Frequency control of isolated network with wind and diesel generators by using fuzzy logic controller

Due to the recent expansion of renewable energy applications, wind energy conversion is receiving much interest all over the world. However, output fluctuations of wind generators cause network frequency variations in power systems. This can decrease the power quality and then cause a restriction of wind farm installation, especially in an isolated network, for example, electrical power system in a small island. Therefore the problem of output fluctuation needs to be solved for expanding further the wind energy conversion. This paper presents a new application of fuzzy logic controller (FLC) to an isolated network with a high penetration no storage wind diesel (HPNSWD) system for improving the network frequency quality. The validity of the proposed controller is evaluated by computer simulation analysis using Matlab/Simulink. The effectiveness of the fuzzy logic controller is then compared with that of a PID controller.