Fuzzy Fault Tree Analysis Method and Its Application in Fault Diagnosis of Denitration System in Thermal Power Plant

2020 ◽  
Author(s):  
Xiong Wei ◽  
Xianxun Zhu ◽  
Xu Wang ◽  
Zhiyang Zhao ◽  
Jiancun Zuo
Keyword(s):  
Fault Diagnosis ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Analysis Method ◽  
Tree Analysis ◽  
Fuzzy Fault Tree Analysis

Analysis of Mine Hoist System Monitoring and Fault Diagnosis

2014 ◽  
Vol 615 ◽  
pp. 113-117
Author(s):  
Jian Yun Bai ◽  
Li Peng Yan
Keyword(s):  
Fault Diagnosis ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Brake System ◽  
Analysis Method ◽  
System Monitoring ◽  
Tree Analysis ◽  
Fuzzy Fault Tree Analysis ◽  
Safety And Reliability ◽  
Mine Hoist

This paper is Zhengli Coal JKMD3.5 × 4 (III) E-type floor-type multi-rope friction hoist for the study, in order to enhance the system to improve monitoring and fault diagnosis for the purpose of fuzzy fault tree analysis method as the lift system the method of fault diagnosis on hoist brake system fault tree analysis, the results of the analysis can play a guiding role in the daily repair and maintenance, thereby enhancing the safety and reliability of the hoist.

A novel ranking function-based triangular intuitionistic fuzzy fault tree analysis method

2020 ◽  
Vol 39 (3) ◽  
pp. 2753-2761
Author(s):  
Hui Zhou ◽  
Haiping Ren
Keyword(s):  
Fault Tree ◽  
Fault Tree Analysis ◽  
Ranking Function ◽  
Analysis Method ◽  
Tree Analysis ◽  
Factors Affecting ◽  
Intuitionistic Fuzzy Numbers ◽  
Intuitionistic Fuzzy ◽  
Operational Laws ◽  
Fuzzy Fault Tree Analysis

In reliability field, the probabilities of basic events are often treated as exact values in conventional fault tree analysis. However, for many practical systems, because the concept of events may be ambiguous, the factors affecting the occurrence of events are complex and changeable, so it is difficult to obtain accurate values of the occurrence probability of events. Fuzzy sets can well deal with these situations. Thus this paper will develop a novel fault tree analysis method in the assumption of the values of probability of basic events expressed with triangular intuitionistic fuzzy numbers. First, a new ranking function of triangular intuitionistic numbers is established, which can reflect the behavior factors of the decision maker. Then a novel fault tree analysis method is put forward on the basis of operational laws and the proposed ranking function of triangular intuitionistic numbers. Finally, an example of weapon system “automatic gun” is employed to show that the proposed fault tree analysis method is feasible and effective.

Application of Fuzzy Fault-Tree Analysis to Assess the Reliability of a Protection System for a Switchyard

2008 ◽  
Vol 9 (4) ◽  
Author(s):  
Ying-Yi Hong ◽  
Lun-Hui Lee ◽  
Heng-Hsing Cheng
Keyword(s):  
Power Plant ◽  
Fuzzy Set ◽  
Nuclear Power ◽  
Fault Tree ◽  
Reliability Assessment ◽  
Fault Tree Analysis ◽  
Protection System ◽  
Importance Measure ◽  
Tree Analysis ◽  
Fuzzy Fault Tree Analysis

This paper proposed a method for reliability assessment of the protection system for a switchyard by fault-tree analysis considering uncertainty of unavailability for an element. Unavailability of an element with uncertainty is expressed with the fuzzy set. The fault-tree analysis incorporated with the fuzzy set is employed to conduct the reliability assessment. The importance of elements influencing reliability can be achieved by the Fuzzy Importance Measure. Compared with traditional methods, the fault-tree analysis requires less computation. In this paper, a 345 kV switchyard in the 3rd nuclear power plant in Taiwan serves as an example for illustrating the results of the proposed method.

scholarly journals Fuzzy Fault Tree Analysis for Fault Diagnosis of Cannula Fault in Power Transformer

2011 ◽  
Vol 02 (11) ◽  
pp. 1346-1355 ◽  
Author(s):  
Sanjay Kumar Tyagi ◽  
Diwakar Pandey ◽  
Vinesh Kumar
Keyword(s):  
Fault Diagnosis ◽  
Power Transformer ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Tree Analysis ◽  
Fuzzy Fault Tree Analysis
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