基于区块链与数据湖的电力数据存储与共享方法

针对电力物联网边设备之间、云主站平台营配调各系统之间的数据存储和共享的需求，提出了一种基于区块链与数据湖的电力数据存储与共享方法。首先，设计边缘层分布式电力数据存储架构，通过环签名和CryptoNote协议对边设备存储节点间的数据交互进行加密，实现双方身份认证，并基于区块链智能合约实现电力数据安全存储系统中节点间的数据共享。然后，基于数据湖与智能合约构建营配调平台间的数据共享和访问控制模型，其中在区块链中存储数据的哈希值，并在可信执行环境下将加密后的原始数据存储在数据湖中，以实现数据跨平台跨域安全共享和访问。最后，搭建实验平台对所提方法进行论证，结果表明，所提方法的最高存储延迟时间不高于25ms、并且吞吐量和安全性也较高。

Power data storage and sharing method based on blockchain and data lake

Aiming at the requirements of data storage and sharing between side devices and among marketing distribution dispatching systems in cloud master station platform of power Internet of things, a power data storage and sharing method based on blockchain and data lake is proposed. Firstly, the edge layer distributed power data storage architecture is designed to encrypt the data interaction between edge device storage nodes through ring signature and cryptonote protocol, realize the identity authentication of both parties, and realize the data sharing between nodes in power data security storage system based on blockchain intelligent contract. Then, the data sharing and access control model between the operation and dispatching platforms is constructed based on the data lake and the smart contract, in which the hash value of the data is stored in the blockchain, and the encrypted original data is stored in the data Lake in the trusted execution environment, so as to realize the cross platform and cross domain secure sharing and access of data. Finally, an experimental platform is built to demonstrate the proposed method. The results show that the maximum storage delay time of the proposed method is no more than 25ms, and the throughput and security are also higher.