Thesis Defense Announcement

The Herff College of Engineering announces the Final Thesis Defense of

Sultana Akhter

for the Degree of Master of Science

on October 31, 2018 at 1:00 PM in Engineering Science Building, Room 222

Advisor: Mohd. Hasan Ali

Exploring Cyber Security issues and solutions for various components of  DC Microgrid System

ABSTRACT: Nowadays, considering the growing demand for the DC loads and simplified interface with renewable power generation sources like photovoltaic (PV) system, wind generator, etc., DC microgrids could be cheaper and more efficient solutions for the power supply in a small-scale area. The supervisory control and data acquisition (SCADA) system maintains the bidirectional power communication through the integration of internet connectivity with the microgrid. However, this intelligent and interactive feature of the modern power grid may pose a cyber-security threat to the system. This work aims at exploring cyber-security issues and their solutions for various components of DC-microgrid system. To mitigate the adverse effects of cyber-attacks on the microgrid performance, two new techniques based on non-linear and proportional-integral (PI) controllers have been proposed. Various cyber-attacks, such as False Data Injection (FDI) attack, Distributed Denial of Service (DDoS) attack, etc., in the forms of single-attack, repeated attack, simultaneous attack on various components of the system, have been considered. Simulations results demonstrate the effectiveness of the proposed methods in mitigating the adverse effects of cyber-attacks on the DC microgrid performance.