Non-linear Dynamic Modeling and Robust H∞ Control System Design of Galloping Oscillations in High Voltage Transmission Lines - دانشکده فنی و مهندسی
Non-linear Dynamic Modeling and Robust H∞ Control System Design of Galloping Oscillations in High Voltage Transmission Lines
نوع: Type: thesis
مقطع: Segment: masters
عنوان: Title: Non-linear Dynamic Modeling and Robust H∞ Control System Design of Galloping Oscillations in High Voltage Transmission Lines
ارائه دهنده: Provider: Elahe Jomoor
اساتید راهنما: Supervisors: Dr. Mehdi Karimi
اساتید مشاور: Advisory Professors:
اساتید ممتحن یا داور: Examining professors or referees: Dr.Alireza shoshtari , Dr.rahman seyfi
زمان و تاریخ ارائه: Time and date of presentation: 11 october 2020
مکان ارائه: Place of presentation:
چکیده: Abstract: Galloping is a phenomenon that causes high-amplitude and low-frequency oscillations on high-voltage transmission cables. This phenomenon has unfortunate consequences such as short circuit and failure and fatigue of transmission lines. The aim of the present dissertation is to design a H∞ resistant controller to reduce galloping fluctuations in high voltage transmission lines. For this purpose, first, the dynamics of the transmission line on the vertical plate is analyzed and the nonlinear dynamical equations are solved using two methods of multiple time scales and averaging and compared with each other. Then the optimal resistant nonlinear controller with the desired number of piezoelectric actuators is used and system simulation and controller performance performance and validation of results are performed with the results of other researchers' work. Finally, the results of simulations performed with the MATLAB program are given.