An on-line transformer windings temperature measurement system based on fiber Bragg grating

Cheng, Zao; Cheng, Lin; Li, Wei; Zhou, Jianhua; Yang, Kecheng; Zhang, Xiaohui

doi:10.1117/12.919019

Cited by 2 publications

(2 citation statements)

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“…At present, fibre sensing technology has been applied in transformer detection, for example, fluorescent fibre measurements and quasi-distributed fibre temperature measurements using fibre Bragg grating (FBG) [ 19 , 20 , 21 , 22 ]. Reference [ 20 ] presents a method of combining fibre with winding wire.…”

Section: Introductionmentioning

confidence: 99%

A Feasibility Study of Transformer Winding Temperature and Strain Detection Based on Distributed Optical Fibre Sensors

Liu

Yuan

Fan

et al. 2018

Sensors

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The temperature distribution and deformation of the transformer windings cannot be measured in a distributed manner by the traditional method and failure location cannot be performed. To solve these problems, we present a transformer winding temperature and strain based on a distributed optical fibre sensing detection method. The design of the optical fibre winding composite model is developed and simulated winding temperature rise test and local deformation test distinguish between measuring the winding temperature and the strain curve. The test results show that the distributed optical fibre can transmit wire strain efficiently. Optical fibres, in the process of winding, have a certain pre-stress. Using the Brillouin–Raman joint measuring method, one can effectively extract the optical fibre temperature and strain information and measure the length of the winding direction of the temperature and strain distribution curve to a temperature measurement precision of ±2 °C and strain detection accuracy of ±50 με. The system can carry out local hot spot and deformation localisation, providing new ideas for the transformer winding state monitoring technology.

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Section: Introductionmentioning

confidence: 99%

A Feasibility Study of Transformer Winding Temperature and Strain Detection Based on Distributed Optical Fibre Sensors

Liu

Yuan

Fan

et al. 2018

Sensors

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“…Consequently it is quite useful and necessary to obtain the accurate position and temperature of the hot‐spot in the winding. The fiber sensors can be surface mountable and embedded in cross‐over block on the measurement of the internal winding temperature of transformers .…”

Section: Measurement Of Winding Temperature In 35 Kv/4000 Kva Oil‐immmentioning

confidence: 99%

Hot‐spot temperature and temperature decay rate measurement in the oil immersed power transformer through FBG based quasi‐distributed sensing system

Deng

De-xin

Benxi

et al. 2016

Micro & Optical Tech Letters

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This work demonstrates a quasi‐distributed sensing method to obtain the accurate location and temperature value of hot‐spot by placing Fiber Bragg Grating sensors in the conductor wires of transformer's windings. The quasi‐distributed temperature measuring system can support the demodulation of up to 218 FBGs, and has the ability to obtain the temperature decay rates of windings, strips, iron cores, and top oil in a 35 kV/4000 kVA oil immersed power transformer through a temperature‐rise test. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:472–475, 2017

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An on-line transformer windings temperature measurement system based on fiber Bragg grating

Cited by 2 publications

References 0 publications

A Feasibility Study of Transformer Winding Temperature and Strain Detection Based on Distributed Optical Fibre Sensors

A Feasibility Study of Transformer Winding Temperature and Strain Detection Based on Distributed Optical Fibre Sensors

Hot‐spot temperature and temperature decay rate measurement in the oil immersed power transformer through FBG based quasi‐distributed sensing system

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