Fast transient fault-current detection based on PQR transformation technique for a solid-state fault current limiter

This paper describes analysis, modeling and simulation of electrical transient fault-current detection in power systems. The proposed modeling is based on simple numerical integration only, which is able to efficiently handle some sophisticated calculation. The proposed fault detector methods are sliding root mean square (SRMS) and PQR transformation technique. In this paper, an abnormal condition is situated by simply adding a fault impedance at the fault location. With the proposed methods, transient behaviors of voltages and currents can be evaluated and detected. To demonstrate the use of the proposed simulation, a simple two-bus test system was employed for test.