NDLI: Robust wide-area impedance-based fault location method utilising LAV estimator

Content Provider	IET Digital Library
Author	Hosseini, Seyed Ali Sadeh, Javad Mozafari, Babak
Abstract	This study presents a robust method for detecting the location of fault in the wide-area power networks considering the limited number of synchronised phasor measurement units. In this manner, by employing the positive-sequence components in the governing equations at pre- and post-fault occurrence, the fault location (FL) problem is formulated as an optimisation problem. The constructed objective function consists of two terms that are dependent on the voltage and current changes so that each of them can be employed in the optimisation procedure, alone. Various factors, such as cyber attacks and measurement device failures, may lead to induce the bad data to the measurement set, and thus the results will not be valid. Automatic detection and elimination of erroneous measurements, contaminated with gross errors, from the measurement set, will be carried out utilising the least absolute value (LAV) estimator. This is the most important property of the LAV estimator, in which the bad measurements will be screened and suppressed during the iterative optimisation. An algorithm based on LAV estimation is presented to identify the FL. The efficiency of the proposed method is not affected by fault type and resistance. The method is tested on IEEE 14-bus, 57-bus and 118-bus case studies and simulation results indicate the accuracy of the developed technique.
Starting Page	2475
Ending Page	2485
Page Count	11
ISSN	17518687
Volume Number	10
e-ISSN	17518695
Issue Number	Issue 10, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/10/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.1332
Journal	IET Generation, Transmission & Distribution
Publisher Date	2016-07-07
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bad Measurement Cyber Attack Fault Detection Fault Location Interpolation And Function Approximation Iterative Method Iterative Optimisation LAV Estimator Least Absolute Value Measurement Device Failure Numerical Analysis Objective Function Optimisation Optimisation Technique Phasor Measurement Positive-sequence Component Power System Fault Power System Measurement And Metering Robust Wide-area Impedance-based Fault Location Method Synchronised Phasor Measurement Units Wide-area Power Network
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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