Single-ended Fault Location of Hybrid MMC-HVDC System Based on Active Detection

被引：0
作者：
Song G. [1 ,2 ]
Hou J. [1 ,2 ]
Guo B. [1 ,2 ]
机构：
[1] Shaanxi Key Laboratory of Smart Grid, Xi'an Jiaotong University, Xi'an
[2] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an
来源：
Dianwang Jishu/Power System Technology | 2021年 / 45卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Active detection; Fault location; Hybrid MMC; Single ended;
D O I：
10.13335/j.1000-3673.pst.2020.0200a
中图分类号：
学科分类号：
摘要：
In order to further improve the performance of traditional fault location methods and ensure the reliability of DC line fault recovery, an active detection signal injection strategy is proposed based on the high controllability of hybrid MMC converter considering the influence of fault impedance, frequency-dependent parameters effect, numerical differential error and distributed capacity of transmission line. Based on the fault current limiting strategy and the idea of parameter identification, the compensation strategy of distributed parameter model is introduced to construct the parameter identification fault location equation with fault distance and transition resistance parameters to realize fault location. The simulation results show that the proposed fault location schemes can accurately identify the fault area, and are applicable for long DC lines and less affected by fault impedance and sampling rate. © 2021, Power System Technology Press. All right reserved.
引用
收藏
页码：730 / 740
页数：10
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