Regad, M., Helaimi, M., Taleb, R., Gabbar, H., & Othman, A. (2020). OPTIMAL FREQUENCY CONTROL IN MICROGRID SYSTEM USING FRACTIONAL ORDER PID CONTROLLER USING KRILL HERD ALGORITHM. Electrical Engineering & Electromechanics, (2), 68–74. https://doi.org/10.20998/2074-272X.2020.2.11