Transients computation for relay testing in real-time

Kezunovic, Mladen; Aganagic, M.; Skendžić, V.; Domaszewicz, J.; Bladow, J.K.; Hamai, D.; McKenna, S.M.

doi:10.1109/61.311156

Cited by 60 publications

(11 citation statements)

References 14 publications

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“…Fault location algorithms based on the analysis of the faultoriginated EM transients are often tested by using the results of numerical simulations carried out by means of electromagnetic transient programs (EMTP) [19] able to accurately represent the propagation phenomena that takes place in line feeders (e.g., [20], [21]). …”

Section: Reduced-scale Experimental Setupmentioning

confidence: 99%

Integrated Use of Time-Frequency Wavelet Decompositions for Fault Location in Distribution Networks: Theory and Experimental Validation

Borghetti

Bosetti

Nucci

et al. 2010

IEEE Trans. Power Delivery

203

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Abstract-The paper presents a procedure for fault location in distribution networks, based on the use of the integrated time-frequency wavelet decompositions of the voltage transients associated with the fault-originated travelling waves. The proposed analysis of time-frequency wavelet decompositions has been found to improve the identification accuracy of the frequencies associated to the characteristic patterns of a fault location with respect to a sole frequency-domain wavelet analysis. Several laboratory fault tests, carried out by means of a reduced-scale model of a distribution feeder, are used to illustrate the characteristics and assess the performances of the proposed improved procedure. The paper also illustrates the application of the proposed procedure to a transient, originated by a permanent phase-to-phase fault, measured in a real distribution network in which a post-test analysis has identified the faulted branch.

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Section: Reduced-scale Experimental Setupmentioning

confidence: 99%

Integrated Use of Time-Frequency Wavelet Decompositions for Fault Location in Distribution Networks: Theory and Experimental Validation

Borghetti

Bosetti

Nucci

et al. 2010

IEEE Trans. Power Delivery

203

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“…This technique is useful during the early stages of design in order to analyse distinct components rather than a complex system in its entirety. The models are usually implemented on high end, in terms of computational power, PCs [2].…”

Section: Overview Of Simulation Techniquesmentioning

confidence: 99%

“…The connection to the rest of the network is achieved by a step-down transformer. Its operating principle is based on the controllable voltage of the VSC and the voltage drop at the reactor that dictates the reactive power absorption from or injection to the system as shown by (2). (2) Where V S is the voltage at the grid side of the coupling transformer and V c is the voltage at the VSC side of the transformer.…”

Section: Model Theoritical Descriptionmentioning

confidence: 99%

Scalable real-time controller hardware-in-the-loop testing for multiple interconnected converters

Avras

Roscoe

Burt

2014

2014 49th International Universities Power Engineering Conference (UPEC)

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This version is available at https://strathprints.strath.ac.uk/50072/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output.This paper is a postprint of a paper submitted to and accepted for publication at the UPEC 2014 conference and is subject to IEEE copyright. Abstract -This project is aiming to make the first steps in investigating and pushing the boundaries of real-time simulation. To that end it will focus on real-time representation of converter devices on different platforms, enabling the future coupling of prototyping controllers to power system simulation tools. The small time-step, high fidelity representation of the converter devices and the large time-step model of the grid will be carried out on RTDS Technologies, RTDS and perhaps expanding the attempt, on OPAL-RT Technologies, OPAL-RT Simulator in the future. The controller prototyping, including the converter switching strategy will be implemented on ADI's rtX and the use of other rapid controller prototyping systems will also be evaluated. This will effectively allow the exploration of the scalability and limits of such schemes. Namely, how many converters can be simulated on real-time simulation devices? How many controllers can be implemented on a prototyping platform using modern microprocessors?

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“…After almost a decade now, various research groups have been able to achieve real-time performance [9], [10], [11], [12]. The real-time research group of the University of British Columbia has been continuously advancing the concept of a full-size real-time power system simulator, which eventually resulted in the OVNI [13] power system simulator.…”

Section: Real-time Power System Simulationmentioning

confidence: 99%

Step-by-Step Eigenvalue Analysis With EMTP discrete-time Solutions

Hollman

Martí

2010

IEEE Trans. Power Syst.

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The present work introduces a methodology to obtain a discrete time state space representation of an electrical network using the nodal [G] matrix of the Electromagnetic Transients Program (EMTP) solution. This is the first time the connection between the EMTP nodal analysis solution and a corresponding state-space formulation is presented. Compared to conventional state space solutions, the nodal EMTP solution is computationally much more efficient. Compared to the phasor solutions used in transient stability analysis, the proposed approach captures a much wider range of eigenvalues and system operating states. A fundamental advantage of extracting the system eigenvalues directly from the EMTP solution is the ability of the EMTP to follow the characteristics of nonlinearities. The system's trajectory can be accurately traced and the calculated eigenvalues and eigenvectors correctly represent the system's instantaneous dynamics. In addition, the algorithm can be used as a tool to identify network partitioning subsystems suitable for real-time hybrid power system simulator environments, including the implementation of multi-time scale solutions. The proposed technique can be implemented as an extension to any EMTPbased simulator. Within our UBC research group, it is aimed at extending the capabilities of our real-time PC-cluster Object Virtual Network Integrator (OVNI) simulator.

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Transients computation for relay testing in real-time

Cited by 60 publications

References 14 publications

Integrated Use of Time-Frequency Wavelet Decompositions for Fault Location in Distribution Networks: Theory and Experimental Validation

Integrated Use of Time-Frequency Wavelet Decompositions for Fault Location in Distribution Networks: Theory and Experimental Validation

Scalable real-time controller hardware-in-the-loop testing for multiple interconnected converters

Step-by-Step Eigenvalue Analysis With EMTP discrete-time Solutions

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