Offline fault localization technique on HVDC submarine cable via time–frequency domain reflectometry

GY Kwon, CK Lee, GS Lee, YH Lee… - … on Power Delivery, 2017 - ieeexplore.ieee.org
Fault localization is one of the most significant aspects in the maintenance of high-voltage
direct current (HVdc) submarine cables that have unconventional installation characteristics …

Fault detection and localization of shielded cable via optimal detection of time–frequency-domain reflectometry

H Lim, GY Kwon, YJ Shin - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In recent years, as reliance on factory automation increases, real-time surveillance
techniques for electrical systems have received substantial attention. In particular, the fault …

Diagnosis of shielded cable faults via regression-based reflectometry

GY Kwon, CK Lee, YJ Shin - IEEE Transactions on Industrial …, 2018 - ieeexplore.ieee.org
Fault diagnosis has been studied actively across the electrical industry to help maintain the
stability of electrical equipment. Among this equipment, shielded cables, which are widely …

Wire mismatch detection using a convolutional neural network and fault localization based on time–frequency-domain reflectometry

SJ Chang, JB Park - IEEE Transactions on Industrial …, 2018 - ieeexplore.ieee.org
In addition to diagnosing a wiring of the vehicle in operation, it is also very important to find
wire mismatches during the assembly process. In this paper, we propose a new method …

Real-time condition monitoring of LOCA via time–frequency domain reflectometry

CK Lee, GY Kwon, SJ Chang, MK Jung… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
The maintenance of control and instrumentation (C&I) cables is crucial to safety of operating
nuclear power plants. Therefore, when an accident occurs, there is a need for an accurate …

Anomaly detection for shielded cable including cable joint using a deep learning approach

SJ Chang, GY Kwon - IEEE Transactions on Instrumentation …, 2023 - ieeexplore.ieee.org
A defect occurring in cable joints is much more severe than a defect on cables due to its high
incidence and an intensive electrical stress. In conventional reflectometry, it is hard to …

Time-Frequency Domain Monitoring Method for the Fault of HTS HVDC Systems Based on AI Classifiers

YS Sim, SJ Chang - IEEE Transactions on Applied …, 2023 - ieeexplore.ieee.org
Since high-temperature superconductor (HTS) based HVDC systems are affected by
temperature and cooling system performance, noise, the monitoring system which can …

Detection and assessment of I&C cable faults using time–frequency R-CNN-based reflectometry

CK Lee, YJ Shin - IEEE transactions on Industrial Electronics, 2020 - ieeexplore.ieee.org
In this article, we propose a fault detection and assessment technique for instrumentation
and control cables based on time-frequency image classification using the faster region …

Fault detection in multi-core C&I cable via machine learning based time-frequency domain reflectometry

CK Lee, SJ Chang - Applied Sciences, 2019 - mdpi.com
The integrity and functionality of the control and instrumentation (C&I) cable systems are
essential when it comes to ensuring the reliability and safety of system operations …

Application of enhanced optimal-detection of time–frequency domain reflectometry on HTS cable with high-resolution

H Lim, YH Lee, SS Bang, YJ Shin - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Time–frequency domain reflectometry (TFDR) has been used for sensing various types of
cables including high temperature superconducting (HTS) cables. Recently, the optimal …