Development of a fiber optic current sensor for power systems

MacDougall, Trevor W.; Lutz, D.R.; Wandmacher, R.A.

doi:10.1109/61.127089

Cited by 35 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained results of the frequency analysis allow for determining the measurement errors depending on the standard of optical fiber used and the number of turns of the polarimetric sensor measuring coil. For this purpose, the following definition was used [40]: 11) where: I out -true RMS value of the current at the output of the polarimetric current sensor The obtained results of the frequency analysis allow for determining the measurement errors depending on the standard of optical fiber used and the number of turns of the polarimetric sensor measuring coil. For this purpose, the following definition was used [40]: Using the Equations ( 10) and ( 11), the absolute and relative error of the measurement were determined (Figures 12 and 13).…”

Section: Amentioning

confidence: 99%

“…Many scientific studies have considered sensors with a fiber optic measuring coil made of single mode [8][9][10][11][12] or multimode optical fibers [13,14]. Sensors of this type, compared to those in which the active element is a crystal [6,7], can be much easier mounted on the poles of the existing low, medium, and high voltage power lines in order to implement remote measurement and control-protection systems.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Testing of a Polarimetric Current Sensor in the Frequency Domain

Torbus

Michalski

2021

Sensors

View full text Add to dashboard Cite

This paper proposes an original model of a polarimetric current sensor, in which the measuring coil was made of a single mode telecommunication optical fiber ITU-T G.652, G.653, G.655, and G.657. This sensor was subjected to the commercialization process, which was carried out by a company combining the functionality of a technology transfer center with the capabilities of the Startit Fund Sp. z o.o. The published results included the analysis of the implementation readiness, the analysis of the market potential, the valuation of the industrial property rights of the invention and indicated further directions of scientific research on the sensor, which include the frequency analysis of measurement signals. This prompted the conduct of relevant scientific research. In this paper, the idea of measurement of current using polarimetric current sensor with optical fiber coil has been briefly characterized. It shows the definition and basic properties of the Discrete Fourier Transform (DFT). It discusses the technique of determining the value of each harmonic of signal at the input and output of polarimetric current sensor. The value of measurement errors and total harmonic distortion (THD) have been calculated. The general conclusions for disturbances in the processing realized in polarimetric current sensor have been formulated. In addition, the impact of the molar concentration of the dopant GeO2 in the core of the single mode telecommunication optical fibers and the impact of the number of turns of the measuring coil on the distortion accompanying the process of processing have been determined. Therefore, it can be concluded that the key result obtained during the research is the confirmation of the fact that single mode telecommunication optical fibers can be used to build the measuring coil of a polarimetric sensor used for measuring alternating currents. This means that the considered sensor, when measuring this type of currents, does not introduce additional distortions and distortions of their waveforms.

show abstract

Section: Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Testing of a Polarimetric Current Sensor in the Frequency Domain

Torbus

Michalski

2021

Sensors

View full text Add to dashboard Cite

show abstract

“…F IBER optic magnetic field sensors have been investigated over the years for current measurement. These sensors can be employed in power networks, replacing traditional transformers where catastrophic explosive failures can happen, offering high voltage immunity, light weight, large bandwidth and small size [1], [2]. Typically, optical magnetic field sensors are based on magnetic fluids, Lorentz force, Faraday and magnetostrictive effect.…”

Section: Introductionmentioning

confidence: 99%

Intensity-Modulated Optical Fiber Sensor for AC Magnetic Field Detection

Nascimento

Baptista

Jorge

et al. 2015

IEEE Photon. Technol. Lett.

View full text Add to dashboard Cite

An erbium-doped (Er 3+) fiber optic laser is proposed for sensing alternated magnetic fields by measuring the laser intensity modulation. The sensor is fabricated using two partially overlapped narrow-band fiber Bragg gratings (FBGs) and a section of doped fiber in a Fabry-Perot configuration. Laser power stability and bandwidth are studied while changing the overlap. A bulk rod of TbDyFe, a magnetostrictive material, is glued to both the FBGs and the laser wavelength and power are modulated according to the magnetic field. Acquisition and processing are done using virtual instrumentation. Results have shown the possibility of detecting 11.18 µT rms / √ Hz for an alternating magnetic field of 4.17 mT rms .

show abstract

“…On the other hand, FOCT not only makes up for the poor insulation property of conventional electric transformer, but meets demands in relay protection, electrical equipment automation, insulation level promotion in power system. In recent years, FOCT is paid more attention and attempts are made to apply FOCT in measurement of ultra-high voltage and ultra-heavy current [1][2][3][4]. In practical engineering applications, however, the FOCT still faces some problems.…”

Section: Introductionmentioning

confidence: 99%

Compensation of Phase Modulation Disturbance in All Fiber-Optical Current Transformer

Luo¹,

Xia²,

Chen³

et al. 2013

AMM

View full text Add to dashboard Cite

In order to improve measurement accuracy of all fiber-optical current transformer (FOCT), an improved demodulation algorithm was proposed for a sine modulation. The formula for effective phase modulation depth (EPMD) was firstly presented, and three kinds of potential external disturbance in EPMD were analyzed. To overcome the current measurement error induced by these EPMD disturbances, we put forward an improved algorithm for time-dependent measurement of EPMD by second- and fourth-order harmonic component of optoelectronic signal. A simulation experiment in different disturbance intensity were carried out, and the results showed that when measured current is between 200A~1500A,the proposed algorithm can enhance the current measurement accuracy by over 30 times than the conventional algorithm, and measurement relative deviation can be maintained below 0.2% if the disturbance intensity is below 5%.

show abstract

Development of a fiber optic current sensor for power systems

Cited by 35 publications

References 13 publications

Testing of a Polarimetric Current Sensor in the Frequency Domain

Testing of a Polarimetric Current Sensor in the Frequency Domain

Intensity-Modulated Optical Fiber Sensor for AC Magnetic Field Detection

Compensation of Phase Modulation Disturbance in All Fiber-Optical Current Transformer

Contact Info

Product

Resources

About