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A smart grid equipment safety diagnosis service system based on blockchain technology

A service system and smart grid technology, applied in the fields of homomorphic encryption and data integrity verification, can solve problems such as network congestion and inappropriate maintenance of smart devices, improve utilization efficiency, avoid distributed denial of service attacks, and ensure security. sexual effect

Active Publication Date: 2021-02-19
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the traditional public Blockchain requires all nodes in the network to synchronize information on the distributed storage chain, this will lead to network congestion
In the present invention, it is not necessary for all nodes to participate in bookkeeping, so none of the above solutions is applicable to the maintenance of smart equipment in the smart grid

Method used

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  • A smart grid equipment safety diagnosis service system based on blockchain technology
  • A smart grid equipment safety diagnosis service system based on blockchain technology
  • A smart grid equipment safety diagnosis service system based on blockchain technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] Embodiment 1: During the warranty period, the original supplier node performs remote maintenance (RMW). which is Figure 5 The corresponding steps are as follows:

[0113] (1) Faulty node k i Adopt the encryption parameters of the original supplier node Encrypted equipment failure information, including: possible failure points of equipment, failure performance, etc. Get the fault ciphertext after encryption Then generate the corresponding signature

[0114] (2)k i Send fault message give v i . Note that T represents the current timestamp, which is used to prevent replay attacks. At the same time, in order to prevent false requests, the faulty node must pay a certain amount of Ethereum as a deposit to the smart contract for the safety diagnosis of the decentralized device.

[0115] (3) Original supplier node v i After receiving the message, first verify the message to ensure that the message comes from a legal device node k i , to verify that the data h...

Embodiment 2

[0121] Embodiment 2: On-site maintenance (SMW) performed by the original supplier node during the warranty period. which is Image 6 The corresponding steps are as follows:

[0122] (1) Faulty node k i Adopt the encryption parameters of the original supplier node Encrypted equipment failure information, including: possible failure points of equipment, failure performance, etc. Get the fault ciphertext after encryption Then generate the corresponding signature

[0123] (2)k i Send fault message give v i . Note that T represents the current timestamp, which is used to prevent replay attacks. At the same time, in order to prevent false requests, the faulty node must pay a certain amount of Ethereum as a deposit to the smart contract for the safety diagnosis of the decentralized device.

[0124] (3) Original supplier node v i After receiving the message, first verify the message to ensure that the message comes from a legal device node k i , to verify that the dat...

Embodiment 3

[0132] Embodiment 3: Remote maintenance (ROW) performed by a non-original supplier node outside the warranty period. which is Figure 7 The corresponding steps are as follows:

[0133] (1) Faulty node k i Publish diagnostic request information to the decentralized device security diagnostic smart contract, including S, At the same time, the faulty node pays a certain amount of ether to the smart contract address as a deposit. If the node issues a false request, the deposit will not be returned.

[0134] (2) After each diagnostic node in the alliance chain sees the diagnostic request of the faulty node, check the k i The equipment type S determines whether the equipment is within the scope of its own maintenance, that is, whether it is capable of diagnosing the equipment. And according to the request node k i reputation Determine whether to provide diagnostic services for it.

[0135] (3)nv i When willing to provide diagnostic services for the node, submit a bid to t...

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Abstract

A security diagnosis service system for smart grid equipment based on blockchain technology, including three participants: faulty equipment, original and non-original suppliers of equipment, and smartphones owned by users. When the faulty device is within the warranty period, the original supplier node will provide free diagnostic services for it. Otherwise, the maintenance and diagnosis rights of the equipment will be decided by the original supplier node and non-original supplier nodes through the decentralized equipment security diagnosis smart contract. According to the bidding price and reputation value of the responding node, the contract uses a multi-dimensional reverse auction method to determine the successful bidding node and diagnosis price. After the device diagnosis is completed, the relevant diagnostic information will be packaged and sent to the smart phone. The user will formulate the device operation policy and control the smart contract through the smart phone and according to the received message, so as to realize the efficient operation of the device. In the process of information interaction, a homomorphic encryption algorithm is used to ensure the security of the interactive information, and to ensure that the diagnostic information and the privacy of both parties will not be leaked during the interaction.

Description

technical field [0001] The invention belongs to the security management and service of smart grid equipment, and relates to block chain technology in the field of information security, and methods for homomorphic encryption (Paillier) and data integrity verification. Background technique [0002] Smart grid is a comprehensive network system integrating traditional network and modern communication technology, which can realize optimal transmission and power distribution between suppliers and users. The smart grid has good controllability, which solves the problems of low interaction rate, low energy utilization rate and difficult security analysis of the traditional grid. Due to the outstanding advantages of smart grid in terms of interactivity, intelligence and security, it has become a new trend in grid construction and will bring huge social benefits. [0003] Smart grid includes many contents, mainly including: smart substation, relay protection device, smart meter, smar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L9/32G06Q30/08G06Q40/04H02J13/00
CPCG06Q30/08G06Q40/04H02J13/0013H04L9/3247H04L41/06H04L41/0677H04L41/30Y02B70/30Y04S10/50Y04S20/20Y04S40/20Y04S50/10
Inventor 张小红范末婵
Owner JIANGXI UNIV OF SCI & TECH
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