A broadband optical fiber transmission-based time domain measurement system for nanosecond-level transient electric field

A novel nanosecond transient electric field (E-field) measurement system is developed in this paper to measure the E-field pulse caused by the operation of the high-voltage switch (switching E-field pulse) in the substation. An electrically small rod antenna is used as the receiving antenna and is m...

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Bibliographic Details
Published in:Review of scientific instruments 2022-01, Vol.93 (1), p.014701-014701
Main Authors: Kong, Xu, Xing, Wen-qi, Xie, Yan-zhao, Zheng, Zhou, Sun, Zhen-dong
Format: Article
Language:English
Subjects:
Antennas
Broadband
Circuit design
Electric fields
Electromagnetic interference
Electronic components
Frequency response
High voltages
Input impedance
Measurement methods
Operational amplifiers
Optical fibers
Scientific apparatus & instruments
Substations
Switching
Time domain analysis
Time measurement
Waveforms
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Summary:A novel nanosecond transient electric field (E-field) measurement system is developed in this paper to measure the E-field pulse caused by the operation of the high-voltage switch (switching E-field pulse) in the substation. An electrically small rod antenna is used as the receiving antenna and is matched by the operational amplifier with high input impedance to achieve broadband frequency response and stable working performance. A broadband analog optical fiber transmission system is further designed based on the high-frequency circuit model of the electronic components. Unlike the traditional frequency domain E-field measurement methods, the developed measurement system can directly output the time domain waveform of the switching E-field pulse. It also has the advantages of adjustable sensitivity, portability, and anti-electromagnetic interference. The calibrated measurement bandwidth ranges from 200 Hz to 680 MHz. Furthermore, the switching E-field pulse in an ultra-high voltage substation is measured and analyzed to verify the effectiveness of the fabricated measurement system.
ISSN:0034-6748
1089-7623
DOI:10.1063/5.0068965