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Development of Thermal Precursor DB for Partial Disconnection and Poor Contact on Electrical Wire  

Kim, Doo-Hyun (Department of safety Engineering, Chungbuk National University)
Kim, Sung-Chul (Department of safety Engineering, Chungbuk National University)
Lee, Jong-Ho (Division of Fire Service Adminstration, Wonkwang University)
Kang, Dong-Kyu (Samsung Electronics)
Publication Information
Journal of the Korean Society of Safety / v.24, no.2, 2009 , pp. 30-36 More about this Journal
Abstract
This paper aims at the precursor analysis and DB development of electrical fires based on thermal and current signals for partial disconnection and poor contact on electric wires through experiments and simulations. Also, DB system required for developing the precursor DB with these data was studied and designed. Firstly, in case of partial disconnection, characteristics were derived and analyzed by experiment and electrical-thermal finite element method(Flux 3D) on the model wires which consist of VCTF and IV electric wires. Based on the characteristics, About 351 partial disconnection precursor patterns were generated by the thermal analysis for electric wire according to deterioration time under normal state and 200% overload state of rated current. Secondly, in order to develop poor contact precursor patterns, temperature value and the current signal were considered. In simulating the poor contact situation on connector area of MCCB, connection torque was changed. Through the experimental analysis, about 251 poor contact precursor patterns were generated. Finally, Using thermal precursor patterns obtained by partial disconnection and poor contact, electrical fire thermal precursor DB was developed.
Keywords
partial disconnection; poor contact; precursor; thermal analysis; flux 3D;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Michael R, Yenchek 'Thermal Modeling of Portable Power Cables', IEEE, 1997
2 이형준,'차단기 및 단자대 접속부의 접촉 불량으로 인한 전기화재 위험성 분석', 충북대학교 석사학위논문, pp.34-36, 2008
3 대한전기협회, 내선규정, 2006
4 한국산업규격,'KSC 3302',2006
5 김성철,'열과 전류신호에 의한 전기화재 전조 분석 및DB개발', 충북대학교 박사학위논문,pp.15-17,2008
6 한국전기안전공사 전기안전연구원, '배선용 및 기기용전선의화재위험성에 관한 연구',2001
7 한국산업규격,'KSC 3304',2006
8 최충석, '전기화재의 종류 및 원인 분석', 대한전기협회, 제300호 pp.27-36,2001
9 송길목, 최충석, 김동우, 곽희로, '구부림 피로에의한 연선의 반단선 특성 해석', 한국화재.소방학회, pp464-467, 2003
10 오홍석, '전기화재발생원인 및 분석에 관한 연구'(전선의 열해석을 통하여), 한국화재.소방학회, 제16권, 제4호, pp.72-76,2002
11 김성철, 김두현,'과부하 및 물리적 손상(반단선)에 의한 전선의 열적특성 해석', 한국산업안전학회, 제22권, 제4호, pp.9.2007   과학기술학회마을
12 소방방재청, 'http://www.nema.go.kr/' (전기 화재 통계), 2007