NDLI: Parameter-free fault location for transmission lines based on optimisation

Content Provider	IET Digital Library
Author	Davoudi, Masoud Sadeh, Javad Kamyab, Ebadollah
Abstract	An accurate algorithm for locating faults on two-terminal transmission lines is presented in this study. The presented method does not require values of line parameters to locate the fault; therefore variation of line parameter values does not affect its accuracy. The method utilises synchronous post-fault measurements of currents and voltages in both terminals and is based on the distributed time-domain representation of transmission lines. Unlike conventional methods, fault location is converted to an optimisation problem. Then, this problem is solved by genetic algorithm to find the accurate location of fault. Furthermore, modifying the problem to be solved by the Newton optimisation method is discussed in this study. Simulation results performed by ATP/EMTP verify high accuracy of the presented method, and reveal that it is not significantly affected by fault resistance, fault type, fault inception angle and source impedance. Moreover, effect of measurement errors and synchronisation errors on the accuracy of presented method have been analysed which verify the efficiency of the algorithm in these conditions.
Starting Page	1061
Ending Page	1068
Page Count	8
ISSN	17518687
Volume Number	9
e-ISSN	17518695
Issue Number	Issue 11, Aug (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/9/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2014.0425
Journal	IET Generation, Transmission & Distribution
Publisher Date	2015-02-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	ATP-EMTP Currents Synchronous Post-fault Measurement Distributed Time-domain Representation EMTP Fault Inception Angle Fault Location Fault Resistance Genetic Algorithm Interpolation And Function Approximation Mathematical Analysis Measurement Error Newton Method Newton Optimisation Method Numerical Analysis Optimisation Problem Optimisation Technique Parameter-free Fault Location Power System Protection Power Transmission Cables Power Transmission Fault Power Transmission Line Source Impedance Synchronisation Synchronisation Error Time Domain Analysis Two-terminal Transmission Line Voltage Synchronous Post-fault Measurement
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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