Electrical and mechanical diagnosis of aging 600 V rated STP cables in a nuclear power plant

Kim, Kwang‐Ho; Shin, Jaeseung; Kim, Byung‐Sung; Nah, Wansoo; Lim, Chanwoo; Jaturapitakkul, Chai

doi:10.1109/tdei.2017.005640

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…It is well known that most of the aging effect of a solenoid comes from dielectric degradation, which leads to an increase of permittivity, loss tangent, and leakage current [24][25][26][27]. The exact measurement of a loss tangent and a leakage current, however, usually requires the rated voltage and current at the nominal condition, and the rated voltage and current are large in amplitude, which could damage the electrical device.…”

Section: Setup For Mimicking Degraded Insulator In the Prototype Solenoidmentioning

confidence: 99%

Quantitative Analysis of Insulator Degradation in a Single Layer Solenoid by Renormalization of the Transmission Parameter

et al. 2020

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In this paper, a novel method to quantitatively analyze insulator degradation in a single layer solenoid is proposed. The suggested method employs renormalization of scattering parameters to efficiently detect changes of permittivity in a degraded solenoid. Firstly, a transmission line model, including a locally degraded part in the insulator, was developed, and it was determined that the phase information of the transmission parameter was very informative to check the permittivity change in the transmission line. To check the workability of this idea in a solenoid, a 30-turn single-layer solenoid was designed and fabricated, and 51 degraded states for mimicking insulation deterioration in each turn were introduced by installing additional insulator rings, which increased local relative permittivity. The phase data of the measured transmission parameter turned out to be useful for quantifying changes of the insulator in the solenoid. To maximize the detectability, the measured scattering parameters were renormalized with different reference impedances, which was very useful for detecting degradation in the transmission parameter. In this paper, detailed procedures for quantitatively analyzing degradation of an insulator are proposed and we verify that the suggested renormalization technique is very promising for effectively evaluating the degradation of a solenoid.

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Section: Setup For Mimicking Degraded Insulator In the Prototype Solenoidmentioning

confidence: 99%

Quantitative Analysis of Insulator Degradation in a Single Layer Solenoid by Renormalization of the Transmission Parameter

et al. 2020

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Sensors Selection for Distributed Reflectometry-based Soft Fault Detection using Principal Component Analysis

Taki

Hassen

Ravot

et al. 2019

2019 Ieee Autotestcon

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Defects Location for DC Submarine Cables in Burnin Period Using Admittance Spectrum Characteristics

Wei

Zhang

2022

IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society

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Electrical and mechanical diagnosis of aging 600 V rated STP cables in a nuclear power plant

Cited by 6 publications

References 8 publications

Quantitative Analysis of Insulator Degradation in a Single Layer Solenoid by Renormalization of the Transmission Parameter

Quantitative Analysis of Insulator Degradation in a Single Layer Solenoid by Renormalization of the Transmission Parameter

Sensors Selection for Distributed Reflectometry-based Soft Fault Detection using Principal Component Analysis

Defects Location for DC Submarine Cables in Burnin Period Using Admittance Spectrum Characteristics

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