Fault coupling characteristic analysis and relay protection research on an AC/DC hybrid power grid

被引：0
|
作者：
Hou J. [1 ]
Song G. [1 ]
Xu R. [1 ]
Guo B. [1 ]
Yin L. [1 ]
Lü J. [1 ]
机构：
[1] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2021年 / 49卷 / 14期
基金：
中国国家自然科学基金;
关键词：
AC/DC hybrid grid; Control and protection coordination; Fault coupling characteristics; Relay protection;
D O I：
10.19783/j.cnki.pspc.201222
中图分类号：
学科分类号：
摘要：
As the amount of AC/DC hybridization increases in power systems, the difficulty of grid operation has increased significantly. Therefore, ensuring the safe operation of AC/DC hybrid grid has become a major and urgent issue for China. The converter station is the hub of an AC/DC hybrid grid. Different from the traditional synchronous machine power supply, its fault coupling characteristics are complicated. In this paper, starting from the response and transfer characteristics of the converter station to the disturbance, this paper explains the coupling characteristics and generation mechanism first. This provides a theoretical basis for the fault analysis and protection research of the AC/DC hybrid grid. Furthermore, it evaluates the adaptability of AC and DC line protection and studies new principles of relay protection in different fault periods. Finally, it puts forward an idea for control and protection coordination, and discusses further research directions. © 2021 Power System Protection and Control Press.
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页码：176 / 187
页数：11
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