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

Minrui Xu, Zhixin Li, Shufeng Lu, Gang Chen, Xiangjun Quan and Xiaoliang Mo ()
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Minrui Xu: Marketing Service Center of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211703, China
Zhixin Li: Marketing Service Center of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211703, China
Shufeng Lu: Marketing Service Center of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211703, China
Gang Chen: Marketing Service Center of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211703, China
Xiangjun Quan: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Xiaoliang Mo: Shenzhen Guodian Technology Communication Co., Ltd., Shenzhen 518028, China

Energies, 2024, vol. 17, issue 24, 1-16

Abstract: 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.

Keywords: harmonic measurement; electric field sensing; non-contact measurement (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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