Design and Experimental Testing of Longitudinal Differential Anti-Overstep Tripping Protection Device for Coal Mine Substations
In order to solve the overstep tripping fault in the power supply system in which the line fault of the lower substation makes the upper substation trip,based on the analysis of the power supply system,it is proposed to apply the longitudinal differential anti-overstep tripping protection technology based on fiber-optic communication in the power supply network.Focusing on the principle of fiber-optic current longitudinal differential anti-overstep tripping protection technology,the anti-overstep tripping protection device is designed,and the performance of the device is tested based on the experimental platform,which is found to be able to solve the overstep tripping fault.
substationoverstep trippinglongitudinal differential protectionclock synchronizationfiber-optic communication
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