This paper presents a new approach for fault detection and classification in transmission line using Decision Tree (DT). The DT based fault detection algorithm uses 1/4th cycle data of fault currents from fault inception, to generate the optimal decision tree for fault detection. Similarly, the DT based classification algorithm takes half cycle data from fault inception of three phase currents ...

Fault tree analysis (FTA) has been used in the chemical process industry (CPI) for systematic safety and reliability analysis during the past decades. Conventional manual construction of fault trees can be extremely time consuming and vulnerable to human error. A computer-aided fault tree synthesis methodology can be an initial step, or as an independent check to assist or supplement manual FTA...

Fault trees provide a graphical and logical framework for analyzing the reliability of systems. A fault tree provides a conceptually simple modeling framework to represent the system-level interactions between component reliabilities. Dynamic fault trees have been shown particularly useful for reliability analysis of embedded computer systems. Dynamic fault trees are a superset of traditional (...

Fault Tree Analysis is a very popular technique to assess safety and reliability of technical systems. However, being a combinatorial model, Fault Trees can only express which combinations of failures contribute to a certain hazard or accident. There is no means to model sequences of actions and temporal orders of states and events. Since today technical systems are often controlled by software...

We have presented trapezoidal intuitionistic fuzzy number. Arithmetic operations of trapezoidal intuitionistic fuzzy number is presented based on (α, β)-cuts. We have presented intuitionistic fuzzy fault tree analysis using trapezoidal intuitionistic fuzzy number. In application of intuitionistic fuzzy fault tree analysis, we have computed failure of fire protection system taking failure of eac...

Computer diagnosis systems grounded on hand-crafted fault trees are widespread in industrial practice. Since the complexity of technical systems increases and innovation cycles get shorter, the need for systematic fault tree generation and maintenance arises. In this paper, the MAD system is introduced which generates fault trees based on models of technical devices. Since a fault tree can be g...

The fault tree analysis tool Metaprime allows reliability engineers to make, in an interactive way, exact qualitative and quantitative analysis of very complex fault trees that could not be completely treated by previously available analysis technologies. The qualitative aspect of the analysis of a fault tree consists in computing all or part of the set of prime implicants (i.e., minimal cut se...

The process of fault dictionary compaction can lead to a loss of information that is potentially useful in locating unmodeled failures. The focus of this paper is on developing alternative storage structures that can efficiently represent full fault dictionaries without discarding any information. We present the problem of storing the full fault dictionary storage as a labeled tree encoding pro...

Fault tree analysis is a well-known method for reliability and safety assessment of engineering systems. In the last 3 decades, a number of methods have been introduced, in the literature, for automatic construction of fault trees. The main difference between these methods is the starting model from which the tree is constructed. This paper presents a new methodology for the construction of sta...