An Electronic Voltage Transducer Based on Electrostatic Charge Escape

Xu, Qifeng; Dong, Chunlin; Huang, Yifan

doi:10.1109/tim.2022.3211551

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…The optical voltage transducer (OVT) based on the Pockels effect has the advantages of good electrical insulation, large bandwidth and strong anti-electromagnetic interference [1][2][3], which is deem to the ultimate development of high voltage measurement technologies. However, the thermal stress includes the external thermal stress and internal one induced by the temperature drift affects the optical characteristics of electro-optic crystals [4,5], which introduces the additional phase delay [4,6,7].…”

Section: Introductionmentioning

confidence: 99%

AC zero crossing compensation for thermal stress linear birefringence in optical voltage transducer

Huang,

Xu,

et al. 2023

Meas. Sci. Technol.

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The optical voltage transducer (OVT) based on the Pockels effect has a perennial issue of the thermal stress linear birefringence in the electro-optic crystal being overlapped with the electro-optic phase delay, which is difficult to be eliminated and seriously affects the measurement accuracy and reliability. In this paper an AC zero crossing compensation method for thermal stress linear birefringence is proposed. It is based on that when the steady-state AC voltage crosses zero points the electric field is zero, and the electro-optic crystal does not have any electro-optic effect, so the electro-optic phase delay is zero. In this case, the output of the OVT is an additional phase delay caused by the thermal stress linear birefringence, which can be separated and compensated by the linear demodulation OVT and the AC zero crossing detection circuit. The experimental results show that in the temperature range of -40℃ to 70℃, the measurement accuracy of the OVT after thermal stress linear birefringence compensation is improved from 0.5 class to 0.2 class. This method is helpful for the practicality of the OVT.

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Section: Introductionmentioning

confidence: 99%

AC zero crossing compensation for thermal stress linear birefringence in optical voltage transducer

Huang,

Xu,

et al. 2023

Meas. Sci. Technol.

Self Cite

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show abstract

“…Non-contact voltage measurement technology is of great significance in the internet of things, power electronics, and high voltage engineering [ 5 ]. At present, there are two main non-contact voltage sensing methods: photoelectric sensing and electric field coupling sensing [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Photoelectric sensing technology is based on the optical principle of voltage measurement [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Research on a Non-Contact Multi-Electrode Voltage Sensor and Signal Processing Algorithm

Zhang

Yang

Zhao

et al. 2022

Sensors

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Traditional contact voltage measurement requires a direct electrical connection to the system, which is not easy to install and maintain. The voltage measurement based on the electric field coupling plate capacitance structure does not need to be in contact with the measured object or the ground, which can avoid the above problems. However, most of the existing flat-plate structure voltage measurement sensors are not only expensive to manufacture, but also bulky, and when the relative position between the wire under test and the sensor changes, it will bring great measurement errors, making it difficult to meet actual needs. Aiming to address the above problems, this paper proposes a multi-electrode array structure non-contact voltage sensor and signal processing algorithm. The sensor is manufactured by the PCB process, which effectively reduces the manufacturing cost and process difficulty. The experimental and simulation results show that, when the relative position of the wire and the sensor is offset by 10 mm in the 45° direction, the relative error of the traditional single-electrode voltage sensor is 17.62%, while the relative error of the multi-electrode voltage sensor designed in this paper is only 0.38%. In addition, the ratio error of the sensor under the condition of power frequency of 50 Hz is less than ±1% and the phase difference is less than 4°. The experimental results show that the sensor has good accuracy and linearity.

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A Multistage Dry Insulated Current Transformer

Zhang

Huang

et al. 2023

IEEE Sensors J.

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An Electronic Voltage Transducer Based on Electrostatic Charge Escape

Cited by 4 publications

References 23 publications

AC zero crossing compensation for thermal stress linear birefringence in optical voltage transducer

AC zero crossing compensation for thermal stress linear birefringence in optical voltage transducer

Research on a Non-Contact Multi-Electrode Voltage Sensor and Signal Processing Algorithm

A Multistage Dry Insulated Current Transformer

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