摘要： 为适应电力市场化改革趋势实现支持复杂交易形式的电力交易系统，基于区块链技术提出一种分布式电力竞价交易算法。将竞价交易分为出价及应价2种交易，针对同一笔出价交易，允许多笔应价交易存在，并由节点服务器通过对所有应价交易进行排序比价决定胜出交易。基于有序聚合签名对交易顺序及交易内容进行验证，确保交易的真实性，同时利用保序加密技术对交易内容进行保护，确保交易隐私数据的机密性。在此基础上，通过区块链存储所有交易，确保交易的不可篡改性。实验结果表明，该算法可以有效提高交易生成及验证效率，快速达成安全的电力竞价交易。

关键词: 区块链, 有序聚合签名, 保序加密, 电力竞价交易, 电力市场化改革

Abstract: To embrace the marketization reform of Chinese power system,this paper proposes a blockchain-based algorithm for distributed power auction transaction,so as to realize a power bidding system that supports complex forms of transactions.The algorithm divides relevant transactions into two types:offering and responding.Multiple responders are allowed to compete for an offering,and a node server will sort the responders by price to decide the winner.The order and content of transactions are verified based on sequential aggregate signature to ensure the authenticity of transactions.Also,order-preserving encryption is adopted to protect the content of a transaction,thus ensuring the confidentiality of private data.On this basis,all transactions data are stored by using blockchain technologies to ensure the transactions are tampering-resistant.Experimental results show that the proposed algorithm can improve the efficiency of transactions generation and verification,enabling quick and safe power bidding transactions.

Key words: blockchain, sequential aggregate signature, order preserving encryption, power bidding transaction, marketization reform of power

中图分类号: 

• TP18