Study on the Broadband Measurement Method of Electric Field Sensing Voltage Based on the Add-Window Technique

With the popularization of power electronic equipment, the problem of harmonic pollution has become more and more prominent, posing a serious threat to the safe operation of power systems. In order to improve the stability and efficiency of the power system, the broadband measurement of harmonics ha...

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Bibliographic Details
Published in:Energies (Basel) 2024-12, Vol.17 (24), p.6289
Main Authors: Xu, Minrui, Li, Zhixin, Lu, Shufeng, Chen, Gang, Quan, Xiangjun, Mo, Xiaoliang
Format: Article
Language:English
Subjects:
Accuracy
Analysis
electric field sensing
Electric fields
Electric power systems
Electric transformers
Electronic equipment and supplies
Fourier transforms
Harmonic analysis
harmonic measurement
Liu, Timothy
Measurement
Methods
non-contact measurement
Sensors
Systems stability
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Summary:With the popularization of power electronic equipment, the problem of harmonic pollution has become more and more prominent, posing a serious threat to the safe operation of power systems. In order to improve the stability and efficiency of the power system, the broadband measurement of harmonics has become a key direction of research. In this paper, a novel broadband harmonic measurement method is proposed, which combines the electric field sensing technique and the TCW add-window discrete Fourier transform technique. The amplification gain coefficient deviation of the measurement system is less than 3 dB in both steady-state and transient excitation signal test experiments. The measurement system can maintain a stable and continuous output in a wide frequency band within the range of MHz, which can effectively detect the harmonic components and provide an effective technical means for the monitoring of harmonics in the power system.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17246289