Field Test and Analysis of Broadband Characteristics of DC Current Transformer on Earth Electrode
Engineering Application|更新时间:2025-06-16
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Field Test and Analysis of Broadband Characteristics of DC Current Transformer on Earth Electrode
Automation of Electric Power SystemsVol. 46, Issue 6, Pages: 166-172(2022)
作者机构:
1.云南电网有限责任公司电力科学研究院,云南省昆明市 650217
2.昆明理工大学电力工程学院,云南省昆明市 650500
3.云南电网有限责任公司计量中心,云南省昆明市 650041
作者简介:
基金信息:
National Natural Science Foundation of China(52037003);the Key Science and Technology Project of Yunnan Province of China(202002AF080001);Fundamental Research Project of Yunnan Province of China(202001AT070096)
ZHU Mengmeng,SHU Hongchun,HE Zhaolei,et al.Field Test and Analysis of Broadband Characteristics of DC Current Transformer on Earth Electrode[J].Automation of Electric Power Systems,2022,46(6):166-172.
ZHU Mengmeng,SHU Hongchun,HE Zhaolei,et al.Field Test and Analysis of Broadband Characteristics of DC Current Transformer on Earth Electrode[J].Automation of Electric Power Systems,2022,46(6):166-172. DOI: 10.7500/AEPS20210803006.
Field Test and Analysis of Broadband Characteristics of DC Current Transformer on Earth Electrode
The broadband measurement performance of DC current transformer on earth electrode is of great significance to the control and protection of DC transmission systems. Due to the lack of field broadband characteristic test technology and key equipment
the effective field detection has not been carried out. Combined with the actual operation conditions of earth electrodes
a field test technology of broadband characteristics of DC current transformer on earth electrode is proposed in this paper. A miniaturized high-frequency current source and an integrated broadband test device based on digital physical simulation are developed
which solve the problems of high-accuracy acquisition
extraction and data synchronization of multiple types of standard signals. In order to reduce the requirements of field test for the capacity of high-frequency current source
the equivalent analysis model of primary circuit in field broadband test is established
and two feasible schemes for reducing the loop area are proposed. The DC component
frequency response and DC component superposition harmonic detection of DC current transformer on earth electrode are completed on site
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