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This paper presents a new application of fuzzy logic (FL) to 1 an isolated network with a High Penetration, no-storage wind-diesel (HPNSWD) system. As a result of a study referring the behavior of an isolated electric system facing frequency disturbances, a fuzzy logic controller (FLC) was developed to improve the system´s dynamic performance. The validity of the proposed controller is evaluated by computer analysis using MATLAB/SIMULINK. The simulation results demonstrated that a small-scale wind turbine generation unit can be freely operated in an isolated distribution network without creating violation in power balance and voltage profile. The effectiveness of the fuzzy logic controller is then compared with that of a proportionalintegral-and differential (PID) controller.Index Terms-Fuzzy logic controller (FLC), frequency controller, wind turbine, isolated network, wind and diesel hybrid system, high penetration no storage wind diesel (HPNSWD) system.

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