Accurate fault location technique for power transmission lines

Johns, A.T.; Jamali, S.

doi:10.1049/ip-c.1990.0054

Cited by 183 publications

(98 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…With the development of cheap communication between substations, the two-terminal fault location methods become more widely used [25,26,27,28,29]. Because more information is available for calculating the fault location, the performance of these methods is generally better than single-terminal methods.…”

Section: Impedance-based Methodsmentioning

confidence: 99%

“…Often, distributed line models are used where these are based either on symmetrical components or are solved directly in the phase domain. In for instance [27], a two-terminal synchronised method that takes into account line asymmetry, shunt capacitance and fault resistance is setup. This method does, how-ever, assume that all self-and mutual impedances and admittances are known exactly.…”

Section: Impedance-based Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Online Location of Faults on AC Cables in Underground Transmission Systems

Jensen

2014

Springer Theses

View full text Add to dashboard Cite

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...

show abstract

Section: Impedance-based Methodsmentioning

confidence: 99%

Section: Impedance-based Methodsmentioning

confidence: 99%

Online Location of Faults on AC Cables in Underground Transmission Systems

Jensen

2014

Springer Theses

View full text Add to dashboard Cite

show abstract

“…In this part, the performance of this method is compared with that of the conventional transposed [4] and untransposed [1], [5], [45]- [47] fault location methods. To apply the conventional transposed method to untransposed lines, the mutual couplings between sequence circuits are ignored.…”

Section: A Proposed Two-terminal Fault Location Methodsmentioning

confidence: 99%

“…4 is used to evaluate the proposed and the conventional transposed [4] and untransposed [5] two-terminal fault location methods. The associated data and parameters of this 345 kV system are provided in Appendix F. By setting the line length equal to 400 km, a number of 1-ph-g faults are applied at eleven locations along this line.…”

Section: A Proposed Two-terminal Fault Location Methodsmentioning

confidence: 99%

Locating Faults on Untransposed, Meshed Transmission Networks Using a Limited Number of Synchrophasor Measurements

Azizi

Sanaye‐Pasand

Paolone

2016

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

Abstract-The method of symmetrical components is not effective for fault location in the case of untransposed lines, due to potential couplings between the sequence circuits. This paper proposes a non-iterative algorithm in the phase-coordinates for wide-area fault location on untransposed transmission networks. In doing so, first, an improved two-terminal method is suggested to accurately locate faults on untransposed lines. Next, an algorithm is proposed to infer voltage and current phasors at the faulted line ends without direct measurements, by taking advantage of the data provided by phasor measurement units (PMUs). Accordingly, the adverse effect of close instrument transformers transients on the estimation accuracy is minimized. Being highly nonlinear in terms of fault distance and impedance, the fault equations are derived and made linear in this paper by defining six suitable auxiliary variables. The resulting system of equations is solved using the least-squares method to obtain three-phase voltages and currents at the faulted line ends. A main feature of the proposed algorithm is that it only requires a limited number of current and voltage synchrophasors. An additional advantage of the proposed algorithm is that the faulted line is not required to be known a-priori. The proposed algorithm is validated using extensive simulation studies on the New England 39-bus test system, accounting for different fault locations, types and resistances.

show abstract

“…In [14] and [15], Takagi proposed the singleended technique based on measured pre-fault and post fault information which does not require a communication channel but the fault location accuracy may be affected by the assumption that the system has lossless transmission lines. Double-ended schemes as described in [16], [17] present simple and robust fault location methods but a GPS based synchronization is required to produce accurate fault location results. In [18]- [20] fault location methods were investigated based on a system distributed parameter model which provided a higher accuracy compared with traditional impedance models (ignoring the shunt capacitance).…”

Section: Introductionmentioning

confidence: 99%

Marine Power Distribution System Fault Location Using a Portable Injection Unit

Jia

Liu

Christopher

et al. 2015

IEEE Trans. Power Delivery

View full text Add to dashboard Cite

A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk 1  Abstract--A portable injection unit for Active Impedance Estimation (AIE) is built and tested in a DC zonal marine power distribution system to provide useful information for system protection and restoration. The portable unit generates current "spikes" and injects them into the system once short circuit faults are detected (by measuring the system voltage drop). The faulted system impedance can be estimated by AIE and comparing the estimated impedance with the pre-calibrated value, the fault location can be determined. The proposed method does not rely on system fault transient information or communication from the remote-end measurement and offers fast and accurate fault location in DC marine distribution systems. The proposed method has been tested and validated on a 750V, 2 MW twin bus DC Commercial Test Facility with the system both de-energised and energised.

show abstract

Accurate fault location technique for power transmission lines

Cited by 183 publications

References 8 publications

Online Location of Faults on AC Cables in Underground Transmission Systems

Online Location of Faults on AC Cables in Underground Transmission Systems

Locating Faults on Untransposed, Meshed Transmission Networks Using a Limited Number of Synchrophasor Measurements

Marine Power Distribution System Fault Location Using a Portable Injection Unit

Contact Info

Product

Resources

About