Circulating Net Currents in Meshed DC Distribution Grids: A Challenge for Residual Ground Fault Protection

被引：21

作者：

Mackay, Laurens ^{[1
]}

Vandeventer, Elisabeth ^{[2
]}

Ramirez-Elizondo, Laura ^{[2
]}

机构：

[1] DC Opportun R&D BV, NL-2629 JD Delft, Netherlands

[2] Delft Univ Technol, NL-2628 CD Delft, Netherlands

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2018年 / 33卷 / 02期

关键词：

Power distribution faults; power system protection;

D O I：

10.1109/TPWRD.2018.2799478

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

In dc distribution grids, residual ground current protection is more feasible than in ac distribution grids, where stray capacitance leads to significant ac ground currents. However, when meshing de distribution grids, circulating net currents can appear that resemble residual ground currents and would trip traditional protection schemes. This letter introduces this phenomenon in both unipolar and bipolar de distribution grids. Furthermore, worst case net current magnitudes are derived and examples are shown. Implications for measurement and protection devices are discussed.

引用

页码：1018 / 1019

页数：2

共 7 条

[1]

[Anonymous], 2005, 64 TC

[2]

DC Microgrids-Part II: A Review of Power Architectures, Applications, and Standardization Issues [J].