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2 February 2009 Current transformer based on optical fiber fluorescent thermometry
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In the paper a review on the potential advantages of optical current transformers points out that it is the technology trend on the development of current transformer. But there are many more difficulties to be resolved, innovative ideas of developing optical current transformers must be strengthened. A high voltage current transformer project based on current thermal effect was introduced, which combined the current thermal effects and the optical fiber thermometry technology. Fiber optic temperature sensor was the earlier and mature product among fiber optic sensors in commercial, current thermal effects technology is more general applied, so the new project has the advantages over other current transformer projects which are now meeting the difficulties hardly to resolve. The relationship between the instantaneous value of measured current and the temperature rise was deduced, and the mathematical model of the current transformer was established. By use of the mathematical model, in theory, the instantaneous value of current can be tracked by the temperature output of sensor accurately, so that it can be used to measure instantaneous value of current. The technical data and features required of the main devices and components can be provided by use of the mathematical model for technical design of the project, simulation method and experiment tests were used to prove the availability.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Danping Jia, Ting Jia, Liang He, and Yingwen Lin "Current transformer based on optical fiber fluorescent thermometry", Proc. SPIE 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, 71600G (2 February 2009);

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