Practical experience of using additional earthing of the faulty phase during a ground fault

Topolánek, David; Orságová, Jaroslava; Toman, Petr; Dvořák, Jaromír

doi:10.1109/ptc.2013.6652291

Cited by 6 publications

(5 citation statements)

References 4 publications

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“…The crucial factor affecting the affectivity of an EF current reduction by FPE is ratio of fault circuit impedance and shunt loop impedance (impedance between faulty phase and earth). Just the ratio of these impedances has significant impact to ability of FPE to reduce an EF current as it is described in [3,8].…”

Section: Ef Current Reduction (Fundamental Component)mentioning

confidence: 99%

“…It can cause significant increase of an EF current and thus deterioration of touch or step voltage levels around faulted area. This phenomenon can occur only during low-impedance EF at heavily loaded areas of distribution network, the issue is in detail discussed in the contributions [3,8]. low-impedance earthing of faulty phase, the phase voltage of healthy phases is increased up to L-L operation voltage at least regardless of value of an EF resistance.…”

Section: Load Transmission Through Ef Pointmentioning

confidence: 99%

“…1). The detailed description of the method can be found in [1][2][3][4][5][6][7][8]. There is no doubt that the method yields positive results in case of resistive earth faults that represent a vast majority of all earth faults in MV distribution networks.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of different solutions of faulted phase earthing technique for an earth fault current limitation

Topolánek¹,

Dvořák²,

Toman³

et al. 2017

CIRED - Open Access Proceedings Journal

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The study is focused on evaluation of different types of prototypes of automatics for additional faulted phase earthing (FPE), which are used for earth fault (EF) current reduction in resonant earthed distribution network. Three prototypes of these automatics have been installed in Czech distribution network, the first one utilises direct connection of faulty phase-to-earthing system of supply substation, the second one utilises connection through resistor and the last one through reactor. The contribution is mainly focused on detail analysis of operational differences of these types of FPE systems based on case study of compensated distribution network. The main aim is to specify and describe benefits and disadvantages of individual FPE applications. The results could be used for evaluation of best solution of FPE application which could be chosen for an EF current reduction in compensated distribution network.

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Section: Ef Current Reduction (Fundamental Component)mentioning

confidence: 99%

Section: Load Transmission Through Ef Pointmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of different solutions of faulted phase earthing technique for an earth fault current limitation

Topolánek¹,

Dvořák²,

Toman³

et al. 2017

CIRED - Open Access Proceedings Journal

Self Cite

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“…Nevertheless, they fail to consider the influence of line impedance voltage drop. In scenarios where a low-resistance grounding fault occurs at the end of a heavy-duty long line, the fault current may increase, and the arc suppression effect for metallic grounding faults may be limited [18]. Iterative adjustment of the neutral point voltage reference by the phase relationship of the fault current and the fault phase voltage to reduce the effect of the line impedance voltage drop was proposed in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The specific compensation scheme of the ground fault harmonic current is not provided in Refs [12][13][14][15][16][17][18][19][20][21]. The compensation of fault harmonic currents by measuring and tracking the zero-sequence harmonic currents of the faulted feeder was proposed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Flexible composite suppression method for ground arc in resonant grounding system

et al. 2023

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A current‐voltage composite controller for an arc suppression inverter is designed. The current and voltage at the fault point are reduced by injecting current and regulating the neutral point voltage to completely eliminate the risk of fire and overvoltage caused by a single‐line‐to‐ground fault arc. A cascaded inverter is used, and the effects of the ground parameter measurement, line impedance voltage drop, harmonic current and arc suppression coil on the current control, voltage control and composite control methods are analysed and compared. Finally, software simulations and industrial prototype experiments show that the proposed composite control method is effective and less affected by ground parameter measurement and line impedance voltage drop and has better adaptability.

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Ground faults simulation model in comparison with performed experiments

Wasserbauer

Bajanek

Orságová

et al. 2015

2015 16th International Scientific Conference on Electric Power Engineering (EPE)

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Practical experience of using additional earthing of the faulty phase during a ground fault

Cited by 6 publications

References 4 publications

Evaluation of different solutions of faulted phase earthing technique for an earth fault current limitation

Evaluation of different solutions of faulted phase earthing technique for an earth fault current limitation

Flexible composite suppression method for ground arc in resonant grounding system

Ground faults simulation model in comparison with performed experiments

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