تحلیل حمله و دفاع سایبری در سطح پردازش پست‌های دیجیتال با روش تئوری بازی

نویسندگان

دانشگاه آزاد اسلامی - واحد علوم و تحقیقات تهران - گروه برق، قدرت - تهران

چکیده

استفاده از پست‌های هوشمند مبتنی بر فناوری دیجیتال در شبکه قدرت در حال افزایش است. در این پست‌ها انتقال اطلاعات از تجهیزات هوشمند سطح پردازش با سطوح مختلف، آن‌ها را مستعد حملات سایبری نموده است. در این مقاله حملات سایبری به حسگرهای سطح پردازش پست‌های دیجیتال در سه تجهیز سخت‌افزاری سوئیچ، واحد جمع کننده و واحد کنترل هوشمند بررسی می‌شود. تجزیه و تحلیل میزان حملات مهاجمین و دفاع صورت گرفته توسط مدافعین با روش نظریه بازی‌ها انجام می‌شود. بر اساس تعیین نقطه تعادل نش در درخت بازی معرفی‌شده، استراتژی بهینه حمله و دفاع تعیین می‌شود. روش پیشنهادی، میزان خسارت به حسگرهای سطح پردازش پست دیجیتال را مشخص می‌کند. با ارزیابی استراتژی دفاع سایبری، بودجه دفاعی بهینه جهت تأمین امنیت سایبری برآورد می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Analysis of Cyber Attack and Defense in Process Bus of Digital Substation by Game Theory

نویسندگان [English]

  • N. Fardad
  • S. Soleymani
  • F. Faghihi
Department of Electrical Engineering, Science and Research branch, Islamic Azad University, Tehran, Iran
چکیده [English]

The use of smart substations based on digital technology is increasing in the power system. In these substations, according to the data transmission from different levels to intelligent devices of process bus, makes them susceptible to the cyber-attacks. In this paper, cyber attacks are made to the sensors of process bus in three hardware equipment including switches, merging units and intelligent control units. Analysis of the attacks by attackers and created defense through defenders has been assessed with game theory. Regarding to the Nash Equilibrium point for the suggested game, the best attack and defense strategy is determined. According to the proposed method, the damage to the process bus sensors of digital substation can be specified. Optimal defense budget is estimated for cyber security through assessment of cyber defense strategy.

کلیدواژه‌ها [English]

  • Smart Grid
  • Cyber Attack
  • game theory
  • Digital Substation
  • Process Bus
  • Sensor
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