智能变电站安全运检技术研究及应用

发布时间：2018-12-11 13:06

【摘要】：随着智能变电站通信平台网络化的深入发展,二次设备严重依赖网络,未来智能变电站网络发展方向为站内网络安全带来了新的挑战,对智能变电站安全运检提出了新的要求。智能变电站的配置描述(substation configuration description,SCD)是全站虚回路体系关键配置文件,其正确与否、有无变动直接影响了继电保护功能的正确性。智能变电站大规模成熟应用及后期运维改扩建给SCD文件的风险管控带来了新的挑战,文中分析了现有SCD文件管理方法及其风险现状,提出了区域智能变电站SCD文件管控策略体系,在此基础上完成区域智能变电站配置文件管控平台建设,使得不同参与者从设计、调试、维护到改扩建等各个环节均能对SCD文件进行有效地管理,确保SCD文件的唯一性和有效性。关注和重视智能变电站安全运检技术,研究适应于智能变电站内部网络的安全策略十分必要。本文在智能变电站组网方式及结构基础上详述了各种网络报文的特征并定量计算它们的流量大小,从威胁站内网络安全的三个来源分析了智能变电站网络安全现状,通过增加网络交换机的实时监测功能并提出站内交换机多部门协调管理职责,从技术和管理两方面提出了适用于智能变电站网络的安全策略,文中最后对未来智能电网变电站网络安全发展方向进行了展望。本文研究的目的在于:未来的智能电网是有快速自愈功能的,不仅仅体现在网架物理结构上,同样也表现在二次信息网络系统中。通过建立区域智能变电站SCD文件管控平台,为接下来智能变电站网络信息安全发展搭建控制网络运行特性的网络安全风险综合评估模型,在此模型的基础上建立大电网内网络系统设计方法、网络安全指标和评价工具,最终达到抵御外界侵袭并抑制内部网络风险的目的,为智能变电站的大规模成熟运用及后期运维改扩建提供重要的技术和管理条件。
[Abstract]:With the development of intelligent substation communication platform network, secondary equipments rely heavily on network. The development direction of intelligent substation network will bring new challenges to the network security in the future, and put forward new requirements for intelligent substation security operation and inspection. The configuration description of intelligent substation (substation configuration description,SCD) is the key configuration file of the virtual loop system of the whole station. The correctness of relay protection function is directly affected by its correctness or not. The large-scale mature application of intelligent substation and the extension of operation and maintenance in the later period bring new challenges to the risk management of SCD files. This paper analyzes the existing SCD file management methods and their risk status. This paper puts forward the SCD document management and control strategy system of regional intelligent substation. On this basis, it completes the construction of regional intelligent substation configuration file management platform, which makes different participants design and debug. SCD files can be managed effectively through maintenance, reconstruction and extension to ensure the uniqueness and validity of SCD files. It is necessary to pay attention to the security operation and inspection technology of intelligent substation and study the security strategy suitable for the internal network of intelligent substation. In this paper, the characteristics of various network packets are described in detail on the basis of the way and structure of intelligent substation network, and their traffic size is calculated quantitatively. The present situation of network security in intelligent substation is analyzed from three sources that threaten the network security of intelligent substation. By adding the real-time monitoring function of the network switch and putting forward the multi-department coordination management responsibility of the intra-station switch, the security strategy suitable for the intelligent substation network is put forward from the aspects of technology and management. Finally, the future development direction of smart grid substation network security is prospected. The purpose of this paper is: the future smart grid has the function of quick self-healing, not only in the physical structure of the grid, but also in the secondary information network system. Through the establishment of the SCD file control platform of the regional intelligent substation, a comprehensive network security risk assessment model is built to control the network operation characteristics for the next intelligent substation network information security development. On the basis of this model, the design method, network security index and evaluation tools are established to resist the external invasion and restrain the internal network risk. It provides important technical and management conditions for large scale mature application of intelligent substation and later operation and maintenance reconstruction and extension.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM63;TM76

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