An Improved Scheme for Flexible Grounding Fault Suppression in Distribution System Based On IGBT

Ran, Jing Yu; Yang, Qing; Chen, S.; He, Lipeng

doi:10.1109/ichve.2018.8642006

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Peterson coil is a current arc suppression method which is the most common neutral grounding method for the medium voltage distribution network [5,6]. However, Peterson coil cannot compensate harmonic and active components of the fault current.…”

Section: Introductionmentioning

confidence: 99%

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Fan

Wang

et al. 2021

IET Power Electronics

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In the non‐effectively grounding distribution system, residual current under single‐line‐to‐ground (SLG) fault threatens the safety of human being and power supply equipment. Active arc suppression device has been proved to be effective for SLG fault arc suppression when the line impedance is ignored. However, in practice, line impedance varies with the fault location and the load current flowing through the impedance brings about additional voltage drop, which increases the fault current and is not dealt with by the conventional methods. To achieve accurate SLG fault arc suppression with the existence of line impedance, the neutral‐to‐ground voltage reference for full ground‐fault current compensation is firstly derived and a detection method is then proposed. The pre‐fault and post‐fault line currents are used to eliminate the influence of load current on the line impedance voltage drop. A dual‐loop voltage and current controller is then designed. The prototype of active arc suppression device was developed. The results of simulation and prototype experiment validate the effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Fan

Wang

et al. 2021

IET Power Electronics

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“…Because if the distribution network is dominated by overhead lines and the number of grounding faults is frequent, the annual trip rate will be significantly increased by adopting small resistance grounding mode [10]. The small current grounding method compensated by arc suppression coil can equalize the fault current [11], which makes the grounding arc easy to extinguish. In practical application, the problem of arc suppression coil is also very prominent: the traditional arc suppression coil can not compensate the harmonic and high frequency components in the residual current of the fault, which makes it difficult for the arc to extinguish itself and realize arc suppression in single-phase grounding fault.…”

Section: Introductionmentioning

confidence: 99%

Research on Single-Phase to Ground Fault Simulation Base on a New Type Neutral Point Flexible Grounding Mode

et al. 2019

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There are some problems existing in the traditional grounding mode of the distribution network. To solve them, this paper proposes a flexible grounding method for neutral point. This paper analyzes the advantages and the disadvantages of single-phase ground faults occurring at different neutral grounding points and summarizes the characteristics of several existing grounding arc elimination technologies for distribution networks. Depending on the actual data of a 10-kV substation, the ATP-EMTP was used to build a 10-kV distribution network model, and an arc model based on arc length control was used for single-phase ground fault simulation. According to the simulation results, it was known that the overhead line network of arc suppression coils was compared. Permanent ground faults occur in pure cable networks which are grounded by small resistances. Flexible grounding systems have significant benefits in suppressing the inrush currents at fault points when an intermittent arc single-phase-to-ground fault occurs, the flexible grounding system causes intermittent arcing. The voltage is clearly inhibited. The flexible grounding method has certain reference value for improving the reliability of distribution network power supply and providing the safe operation of the system. INDEX TERMS Flexible grounding, arc suppression coil, ineffective grounding system, arc ground overvoltage.

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Advances on fault detection techniques for resonant grounded power distribution networks in bushfire prone areas: Identification of faulty feeders, faulty phases, faulty sections, and fault locations

Pirmani

Mahmud

2023

Electric Power Systems Research

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An Improved Scheme for Flexible Grounding Fault Suppression in Distribution System Based On IGBT

Cited by 5 publications

References 8 publications

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Active arc suppression device based on voltage‐source convertor with consideration of line impedance in distribution networks

Research on Single-Phase to Ground Fault Simulation Base on a New Type Neutral Point Flexible Grounding Mode

Advances on fault detection techniques for resonant grounded power distribution networks in bushfire prone areas: Identification of faulty feeders, faulty phases, faulty sections, and fault locations

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