Non-contact Voltage Measurement Method of Transmission Line Based on Electric Field Sensor Array

被引：0
|
作者：
Feng D. [1 ]
Liu H. [1 ]
Li J. [2 ]
Bi T. [1 ]
机构：
[1] State Key Laboratory of Aternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing
[2] State Grid Jibei Electric Power Research Institute, Beijing
来源：
Gaodianya Jishu/High Voltage Engineering | 2024年 / 50卷 / 01期
关键词：
charge simulation method; electric field sensor array; non-contact voltage measurement; proportional coefficient matrix; voltage instantaneous value;
D O I：
10.13336/j.1003-6520.hve.20230419
中图分类号：
学科分类号：
摘要：
Voltage is an important parameter for characterizing the operating status of power lines, and achieving flexible and accurate voltage measurements is crucial for ensuring the stable operation of the power system. Traditional contact-based voltage measurement methods have drawbacks such as large size of voltage transformers, electromagnetic resonance and high-frequency oscillations, and the need for power outage during installation, making it inconvenient for massive measurements. In contrast, non-contact measurement, which does not require direct contact with the conductors, offers improved safety and convenience, and is considered as the future direction for voltage measurement. This paper presents a non-contact voltage measurement method for transmission lines based on an array of electric field sensors. To address the issue of unknown conductor position information, the method employs an electric field sensor array arranged perpendicularly to the direction of the conductors. By solving the equations involving unknown conductor information, a coefficient matrix is constructed to estimate the instantaneous values of conductor voltages. The influence of electric field sensors on the measurement is analyzed. Finally, a simulation verification of instantaneous voltage values at the 10 kV voltage level is conducted, demonstrating a maximum measurement error of 2.219%. © 2024 Science Press. All rights reserved.
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页码：292 / 301
页数：9
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