Optical High-Voltage Sensor Based on Fiber Bragg Grating and PZT Piezoelectric Ceramics

The development of high-speed intelligent rail transit has increased the number of sensors applied on trains. These play an important role in train state control and monitoring. These sensors generally work in a severe environment, so the key problem for sensor data acquisition is to ensure data accuracy and reliability. In this paper, we follow the sequence of sensor signal flow, present sensor signal sensing technology, sensor data acquisition, and processing technology, as well as sensor fault diagnosis technology based on the voltage, current, speed, and temperature sensors which are commonly used in train traction systems. Finally, intelligent sensors and future research directions of rail transit train sensors are discussed.

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“…The piezoelectric crystal and fiber Bragg grating have been adopted to develop a 13.8 kV voltage sensor with a precision of up to 0.2% [23]. …”

Section: Signal Sensing Technologies Of Traction System Sensorsmentioning

confidence: 99%

Review on the Traction System Sensor Technology of a Rail Transit Train

Feng

Liao

et al. 2017

Sensors

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“…Usually instrument transformers in electric power facilities are massive and heavy equipment. In this sense, numerous current sensing schemes which make use of the Faraday Effect have been proposed, since optical systems frequently offer a wider dynamic range, lighter weight, improved safety and electromagnetic interference immunity [12].…”

Section: Hybrid Devices and Magnetostrictionmentioning

confidence: 99%

Application of Fiber Bragg Grating Sensors in Power Industry

Allil¹,

Werneck²,

Nazaré³

2013

Current Trends in Short- And Long-Period Fiber Gratings

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“…The potential optical effects that can be used for voltage sensing mainly include the Pockels effect, converse piezoelectric effect, fiber Bragg grating (FBG) and Kerr effect, etc. Recently, a high-voltage sensor system [5] using a PZT piezoelectric crystal as a transducer and a FBG as a strain measuring sensor that successfully met the demands IEC60044-5 for 0.2 level measurement was proposed. Ribeiro also developed a novel optimization algorithm to improve the sensitivity on demodulation of the FBG-based optical voltage sensor for 13.8 kV class [6].…”

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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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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Optical High-Voltage Sensor Based on Fiber Bragg Grating and PZT Piezoelectric Ceramics

Cited by 88 publications

References 14 publications

Review on the Traction System Sensor Technology of a Rail Transit Train

Review on the Traction System Sensor Technology of a Rail Transit Train

Application of Fiber Bragg Grating Sensors in Power Industry

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

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