Fault location in medium voltage networks by the help of adapted triangulation principle

This paper describes a new fault location method for medium voltage networks consisting of power distribution lines with tree topology. The method is based on the adaptation of triangulation principle. It uses the detection of undervoltage wave propagation as a source of information for fault location calculation. The paper gives short description of triangulation principle adaptation, needed input data as well as factors influencing calculation accuracy. Calculation algorithm is then described in more details and its principle is explained through simplified short example of fault location calculation. Proposed method utilizes Smart Grid concept, because its functionality depends on data exchange between measuring points placed in distribution power lines and control centre, where the fault location calculation is done.