Abstract

When fault occurs in the DC distribution network, the fault current rises rapidly, and it is difficult to develop fast and reliable relay protection. In the paper, by analyzing the response characteristics of each circuit when bipolar fault occurs in the DC distribution line, a fast DC protection scheme based on communication is proposed, which use the contrary change rate of current before and after the fault point during the transient process of capacitor discharge as the protection criterion. Finally, the feasibility of the proposed method is verified by simulation with PSCAD/EMTDC, and it proves the scheme has certain superiority, avoiding problems such as the setting and matching difficulties in conventional current protection methods.

Details

Title
Rate-of-Current Based Protection for DC Distribution Network
Author
Ding, Fanfan 1 ; Zhang, Dahai 1 ; Zhang, Qiufang 1 ; Sheng, Wanxing 2 ; Wu, Ming 2 ; Song, Zhenhao 2 

1  School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China 
2  China Electric Power Research Institute, Beijing, 100192, China 
Publication year
2018
Publication date
Jul 2018
Publisher
IOP Publishing
ISSN
17551307
e-ISSN
17551315
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1755-1315/170/4/042083
ProQuest document ID
2559515884
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.