D6.1 - Comparison of spatially extended fiber-optic temperature measurement systems for energy applications
- Event
- AMA Conferences 2013
2013-05-14 - 2013-05-16
Nürnberg - Band
- Proceedings SENSOR 2013
- Chapter
- D6 - Temperatur Sensors
- Author(s)
- M. Villnow, J. Kaiser, T. Bosselmann - Siemens AG, Erlangen (Germany)
- Pages
- 564 - 571
- DOI
- 10.5162/sensor2013/D6.1
- ISBN
- 978-3-9813484-3-9
- Price
- free
Abstract
In this paper different spatially extended fiber-optic temperature measurement systems are analyzed and compared in terms of spatial and temporal resolution, accuracy and response time, cross sensitivity and calibration. The measurement systems are tested particularly with regard to the application in electric power stations. These installations like power generators, large drives, transformers, power transmission lines and gas turbines require a distribution of measurement points of some centimeters up to tens of meters. Whenever the sensor locations are on high voltage potential or extreme temperature the use of fiber optical sensors turned out to be beneficial. So the investigated
systems are all based on fiber optics but different physical principles like Raman (RAM-DTS), Brillouin (BRI-DTS) and Rayleigh (RAY-DTS) backscattering, Fiber Bragg Gratings (FBG), gallium arsenide band edge shift (GaAs-BGS), fluorescence decay time (FLUO) and Fabry-Perot (FPI) interferometry. A spatially extended measurement setup could either be realized by an intrinsically distributed method like Raman backscattering or by multiplexed single point sensors i.e. FBGs. The benefits and disadvantages of each system with respect to our high voltage applications are shown and compared to each other. Finally some recommendations are given to achieve the best and cost efficient
measurement result considering all technical requirements.