Abstract—From the long time ago properly and reliable operation of power systems were being the major portion of designer's and operators concernment. In the interconnected power systems voltage and frequency of system are most significant parameters for analysis the power system operation. In this paper sudden blackouts in a supposition interconnected power system will be simulate and effect of under frequency load shedding to restore the power system in stable condition will be study.

Index Terms—Frequency load shedding; interconnected power system; stability; frequency relays.

Gh. Shahgholian and M. Ebrahimi Salary are with the Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Esfahan, Iran. (e-mail: shahgholian@iaun.ac.ir).

Cite: Ghazanfar Shahgholian, Member, IACSIT, Mahdi Ebrahimi Salary, "Effect of Load Shedding Strategy on Interconnected Power Systems Stability When a Blackout Occurs," International Journal of Computer and Electrical Engineering vol. 4, no. 2, pp. 212-217, 2012.