UM
Estimation of maximum interval hybrid entropy of sensitive equipment failure rate due to voltage sag
Zhao H.3; Xiao X.3; Li Z.1; Wang Y.3
2011-10-01
Source PublicationDianli Zidonghua Shebei/Electric Power Automation Equipment
ISSN10066047
Volume31Issue:10Pages:70-75
AbstractAccording to the transition process of equipment fault status, all kinds of status excluding normal and complete fault status are considered as incomplete fault status and the possibility of equipment failure due to voltage sag is evaluated. The voltage tolerance level of sensitive equipment is characterized by the interval data and, combined with the randomness of voltage sag, the interval possibility of incomplete fault status is determined. To more comprehensively take the complexity and uncertainty into account, the hybrid entropy is used to measure the randomness and fuzziness of practical voltage sag and the model of maximum interval hybrid entropy is developed to estimate the equipment sensitivity under certain conditions and to obtain the point probability of equipment failure rate. Comparison with the measured data of personal computer failure rate due to voltage sag shows that, the results in small samples are quite accurate. The simulation for IEEE 33-bus system proves the effectiveness of the introduced method.
KeywordEntropy Equipment sensitivity Estimation Failure rate Interval probability Models Point probability Power quality Voltage sag
URLView the original
Language英語
Fulltext Access
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hongye Electric Power Group Co., Ltd
2.Smart Grid Key Laboratory of Sichuan Province
3.Sichuan University
Recommended Citation
GB/T 7714
Zhao H.,Xiao X.,Li Z.,et al. Estimation of maximum interval hybrid entropy of sensitive equipment failure rate due to voltage sag[J]. Dianli Zidonghua Shebei/Electric Power Automation Equipment,2011,31(10):70-75.
APA Zhao H.,Xiao X.,Li Z.,&Wang Y..(2011).Estimation of maximum interval hybrid entropy of sensitive equipment failure rate due to voltage sag.Dianli Zidonghua Shebei/Electric Power Automation Equipment,31(10),70-75.
MLA Zhao H.,et al."Estimation of maximum interval hybrid entropy of sensitive equipment failure rate due to voltage sag".Dianli Zidonghua Shebei/Electric Power Automation Equipment 31.10(2011):70-75.
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