An accurate scheme for fault location in combined overhead line with underground power cable

Gilany, Mahmoud; Din, El Sayed Tag El; Aziz, M.M. Abdel; Ibrahim, Doaa Khalil

doi:10.1109/pes.2005.1489308

Cited by 25 publications

(10 citation statements)

References 12 publications

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“…The Bergeron model of the two cables is used as it is quite suitable for computer simulation. The physical and insulation constants of each phase of the two cables are given in [16].…”

Section: Simulated Case Studymentioning

confidence: 99%

Traveling-Wave-Based Fault-Location Scheme for Multiend-Aged Underground Cable System

Gilany

Ibrahim

Eldin

2007

IEEE Trans. Power Delivery

146

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This paper presents a novel wavelet-based fault-location scheme for aged cable systems when synchronized digital fault recorded data are available at the two terminals of each cable. The proposed scheme estimates the fault location in multiend-aged cable systems using the theory of wavelet singularity detection as a powerful signal processing tool. The arrival of the first and second voltage traveling waves at both ends of the power cables can be identified reliably. The developed wavelet processing scheme is applied on the modal coordinates instead of the phase coordinates. The proposed scheme has the ability to eliminate the impact of the change in the propagation velocity of the traveling waves on the fault-location calculations. This will help solve the problem of cable changing parameters, especially the change of the relative permittivity of the cable with age. The method is valid even with faults that are very close to busbars. Characteristics of the proposed fault-location scheme are analyzed by extensive simulation studies using Alternative Transients Program/Electromagnetic Transients Program. The results indicate an accepted degree of accuracy for the suggested fault locator.

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“…The Bergeron model of the two cables is used as it is quite suitable for computer simulation. The physical and insulation constants of each phase of the two cables are given in [16].…”

Section: Simulated Case Studymentioning

confidence: 99%

Traveling-Wave-Based Fault-Location Scheme for Multiend-Aged Underground Cable System

Gilany

Ibrahim

Eldin

2007

IEEE Trans. Power Delivery

146

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“…In more recent work, the capacitive effect of the cable is taken into account in for instance [16,17,18]. The latter two references depend on a commonly used assumption in fault location research; the modal decomposition can be calculated using a real modal transformation matrix (Clarke transformation eg).…”

Section: Impedance-based Methodsmentioning

confidence: 99%

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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“…One of the possible solutions to this problem is related to the dependence of the currents at the source end of a line on the distance to the short circuit point [5]- [9]. However, there are reasons that decrease the accuracy of the short current point detection, namely: variations in the effective values of the voltage at the transmission line connection point, as well as the dependence of the current amplitude on the voltage phase at the time of short circuit.…”

Section: Introductionmentioning

confidence: 99%

On-Line Determination of the Coordinates of a Short Circuit Point in Transmission Lines

Suslov

Solonina

2017

PEE

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-One of the challenges facing electric power systems is the failure of overhead and cable transmission lines. Short circuits pose a particular danger. This fact requires increasingly faster information acquisition and processing for estimating a system state and making preventive measures to ensure sustainable power supply with minimum loss of time. This paper is devoted to the problem of on-line determination of the coordinates of a short circuit point in the transmission line. The suggested methods are based on the assumption that the short circuit current at the transmission line beginning depends on the distance to the short circuit point.

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An accurate scheme for fault location in combined overhead line with underground power cable

Cited by 25 publications

References 12 publications

Traveling-Wave-Based Fault-Location Scheme for Multiend-Aged Underground Cable System

Traveling-Wave-Based Fault-Location Scheme for Multiend-Aged Underground Cable System

Online Location of Faults on AC Cables in Underground Transmission Systems

On-Line Determination of the Coordinates of a Short Circuit Point in Transmission Lines

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