An online stable energy extraction method for a transmission line based on adaptive adjustment of auxiliary core impedance

被引：0
|
作者：
Zhan K. [1 ,2 ]
Gao G. [1 ]
Chen Y. [2 ]
Luo J. [2 ]
Li G. [1 ]
机构：
[1] School of Electrical and New Energy, China Three Gorges University, Yichang
[2] Hubei Energy Group Ezhou Power Generation Co., Ltd., Ezhou
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2024年 / 52卷 / 10期
基金：
中国国家自然科学基金;
关键词：
auxiliary core; impedance adjustment; low fever; online energy extraction; output voltage; wide range current;
D O I：
10.19783/j.cnki.pspc.231324
中图分类号：
学科分类号：
摘要：
To address the issue of energy overflow in online energy harvesting devices caused by large fluctuations in current in power transmission lines, a method for stable online energy harvesting on transmission lines based on adaptive adjustment of auxiliary magnetic core impedance is proposed. By adding auxiliary magnetic cores and constructing a multi-magnetic circuit model for the energy harvesting branch and signal branch, the goal of stable energy harvesting is achieved. Based on the relationship between busbar, energy harvesting branch coil, and signal branch coil currents, a corresponding energy harvesting model is built on the Matlab/Simulink simulation and test platform. The operational effects of the energy harvesting branch are investigated at different current levels and with or without auxiliary magnetic cores. The costs, control complexity, and reliability are also analyzed. The simulation and test results demonstrate that even as the current in the power transmission line rises from 30 A to 100 A, the output voltage of the energy harvesting load can still be maintained within a stable range. This confirms that the output voltage of the energy-harvesting load can be maintained without additional power supply modules, meeting the power supply requirements of online monitoring devices. © 2024 Power System Protection and Control Press. All rights reserved.
引用
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页码：74 / 83
页数：9
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