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Provide new protection system for the management of energy resources with regard to the use of distributed generation sources in smart grids
In distribution networks, energy from the source is transmitted radially to load points and has a very simple protection system. The linkage of distributed generation resources to distribution networks has created challenges,such as protecting it. The short-circuit current is variable due to the presence of distribution generation sources and the flow direction can be two-way. Properly network configuration to provide consumers with high reliability and quality of energy is one of the important activities in distribution networks. In this paper a new central protection system is offerred, which it uses a wide communication for network monitoring, Distributed Generation sources, and updating relay error currents according to shifts in the system and by central control system to open and close keys in DG, main network keys and etc. The suggested method is put to use in a network in cluding wind turbine equipped with steady magnetism synchro generator, by using PSCAD/EMTDC software.