Abstract

This paper describes using a Simultaneous Faults Method for Smart Grid Power System research. One of the characteristics of Smart Grid Power System is high grade interconnection of grid nodes known from the internet network. That means that connection of power sources is very variable and time to time can be changed. Connection changes also change short circuit conditions so that grid protection settings have also to be very variable. For research into Smart Grid Power System protection, a program has been developed allowing for a quick and well-arranged output of short circuit conditions in every node of Power Grid. Program also allows for simulation of basic power grid protections elements like overcurrent, differential, and direction overcurrent protection elements. To determine the fault conditions first needs to be found in the Power Grid steady state of power flow. After that a Simultaneous Faults Method is used for fault conditions solving.

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