Optical Voltage Sensors Based on Integrated Optical Polarization-Rotated Reflection Interferometry

Chu, Woo-Sung; Kim, Sung-Moon; Wu, Xiaoping; Wen, Li; Oh, Min‐Cheol

doi:10.1109/jlt.2016.2527685

Cited by 20 publications

(10 citation statements)

References 21 publications

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“…It is noted that θ 1 only affects the interference intensity instead of the feedback phase and the interference light power fluctuation can be suppressed by using the closed-loop detection method [14,15]. Due to the two orthogonal linear-polarized beams generated after passing the 45° splice, the unideal welding angles before OPM have no influence on the feedback phase.…”

Section: Theoretic Modeling and Error Analysesmentioning

confidence: 99%

“…Chu et al presented an integrated optical device consisting of a coupler, polarizer, phase modulator and polarization converter to control the operating bias point of optical voltage transducers [14]. Then, the integrated optical device was applied in a reflection type optical voltage sensing to optimize the temperature dependence of OVS [15]. A closed-loop detection system of OVS was proposed to reduce the gain drift of a forward channel caused by the temperature changes [16] and a closed-loop algorithm of OVS was designed to improve the detection precision of low voltage considering the cross coupling of two closed-loops [17].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors

Liu

et al. 2017

Sensors

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An improved temperature-insensitive optical voltage sensor (OVS) with a reciprocal dual-crystal sensing method is proposed. The inducing principle of OVS reciprocity degradation is expounded by taking the different temperature fields of two crystals and the axis-errors of optical components into consideration. The key parameters pertaining to the system reciprocity degeneration in the dual-crystal sensing unit are investigated in order to optimize the optical sensing model based on the Maxwell's electromagnetic theory. The influencing principle of axis-angle errors on the system nonlinearity in the Pockels phase transfer unit is analyzed. Moreover, a novel axis-angle compensation method is proposed to improve the OVS measurement precision according to the simulation results. The experiment results show that the measurement precision of OVS is superior to ±0.2% in the temperature range from −40 °C to +60 °C, which demonstrates the excellent temperature stability of the designed voltage sensing system.

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Section: Theoretic Modeling and Error Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors

Liu

et al. 2017

Sensors

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“…Xia et al introduced the thermodynamic model including an electric field, stress and temperature field, and analyzed the impact of optical properties such as temperature and sulfur hexafluoride (SF6) for suppressing the environmental factors [11]. Chu et al utilized a polymeric integrated optic system consisting of coupler, polarizer, phase modulator and polarization converter to enhance the anti-disturbance ability of OVSs [12]. …”

Section: Introductionmentioning

confidence: 99%

Optimization of Detection Accuracy of Closed-Loop Optical Voltage Sensors Based on Pockels Effect

Deng

Zhang

et al. 2017

Sensors

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The influence of optical parameters on the performance of closed-loop optical voltage sensors (OVSs) based on Pockels effect is analyzed and a control algorithm is proposed to suppress the nonlinearity caused by the unideal parameters of optical devices for optimizing the detection precision of OVSs. First, a quantified model of the feedback phase demonstrates how the optical parameters of optical devices (including light source, polarizer, 45° fusion point, Faraday rotator and half-wave plate) result in the nonlinearity of closed-loop OVSs. Then, the parameter indexes of different optical devices are put forward to instruct the manufacturing process of the optical system. Furthermore, a closed-loop control algorithm is investigated to improve the measurement accuracy of nonlinear OVSs considering the unideal parameters. The experiment results indicate that additional bias caused by undesirable optical parameters is obviously decreased so that the measurement accuracy of OVSs satisfies the demand of IEC60044-3 for 0.1 level measurement accuracy, which verifies the effectiveness and correctness of the methods for suppressing the impact of unideal optical parameters on OVSs.

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“…Moreover, the saturation of the magnetic susceptibility of the magnetic VT iron core limits the linear response range, and the thermal heating caused by surge currents can lead to explosions. The large amount of oil that is used for insulation, as well as the parts made of copper, ceramic and iron lead to large volume and weight [2]. The use of optical fibers to carry the measurement light signal to and from the sensor-head also provides the ability to control power systems remotely, electrically isolating the observer from the HV environment, thereby adding immunity against lightning and electromagnetic interference.…”

Section: Introductionmentioning

confidence: 99%

“…BGO is usually chosen as the sensing element because it possesses neither natural birefringence with temperature dependence or optical activity [3]. On the other hand, LiNbO 3 and LiTaO 3 crystals are more attractive for integrated optical OVSs [2], [4]. Although a large number of different experimental arrangements and operating principles have been published, most OVSs employ classical mathematical tools such as the Jones matrix [5], [6] or adaptations of classical techniques usually applied to interferometers, such as optical phase detection schemes applied to optical fiber gyroscopes [7].…”

Section: Introductionmentioning

confidence: 99%

Polarimetric Optical High-Voltage Sensor Using Synthetic-Heterodyne Demodulation and Hilbert Transform With Gain Control Feedback

Galeti

Higuti

Kitano

et al. 2017

IEEE J. Select. Topics Quantum Electron.

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-Optical voltage sensors are widely used for HighVoltage (HV) sensing but measurement accuracy is often compromised by sensitivity drift due to variations in the ambient conditions. Synthetic-heterodyne demodulation is a useful technique for dynamic displacement measurements using interferometric sensors as it can provide a detected signal that is immune to interferometric drift. In this paper a new syntheticheterodyne technique, employing the Hilbert transform and gain control feedback, is applied to a polarimetric based optical sensor system and used to measure a HV signal. The system comprises a He-Ne laser source, optical phase modulator and HV sensor located between two polarizers followed by a photodetector and real-time electrical signal acquisition and processing. The use of a control loop results in significant improvements in the stability and accuracy of the detected HV signal. The sensor system was used to measure a 60 Hz HV signal with an amplitude range of 300 V to 7.5 kV. The sensor was also used to successfully measure the total power line harmonic distortion of a highly distorted 4 kV signal. The experimental results show very good agreement with measurements obtained by using the industry standard signal coincidence method.

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Optical Voltage Sensors Based on Integrated Optical Polarization-Rotated Reflection Interferometry

Cited by 20 publications

References 21 publications

Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors

Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors

Optimization of Detection Accuracy of Closed-Loop Optical Voltage Sensors Based on Pockels Effect

Polarimetric Optical High-Voltage Sensor Using Synthetic-Heterodyne Demodulation and Hilbert Transform With Gain Control Feedback

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