Practical computation of di/dt for high-speed protection of DC microgrids

Chunpeng Li; Puran Rakhra; Patrick Norman; Pawel Niewczas; Graeme Burt; Paul Clarkson

doi:10.1109/ICDCM.2017.8001037

Practical computation of di/dt for high-speed protection of DC microgrids

Chunpeng Li, Puran Rakhra, Patrick Norman, Pawel Niewczas, Graeme Burt, Paul Clarkson

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

12 Citations (Scopus)

308 Downloads (Pure)

Abstract

DC microgrids have the potential to radically disrupt the distribution system market due to the benefits offered in easing the integration and control of distributed renewable energy resources and energy storage systems. However, the nonzero-crossing fault current profiles associated with short-circuited
DC systems present a major challenge for protection. Isolation of faulted networks prior to the peak-current discharge of DC side capacitors may address this challenge if rapid fault detection speeds (shorter than 2ms) can be achieved. Accordingly, novel methods of utilizing the rate-of-change-of-current (di/dt) have been proposed in the literature to realize new, high-speed distance protection strategies. This paper proposes two practical methods for optimizing the numerical computation of di/dt of fault current transients and evaluates the performance of each within a MATLAB/Simulink model of a DC microgrid with artificially injected measurement noise.

Original language	English
Title of host publication	2017 Second IEEE International Conference on DC Microgrids (ICDCM)
Place of Publication	Piscataway, NJ
Publisher	IEEE
Number of pages	7
ISBN (Print)	9781509044795
DOIs	https://doi.org/10.1109/ICDCM.2017.8001037
Publication status	Published - 7 Aug 2017

Keywords

DC microgrids
power system measurements
digital signal processing
power system protection

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10.1109/ICDCM.2017.8001037

Li-etal-IEEE-ICDCM-2017-Practical-computation-of-di-dt-for-high-speedAccepted author manuscript, 1.52 MB

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title = "Practical computation of di/dt for high-speed protection of DC microgrids",

abstract = "DC microgrids have the potential to radically disrupt the distribution system market due to the benefits offered in easing the integration and control of distributed renewable energy resources and energy storage systems. However, the nonzero-crossing fault current profiles associated with short-circuitedDC systems present a major challenge for protection. Isolation of faulted networks prior to the peak-current discharge of DC side capacitors may address this challenge if rapid fault detection speeds (shorter than 2ms) can be achieved. Accordingly, novel methods of utilizing the rate-of-change-of-current (di/dt) have been proposed in the literature to realize new, high-speed distance protection strategies. This paper proposes two practical methods for optimizing the numerical computation of di/dt of fault current transients and evaluates the performance of each within a MATLAB/Simulink model of a DC microgrid with artificially injected measurement noise.",

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AU - Li, Chunpeng

AU - Rakhra, Puran

AU - Norman, Patrick

AU - Niewczas, Pawel

AU - Burt, Graeme

AU - Clarkson, Paul

N1 - (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2017/8/7

Y1 - 2017/8/7

N2 - DC microgrids have the potential to radically disrupt the distribution system market due to the benefits offered in easing the integration and control of distributed renewable energy resources and energy storage systems. However, the nonzero-crossing fault current profiles associated with short-circuitedDC systems present a major challenge for protection. Isolation of faulted networks prior to the peak-current discharge of DC side capacitors may address this challenge if rapid fault detection speeds (shorter than 2ms) can be achieved. Accordingly, novel methods of utilizing the rate-of-change-of-current (di/dt) have been proposed in the literature to realize new, high-speed distance protection strategies. This paper proposes two practical methods for optimizing the numerical computation of di/dt of fault current transients and evaluates the performance of each within a MATLAB/Simulink model of a DC microgrid with artificially injected measurement noise.

AB - DC microgrids have the potential to radically disrupt the distribution system market due to the benefits offered in easing the integration and control of distributed renewable energy resources and energy storage systems. However, the nonzero-crossing fault current profiles associated with short-circuitedDC systems present a major challenge for protection. Isolation of faulted networks prior to the peak-current discharge of DC side capacitors may address this challenge if rapid fault detection speeds (shorter than 2ms) can be achieved. Accordingly, novel methods of utilizing the rate-of-change-of-current (di/dt) have been proposed in the literature to realize new, high-speed distance protection strategies. This paper proposes two practical methods for optimizing the numerical computation of di/dt of fault current transients and evaluates the performance of each within a MATLAB/Simulink model of a DC microgrid with artificially injected measurement noise.

KW - DC microgrids

KW - power system measurements

KW - digital signal processing

KW - power system protection

UR - http://www.icdcm.co/

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DO - 10.1109/ICDCM.2017.8001037

M3 - Conference contribution book

SN - 9781509044795

BT - 2017 Second IEEE International Conference on DC Microgrids (ICDCM)

PB - IEEE

CY - Piscataway, NJ

ER -

Practical computation of di/dt for high-speed protection of DC microgrids

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Keywords

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