A novel fault monitoring mechanism on overhead transmission line in power grid

Renewable energy based distributed generators (DGs) play an important part for generation of electricity. Distributed generation is supported by wind, solar energy, fuel cells and micro turbines using mini hydro, can provide significant momentum in future. A micro grid is distribution level network which includes many loads and DG source that operates as one combination load or generation supply. Micro grids operate at normal condition as well as faulty condition. We are using MATLAB Simulink's in this paper for controlling and monitoring the fault location of small portion of distribution network. In Smart Grid AC and DC both sources are used. We used both sources in model. If fault occurs in AC line, DC can give desired output. Here we simulate two major faults on transmission line and rectify it by using different electrical equipment. Here we analyze the fault current and voltage and protect the line by using breakers and transformer. The test results of the given simulation prove the usability of the system in terms of the parameters like voltage across the line and current through the line.