Fault location estimation for distribution system using simulated voltage sags data

This paper presents a new method for locating short-circuit fault in electrical distribution system. The method works by matching the actual voltage magnitude and phase angle with the simulated ones from fault analysis that stored in a database. The matching will give the possible faulty section/sections. A matching measurement algorithm is then applied to quantify the matching accuracy and to estimate faulty distance from particular bus on the section. In case more than one possible faulty section available, a ranking procedure is conducted to rank down the sections according to the degree of matching accuracy. A simulation test of the proposed method showed a satisfactory result.