Smart grid equipment with blockchain technology

Glossary

Term DefinitionsSmart grid is an integrated network system that integrates traditional networks and modern communication technologies to achieve optimal transmission and distribution of electricity between suppliers and usersBlockchain is a distributed accounting technology with the characteristics of decentralization and immutabilityEthereum is an open source, blockchain-based distributed computing platform that supports smart contractsSmart Contract is a piece of code stored on the blockchain that is automatically executed when predefined conditions are triggeredConsortium Blockchain is a semi-decentralized blockchain maintained by multiple institutionsConsensus Mechanism is a mechanism for nodes in a blockchain network to reach consensus on dataPre-selected accounting nodes are a part of the nodes pre-selected in the consortium chain that are responsible for verifying transactions and packaging them into new blocksMerkle Tree is a tree structure used to efficiently verify data integrityHomomorphic Encryption is a form of encryption that allows calculations to be performed on ciphertext, and the decrypted result is consistent with the result of the same calculation on the plaintextPaillier encryption algorithm is an asymmetric encryption algorithm with additive homomorphismDigital signature (Digital Signature) An electronic signature method used to verify the integrity and source of data BLS short signature A digital signature algorithm based on bilinear pairings, with the characteristics of short signature length and fast verification speed Multidimensional reverse auction (Multidimensional Reverse Auction) An auction format in which the buyer proposes a demand, multiple sellers bid, and finally the transaction is completed at the lowest price Reputation value (Reputation Value) An indicator used to evaluate the reliability of nodes Symmetric truncated mean method A method of calculating the average value, by eliminating the highest and lowest data to reduce the impact of outliers Test questions

Short answer questions

Briefly describe the advantages of smart grids compared to traditional grids.

What are the characteristics of blockchain technology?

Explain the difference between consortium chains and public chains.

What role do smart contracts play in the smart grid equipment security diagnosis service system?

How do decentralized equipment security diagnosis smart contracts prevent false requests and malicious bidding?

Briefly describe the application of the multidimensional reverse auction mechanism in determining equipment diagnosis service providers.

Explain how the Paillier encryption algorithm ensures the security of diagnostic information interaction.

What role does the BLS short signature play in the system?

Briefly describe the role of reputation value in selecting diagnostic service providers.

What functions do smartphones have in the smart grid equipment safety diagnosis service system?

Answer

Compared with traditional power grids, smart grids have the advantages of strong interactivity, high energy utilization, and high security, and can better realize the automation, intelligence, and interactivity of power systems.

Blockchain technology has the characteristics of decentralization, immutability, transparency, and traceability.

The main difference between consortium chains and public chains is the different permissions of participants. Anyone can participate in the public chain, while only authorized institutions or individuals can participate in the consortium chain.

Smart contracts play the role of automatically executing contracts in the smart grid equipment safety diagnosis service system, such as decentralized equipment safety diagnosis smart contracts, which are used to automatically select diagnostic service providers and pay fees.

Decentralized equipment safety diagnosis smart contracts prevent false requests and malicious bidding by requiring faulty nodes and diagnostic nodes to pay a deposit when issuing requests and participating in bidding.

When determining the equipment diagnosis service provider, the multi-dimensional reverse auction mechanism comprehensively considers the bid price and reputation value, and selects the best diagnostic service provider with the lowest ranking price.

The Paillier encryption algorithm is an asymmetric encryption algorithm with semantic security. Even if the attacker obtains the ciphertext, the plaintext information cannot be inferred, thus ensuring the security of diagnostic information interaction.

BLS short signature is used to verify the authenticity and integrity of diagnostic information interaction, ensuring that the information cannot be denied and forged.

Reputation value is an important indicator for evaluating node reliability. Faulty nodes will give priority to diagnostic service providers with high reputation values.

In the smart grid equipment security diagnosis service system, smartphones can receive diagnostic information of devices and formulate corresponding device operation policy smart contracts based on the diagnostic results to achieve remote monitoring and management of devices.