Review of protection and fault handling for a flexible DC grid

被引：94
|
作者：
He, Jinghan [1 ]
Chen, Keao [1 ]
Li, Meng [1 ]
Luo, Yiping [1 ]
Liang, Chenguang [1 ]
Xu, Yin [1 ]
机构：
[1] Beijing Jiaotong Univ, Beijing 100044, Peoples R China
来源：
PROTECTION AND CONTROL OF MODERN POWER SYSTEMS | 2020年 / 5卷 / 01期
关键词：
Flexible DC power grid; Fault analysis; Protection; Fault isolation; Reclose; MULTITERMINAL HVDC GRIDS; ANALYTIC APPROXIMATION; NONUNIT PROTECTION; PILOT PROTECTION; SHORT-CIRCUIT; LOCATION; SCHEME; BREAKER; CONVERTERS; LINES;
D O I：
10.1186/s41601-020-00157-9
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
With the development of power electronics technology, the flexible DC grid will play a significant role in promoting the transformation and reformation of the power grid. It is immune to commutation failure and has high flexibility in power control and renewable energy grid integration. However, the protection and fault handling technology for a flexible DC grid is a big challenge because of the limited overcurrent capability of the converters. This paper summarizes the development of the flexible DC grid, and analyzes the fault characteristics in detail. Next, the applicability, advantages and disadvantages of the existing protection principle, fault isolation and recovery schemes are reviewed. Finally, the key problems and development trend of the future flexible DC grid are pointed out and forecasted respectively.
引用
收藏
页数：15
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