General Fault Current Calculation for Fault Current Transfer MMC

被引：0
|
作者：
Deng W. [1 ]
Xu J. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Changping District, Beijing
来源：
Dianwang Jishu/Power System Technology | 2022年 / 46卷 / 02期
基金：
中国国家自然科学基金;
关键词：
DC power grid; Fault current calculation; Fault self-clearance; Network equivalence;
D O I：
10.13335/j.1000-3673.pst.2021.0460
中图分类号：
学科分类号：
摘要：
As an effective means of the new energy collection such as wind power and photovoltaic, the DC power grid is of great significance for its equipment selection, protection design, parameter optimization, etc. in the calculation of fault current. Firstly, this paper analyzes the characteristics of fault clearing schemes which need the cooperation of the source side and the network side, and introduces the basic principles of the fault current transfer MMC. Then, combined with the specific process of the fault ride-through, a general fault current calculation method for the fault current transfer MMC is proposed. In order to maximize the advantages of such a scheme, the design basis of the key parameters is provided. Finally, a four terminal DC power grid is built on the PSCAD/EMTDC, and the effectiveness of the proposed fault current calculation method is verified. The results show that the proposed fault current calculation scheme has high calculation accuracy and good generality. © 2022, Power System Technology Press. All right reserved.
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页码：511 / 520
页数：9
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