interaction method of the energy terminal data in the micro-grid system, the point-to-point data security interaction can be completed without a third-party trust mechanism, the data interaction record cannot be tampered, and the security and reliability of the data circulation environment are further improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
The method comprises the steps that data interaction is carried out on each energy terminal in a micro-grid system based on a block chain; the block loop chain comprises a ring network formed by an originating block and a plurality of history blocks and new blocks which are initiated by each energy terminal to trade, wherein hash pointers are adopted among the originating block, the history blocks and the new blocks to direct and/or indirectly point; and the new block of the new transaction initiated by the energy terminal adopts an asynchronous communication consensus mechanism to carry out consensus confirmation in the block loop chain network.
According to the effective interaction method of the energy terminal data in the micro-grid system based on the block chain, a main chain consisting of N authoritative nodes is arranged in the block ring chain, and all nodes with N less than or equal to 1/3 are arranged.
The effective interaction method of the energy terminal data in the micro-grid system based on the blockchain comprises the following specific steps of:
A. when a certain energy terminal node initiates a new transaction of data interaction, the node can find out the past continuous history father blocks with the higher weight values to verify;
B. c, performing operation of workload demonstration based on the calculation power of the node by utilizing the random values of the two past continuous history father blocks determined in the step A to obtain a random number and a weight value of the block corresponding to the node;
C. broadcasting the operation result of the step B to all nodes of the whole network;
D. the random number obtained by the node transaction operation is verified in the same way by the sub-blocks of the new transaction initiated by other nodes;
E. when the node is directly or indirectly verified by the sub-blocks of M new transactions, M is more than or equal to 5; the validity of the block is finalized; the authoritative nodes of the backbone at this time simultaneously add valid blocks to the backbone.
According to the energy terminal data effective interaction method in the block chain-based micro-grid system, the weight value of each block is directly related to the calculation power of the corresponding accounting node, and the higher the calculation power of the node is, the larger the weight value of the corresponding block is; the calculation force refers to the speed of the computer to calculate the output of the hash function.
By adopting the technical scheme, the invention has the following technical progress.
The invention solves the data interaction safety problem of the distributed energy terminals in the micro-grid by utilizing the characteristics of decentralization, transparency, non-tampering, traceability and the like of the blockchain, and ensures the safety, the robustness and the expandability of the whole system.
The invention adopts a block loop chain network structure, can distribute the data circulating in the micro-grid system on a plurality of node servers, and can finally synchronize and complete the backup of the data multi-nodes, when part of the nodes are attacked, the whole data is still highly effective and reliable, and the rest nodes maintain the stable operation of the system by virtue of the complete data. And the block chain system based on asynchronous communication consensus eliminates the safety risk existing in a central institution, and confirms the consistency of all data transaction processes through consensus, so that the data is effectively billed on the chain, and the safety of the data is ensured. The invention relies on the asymmetric encryption technology of the blockchain technology, all data are encrypted by the computer paradigm of the highly complex arithmetic logic, even if a hacker intercepts the data ciphertext, the plaintext cannot be deduced and decrypted in a single phase, and the high safety and the non-falsification of the data are ensured.
In the invention, the initiation of each data interaction between different energy terminals applies for in the form of transaction on the chain, whether the interaction is successful or not, the authenticity and the credibility depend on whether the transaction can be confirmed by the effective consensus of the whole network after being broadcasted, and the whole network node participates in the verification of the validity of the transaction without any transaction cost, which means that under the condition of rewarding, the nodes participate in the accounting with the same motivation and can autonomously and equally account for own transaction. In the consensus process, each node has the right to participate in accounting independently and in a peer-to-peer manner by means of self calculation, so that each transaction is ensured to be effectively recorded, and redundant malicious transactions are eliminated; the system overcomes the defect that the traditional blockchain system only has a small number of nodes such as miners (or the rights and interests owners of the PoS) in the whole network to verify the validity of the transaction.
Drawings
FIG. 1 is a schematic block chain architecture according to the present invention;
FIG. 2 is a flow chart of the block A identified by the asynchronous communication consensus mechanism in the present embodiment;
FIG. 3 is a schematic diagram of the effective block addition backbone in this embodiment.
Detailed Description
According to the invention, by combining the requirement of frequent data interaction in the distributed topology network structure of each intelligent terminal in the micro-grid, a block loop chain system is provided on the basis of a typical block chain system, a single-chain storage structure is changed into a multi-chain network topology structure, and high concurrency writing and parallel verification are allowed as shown in figure 1. Under the condition that the block packing time is unchanged, N blocks can be packed in parallel in the network, and the transaction in the network can be accommodated by N times. Meanwhile, an asynchronous communication consensus mechanism is adopted, each transaction does not need to be queued, the uplink is verified strictly according to time sequence, concurrent writing is allowed, a plurality of energy terminal nodes can simultaneously and commonly acknowledge the transaction according to different rhythms, account books of the nodes at the same moment are possibly not completely consistent, and finally the account books are synchronous.
The block loop chain system provided by the invention allows a plurality of energy terminal nodes to concurrently and commonly recognize own data interaction transaction, N blocks can be packaged in parallel in a network under the condition that the block packaging time is unchanged, each block is verified according to random values (Nonce) and Weight values (Weight) of two historical continuous blocks with higher weights in a father block of direct or indirect transaction, and the same principle is applied to the sub-blocks of the block loop chain system to verify, and the more the number of times of verification, the more effective the block is. When validated, either directly or indirectly, by a plurality of sub-blocks, the block consensus is ultimately determined to be valid and added to the backbone by the authoritative node. The pre-selected authoritative nodes mainly record effective transactions on a main chain and full-network malicious transaction supervision.
The asynchronous communication consensus mechanism ensures that each node of the whole network participates in data transaction and package out, enhances the high expansibility and high capacity of data interaction of the whole micro-grid system, improves the efficiency of data interaction among all intelligent terminals under the condition of ensuring that data are consistently completed, and finally improves the running speed of the whole system.
The invention will be described in further detail with reference to the drawings and the specific embodiments.
Each energy terminal in the micro-grid system performs data interaction based on the block endless chain. The block loop chain comprises a ring network formed by an originating block and a plurality of historical blocks and new blocks which are initiated by each energy terminal to trade, and as shown in figure 1, hash pointers are adopted among the originating block, the historical blocks and the new blocks to direct and/or indirectly direct; and the new block of the new transaction initiated by the energy terminal adopts an asynchronous communication consensus mechanism to carry out consensus confirmation in the block loop chain network. The block ring chain is provided with a main chain consisting of N authoritative nodes, all nodes with N less than or equal to 1/3 are arranged in the block ring chain, the authoritative nodes are used as witness persons, the block ring chain is obtained in a mode of realizing selection, and the block ring chain is responsible for confirmation of transaction effectiveness on the main chain and full-network transaction checking.
The traditional asynchronous communication consensus mechanism can possibly cause double-flower attack, namely, an attacker adds two conflicting transactions at two different positions and verifies the transactions continuously forwards on a chain, and finally, hard bifurcation can be caused.
A. When a certain energy terminal node A initiates a new transaction of data interaction, the node can find the past continuous history father blocks with higher weight values to verify. For example, in fig. 2, the node a may find B, C, D, F the B block with the highest weight value and the direct parent block E block with the highest weight value of the B blocks among the four parent blocks with direct relation to a for verification.
The weight value of each block in the invention is directly related to the calculation power of the corresponding billing node, namely the calculation speed of the Computer (CPU) for calculating the output speed of the hash function, and the higher the calculation power of the node is, the larger the weight value of the corresponding block is.
B. And C, performing operation of workload demonstration based on the calculation power of the node by utilizing the random values of the two past continuous history father blocks determined in the step A, and obtaining a random number (Nonce (A)) and a weight value (W (A)) of the block corresponding to the node. Continuing the example above, the random values (nonces) of the two parent blocks of B, E are utilized to perform a proof of work (PoW) operation based on the power of calculation on node a itself.
C. And B, broadcasting the operation result random number (Nonce (A)) and the weight value (W (A)) to all nodes of the whole network.
D. The random number (Nonce (a)) obtained by the node transaction operation is verified in the same manner by the sub-blocks of the new transaction initiated by the other nodes. In this embodiment, the random number (Nonce (a)) of the operation result of the node a transaction is verified in the same manner by the sub-block G of the new transaction initiated by the other node, as shown in fig. 2; the greater the number of times validated by other nodes, the higher the effective probability of block a corresponding to the node a initiating the transaction.
E. When the node is directly or indirectly verified by the sub-blocks of M new transactions, M is more than or equal to 5; the validity of the block is finalized; the authoritative nodes of the backbone at this time simultaneously add valid blocks to the backbone.
In this embodiment, when the block a is directly or indirectly verified by the sub-blocks of 6 new transactions, the validity of the block a is finally determined, and the authority node of the main chain adds the valid block to the main chain at the same time, as shown in fig. 3.
The invention adopts the transaction with high weight value to verify, thereby being beneficial to increasing the possibility that own transaction is verified by the subsequent transaction. If the node binds the illegal transaction, the later transaction will not select the transaction to verify, and once the transaction is long, the transaction is discarded by the network, is not part of the network, and further eliminates some illegal malicious transactions. In addition, the invention provides that each block is sequentially arranged according to the size of the weight value for verification, so that consistency is obtained, and a user can know which is the originating block, which is connected after the last block, which block transaction is processed preferentially, and the like, so that the occurrence of double-flower events is reduced, and the consistency of the trace back and the data is kept.
According to the invention, the blockchain technology is applied to the micro-grid, all data in the system are backed up by each energy terminal node, point-to-point data security interaction can be completed without a third-party trust mechanism, the data interaction record cannot be tampered, and the security and reliability of a data circulation environment are ensured.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The effective interaction method of the energy terminal data in the micro-grid system based on the block chain is characterized by comprising the following steps: each energy terminal in the micro-grid system performs data interaction based on a block endless chain; the block loop chain comprises a ring network formed by an originating block and a plurality of history blocks and new blocks which are initiated by each energy terminal to trade, wherein hash pointers are adopted among the originating block, the history blocks and the new blocks to direct and/or indirectly point; the energy terminal initiates a new block of a new transaction to carry out consensus confirmation in the block loop chain network by adopting an asynchronous communication consensus mechanism;
the specific method of the asynchronous communication consensus mechanism comprises the following steps:
A. when a certain energy terminal node initiates a new transaction of data interaction, the node can find out the past continuous history father blocks with the higher weight values to verify;
B. c, performing operation of workload demonstration based on the calculation power of the node by utilizing the random values of the two past continuous history father blocks determined in the step A to obtain a random number and a weight value of the block corresponding to the node;
C. broadcasting the operation result of the step B to all nodes of the whole network;
D. the random number obtained by the node transaction operation is verified in the same way by the sub-blocks of the new transaction initiated by other nodes at the same time;
E. when the node is directly or indirectly verified by the sub-blocks of M new transactions, M is more than or equal to 5; the validity of the block is finalized; the authoritative nodes of the backbone at this time simultaneously add valid blocks to the backbone.
2. The efficient interaction method for energy terminal data in a blockchain-based micro-grid system according to claim 1, wherein the method comprises the following steps: the block ring chain is provided with a main chain composed of N authoritative nodes, and all nodes with N less than or equal to 1/3 are arranged in the block ring chain.
3. The efficient interaction method of energy terminal data in a blockchain-based micro grid system according to claim 1, wherein the weight value of each block is directly related to the calculation power of its corresponding accounting node, the higher the calculation power of the node is, the greater the weight value of its corresponding block is; the calculation force refers to the speed of the computer to calculate the output of the hash function.
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