Zero Sequence Admittance based Fault Location in Low Resistance Grounding Distribution System

Xue, Jingrun; Shi, Fang; Zhang, Hengxu; Liu, Shu; Fang, Chen

doi:10.1109/ei2.2018.8582332

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Generally, the ground capacitance current of feeders in the distribution network system will not exceed 50 A [28] , that is, ωC 0k <0.002 9 S. If R 0k =2.7 Ω, and the range of the value of S 0k is expanded further, the compound power of normal lines meets…”

Section: High Resistance Grounding Fault Identification Of Small Resi...mentioning

confidence: 99%

Novel self-adjusted full-line current protection strategy for small resistance grounding distribution network

Yan,

Ao,

Liu

et al. 2024

Chin. J. Electr. Eng.

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The existing current break protection cannot achieve full-line current protection and may lose its protection capability.Therefore, this study proposes a self-adjusted full-line current protection strategy based on a double-layer criterion. The first layer of the criterion adopts the adaptive adjustment threshold as the setting value to realize full-line fault monitoring, which is not affected by the system operation mode and fault type. The second layer is used to locate the fault section of the line and improve the selectivity of the protection strategy. Considering the difficulty in accurately identifying high-resistance ground faults using current protection, an identification method based on compound power is proposed by analyzing the zero-sequence network of the system. Simulation results show that the proposed protection strategy can realize full-length line protection and the effective identification of high-resistance ground faults and is not affected by the system load variation and fault type.

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Section: High Resistance Grounding Fault Identification Of Small Resi...mentioning

confidence: 99%

Novel self-adjusted full-line current protection strategy for small resistance grounding distribution network

Yan,

Ao,

Liu

et al. 2024

Chin. J. Electr. Eng.

View full text Add to dashboard Cite

show abstract

Single-phase Grounding Fault Detection Method in Resonant Grounding System Based on Phase Current Variation

Wu,

Zheng,

Yang

et al. 2023

2023 2nd Asia Power and Electrical Technology Conference (APET)

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Zero Sequence Admittance based Fault Location in Low Resistance Grounding Distribution System

Cited by 2 publications

References 5 publications

Novel self-adjusted full-line current protection strategy for small resistance grounding distribution network

Novel self-adjusted full-line current protection strategy for small resistance grounding distribution network

Single-phase Grounding Fault Detection Method in Resonant Grounding System Based on Phase Current Variation

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