中国电力 ›› 2022, Vol. 55 ›› Issue (4): 44-53.DOI: 10.11930/j.issn.1004-9649.202109102

• 新型电力系统信息安全:理论、技术与应用 • 上一篇    下一篇

基于DHT和区块链技术的电网安全稳定控制终端分布式认证

赖业宁1, 封科1, 于同伟2, 王旺1, 唐冠军1   

  1. 1. 国网电力科学研究院有限公司,江苏 南京 210003;
    2. 国网辽宁省电力有限公司电力科学研究院,辽宁 沈阳 110000
  • 收稿日期:2021-09-18 修回日期:2021-12-18 出版日期:2022-04-28 发布日期:2022-04-24
  • 作者简介:赖业宁(1975—) ,男,博士,高级工程师,从事大电网安全稳定控制技术研究,E-mail:laiyening@sgepri.sgcc.com.cn;封科(1992—) ,男,通信作者,硕士,工程师,从事大电网安全稳定控制技术研究,E-mail:fengke1@sgepri.sgcc.com.cn;于同伟(1978—),男,硕士研究生,高级工程师,从事智能电网保护与控制研究,E-mail:Yu_twei@163.com;王旺(1991—) ,男,硕士,工程师,从事大电网安全稳定控制技术研究,E-mail:wangwang@sgepri.sgcc.com.cn;唐冠军(1988—) ,男,硕士,高级工程师,从事大电网安全稳定控制技术研究,E-mail:tangguanjun@sgepri.sgcc.com.cn
  • 基金资助:
    国家电网有限公司科技项目(电网分布式智能化安全稳定控制关键技术研究,5100-201928005A-0-0-00)

Distributed Authentication of Power Grid Safety and Stability Control Terminals Based on DHT and Blockchain

LAI Yening1, FENG Ke1, YU Tongwei2, WANG Wang1, TANG Guanjun1   

  1. 1. State Grid Electric Power Research Institute, Nanjing 210003, China;
    2. Research Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang 110000, China
  • Received:2021-09-18 Revised:2021-12-18 Online:2022-04-28 Published:2022-04-24
  • Supported by:
    This work is supported by Science and Technology Project of SGCC (Research on Key Technologies of Distributed Intelligent Safety and Stability Control in Power Grid, No.5100-201928005A-0-0-00).

摘要: 电网安全稳定控制系统终端资源有限、业务实时性要求高,现有认证方案难以兼顾系统的安全性、实时性和存储效率。将分布式哈希表(distributed Hash table, DHT)技术与区块链技术相结合,提出基于跳图(skip graph)结构DHT的区块链分布式存储优化方法;设计了基于DHT和区块链技术的电网安全稳定控制终端分布式认证方案,给出了终端注册、入网和认证的流程与关键算法;分析了该方案的安全性和时空复杂度;对认证方案进行系统实现,从平均认证时延和平均终端存储开销2方面进行了实验测试,验证了该方案的可行性和在时空效率方面的优势。方案在不影响电网安全稳定控制系统终端间通信效率的同时提升了终端间通信安全性,进而保障了电网的安全稳定运行。

关键词: 安全稳定控制系统, 区块链, 认证, 分布式存储, skip graph

Abstract: The power grid safety and stability control system has limited terminal resources and high requirement for real time response, and existing authentication schemes can hardly satisfy the requirements of the system for safety, real-time ability and storage efficiency. By combining the distributed Hash table (DHT) technology with the blockchain technology, a blockchain distributed storage optimization method is firstly proposed based on DHT of Skip Graph structure. And then a distributed authentication scheme of power grid safety and stability control terminals is designed based on DHT and blockchain technology, and the process and key algorithms for terminal registration, network access and authentication are given. The safety and spatial-temporal complexity of the proposed scheme are analyzed. The authentication scheme is systematically implemented, and experiments are performed on its average authentication latency and average terminal storage cost, which has verified the feasibility of the proposed scheme and its advantages in spatial-temporal efficiency. The proposed scheme improves the communication safety between terminals of the power grid safety and stability control system without affecting the communication efficiency, thus ensuring the safe and stable operation of power grid.

Key words: safety and stability control system, blockchain, authentication, distributed storage, skip graph