What question did this study set out to answer?

To develop a nonintrusive online fault diagnosis method for detecting and classifying short-circuit faults in three-core power distribution cables without disconnecting them from the grid.

August 3, 2023IEEE Sensors Journal

Online Short-Circuit Fault Diagnosis in Three-Core Power Distribution Cable Based on Magnetic Pattern

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Authors

JLJingyi LiuQingdao University CLChi-Kwan LeeUniversity of Technology Sydney PPPhilip W. T. PongNew Jersey Institute of Technology

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Implication

Experimental evaluation demonstrates rapid short-circuit fault diagnosis in three-core distribution cables, highlighting nonintrusive online power grid monitoring.

Key Points

To develop a nonintrusive online fault diagnosis method for detecting and classifying short-circuit faults in three-core power distribution cables without disconnecting them from the grid.
Measured tangential magnetic fields across the cable surface to reconstruct geometric magnetic patterns under normal and faulted states.
Applied a cumulative sum-based detection algorithm to identify rapid alterations in magnetic pattern radius.
Evaluated diagnostic robustness across load variations, homogeneous components, and cable structures via both numerical simulation and experimental testing.
Normal operation produced a symmetrical circular magnetic pattern, whereas distinct short-circuit faults generated unique geometric pattern signatures.
Fault-induced shifts in magnetic pattern radius were successfully identified within five sampling intervals using the cumulative sum algorithm.
Simulation and experimental models confirmed diagnostic accuracy despite fluctuations in load and varying cable configurations.

Cite This Study

Liu et al. (2023) studied this question.

synapsesocial.com/papers/6a7de797f980e8364118803c https://doi.org/10.1109/jsen.2023.3300126

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Implication

Experimental evaluation demonstrates rapid short-circuit fault diagnosis in three-core distribution cables, highlighting nonintrusive online power grid monitoring.

Online Short-Circuit Fault Diagnosis in Three-Core Power Distribution Cable Based on Magnetic Pattern

Discussion

Member takes

Implication

Key Points

Cite This Study

Online Short-Circuit Fault Diagnosis in Three-Core Power Distribution Cable Based on Magnetic Pattern

Discussion

Member takes

Implication

Key Points

Cite This Study

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