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Wyszukujesz frazę "Zhang, Yujie" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
The mining of high risk equipment based on the algorithm of HR-Tree’s decision
Autorzy:
Wang, Shanyuan
Zhang, Yujie
Li, Yao
Gao, Suisui
Yang, Feiling
Powiązania:
https://bibliotekanauki.pl/articles/329680.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
high-risk equipment set
HR-Tree
minus branch
early warning
system elektroenergetyczny
monitorowanie
wczesne ostrzeganie
Opis:
Due to the different construction of various subsystems in the power grid, the information of various systems are not closely connected. Nowadays, the network is complex and changeable where the automation is getting higher. This article takes high-risk equipment set of substation in Liaoyang as the research background. It constructs HR-Tree for the device set, and establishes a high-risk equipment evaluation system which based on the HR-Tree context. Then we calculate high-risk equipment sets in the structure of overall data set. By establishing the original data set and the prior knowledge system of equipment risk, the non-candidate high-risk equipment set is reduced in the local path of the high-risk equipment set. We refer to the process of reducing data as minus branch. After the threshold is established, the branches are reduced and the highest risk equipment set is obtained. Finally, we use the scoring system to find the probability of occurrence of associated devices, such information is more open. Example showed that such methods could effectively express high-risk device sets, and managers could get early warning information based on this. It helps people monitoring the power system, w hich could also provides new ideas for the monitoring project.
Źródło:
Diagnostyka; 2020, 21, 2; 51-59
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of transformers condition based on Bayes-discriminant method with fault-tree fuzzy evaluation
Autorzy:
Li, Dianyang
Wang, Shanyuan
Zhang, Yujie
Feng, Jian
Wang, Hongzhe
Qin, Ling
Powiązania:
https://bibliotekanauki.pl/articles/328004.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
oil-immersed power transformers
fault tree analysis
fuzzy-evaluation system
Bayes-discriminant
health-operation
transformator mocy
system monitorowania
analiza drzewa błędów
Opis:
China's electric power construction is renewing Increasingly, and the network is complex and changeable where the automation is getting higher. In this paper, Fuzzy evaluation system is established according to fault tree, and the estimation of transformer’s state is judged by analytic hierarchy process. Bayes-discriminant and discriminant formula are used to discriminate transformer’s attributes, which are based on historical data. The machine identification of transformer faults combines the fuzzy evaluation and Bayes-discriminant. It’s accuracy can be improved by correcting parameters. This method can effectively avoid subjective interference caused by artificial weights. The example shows that this method could be applied to judge health status of electric power equipment and this method can play an early-warning role in the operation of monitoring system.
Źródło:
Diagnostyka; 2020, 21, 2; 3-12
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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