Location strategies and evaluation of detection algorithms for earth faults in compensated MV distribution systems

Welfonder, T.; Leitloff, V.; Fenillet, R.; Vitet, S.

doi:10.1109/61.891492

Cited by 84 publications

(32 citation statements)

References 4 publications

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“…After analysing all the results from 200 simulated events in MATLAB, a set of rules for an algorithm of HIF detection and differentiation from normal switching condition was established [17,18]. U phtogr is phase to ground voltage, I phtogr is phase to ground current, 3·I 0 refers to zero sequence line current, harmonics refer to first, third, fifth and seventh harmonic of the zero sequence current.…”

Section: Discussionmentioning

confidence: 99%

An improved method for high impedance fault detection in medium voltage networks

Ravlić¹,

Marušić

Havelka

2017

Teh. vjesn.

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Original scientific paper This paper presents a set of rules for an intelligent algorithm of high impedance fault detection by observing the phase to ground voltage, phase to phase current and harmonics of fault current. Several techniques to detect high impedance faults already exist for example current injection in the neutral, superposing voltage signals, harmonic analysis, neural networks. The main disadvantage of all methods is that the normal system activity may cause false tripping of the protection device. Our goal is to give a set of rules for an algorithm that can make a secure decision that a particular feeder event is high impedance fault. The set of rules was carried out from simulation results simulated in MATLAB. The proposed approach was trained and tested with 200 data sets and provides excellent results. Keywords: fault detection; Fourier transform; high impedance fault; medium voltage network Unaprijeđena metoda detekcije visokoomskih kvarova u mrežama srednjeg naponaIzvorni znanstveni članak Ovim člankom predstavljen je skup pravila za inteligentni algoritam detekcije visokoomskih kvarova promatranjem faznih napona i struja, kao i harmonika struje kvara. Nekoliko metoda detekcije visokoomskih kvarova već postoji kao što su npr. injektiranje struje, superpozicija signala napona, harmonička analiza, neuronske mreže. Glavni nedostatak svih postojećih metoda detekcije visokoomskih kvarova leži u tome da zaštitni uređaji prepoznaju normalne sklopne operacije u mreži kao visokoosmski kvar (neželjena prorada zaštitnih uređaja). Cilj istraživanja bio je postaviti skup pravila za inteligentni algoritam koji može donijeti sigurnu odluku da li je do kvara došlo ili ne. Navedeni skup pravila je dobiven na temelju rezultata simulacijskog modela razvijenog u programskom paketu MATLAB. Navedeni pristup je ispitan s 200 skupova ulaznih podataka te daje odlične rezultate.

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Section: Discussionmentioning

confidence: 99%

An improved method for high impedance fault detection in medium voltage networks

Ravlić¹,

Marušić

Havelka

2017

Teh. vjesn.

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“…This can be achieved either by comparing signs of projections of zerosequence currents (Griffel et al, 1997;Welfonder et al, 2000) or looking for phase advance (Bastard et al, 1992;Segui et al, 2001) of the faulty zero-sequence current over the sound ones. However, in steady state the strong capacitive currents diminish this phase advance, with possible inhibition of the discrimination capacities of relays.…”

Section: Introductionmentioning

confidence: 99%

“…Then the way to reestablish these capacities is to exploit data recorded in transient regime, where the apparent phase difference is more important than in the steady state. Similarly, some difficulties can arise with estimation of fault distance in strongly capacitive systems by exploiting the "main frequency" of charging components (Coemans et al, 1993), or by using the "resonance frequency" of the system (Welfonder et al, 2000), with aid of full zero-positive-negative sequence equation set. The delicate problem of identification and extraction of the main frequency can be spared when the complete transient waveform is analyzed (Huang & Kaczmarek, 2008), rather than only one of its components.…”

Section: Introductionmentioning

confidence: 99%

Single Line-to-Ground Fault Detection in Face of Cable Proliferation in Compensated Systems

Huang¹,

Kaczmarek²,

Vannier³

2010

Fault Detection

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“…Hybrid grounding was proposed for low and medium voltage systems [17]. In [18][19][20][21], the authors analyzed various types of neutral grounding. In [22,23], the authors examined the voltage and current behaviour under fault condition for various parameters of systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of Neutral Grounding Protection Methods for Compensated Wind/PV Grid-Connected Hybrid Power Systems

Çetinkaya

Umer

2017

International Journal of Photoenergy

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The effects of the wind/PV grid-connected system (GCS) can be categorized as technical, environmental, and economic impacts. It has a vital impact for improving the voltage in the power systems; however, it has some negative effects such as interfacing and fault clearing. This paper discusses different grounding methods for fault protection of High-voltage (HV) power systems. Influences of these grounding methods for various fault characteristics on wind/PV GCSs are discussed. Simulation models are implemented in the Alternative Transient Program (ATP) version of the Electromagnetic Transient Program (EMTP). The models allow for different fault factors and grounding methods. Results are obtained to evaluate the impact of each grounding method on the 3-phase short-circuit fault (SCF), double-line-to-ground (DLG) fault, and single-line-to-ground (SLG) fault features. Solid, resistance, and Petersen coil grounding are compared for different faults on wind/PV GCSs. Transient overcurrent and overvoltage waveforms are used to describe the fault case. This paper is intended as a guide to engineers in selecting adequate grounding and ground fault protection schemes for HV, for evaluating existing wind/PV GCSs to minimize the damage of the system components from faults. This research presents the contribution of wind/PV generators and their comparison with the conventional system alone.

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Location strategies and evaluation of detection algorithms for earth faults in compensated MV distribution systems

Cited by 84 publications

References 4 publications

An improved method for high impedance fault detection in medium voltage networks

An improved method for high impedance fault detection in medium voltage networks

Single Line-to-Ground Fault Detection in Face of Cable Proliferation in Compensated Systems

Effect of Neutral Grounding Protection Methods for Compensated Wind/PV Grid-Connected Hybrid Power Systems

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