Abstract
This paper presents a review of the state of the art for fault location methods in transmission lines based on travelling waves. The motivations that led to these methods are explained historically. Also, a critical analysis, showing the advantages and disadvantages of each of them and their most common applications, is performed. Finally, a comparative analysis between two of the most widely used methods is carried out using real faults, in order to show the results’ sensitivity to changes in the line parameters.
Highlights
Even the best planned systems are subject to unpredictable events in transmission lines that place the system beyond the planned limits
This paper aims to show the efforts made to meet the needs of fault location in transmission lines that exist in the modern power systems
This paper presents a general overview about fault location on transmission lines
Summary
Even the best planned systems are subject to unpredictable events in transmission lines that place the system beyond the planned limits. The operators must deal with a very complex situation where they perform a series of procedures to achieve breakdown service These procedures always carry a significant expenditure of time. This paper complements other work which contains a review of the impedance-based methods [3]. With both papers, a review of the current state of the art of fault locators is reached. A review of the current state of the art of fault locators is reached A comparative analysis between two of the most widely used methods is made, using faults tests as examples to show the sensitivity results to changes in the fault records sampling rate
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