A research on the characteristics of fault current of DC distribution system and AC distribution system

Author

Byeon, G. ; Lee, H. ; Yoon, T. ; Jang, G. ; Chae, W. ; Kim, J.

Author_Institution

Korea Univ., Seoul, South Korea

fYear

2011

fDate

May 30 2011-June 3 2011

Firstpage

543

Lastpage

550

Abstract

In this paper, research on the comparison of the fault characteristics of the direct current (DC) distribution system and the alternating current (AC) distribution system has been conducted. Since the DC distribution system is a promising topology to be used in future smart distribution systems having high efficiency and reliability, it is expected that there would be an increase in the installation of DC distribution systems in houses and buildings. For the analysis, DC and AC networks to be analyzed are implemented using PSCAD/EMTDC. Simulation results show that the DC distribution system has several benefits compared to the regular AC distribution system such as improved voltage drop and power quality characteristics at the customer-end during a disturbance. This is because the DC/DC converters of DC distribution system can mitigate voltage fluctuations caused by disturbance and increase power quality.

Keywords

DC-DC power convertors; fault currents; power distribution faults; power distribution reliability; power supply quality; AC distribution system; AC network analysis; DC distribution system; DC network analysis; DC-DC converters; PSCAD-EMTDC; alternating current distribution system; direct current distribution system; fault current characteristics; improved voltage drop; power quality characteristics; smart distribution systems; system reliability; voltage fluctuation mitigation; DC-DC power converters; Inverters; Load modeling; Switches; Topology; Voltage control; Voltage fluctuations; Converters; DC distribution system; Fault; PSCAD/EMTDC;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Conference_Location

Jeju

ISSN

2150-6078

Print_ISBN

978-1-61284-958-4

Electronic_ISBN

2150-6078

Type

conf

DOI

10.1109/ICPE.2011.5944603

Filename

5944603