智能电网虚假数据攻击检测及防范研究

发布时间：2018-05-25 20:50

本文选题：智能电网 + 数据采集与监视系统　；参考：《华北电力大学》2014年硕士论文

【摘要】：智能电网将提供可靠、廉价、可持续的电力服务,在应对各种用电需要和突发情况下,其智能控制中心能够做出一系列决策以保证智能电网的安全与稳定运行。智能控制中心的核心组成部分EMS的子系统SCADA则根据智能电网运行状态实时发出命令,保证电网正常运行。虚假数据攻击是近几年来提出的针对SCADA系统状态估计的新型攻击方法,它能够绕过系统的监测与防御,影响系统状态估计的结果,使控制中心获得错误的系统运行信息继而做出错误的决策。虚假数据攻击最初发现于线性直流系统,目前已经有存在于大型的、复杂的、交流的状态估计系统的虚假数据攻击方式。而当前针对这种攻击方式的研究还处于初步阶段,因此在智能电网环境下,分析系统存在的数据漏洞,研究相应的检测与防范方法,具有十分重要的理论与现实意义。论文针对智能电网虚假数据攻击问题进行研究,具体工作包括： 1.研究了虚假数据攻击的基本原理,并在此基础上分析虚假数据攻击方式及对系统运行造成的影响,以及对电力系统其他模块的攻击方式及影响； 2.通过分析虚假数据攻击对系统的影响,以数据检测方式为手段,依据系统状态的运行规律和历史数据,提出了基于系统状态的状态和检测方法,并与传统不良数据检测方法进行了比较分析； 3.从防范的角度入手,通过分析进行有效的虚假数据攻击时需要的条件,提出了采用保护测量值安全的保护集方法来防范这种攻击方式。当网络结构变化时,提出了更新与扩展保护集的改进方法,从而防范虚假数据攻击,保障智能电网网络安全； 4.分别在IEEE14-bus和118-bus标准测试系统上进行了实验,通过大量仿真结果验证了所提出的虚假数据攻击检测与防范方法的有效性。
[Abstract]:Smart grid will provide reliable, cheap and sustainable power services. In response to various power needs and emergencies, its intelligent control center can make a series of decisions to ensure the security and stability of the smart grid. The SCADA subsystem of EMS, the core component of the intelligent control center, sends out commands according to the operation state of the smart grid in real time to ensure the normal operation of the power grid. The false data attack is a new attack method for state estimation of SCADA system proposed in recent years. It can bypass the monitoring and defense of the system and affect the results of system state estimation. Causes the control center to obtain the wrong system operation information and then makes the wrong decision. False data attack was first found in linear DC system, but it has existed in large, complex, AC state estimation system. At present, the research on this attack mode is still in the initial stage. Therefore, it is of great theoretical and practical significance to analyze the data vulnerabilities in the smart grid environment and to study the corresponding detection and prevention methods. In this paper, the problem of smart grid false data attack is studied, including: 1. The basic principle of false data attack is studied, and on this basis, the attack mode of false data and its impact on the operation of the system, as well as the attack mode and influence on other modules of power system are analyzed. 2. By analyzing the influence of false data attack on the system, by means of data detection, according to the running rule and historical data of system state, the state and detection method based on system state is put forward. And compared with the traditional bad data detection method. 3. From the point of view of prevention, by analyzing the conditions needed for effective false data attacks, this paper puts forward a protection set method to guard against this attack by using the protection set method to protect the measured values. When the network structure changes, an improved method of updating and extending the protection set is put forward to guard against the false data attack and to ensure the security of the smart grid network. 4. Experiments were carried out on IEEE14-bus and 118-bus standard test systems, and the effectiveness of the proposed methods for detecting and preventing false data attacks was verified by a large number of simulation results.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM76

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