时间同步攻击对雷电定位系统的影响与分析  

Influence and Analysis of Time Synchronization Attack on Lightning location System

作　　者：刘亮[1] 苏盛[1] 陈晓国 张恒[1] LIU Liang;SU Sheng;CHEN Xiaoguo;ZHANG Heng(Hunan Province Key Laboratory of Smart Grids Operation and Control,Changsha University of Science and Technology,Chang-sha 410004,China;Electric Power Research Institute of China South Grid,Guangzhou 530080,China)

机构地区：[1]智能电网运行与控制湖南省重点实验室(长沙理工大学),长沙410004 [2]南方电网科学研究院有限责任公司,广州530080

出　　处：《高电压技术》2020年第12期4319-4325,共7页High Voltage Engineering

基　　金：国家自然科学基金(51777015);湖南省自然科学基金(2020JJ4611)。

摘　　要：雷电定位系统基于卫星授时技术实现时间同步。为分析时间同步攻击对雷电定位系统的影响,在剖析现有电力时间同步安全防护措施的基础上,论文首先构建了考虑恶意时间同步攻击的雷电定位模型。其次,引入泰勒算法进行定位求解。最后,结合佛山雷电定位系统基于蒙特卡洛模拟法进行了定位误差的反演实验。研究结果表明:雷电定位精度与时间同步攻击下探测站的时间偏移呈正相关关系;当中心站点时间偏离0.2μs时,探测网边界点定位误差较正常误差可达3.16倍,验证了时间同步攻击对雷电定位系统的影响。A lightning location system realizes time synchronization based on satellite timing technology. In order to analyze the influences of time synchronization attacks on the lightning location system, by analyzing the existing time synchronization security protection measures in the power industry, firstly, we constructed a lightning location model in which the malicious time synchronization attacks were taken into consideration. Secondly, we introduced the Taylor algorithm for location solution. Finally, based on the Monte Carlo simulation method, the inversion experiment of positioning error was performed based on the Foshan Thunderbolt positioning system. The research results show that the accuracy of lightning location is positively correlated with the time offset of the detection station under time synchronization attacks;when the time of the central station deviates by 0.2 μs, the positioning error of the detection network boundary point is 3.16 times higher than the normal error, which verifies the effect of time synchronization attacks on the lightning location system.

关 键 词：雷电定位系统 时间同步攻击 探测站 卫星授时 定位精度 误差分析 

分 类 号：TM863[电气工程—高电压与绝缘技术]