Traveling-Wave-Based Fault-Location Technique for Transmission Grids Via Wide-Area Synchronized Voltage Measurements

Korkali, Mert; Lev-Ari, H.; Abur, Ali

doi:10.1109/tpwrs.2011.2176351

Cited by 162 publications

(99 citation statements)

References 29 publications

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“…To reduce the influence of the noise in the coefficients the squares of the wavelet coefficients can be calculated [144].…”

Section: Automatic Fault Location Strategymentioning

confidence: 99%

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Online Location of Faults on AC Cables in Underground Transmission Systems

Jensen

2014

Springer Theses

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University in partial fulfilment of the requirements for the PhD degree in Electrical Engineering. The research has been carried out between the 1.09.2010 and the 15.07.2013 at the Department of Energy Technology for Energinet.dk by which I was hired as a PhD-student for the entire project period.The project has been followed full time by two supervisors: Professor Claus Leth Bak (Department of Energy Technology) and Dr. Unnur Stella Gudmundsdottir (Energinet.dk).Energinet.dk has fully funded the research leading to this thesis "Online Location of Faults on AC Cables in Underground Transmission Systems". This funding has been vital for this research project. Travelling to conferences, two visits at forging research institutions, renting of laboratory equipment and performance of and field measurements was made possible thanks to support from the company. During the projet period I supervised two master projects and thought one semester course in power system transients.The scientific papers written as a part of this PhD are included in the back of both the printed version of the thesis as well as in the PDF-file. The papers should not be considered a part of this monograph, but are enclosed if the reader is interested.This thesis has five parts and appendices. An overall literature reference list is presented at the end of the main report. A list of the authored publications is presented at the end of the thesis. Literature references are shown as [i], where i is the number of the literature in the reference list. Tables, figures and equations are shown as C.F, where C is the chapter number and F is a unique number for the figure or table. AcknowledgementsI owe gratitude to many people who helped me in different ways. I would like to thank:• My supervisors, Claus Leth Bak and Unnur Stella Gudmundsdottir for all their help, comments, and many technical discussions during the last three years.• Carl-Erik Madsen, Henrik Kastberg and Carl Willi Hansen for their help with carrying out the field measurements. In the same regards, a very special thanks is extended to Filipe Faria da Silva and Unnur Stella Gudmundsdottir for participating during all measurements.• Filipe Faria da Silva for numerous technical discussions, for reading large parts of the thesis and for many good times in the office.• Rasmus Schmidt Olsen, Unnur Stella Gudmundsdottir, Joachim Holbøll, Per Balle Holst, Poul Erik Pedersen, Thomas Kvarts, Carsten Rasmussen, Claus Leth Bak and Bjarne Søndergaard Bukh for their contributions and comments during the project period.• Everyone at the transmission department at Energinet.dk for their contributions.• Professor Ali Abur for his hospitality and comments to my work during my three month stay at North Eastern University in Boston 2012.• • A special thanks to Dr. Jeewantha Da Silva for numerous discussions, valuable advice and guidance throughout the entire project period.• To Prof. Athula Rajapakse and PhD-student Kasun Nanayakkara both from University of Manitoba, Winnipeg, Manitoba for valuable discuss...

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“…To reduce the influence of the noise in the coefficients the squares of the wavelet coefficients can be calculated [144].…”

Section: Automatic Fault Location Strategymentioning

confidence: 99%

“…Commonly, the mean value of these WLC is multiplied a safety margin value to make the triggering immune for noise [144].…”

Section: Automatic Fault Location Strategymentioning

confidence: 99%

Online Location of Faults on AC Cables in Underground Transmission Systems

Jensen

2014

Springer Theses

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“…New techniques [15] combine synchronized voltage measurements at widely dispersed locations and use a traveling wave the-oretical framework to triangulate the location of a fault. Followup work [14] places a minimum number of sensors at strategic locations so that all possible faults become observable using the traveling-wave technique.…”

Section: Strategies For Placing Pmusmentioning

confidence: 99%

Identification of topology changes in power grids using phasor measurements

Wiel

Bent

Casleton

et al. 2014

Appl Stoch Models Bus & Ind

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Phasor measurement units (PMUs) are increasingly important for monitoring the state of an electrical power grid and quickly detecting topology changes caused by events such as lines going down or large loads being dropped. Phasors are complex valued measurements of voltage and current at various points of generation and consumption. If a line goes down or a load is removed, power flows change throughout the grid according to known physical laws and the probability distribution of phasor measurements changes accordingly. This paper develops a method to estimate the current topology of a power grid from phasor measurements and considers the design goal of placing PMUs at strategic points in a distribution system to achieve good sensitivity to single-line outages. From a vector of phasor measurements probabilities are computed corresponding to the scenario that all power lines are operational and to alternate scenarios in which each line goes down individually. These probabilities are functions of the joint distributions of phasor measurements under each possible scenario, obtained through Monte Carlo simulations with random load profiles. We use log-spline densities to estimate marginal distributions of phasor measurements and fold these into a multivariate Gaussian copula to capture important correlations. Sensitivity to outages varies according to which line goes down and where PMUs are placed on the grid. A greedy search algorithm is demonstrated for placing PMUs at locations that provide good sensitivity to single-line outages.

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“…As long distance measurement and synchronization system has been widely used, the existing power grid monitoring technology is changing rapidly, and the synchronization problem of double-terminal positioning is solved. However, most of lines are single-circuit line so that huge amounts of resources need to be consumed in the process of fault location [2]. Multiterminal location could integrate data from all the grid, so it is good at improve the accuracy of fault location and optimize the structure of networks [3].…”

Section: Introductionmentioning

confidence: 99%

A New Data Fusion Method for Multi Terminal Fault Location Based on Sensor Networks

Cai

2018

ITM Web Conf.

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Abstract. Data fusion with different types of data that used for grid fault location can bring more accurate and clear results. Therefore, a new method for fault location which contains multi grid current and voltage, time and coordinate data information is proposed. Transient traveling wave is analyzed for determine the required data information in the first place, and then affirm the positioning principle and the selection rules of positioning network according to characteristics of multi fault traveling wave. Finally, Grid fault location will be precisely positioned by applying multiple data grid fault location algorithm. Simulation results shows that the proposed method is feasible, and the new algorithm has higher positioning accuracy.

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Traveling-Wave-Based Fault-Location Technique for Transmission Grids Via Wide-Area Synchronized Voltage Measurements

Cited by 162 publications

References 29 publications

Online Location of Faults on AC Cables in Underground Transmission Systems

Online Location of Faults on AC Cables in Underground Transmission Systems

Identification of topology changes in power grids using phasor measurements

A New Data Fusion Method for Multi Terminal Fault Location Based on Sensor Networks

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