Alleviation of the Oscillation Behavior in Kundur Benchmark via Fuzzy Based Resistive Braking Scheme Considering Time Latencies and Declined Inertia

Oscillation behavior is usually experienced in all power grids as an inherent characterization related to their very existence. Inter-area oscillations are considered to be the most likely to jeopardize the synchronous integrity in power grids. They cause declining the quality conditions of the transmitted power which could have adverse impacts on big consumers’ load fed directly from the transmission grid. Therefore, the prime target of this investigation is to alleviate the power oscillations resulting from the different grid disturbances. This aim is accomplished by utilizing a fuzzy based resistor braking strategy taking three energization signals into consideration. Additionally, various time latencies are considered to examine and evaluate the propositioned strategy under these conditions. Also, declined inertia situations resulting from the escalated incursion levels of grid-connected photovoltaic plants are considered to examine the propositioned strategy from a futuristic operational perspective. For examining the effectivity of the propositioned strategy, non-linear time-domain simulation studies are conducted on Kundur benchmark via MATLAB/Simulink platform. Five comparative simulation studies of the benchmark after being subjected to variety of perturbations demonstrate the effectivity of propositioned strategy.

Keywords:

Dynamic resistor braking , , Fuzzy logic control , , Kundur benchmark , Oscillation behavior