Rayleigh-based distributed temperature sensing and fiber Bragg grating point temperature sensing with a single optical fiber on high electrical potential of 1 MV

2017 ◽  
Author(s):  
T. Ringel ◽  
M. Willsch ◽  
T. Bosselmann
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Electrical Potential ◽  
Temperature Sensing ◽  
Bragg Grating ◽  
Distributed Temperature Sensing ◽  
Point Temperature

Application of Special Optical Fiber Sensing Technology in New Generation of Smart Substation

2014 ◽  
Vol 986-987 ◽  
pp. 1191-1195
Author(s):  
Rui Rui Yang ◽  
Hui Yuan Yang ◽  
Wei Chi Ou
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Current Transformer ◽  
Bragg Grating ◽  
Distributed Temperature Sensing ◽  
Fiber Sensing ◽  
Sensing Technology ◽  
Optical Fiber Sensing ◽  
New Generation ◽  
Smart Substation

The new generation of smart substation puts forward higher requirements to sensing technology. Based on the needs of these requirements, four kinds of special optical fiber sensing technology in power systems were researched: all-optical current transformer, distributed temperature sensing technology, fiber grating vibration sensing technology and fiber Bragg grating sensing technology. These kinds of optical fiber sensing technology for the new generation of smart substation to enhance its performance were analyzed. Finally, based on the fiber Bragg grating sensing technology, the online oil and winding temperature monitoring system was constructed for the new generation of smart substation.

scholarly journals Temperature Sensing of Stepped-Metal Coated Optical Fiber Bragg Grating with the Restructured Dual-Peak Resonance

2019 ◽  
Vol 9 (2) ◽  
pp. 286
Author(s):  
Yan Feng ◽  
Ehsan Toyserkani ◽  
Hua Zhang ◽  
Zhi-Dong Zhang
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Grating ◽  
Temperature Sensitivity ◽  
Temperature Sensing ◽  
Experimental Results ◽  
Metal Coating ◽  
Bragg Grating ◽  
Type B ◽  
Type C ◽  
Optical Fiber Bragg Grating

This paper demonstrates a method for the development of stepped-metal coating on optical fiber Bragg grating. The paper also analyzes the dual-peak resonance restructured by the nickel/copper stepped-metal coating. According to the coefficients of linear thermal expansion of the coatings, the modeling and experimental analysis is categorized into three types: Type A, Type B, and Type C. We denote the temperature sensitivity difference between the two peaks as ΔKT for Type A, ΔK′T for Type B, and ΔK″T for Type C. The experimental results show that ΔKT, ΔK′T, and ΔK″T are 2.1 pm/°C, 6.5 pm/°C, and 0.8 pm/°C, respectively. The model analysis and the experimental results all show the Type B stepped-metal coating causes the most obvious temperature sensitivity difference between the two resonance peaks. The stepped-metal coating on the same one Bragg grating can restructure the single resonance into dual-peak resonance with different temperature sensing, and Type B can be used to develop a dual-parameter optical fiber Bragg grating sensor at one location which can measure two physical parameters simultaneously.

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