Testing Impedance Based Fault Location Using Orthogonal Components For Different Fault Parameters

Fault location is one of the most common aspects of power system analysis and protection. In order to maintain system's stability and avoid long lasting blackouts, it is important to localize a fault in shortest possible time. This paper analyzes already published impedance-based fault location methods and suggests new algorithm based on orthogonal components. Proposed method is applied on Simulink created three phase model, considering various system specifications including different fault resistance values, having more than one fault on a line at different locations, grounded and ungrounded generators effects, sampling rate changes, line length effects, etc. The results are indicating good accuracy of the algorithm itself.