New Fault-Location Method for a Single Multiterminal Transmission Line Using Synchronized Phasor Measurements

Abstract

This paper describes a new iterative method to locate a fault on a single multiterminal transmission line. The method uses synchronized voltage and current measurements from all terminals. Using positive-sequence components of the prefault and postfault waveforms, positive-sequence source impedances are estimated. Using these source impedances and the line data, the positive-sequence bus impedance matrix ( bus ) is formed. Using the properties of bus , an iterative algorithm is proposed. The algorithm first identifies the faulted section and then locates the fault on this section. This algorithm is applied to the data obtained from the Electromagnetic Transients Program simulation of a multiterminal transmission line. The simulation results show that the distinctive features of this method are that it performs with very high accuracy for all types of faults at different fault locations and is practically immune to fault resistance. Index Terms-Bus impedance matrix, Electromagnetic Transients Program (EMTP), fault analysis, fault location, synchronized phasor measurement.

Single phase fault diagnosis and location in active distribution network using synchronized voltage measurement

“…The model-based location method is derived considering the following assumption: the fault impedance of the metal fault is pure resistance [25]. The above assumption is common in the literature dealing with the location issue [26]. Therefore, from the observable bus i and j, the voltage and current phase angle signals at the fault branch satisfies the following principle…”

Fault Location Based on Synchronized Measurements: A Comprehensive Survey

“…Algorithms discussed in [ 53 – 59 ] are related to multiterminal lines. The iterative method presented in [ 53 ] uses synchronized voltage and current measurements from all terminals.…”

An analytical fault location method based on minimum number of installed PMUs

“…Fault location methods in transmission systems can be classified into two main categories: oneterminal methods [2][3][4][5] and multiterminal methods [6][7][8][9][10][11]. One-terminal methods calculate the fault location based on the voltage and current of one of the terminals of the faulted line.…”