frequency stabilizing and reducing power outages of the islanded power ‎network using a ‎load shedding method in the presence of renewable energy ‎resources

Controlling the frequency and voltage of the power network with renewable energy resources is one of the ‎most important things in the integrity of the network. therefore, after occurring any accident or fault in the ‎network, the frequency and voltage and in general all the basic parameters of the network must return to ‎their acceptable range within a certain period of time. despite all the technical, economic and environmental ‎advantages that renewable energy resources have, the presence of these kind of sources may have negative ‎effects on voltage profiles and protection coordination in distribution networks, it is also possible that a part ‎of the network acts as an unwanted island, which complicates the operation and control of the network and ‎creates a risk of electrocution for the network personnel. therefore, islanding detection is very important ‎and necessary in network protection and load shedding methods are usually used to eliminate this event. in ‎this paper, a multi-objective load shedding method in microgrids is proposed for the frequency stability and ‎reduction of power outages. among the advantages of the proposed method can be mentioned its flexibility, ‎speed of operation and high accuracy. the proposed method is applied and simulated on a microgrid in the ‎digsilent software environment, and the results of the simulation confirm the advantages of the proposed ‎method.‎