Development of a Wideband Precision Electric Field Measuring Sensor-Reference-Cited by-同舟云学术

Development of a Wideband Precision Electric Field Measuring Sensor

Published:2023-11-25 Issue:23 Volume:23 Page:9409
ISSN:1424-8220
Container-title:Sensors
language:en
Short-container-title:Sensors

Author:

Long Zhaozhi¹²,Zhou Feng²,Lin Fuchang¹,Fan Jiawei²,Li Wenting²,Diao Yinglong²,Hu Kangmin²

Affiliation:

1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

2. China Electric Power Research Institute, Beijing 100192, China

Abstract

High-voltage electric field measurement technology has certain applications in electric field measurement of power systems, but due to the limitation of its measurement accuracy and bandwidth, it cannot be used for the measurement of lightning-impulse voltage. In order to calibrate the nonlinearity of the MV-level lightning-impulse voltage measurement system, this paper proposes the design and implementation of a high-precision inductive wideband electric field measuring sensor (EFMS). The influence of the metal shell on the electric field distribution was simulated, and the influence of the electric field non-uniformity coefficient was studied. The characteristics of the EFMS were tested, and the results showed that the EFMS can accurately reproduce the waveform of lightning-impulse voltage and power-frequency voltage, with a proportionality coefficient of 0.05664 V/(kV/m). In mostly uniform and extremely non-uniform fields, the nonlinearity of the EFMS for impulse voltage is less than ±0.25%, and the nonlinearity of the EFMS for power-frequency voltage is less than 0.1%. It is shown that the EFMS can be used for the nonlinearity calibration of ultra-high voltage impulse measurement devices.

Funder

State Grid science and technology project

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Link

https://www.mdpi.com/1424-8220/23/23/9409/pdf

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