A Protection of interconnection transformer for DG in Korea distribution power system

Author

Won Sik Moon ; Jae-Sun Hur ; Jae-Chul Kim

Author_Institution

Dept. of Electr. Eng., Soongsil Univ., Seoul, South Korea

fYear

2012

fDate

22-26 July 2012

Firstpage

1

Lastpage

5

Abstract

The interconnection transformers are used to interconnect a distributed generation (DG) units with the existing power system. The transformer connections play a key role in how the DG unit affects the utility system and how the utility system affects the DG unit. The interconnection of DG with the power distribution system, however, creates many challenges for utilities. These challenges are related to the types of transformer connection and ground for interconnecting DG. This paper discusses the effect of the transformer connection and ground on the Korea distribution power system. In addition, this paper analyzes the causes of protection interruption that occurs frequently in Korea distribution power system with interconnecting DG. The paper also suggests the protection configuration of interconnection transformer to solve the protection interruption.

Keywords

distributed power generation; earthing; power distribution protection; power system interconnection; power transformer protection; DG; Korea distribution power system; distributed generation; grounding; interconnection transformer protection interruption; transformer connection; utility system; Circuit faults; Distributed power generation; Educational institutions; Fault currents; Integrated circuit interconnections; Power systems; Voltage control; DG Interconnection; Interconnection transformer; Protection; Transformer Connection; Zero-sequence Current;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting, 2012 IEEE

Conference_Location

San Diego, CA

ISSN

1944-9925

Print_ISBN

978-1-4673-2727-5

Electronic_ISBN

1944-9925

Type

conf

DOI

10.1109/PESGM.2012.6344779

Filename

6344779