Minimization of Shaft Torsional Oscillations by Fuzzy Controlled Braking Resistor Considering Communication Delay
نویسندگان
چکیده
This paper analyzes the effect of the fuzzy logic-controlled braking resistor (BR) on minimizing shaft torsional oscillations of the generators in a multi-machine power system. The influence of communication delay associated with the fuzzy controller input calculation on minimizing shaft torque oscillations is investigated. Global Positioning System (GPS) is proposed for the practical implementation of the calculation of the input of the fuzzy logic controller. Simulation results of a balanced fault at different points in the power system show that the fuzzy logic-controlled braking resistor can minimize the shaft torsional oscillations of synchronous generators well. Moreover, the communication delay has an influence on minimization of shaft torque oscillations. Key-Words: Braking resistor, Communication delay, Fuzzy controller, Global positioning system (GPS), Minimizing shaft torsional oscillations, TKED, Time derivative of TKED.
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