A Fault Line Selection Method for Small Current Grounding Systems Based on Zero-Mode Transient Information

Zhou, Yun; Zhang, Jia; Bao, Yu; Ma, Haiwei; Lin, Wenxiong; Zhu, Jiangyu

doi:10.1109/ciced56215.2022.9928809

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Cited by 3 publications

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Design of Small Current Grounding Fault Line Selection System

Li,

Huang,

et al. 2023

2023 3rd International Conference on Energy Engineering and Power Systems (EEPS)

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Design of Small Current Grounding Fault Line Selection System

Li,

Huang,

et al. 2023

2023 3rd International Conference on Energy Engineering and Power Systems (EEPS)

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A Method for Fault Line Selection of Small Current Grounding System Based on MEEMD and FCM

Zhang,

Zhou,

Ding

et al. 2023

2023 International Conference on Power System Technology (PowerCon)

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Fault Handling and Localization Strategy Based on Waveform Characteristics Recognition with Coordination of Peterson Coil and Resistance Grounding Method

Li,

Cao,

Chen

et al. 2024

Energies

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To address challenges in locating high-impedance grounding faults (HIGFs) and isolating fault areas in resonant grounding systems, this paper proposes a novel fault identification method based on coordinating a Peterson coil and a resistance grounding system. This method ensures power supply reliability by extinguishing the fault arc during transient faults with the Peterson coil. When a fault is determined to be permanent, the neutral point switches to a resistance grounding mode, ensuring regular distribution of zero-sequence currents in the network, thereby addressing the challenges of HIGF localization and fault area isolation. Fault calibration and nature determination rely on recognizing neutral point displacement voltage waveforms and dynamic characteristics, eliminating interference from asymmetric phase voltage variations. Fault area identification involves assessing the polarity of zero-sequence current waveforms attenuation during grounding mode switching, preventing misjudgments in grounding protection due to random initial fault angles and Peterson coil compensation states. Field experiments validate the feasibility of this fault location method and its control strategy.

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A Fault Line Selection Method for Small Current Grounding Systems Based on Zero-Mode Transient Information

Cited by 3 publications

References 7 publications

Design of Small Current Grounding Fault Line Selection System

Design of Small Current Grounding Fault Line Selection System

A Method for Fault Line Selection of Small Current Grounding System Based on MEEMD and FCM

Fault Handling and Localization Strategy Based on Waveform Characteristics Recognition with Coordination of Peterson Coil and Resistance Grounding Method

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