The Study Of A New Algorithm And Device For Fault Location Based On Two-Terminal Asynchronous Data

When faults occur in the transmission line, locating the fault accurately and timely is propitious to eliminate the fault and restore power supply.Based on the comprehensive analysis of the application status and the existed problems of transmission line fault location, this dissertation presented a new algorithm for fault location based on two-terminal asynchronous data, which can make correction for the integrate error of line parameter, length of transmission line, sampling value and so on. At the same time, it can work out the two-terminal asynchronous phase angle with the corrected parameters. EMTP program shows that this algorithm can improve the accuracy of fault location evidently in contrast with other methods.Simultaneity, our group designed and completed a intellectualized device to be used for fault location on transmission line. The device can start-up accurately, monitor the voltage and current in real time, sampling as soon as fault take place and monitor power quality; especially accurate fault location. I did the software job in the group, planning and fulfilling the background application on my own.