Analysis of Voltage Dip Source Location Methods

The voltage dip is one of the prominent disturbances in power systems related to power quality. Therefore it is very important to investigate the methods which allow to determine voltage dip direction finder. In this work selected voltage dip source location methods are discussed and investigated. The analysis are performed in Matlab Simulink environment. The methods are tested using different kind of fault and different fault location. The dip direction is indicated using two selected methods based on analysis of energy and impedance variation during the disturbance. The methods are applied for the measurements aggregated in different nodes of power systems, representing supply and customer side respectively. Based on the results of the dip direction achieved by investigated methods a general conclusions are formulated about the correctness, advantages and disadvantages of the discussed methods.