Optical fiber sensor-based detection of partial discharges in power transformers

✍ Scribed by Jiangdong Deng; Hai Xiao; Wei Huo; Ming Luo; Russ May; Anbo Wang; Yilu Liu

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 177 KB
• Volume: 33
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(01)00022-6

✦ Synopsis

In this paper, a ÿber optic acoustic sensor system is designed and tested for on-line detection of the partial discharges inside high voltage power transformers. The ÿber optic sensor uses a silica diaphragm and a single mode optical ÿber encapsulated in a silica glass tube to form an extrinsic Fabry-Perot interferometer. Test results indicate that the developed ÿber optic sensors are capable of detecting the acoustic signals propagating inside the transformer oil with high resolution and high frequency.