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A Qualitative Identification Method for Information Assets of Substation Automation Systems

机译：变电站自动化系统信息资产的定性识别方法

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摘要

Information security risk assessment combined with power control process is not a properly resolve problem, the lack of asset identification method accord with characteristics of power information systems is one of the main factors. Network-based substation automation systems (SAS) are typical power information systems, based on the analysis of difficulties on asset identification, a complete information asset identification method is introduced from three aspects, includes asset classification, task identification, and asset valuation. In the asset classification, combined with the IEC 61850 standard, a structured asset model is defined based on association of actual intelligent electronic devices and virtual logical nodes. In the task identification, take functions of substation automation as the object of task, the concept of function graph is defined to reflect the logical relations between functions and assets, as well as the logical relation between the assets. In the asset valuation, two levels of asset value include function level and substation level, are defined to quantify the information security properties of assets and the effects of possible accidents. Finally, an evaluation instance is constructed from IEC 61850 standard, the proposed method is applicable to asset identification of network-based SAS.
机译：信息安全风险评估与权力控制过程相结合并不恰当解决问题，缺乏资产识别方法符合电力信息系统的特点是主要因素之一。基于网络的变电站自动化系统（SAS）是典型的电力信息系统，基于难以分析资产识别的困难，从三个方面引入了完整的信息资产识别方法，包括资产分类，任务识别和资产估值。在资产分类中，与IEC 61850标准组合，基于实际智能电子设备和虚拟逻辑节点的关联定义了结构化资产模型。在任务识别中，将变电站自动化的功能作为任务对象，函数图的概念被定义为反映函数和资产之间的逻辑关系，以及资产之间的逻辑关系。在资产估值中，两个级别的资产价值包括函数水平和变电站，定义为量化资产的信息安全性质和可能的事故的影响。最后，评估实例由IEC 61850标准构建，该方法适用于基于网络的SAS的资产识别。

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