CN113780984B - Block chain-based power distribution website interaction system and interaction method - Google Patents
Block chain-based power distribution website interaction system and interaction method Download PDFInfo
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Abstract
The invention discloses a block chain-based power distribution website interaction system and an interaction method, wherein the interaction system comprises a request receiving module for receiving a data link-in request issued to a block chain network, an identity tag authentication module for authenticating an identity tag of a requester, a request checking module for judging whether the data link-in request is valid or not, and an execution module; the request checking module issues an authorization result to the blockchain network, and the execution module decides whether to write data into the blockchain according to the authorization result. By adopting an identity authentication and data encryption mechanism of the public unit and the interval unit and by means of a distributed storage technology of a block chain technology and an intelligent contract mechanism and combining a power system physical model design consensus method, the information security protection requirement of side interaction of a power distribution website can be met.
Description
Technical Field
The invention relates to interaction of power distribution websites, in particular to a system and a method for interaction of power distribution websites based on block chains.
Background
At present, a plurality of distribution stations are all arranged for project transformation of a distribution terminal of a distributed substation, and the original old district distribution station and a distribution network are transformed and additionally provided with the distributed substation terminal. Compared with a common centralized station terminal, the distributed station terminal adopts a miniaturized distributed station terminal, so that the installation space is greatly saved; the three remote monitoring units are used for replacing the original panel fault indicator lamps; old distribution network is changed into an intelligent distribution network with three remote transmission in the automatic transformation process, so that the intelligent transformation and upgrading of the old distribution network are realized, and the problems of large installation volume, complex wiring and long power failure time are solved. The current power distribution network-oriented solution is to intelligently fuse the primary and secondary power distribution networks, equipment is assembled before leaving the factory, and only debugging is needed on site. The advantages are as follows:
(1) The method is suitable for being adopted by newly-built switching stations, power distribution rooms and outdoor power distribution boxes, and is flexible to deploy and easy to expand.
(2) One-step construction, remote signaling, remote measurement and remote control are carried out, the whole is attractive, and the current automation trend is met.
(3) The distribution network automation function does not need on-site construction wiring, and meanwhile, a large number of cables are replaced by communication network cables, so that the cost is saved.
(4) Greatly reduces the construction power failure time.
However, in the use of terminals at a decentralized station, problems in terms of application also occur:
(1) The communication between the public unit of the station terminal and the distribution terminal interval unit lacks information safety protection, and the risks of data tampering and counterfeiting of remote control command opening and closing exist.
(2) The interval units have independent fixed values, logs, fault wave recording and historical data, and the data lack fault tolerance mechanisms when the public units are integrated, so that the situation that the public units and the interval units are not synchronized in time to cause error leakage exists.
(3) All data of the stations are collected by the common unit, and if the common unit is abnormal, all interval data of the stations are lost during the abnormal period.
Disclosure of Invention
The invention aims to: aiming at the defects, the invention provides a block chain-based power distribution website interaction system which realizes information security protection between a public unit and interval units, does not depend on decentralized management of the public unit and coordination and autonomy of each interval unit.
The invention also provides a block chain-based interaction method of the power distribution website.
The technical scheme is as follows: in order to solve the problems, the invention adopts a block chain-based interaction system of a power distribution website, which comprises
The request receiving module is used for receiving a data link-in request issued to the blockchain network;
the identity tag authentication module is used for authenticating the received identity tag of the requester corresponding to the data link-in request and issuing an authentication result to the blockchain network;
the request verification module is used for verifying the data link-in request, judging that the data link-in request is valid when the identity tag of the requester passes authentication and the data of the request link-in accords with the link-in piece, authorizing the valid data link-in request and issuing an authorization result to the block chain network;
and the execution module is used for writing data into the blockchain according to the authorization result.
Further, the system also comprises a request sending module for issuing a data in-link request to the blockchain network, wherein the data in-link request comprises an identity tag and a data description of the requester.
Further, the data link-in request comprises a switch state information link-in request of a plurality of interval units, the interval units are end equipment deployed for each interval cabinet of the power distribution station, and after the link-in of the switch state information is completed, switching-on operation is performed on the interval unit switches;
the request receiving module is used for receiving a remote control authorization request formed by a remote control initiating unit released to a blockchain network based on the on-off state information of a remote control target unit in the blockchain, wherein the remote control target unit is a spacing unit, the remote control initiating unit is a spacing unit or a public unit, and the public unit is an edge computing device of a power distribution station;
the identity tag authentication module is used for authenticating identity tags of the remote control initiating unit and the remote control target unit and issuing an authentication result to the blockchain network;
the request verification module is used for verifying the remote control authorization request, judging that the remote control authorization request is valid when the identity tags of the remote control initiating unit and the remote control target unit pass the authentication and the remote control target unit accords with the remote control condition, authorizing the valid remote control authorization request and issuing an authorization result to the blockchain network;
the execution module is used for executing the remote control operation of the switch on the remote control target unit according to the authorization result and updating the switch state information of the remote control target unit to the blockchain network.
Further, the remote control authorization request comprises an identity tag of a remote control initiating unit, an identity tag of a remote control target unit, on-off state information of the remote control target unit and remote control description information.
Further, the public unit integrated encryption chip comprises an identity certificate of the public unit, the identity tag authentication module receives the identity certificate sent by the public unit and sends the identity certificate to the interval unit, the interval unit verifies the digital signature of the public unit according to the identity certificate, and if the interval unit verification exceeding the threshold number is successful, the identity of the public unit is approved.
Further, the identity tag authentication module receives the three-phase current phase angle with the current time stamp sent by the interval unit and sends the three-phase current phase angle to other interval units, the other interval units authenticate the three-phase current phase angle at the time of the time stamp, and if the other interval units exceeding the threshold value judge that the phase is synchronous with the wide area of the other interval units, the identity of the interval units is approved.
Furthermore, all the interval units issue data to the blockchain network as required, and the common unit and each interval unit analyze and integrate all the data according to specific time marks and types.
The invention also adopts a block chain-based interaction method of the power distribution website, which comprises the following steps:
(1) Receiving a data link-in request issued to a blockchain network;
(2) Authenticating the received identity tag of the requester corresponding to the data link-in request, and issuing an authentication result to a blockchain network;
(3) Checking the data link-in request, judging that the data link-in request is effective when the identity tag of the requester passes authentication and the data of the request link-in accords with the link-in piece, authorizing the effective data link-in request and issuing an authorization result to a blockchain network;
(4) And writing the data into the block chain according to the authorization result.
The beneficial effects are that: compared with the prior art, the invention has the remarkable advantages that the identity authentication and data encryption mechanism of the public unit and the interval unit is adopted, and the information security protection requirement of side interaction can be met by combining a common identification method with the design of a physical model of a power system by means of a distributed storage technology and an intelligent contract mechanism of a block chain technology. The data format with the time stamp and the chain structure realize the retrospective query and tamper resistance of the data. The encryption mechanism, the verification mechanism and the consensus mechanism in the block chain greatly improve the attack cost and ensure the safety and the reliability of the switch opening and closing remote control command.
The data transmission and synchronization technology used in the invention can reduce the probability of time delay and the influence caused by error information of synchronous integration of the data files at the side end of the terminal of the distributed station.
In the invention, a decentralizing distributed cooperative operation mode is adopted, the data quantity of the block chain is distributed to each interval unit, and the integration of data such as fixed value, log, fault wave recording, historical data and the like is completed by the cooperation of all interval units through the block chain technology, so that the data loss caused by the fault of a central node in a management mode with a public unit as the center is reduced.
Drawings
FIG. 1 is a block diagram of the overall architecture of the system interacted with by the substation of the present invention;
FIG. 2 is a block chain based data entry flow diagram of the present invention;
FIG. 3 is a block chain based switch remote control flow chart of the present invention;
FIG. 4 is a block chain based file synthesis flow chart of the present invention.
Detailed Description
Example 1
A distributed terminal interaction platform for a distribution website built based on a blockchain technology in a blockchain-based substation interaction system in the embodiment comprises a request sending module, a request receiving module, an identity tag authentication module, a request verification module and an execution module, wherein blockchain supporting terminal entities (such as a public unit, a spacing unit, a station Internet of things gateway, a feeder automation switch and the like) cooperate in a decentralizing mode. In the data interaction of the power distribution website, the interval unit generates new data, wherein the data can comprise a switch opening and closing state, historical data, logs, wave recording and the like, a request sending module in the interval unit submits data to be chained to a blockchain processing node for data packaging and issues a data chaining request to a blockchain network, and the request comprises an identity tag and a data description of an interval unit requester;
the request receiving modules in the public unit and other interval units receive the data link-in request, the other interval units verify the identity tag of the requester through the identity tag authentication module, the interval unit identity authentication relies on a power system physical model consensus method, the public unit and other interval units verify the data link-in request through the request verification module, and the data link-in request of the requester which approves the identity tag is judged to be valid. And each interval unit obtains consensus on the validity of the data request and issues the consensus to the block chain network. The intelligent contract of the interval unit reads the consensus authorization result and writes the data into the blockchain through the execution module.
Example 2
According to the distribution station interaction system based on the blockchain, the problems of information safety and data loss commonly existing in side-end interaction in the prior art are improved, key information such as identity information, data information and control information related in a distributed terminal side-end interaction business link of a station are recorded through a data organization form of the blockchain, and the characteristics of incapability of forging, incapability of falsifying, transparency of disclosure and reliability of on-off control are guaranteed, so that the information safety, data integrity and reliability of the distribution station are maintained.
As shown in FIG. 1, the distributed terminal interaction platform of the power distribution website constructed by the block chain technology is a service platform of decentralization. Blockchain support terminal entities (e.g., public units, spacer units, station internet of things gateways, feeder automation switches, etc.) cooperate in a "decentralised" mode. One or more blockchain nodes and "decentralized" applications may be deployed on one terminal entity. The end entities connect to the blockchain nodes through the non-centralized application, thereby cooperating with each other on the blockchain. In this embodiment, the edge computing device public unit, the end device interval units deployed by each interval cabinet of the power distribution station and other auxiliary devices are used as blockchain network nodes, and cooperate with each other in a "decentralization" mode to realize safe side-end data interaction, operation, synchronization and integration.
In a distributed station terminal of a distribution network based on a block chain, data of interval units are stored in a distributed mode through a block chain structure, coordination operation rules are established for each interval unit through intelligent contracts, transmission of commands and data is achieved through network layer technology, data are added and updated through a node consensus algorithm, verification and execution are carried out on the commands, and safety of the data and the commands is guaranteed through an encryption algorithm and a verification mechanism. The blockchain system includes a data layer, a network layer, a consensus layer, an incentive layer, a contract layer, and an application layer, which in this embodiment is specifically:
and the data layer encapsulates business data such as logs, historical data, fixed values, wave recording data and the like of the power distribution website, encrypts each block data, links with the last block through specific information, and provides a basis for distributed storage and mutual calling of the distributed stations of the power distribution network. The blockchain adopts decentralized distributed storage, and the damage of partial nodes does not affect the integrity of the system.
And the network layer adopts a P2P point-to-point transmission protocol and an authentication mechanism. P2P technology specifies that each network participant is able to download and transfer data, and therefore relies solely on the bandwidth and performance of the network participant and is not limited to the performance of a few devices. The characteristics of non-centralization, point-to-point, load balancing and the like are favorable for efficient transmission of network layer data, and are matched with the characteristics of non-centralization of the blockchain.
And the consensus layer is used for generating and updating data by using a distributed node consensus algorithm by the block chain. The consensus algorithm is a mathematical algorithm for realizing trust establishment and interaction of each unit in the block chain distributed terminal system. When one interval unit executes data submission, other interval units in the block chain check the reasonability of the action according to a consensus algorithm, and the equipment can execute the operation after consensus is reached. In this embodiment, the common algorithm adopts a three-phase proving mechanism and a fault section proving mechanism.
The contract layer, the blockchain technology can make powerful script, and encapsulate system algorithm and mechanism, so that the terminal unit accessing to the blockchain can execute operation instructions orderly according to the contract. When the triggering condition specified by the contract is met, the intelligent contract automatically drives each interval unit to execute the command and transmit the data.
And the application layer is responsible for realizing various application scenes such as real-time state monitoring, fault studying and judging, relay protection and the like of the power distribution website.
As shown in fig. 2, in the data interaction of the power distribution website, a number 1 interval unit generates new data, wherein the data can include a switch opening and closing state, historical data, a log, a wave recording and the like, the interval unit submits data to be chained to a blockchain processing node for data packaging and issues a data chaining request to a blockchain network, and the request comprises an identity tag and a data description of a requester;
and verifying the identity label of the requester, authenticating the identity of the interval unit by means of a power system physical model consensus method, authenticating the three-phase current phase angle with a current time stamp when the interval unit submits data to the blockchain by other interval units, judging that the phase angle is synchronous with the wide area of the interval unit by more than 51 percent of interval units, approving the identity of the interval unit, checking the data link request by the public unit and other interval units, and judging that the data link request of the requester approving the identity label is valid. And each interval unit obtains consensus on the validity of the data request and issues the consensus to the block chain network. The intelligent contract for interval 1 reads the consensus authority and determines whether the data is written to the blockchain.
And data is synchronously integrated, and all interval unit nodes issue the data to the blockchain network according to the requirement. After the common unit and each interval unit read out the data blocks with specific time marks and types of all intervals on the block chain, all the interval data blocks are integrated according to time marks and data types and are analyzed and integrated into corresponding files for in-situ algorithm analysis or remote reading analysis by a master station.
As shown in fig. 3, a data link-in request is performed on the switch state information of each interval unit, the switch state information of each interval unit is issued, the switch state information is packed and written into a blockchain, and is issued to a blockchain network, after the interval unit completes the link-in of the switch state information (a brake-off state) according to the data interaction flow, when a public unit or other interval units or a feeder automation switch wants to perform a brake-on operation on a No. 1 interval unit switch, a No. 1 interval unit switch brake-on request can be initiated to a blockchain processing node, and the processing node forms request information based on the information of both sides and issues to the blockchain network.
The remote control initiating unit initiating the request extracts the corresponding switch state information of the requested interval unit in the blockchain, forms a remote control authorization request based on the switch state information of the requested interval unit in the blockchain, writes the remote control authorization request into the blockchain, and issues the remote control authorization request to the blockchain network; the remote control authorization request includes: switch state information of a remote control target unit requested to be remotely controlled, remote control description information and identity tags of both sides. The remote control target unit is a spacing unit.
The other third party interval units verify the remote control authorization request, firstly verify the identity label of the remote control target unit of the requested person, the identity label contains the three-phase of the remote control target unit at the request time, other interval units compare whether the phase is consistent with the other interval units at the request time, more than 51% of interval units judge that the phase is synchronous with the other interval units, the identity of the remote control target unit is approved, secondly verify the identity label of the remote control request submitter, namely the remote control initiating unit, the remote control request submitter is a public unit or an interval unit, the public unit identity authentication relies on an encryption chip issued by a national power grid company integrated with the public unit, the public unit identity certificate is read from the chip and distributed to the interval units, each interval unit verifies the digital signature of the public unit by using the certificate, and the identity of the public unit is authenticated, more than 51% of interval units verify that the signature is successful, and the identity of the public unit is approved. Then analyzing the fault state before the line of the station to confirm whether the distribution line fault occurs in a specific time interval; and finally, analyzing whether the switch state meets the switching-on requirement.
And analyzing the request according to the identity tag, the switch state, the remote control description and the fault information in the time zone of the blockchain in the remote control authorization request, and giving a conclusion whether the request is authorized or not. If the remote control request is satisfied, other nodes on the network acknowledge that the switch remote control request is valid, the interval unit issues a request authorization result to the blockchain after remote control authorization consensus is achieved, the intelligent contract of the interval unit 1 reads the remote control consensus authorization result and executes a closing operation, and the operation is completed to update switch state information (closing state) to the blockchain according to a data link-in request flow.
As shown in fig. 4, when a line ground fault occurs in the power distribution station, all the interval unit nodes complete wide-area synchronous wave recording, and after the wave recording is completed, the wave recording data is distributed to the blockchain network according to the data interaction flow.
After the common unit and each interval unit read all the interval wave recording blocks on the block chain, integrating wave recording data of all sampling channels at all intervals according to the fault time mark A and the fault wave recording data type to form a combo format wave recording file for in-situ algorithm analysis or remote reading analysis by a master station.
The present embodiment also provides a computer storage medium storing a program of a voltage control system control method, which is executed by at least one processor.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing embodiments are merely for illustrating the technical aspects of the present invention and not for limiting the scope thereof, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes, modifications or equivalents may be made to the specific embodiments of the present invention after reading the present invention, and these changes, modifications or equivalents are within the scope of the invention as defined in the appended claims.
Claims (8)
1. A blockchain-based power distribution website interaction system, comprising:
the request receiving module is used for receiving a data link-in request issued to the blockchain network;
the identity tag authentication module is used for authenticating the received identity tag of the requester corresponding to the data link-in request and issuing an authentication result to the blockchain network;
the request verification module is used for verifying the data link-in request, judging that the data link-in request is valid when the identity tag of the requester passes authentication and the data of the request link-in accords with the link-in piece, authorizing the valid data link-in request and issuing an authorization result to the block chain network;
the execution module is used for writing data into the blockchain according to the authorization result;
the data link-in request comprises a switch state information link-in request of a plurality of interval units, the interval units are end equipment deployed for each interval cabinet of the power distribution station, and after the link-in of the switch state information is completed, switching-on operation is performed on the interval unit switches;
the request receiving module is used for receiving a remote control authorization request issued to the blockchain network, the remote control authorization request is formed by a remote control initiating unit based on the on-off state information of a remote control target unit in the blockchain, the remote control target unit is a spacing unit, the remote control initiating unit is a spacing unit or a public unit, and the public unit is computing equipment at the edge of the power distribution station;
the identity tag authentication module is used for authenticating identity tags of the remote control initiating unit and the remote control target unit and issuing an authentication result to the blockchain network;
the request verification module is used for verifying the remote control authorization request, judging that the remote control authorization request is valid when the identity tags of the remote control initiating unit and the remote control target unit pass the authentication and the remote control target unit accords with the remote control condition, authorizing the valid remote control authorization request and issuing an authorization result to the blockchain network;
the execution module is used for executing the remote control operation of the switch on the remote control target unit according to the authorization result and updating the switch state information of the remote control target unit to the block chain network;
the public unit integrated encryption chip comprises an identity certificate of the public unit, the identity label authentication module receives the identity certificate sent by the public unit and sends the identity certificate to the interval unit, the interval unit verifies the digital signature of the public unit according to the identity certificate, and if the interval unit verification exceeding the threshold number is successful, the identity of the public unit is approved.
2. The system of claim 1, further comprising a request transmitting module for issuing a data in-link request to the blockchain network, wherein the data in-link request includes an identity tag and a data description of the requestor.
3. The system of claim 2, wherein the remote authorization request includes an identity tag of a remote originating unit, an identity tag of a remote target unit, on-off status information of the remote target unit, and remote description information.
4. The system of claim 3, wherein the identity tag authentication module receives the three-phase current phase angle with the current timestamp sent by the interval unit and sends the three-phase current phase angle with the current timestamp to other interval units, the other interval units authenticate the three-phase current phase angle at the time of the timestamp, and if the other interval units exceeding the threshold number judge that the phases are synchronous with the own wide area, the identity of the interval unit is approved.
5. The system of any one of claims 3 to 4, wherein all the spacer units distribute data to the blockchain network on demand, and the common unit and each spacer unit parse and integrate all the data according to specific time scales and types.
6. A method of blockchain-based power distribution website interaction employing the blockchain-based power distribution website interaction system of claim 1, comprising the steps of:
(1) Receiving a data link-in request issued to a blockchain network;
(2) Authenticating the received identity tag of the requester corresponding to the data link-in request, and issuing an authentication result to a blockchain network;
(3) Checking the data link-in request, judging that the data link-in request is effective when the identity tag of the requester passes authentication and the data of the request link-in accords with the link-in piece, authorizing the effective data link-in request and issuing an authorization result to a blockchain network;
(4) And writing the data into the block chain according to the authorization result.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of claim 6 when the computer program is executed by the processor.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of claim 6.
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