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The growth of the electric power system is currently rapid, causing an increase in the number and length of line to provide consumer services. In the line, there are often fault. Detection of fault location will speed up the repair process and can avoid more severe damage. Most studies refer to the fault location on the transmission line. But lately the determination of fault location in distribution system has begun to become a concern of researchers for the improvement of the quality of electricity services to consumers. This paper discusses about the determination of fault locations based on fault currents and the types of fault using data from the assumed 20 kV distribution system model. The estimate location is obtained from the fault current simulation results using the polynomial approach each type of fault. The result fault location by ignoring the fault resistance has the largest error obtained 0.74%. The fault location by including fault resistance needs an algorithm to looks for the right assumption fault resistance close to the unknown fault resistance that occurs. Keywords—fault location, fault current, fault resistance, distribution system

Estimating Fault Location Based on Fault Current in 20 kV Distribution System