Open AccessSCADA modeling for performance and vulnerability assessment of integrated cyber–physical systems
Author(s) -
Stefanov Alexandru,
Liu ChenChing,
Govindarasu Manimaran,
Wu ShinnShyan
Publication year - 2015
Publication title -
international transactions on electrical energy systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 42
ISSN - 2050-7038
DOI - 10.1002/etep.1862
Subject(s) - scada , controllability , testbed , observability , cyber physical system , smart grid , vulnerability (computing) , electric power system , computer science , computer security , critical infrastructure , grid , information and communications technology , supervisory control , embedded system , engineering , reliability engineering , control (management) , computer network , power (physics) , electrical engineering , operating system , physics , geometry , mathematics , quantum mechanics , artificial intelligence , world wide web
Summary On top of the power infrastructure reside information and communication technology (ICT) layers for monitoring and control of the grid. The cyber and power systems together form a complex structure, which is referred to as a cyber–physical system (CPS). If the power system's observability and controllability are compromised due to communication and cyber security problems, the grid can be exposed to catastrophic events. As a result, there is a great need to model the interactions between ICT and power grids. This paper proposes a new model and simulation platform for the supervisory control and data acquisition (SCADA) system of an integrated CPS. SCADA performance is assessed based on communication time delays. Methods to model cyber intrusions and assess the CPS security are proposed. The success rates for unauthorized access and control of power devices are computed. The impact on the grid is evaluated and the attack with the highest efficiency is identified. The proposed method is tested with the IEEE 39‐bus system on a SCADA testbed. Copyright © 2013 John Wiley & Sons, Ltd.