CAJ | 학술논문

在电力信息物理融合系统(cyber physical system，CPS)中，信息空间中的风险有可能传递到电力空间中并导致电力设备故障。为此，有必要研究信息安全风险在电力 CPS 中的传播机制。首先，阐述了电力 CPS 中信息安全风险跨空间传播的基本形式，指出智能终端设备是安全风险跨空间传播的必经之路；之后，根据电力 CPS 的特点和细胞自动机理论的特征，建立了电力 CPS 中信息物理安全风险的传播模型。最后，以 MATPOWER 中自带的三机九节点系统为例，通过仿真计算分析了风险跨空间传递概率、故障细胞治愈概率等因素对风险传播的影响，也讨论了仿真时间间隔对仿真结果的影响。
재전력신식물리융합계통(cyber physical system，CPS)중，신식공간중적풍험유가능전체도전력공간중병도치전력설비고장。위차，유필요연구신식안전풍험재전력 CPS 중적전파궤제。수선，천술료전력 CPS 중신식안전풍험과공간전파적기본형식，지출지능종단설비시안전풍험과공간전파적필경지로；지후，근거전력 CPS 적특점화세포자동궤이론적특정，건립료전력 CPS 중신식물리안전풍험적전파모형。최후，이 MATPOWER 중자대적삼궤구절점계통위례，통과방진계산분석료풍험과공간전체개솔、고장세포치유개솔등인소대풍험전파적영향，야토론료방진시간간격대방진결과적영향。
In a cyber-physical power system, cyber space risks can result in the failure of a power system. Thus, it is necessary to study the propagation mechanism of cyber physical security risks. In this paper, the basic propagation path of cyber physical security risks in a cyber-physical power system is first analyzed. Then, a risk propagation model of the cyber physical security is proposed based on the cellular automata and the characteristics of a cyber-physical power system. Finally, numerical simulations are carried out based on a 9-bus system in MATPOWER. Through these simulations, some important impact factors on the propagation of cyber physical security risks are discussed, such as the transfer probability and recovery rate. The impacts of the simulation time interval on simulation results are discussed as well.