Cyber Topologies Impacts on Smart Grid Reliability Considering Direct Cyber-Power Interdependency

Authors

Faculty of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran

Abstract

Due to the rising interest of using smart grids and its unreliable nature, the reliability analysis is highly regarded. The application of communication infrastructures and information technology in smart grids has created a system consisting power and cyber networks (control, monitoring, and protection networks). Due to the fact that cyber networks are prone to failure, using methods that cover the proper operation of both cyber and power networks together are essential for assessing reliability indices of smart grids. The importance of considering direct cyber network failures on reliability assessment is also studied. Cyber network topology transition is the main solution for the improvement of reliability assessment that is discussed in this paper. The method is simulated on an actual distribution network of Hormozgan Regional Electrical Company (HREC) of Iran. By calculating the reliability indices, the results clarify that smart grid reliability assessment will not be improved without considering an optimal cyber network topology. So, optimization techniques are used for improving reliability assessment, with the consideration of the constraints.

Keywords

References

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علائم و اختصارات
 
iامین ماتریس حالت سیستم
 
در دسترس پذیری المان k ام
 
متغیر باینری معرف دسترس‌پذیریj  امین تجهیز درi  امین ماتریس حالت سیستم
 
در دسترس ناپذیری المان k ام
 
تعداد اجزای شبکه سایبری
 
نرخ خرابی
 
تعداد اجزای شبکه قدرت
 
نرخ تعمیر
 
احتمال حالت i ام
 
توان تولیدی
LOLP1
احتمال از دست رفتن بار
LOLE2
تعداد ساعات از دست رفتن بار
LOEE3
انرژی مورد انتظار از دست رفته
sgn
تابع علامت
 
میانگین سرعت
 
انحراف معیار
 
سرعت قطع ابتدایی
 
سرعت قطع انتهایی
 
توان بار
 
پارامتر شکل
 
توان تلفاتی
 
پارامتر مقیاس
 
توان تولیدی پست
 
توان نامی باد
 
مجموع بارزدایی در حالات مختلف
 
سرعت نامی
EENS19
انرژی مورد انتظار تأمین نشده
 
 

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