Security scheduling and transaction mechanism of virtual power plants based on dual blockchains

Xiaohong Zhang,Ata Jahangir Moshayedi,Zilong Song

doi:10.1186/s13677-021-00273-3

Abstract

Aiming at the data authenticity and storage problems in the current coordinated scheduling of virtual power plants, as well as the opaque information and high transaction costs, a dual blockchains security mechanism is proposed to solve above problems. In the process of security scheduling, a hybrid attribute proxy re-encryption algorithm based on ciphertext strategy is designed. The algorithm is composed of an identity encryption algorithm and an attribute proxy re-encryption algorithm with ciphertext strategy. Combining blockchain, tamper-proof smart metering equipment can effectively solve data authenticity and confidentiality in the information transmission process of distributed energy. In the research process of the trading mechanism, a continuous double auction mechanism based on reputation is proposed. In order to create a favorable trading atmosphere, reputation-based market segmentation mechanisms are integrated, and participants are divided according to reputation value. Depending on the properties of the stored information, they are divided into the private blockchain (with coordination scheduling information) and the consortium blockchain (with transaction information). The system analysis shows the reliability of the dual blockchains architecture. The communication and calculation costs of the proxy re-encryption algorithm verify the practicability of the proposed scheme. The case analysis of the auction mechanism declares that the mechanism can operate effective in the electricity trading market.

Highlights

According to the global greenhouse gas emission data in 2010, energy production such as electricity and industry accounted for 76% of the total global emissions in that year
Distributed Energy Resources (DER) is mainly composed of Distributed Generation (DG), Distributed Energy Storage (DES), Dispatchable Load (DL), Electric Vehicle (EV) and so on [3]
Compared with the two parties, Continuous Double Auction (CDA) is more conducive to realizing the goal of maximizing benefits, which is the specific transaction mode adopted by the transaction model proposed in this paper. To ensure that both parties have good market behavior, we have introduced the concept of reputation in the CDA auction mechanism, each user has its own reputation

Summary

Introduction

According to the global greenhouse gas emission data in 2010, energy production such as electricity and industry accounted for 76% of the total global emissions in that year. Users with good reputation have the opportunity to participate in the consensus process of the system, thereby obtaining energy coins rewarded by the system To solve this problem, we combine the cost-effective identity-based encryption algorithm (IBE) [45] with ABPRE, and propose a hybrid attribute proxy reencryption algorithm based on ciphertext strategy (CPHAPRE). In the actual VPP security scheduling information sharing model, DER uses the ciphertext strategy attribute to encrypt the information recorded by the tamper-proof meter in real-time and upload it to the blockchain. When VPP requires DER to provide information for related scheduling operations, the DER agent uses the CP secret key SKS and the ID of the VPP to generate a re-encryption secret key RK S→IDVPP , and uses RK S→IDVPP to generate a reencrypted ciphertext CT IDVPP , which VPP can decrypt with the private key generated by its own ID The combination of this algorithm and the blockchain ensures that VPP can obtain real and safe DER information. DER agent randomly selects two random numbers k1; k2∈ZÃp , and calculates

H I Dproxy k2 1

H IDproxy

Findings

Conclusion