DOI: 10.1049/ell2.13181 ISSN: 0013-5194
A wide‐angle infrared lens for temperature detection in closed high‐voltage switchgear
Jie Chen, Zu‐ying Bian, Zhi‐ting Zhou, Zhen‐nan Fan- Electrical and Electronic Engineering
Abstract
In this letter, the authors develop a wide‐angle Fresnel infrared lens for detecting temperature inside closed switchgear. Based on the structural characteristics of closed switchgear, a frame structure for the lens and a single‐sided installation method were devised. A field test was conducted to simulate temperature diagnosis and monitoring. The results indicate that the lens described in this letter enables satisfactory observation of the internal temperature of closed high‐voltage switchgear.