NUMERICAL ALGORITHM FOR ARCING FAULTS DETECTION AND FAULT DISTANCE CALCULATION ON OVERHEAD LINES

In this paper a new numerical algorithm for arcing faults detection an d fault distance calculation will be presented. It provides the soluti on for both the symmetrical and the unsymmetrical faults. The algorith m is based on the line terminal voltages and currents processing. A si mple square wave are voltage model is assumed to model the long are in free air in computer simulation and algorithm development. The freque ncy dependence of line parameters is taken into account. A series of c omputer simulated and laboratory tests have shown that the new algorit hm can be utilized in transmission system practice.