Fiber-Optic Current Sensors for Lightning Detection in Wind Turbines

Krämer, S.; León, Fernando Puente

doi:10.1364/ofs.2006.tue53

Cited by 7 publications

(2 citation statements)

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“…They generally measure only local current or magnetic fields. This type of sensor has been considered for lightning sensing on windmill structures 3 . They are rigid and are difficult to make into closed, conformal forms for measuring total structure currents.…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Sensor for Aircraft Lightning Current Measurement

Nguyen

Ely

Szatkowski

et al. 2012

4th AIAA Atmospheric and Space Environments Conference

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An electric current sensor based on Faraday rotation effect in optical fiber was developed for measuring aircraft lightning current. Compared to traditional sensors, the design has many advantages including the ability to measure total current and to conform to structure geometries. The sensor is also small, light weight, non-conducting, safe from interference, and free of hysteresis and saturation. Potential applications include characterization of lightning current waveforms, parameters and paths, and providing environmental data for aircraft certifications. In an optical fiber as the sensing medium, light polarization rotates when exposed to a magnetic field in the direction of light propagation. By forming closed fiber loops around a conductor and applying Ampere's law, measuring the total light rotation yields the enclosed current. A reflective polarimetric scheme is used, where polarization change is measured after the polarized light travels round-trip through the sensing fiber. The sensor system was evaluated measuring rocket-triggered lightning over the 2011 summer. Early results compared very well against a reference current shunt resistor, demonstrating the sensor's accuracy and feasibility in a lightning environment. While later comparisons show gradually increasing amplitude deviations for an undetermined cause, the overall waveforms still compared very well.

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Section: Introductionmentioning

confidence: 99%

Fiber-Optic Sensor for Aircraft Lightning Current Measurement

Nguyen

Ely

Szatkowski

et al. 2012

4th AIAA Atmospheric and Space Environments Conference

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“…Several lightning-location methods using fibre optical sensors have already been proposed. In [1,2], the use of the Faraday effect to detect lightning was proposed. In [3], a Rogowski coil coupled to line insulators and fibre optic light transmitters is used to detect when lightning breaks an insulator string of a high-voltage power transmission line.…”

Section: Introductionmentioning

confidence: 99%

A passive opto-electronic lightning sensor based on electromagnetic field detection for utilities applications

Rosolem¹,

Barbosa²,

Floridia³

et al. 2010

Meas. Sci. Technol.

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This paper presents the results of a passive optical lightning sensor for utilities applications. The main sensor application is for the location of lightning strikes in overhead power lines, but it can also be used in substations or in power generation plants. The proposed sensor detects lightning indirectly by means of detecting lightning electromagnetic pulses, which are used to modulate directly a semiconductor laser coupled to a fibre optic pigtail. No solar panels, batteries or electronic control circuits are necessary to implement this sensing technique. This paper shows the results of the sensor characterization made only in laboratory and the possibilities of its use in an optical WDM sensor network.

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