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http://dx.doi.org/10.14346/JKOSOS.2017.32.1.41

Minimal Cut Set of Electric Power Installations using Fault Tree Analysis  

Park, Young-Ho (Dongyang University)
Kim, Doo-Hyun (Department of Safety Engineering, Chungbuk National University)
Kim, Sung-Chul (Department of Safety Engineering, Chungbuk National University)
Publication Information
Journal of the Korean Society of Safety / v.32, no.1, 2017 , pp. 41-46 More about this Journal
Abstract
In this paper, from making an electrical fire which is thought to be the most damaging among potential dangers as a top event, minimal cut sets (MCS) about it were analyzed. For this, components of a power substation were classified into 15 items. Failure rates and modes were extracted based on Korea Electrical Safety Corporation, IEEE Gold Book, and RAC. To analyze the top event (an electrical fire), main events were assorted into "safety devices for overcurrent" and "ampere meter of detecter". Failure of components was divided into failure of VCB, COS, and MCCB. A fault tree was composed of 3 AND gate, 5 OR gates and 17 basic events. Overlapped events among the basic events are things which occur from relevant components. They were attached to the tree by distinguishing identifiers. In case of FT, two minimal cut sets of "IO_METER", "MF_METER", "DO_MCCB" and "IO_METER", "MF_METER", "DO_VCB" take 46% of electrical fires. Therefore, about basic events which are included in the top two minimum cut sets, strict control is necessary.
Keywords
FTA(fault tree analysis); MCS; power installations; overcurrent; failure rate;
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  • Reference
1 Y. -S. Kim and K. -M. Shong, Investigation of Facility Accident and Suggestion of Guide Line for Accident Process on 22.9kv Class Electrical Installation, Symposium the Autumn of The Korean Institute of Electrical Engineers (KIEE), pp.137-138, 2009.
2 B. Ku, J. -M. Cha and H. Kim, Reliability Analysis of Distribution Systems by using FTA, Symposium the autumn of The Korean Institute of Electrical Engineers (KIEE), pp.247-249, 2008.
3 Korea Electrical Safety Corporation, A Technical Guidebook for Preventing Possible Failures/Accidents based on the Case Studies in a 22.9 kV Electrical Installation, pp.128-150, 2009.
4 H. -K. Lim, System Safety Engineering, Hansol Academy, pp.146-147, 2012.
5 IEEE Gold Book, Design of Reliable Industrial and Commercial Power Systems, pp.259-300, 2007.
6 Reliability Analysis Center, Non-electronic Parts Reliability Data, 2011.
7 Ohmsha., Introduction to Electrical Work of an Electrical Engineer, pp.44-49, 1993.
8 FRONTIS, Introduction of PTC Windchill Quality Solutions, 2016.
9 Korea Electrical Safety Corporation, http://www.kesco.or.kr, Electrical Safety Portal System, Electrical Fire Statics, 2016.