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A Study on the Protective Coordination of Distribution Automation System under Loop Operation  

Lee, Hee-Tae (숭실대 공대 전기공학부)
Moon, Jong-Fil (숭실대 공대 전기공학부)
Kim, Jae-Chul (숭실대 공대 전기공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.7, 2009 , pp. 1281-1286 More about this Journal
Abstract
As a general radial configuration of power distribution system, the various researches have being studied to change a radial configuration to network one such as smart, intelligent and micro grid for loop operation. If a radial configuration changes to network, protective coordination comes to the biggest problem. When a typical protective algorithm is applied to loop distribution system protection, the interrupted section is expanded, therefore, reliability grows worse. This paper presents the new protective method being able to apply to loop distribution system with Distribution Automation System (DAS) which separate the minimal faulted section. Through contingency analysis of the sustained and momentary fault, we analyzed the influence for radial configuration and loop configuration using interrupted area and proved the effectiveness of proposed method.
Keywords
Loop Distribution System; Distribution Automation System; Protective Coordination; Reliability;
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