Summary
Time-frequency domain reflectometry method using Gaussian enveloped linear chirp signal is used to detect and to locate the hot spot in nuclear control and instrumentation cable. The reference signal designed to fit for the characteristic of target cable is applied to target cable including hot spot which is simulated in heating chamber. Using the Wigner distribution, the reflected signal from the hot spot is analyzed in time-frequency domain. To estimate the hot spot location, the time-frequency cross correlation is applied to control and instrumentation cable. The experiment, considering insulation properties in thermal environment, are performed on three types of cables depending on insulation (EPR, HFI, FTFE). To detect the hot spot in target cable, the additional experiment which is applied to DC power source is carried out. Through the experiment, the performance of the proposed time-frequency domain reflectometry system is verified.
Additional informations
| Publication type | ISH Collection |
|---|---|
| Reference | ISH2015_579 |
| Publication year | 2015 |
| Publisher | ISH |
| File size | 578 KB |
| Price for non member | Free |
| Price for member | Free |
Authors
Chang Seung Jin, Suchantke Rene, Waschk Volker, Castro Malone Soares, Freire Raimundo Carlos Silverio, Gonçalves Marconni Freitas , Lima José de Ribamar, Selvaraj Daisy Flora, Jagannathan Sundara Rajan
