浙江电力

2024, v.43;No.333(01) 99-107

[打印本页] [关闭]
本期目录(Current Issue) | 过刊浏览(Archive) | 高级检索(Advanced Search)

电阻型直流故障限流器的冲击特性研究
A study on the impact characteristics of resistive-type DC fault current limiter

赵紫辉,黄辉,陆红斌,王娟,甄宝,任兴旺,张翀
ZHAO Zihui,HUANG Hui,LU Hongbin,WANG Juan,ZHEN Bao,REN Xingwang,ZHANG Chong

摘要(Abstract):

直流故障限流器能够快速限制故障电流上升,但需要关注其在故障冲击过程中的限流动态特性。为此,开展电阻型限流器的故障冲击特性研究。首先,理论分析并推导限流器串入前后系统直流电压、限流器耐受冲击电流的数学表达式。然后,搭建直流大电流冲击平台,研发限流器实验室样机;在MATLAB/Simulink仿真平台中搭建限流器模型并开展冲击特性仿真分析。最后,分别对单线圈和多线圈并联结构的电阻型限流器进行大电流冲击测试。仿真与实验结果表明:故障冲击越大,限流器失超后电阻上升越快且幅值越大,限流效果越好;在冲击电压较低时,限流电阻会呈现先迅速上升然后下降的趋势。
DC fault current limiters can rapidly restrict the rise of fault currents, but attention needs to be paid to their dynamic current-limiting characteristics during fault impact. To address this, a study on the fault impact characteristics of a resistive-type current limiter is conducted. Firstly, mathematical expressions for the DC voltage and the withstandable fault current before and after the limiter is connected are theoretically analyzed and derived. Subsequently, a high-current DC impact platform is established, and a laboratory prototype of the current limiter is developed. A limiter model is built on the MATLAB/Simulink platform to conduct simulation analysis of the impact characteristics. Finally, high-current impact tests are performed on the resistive-type current limiters with singlecoil and multi-coil parallel structures. Simulation and experimental results indicate that with increasing fault impact, the limiters' resistance rises more rapidly and to a greater extent after reaching the critical limits, resulting in a more effective current-limiting performance. Additionally, at lower impact voltages, the current-limiting resistance exhibits a rapid rise followed by a decrease trend.

关键词(KeyWords): 柔性直流输电;故障限流器;短路故障;失超电阻;故障冲击
VSC-HVDC;fault current limiter;short circuit fault;quenching resistance;fault impact

Abstract:

Keywords:

基金项目(Foundation): 中国南方电网有限责任公司科技项目(GDKJXM20198265)

作者(Author): 赵紫辉,黄辉,陆红斌,王娟,甄宝,任兴旺,张翀
ZHAO Zihui,HUANG Hui,LU Hongbin,WANG Juan,ZHEN Bao,REN Xingwang,ZHANG Chong

DOI: 10.19585/j.zjdl.202401012

参考文献(References):

扩展功能
本文信息
服务与反馈
本文关键词相关文章
本文作者相关文章
中国知网
分享