Abstract
We already reported that a combination of frequency domain reflectometry (FDR) and inverse fast-Fourier transform (IFFT) is a powerful tool for locating the position where an abnormality or degradation occurs in a cable up to a length of around 1,000 m. In our previous research, we always set a single spot of abnormality. This paper shows that this method is also applicable if abnormalities occur simultaneously at more than one spot. A coaxial cable of 31.5 m, insulated with low-density polyethylene, was heated at two different positions using two heating chambers. Each heated portion was about 47 cm long. The portion closer to the measurement terminal was heated to various temperatures up to 100°C, while the other portion was heated to 100 °C. As a result, it was confirmed that the two portions can be located if the temperature of the heated spot is 10°C higher than the surroundings when the highest measurement frequency is above 800 MHz.
| Original language | English |
|---|---|
| Title of host publication | 2018 Condition Monitoring and Diagnosis, CMD 2018 - Proceedings |
| Editors | Ahmed Abu-Siada |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781538641262 |
| DOIs | |
| Publication status | Published - 2018 Nov 14 |
| Event | 7th International Conference on Condition Monitoring and Diagnosis, CMD 2018 - Perth, Australia Duration: 2018 Sept 23 → 2018 Sept 26 |
Other
| Other | 7th International Conference on Condition Monitoring and Diagnosis, CMD 2018 |
|---|---|
| Country/Territory | Australia |
| City | Perth |
| Period | 18/9/23 → 18/9/26 |
Keywords
- Aging monitoring
- Fourier transform
- location
- polymer-insulated cable
- thermal degradation
ASJC Scopus subject areas
- Computer Networks and Communications
- Signal Processing
- Energy Engineering and Power Technology
- Safety, Risk, Reliability and Quality