Condition Assessment of IC Cables in Nuclear Power Plants via Stepped-Frequency Waveform Reflectometry

Chun Kwon Lee, Gu Young Kwon, Yong June Shin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A nuclear power plant (NPP) depends on instrumentation and control (IC) systems to ensure its safe and efficient operation. In particular, IC cables take on the pivotal role of measuring and controlling the critical equipment of the NPP. Thus, it is indubitable that the diagnostic technology of IC cables for detecting faults and accurately assessing their health status is required for ensuring the safety and reliability of the NPP operation. We propose a diagnostic method that combines fault detection and evaluation algorithm for the IC cables with stepped-frequency waveform reflectometry with signal propagation and reflection modeling. The signal modeling allows the assessment of the fault with an estimated reflection coefficient by separating the propagation and reflection effects of the measured signal. In short, cable faults are differentiated and quantified regardless of distance. The proposed algorithm is verified by characteristic impedance measurement, various fault detection/evaluation experiments, and the fault evaluation of local accelerated thermal aging cable.

Original languageEnglish
Article number8376103
Pages (from-to)215-224
Number of pages10
JournalIEEE Transactions on Instrumentation and Measurement
Volume68
Issue number1
DOIs
Publication statusPublished - 2019 Jan

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nuclear power plants
cables
Nuclear power plants
waveforms
Cables
fault detection
Fault detection
evaluation
Thermal aging
propagation
impedance measurement
Wave propagation
health
safety
Health
reflectance
Control systems
Experiments

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

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abstract = "A nuclear power plant (NPP) depends on instrumentation and control (IC) systems to ensure its safe and efficient operation. In particular, IC cables take on the pivotal role of measuring and controlling the critical equipment of the NPP. Thus, it is indubitable that the diagnostic technology of IC cables for detecting faults and accurately assessing their health status is required for ensuring the safety and reliability of the NPP operation. We propose a diagnostic method that combines fault detection and evaluation algorithm for the IC cables with stepped-frequency waveform reflectometry with signal propagation and reflection modeling. The signal modeling allows the assessment of the fault with an estimated reflection coefficient by separating the propagation and reflection effects of the measured signal. In short, cable faults are differentiated and quantified regardless of distance. The proposed algorithm is verified by characteristic impedance measurement, various fault detection/evaluation experiments, and the fault evaluation of local accelerated thermal aging cable.",
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Condition Assessment of IC Cables in Nuclear Power Plants via Stepped-Frequency Waveform Reflectometry. / Lee, Chun Kwon; Kwon, Gu Young; Shin, Yong June.

In: IEEE Transactions on Instrumentation and Measurement, Vol. 68, No. 1, 8376103, 01.2019, p. 215-224.

Research output: Contribution to journalArticle

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