Turnout fault judgment method based on fault tree analysis

The invention provides a turnout fault judgment method based on fault tree analysis, which is characterized by comprising the following steps: (1) establishing a turnout fault tree model; historical data collected by a monitoring system in the operation process of different types of turnouts are collected and classified according to alternating-current and direct-current voltages and the number of point switches; establishing a turnout fault tree model according to the collected historical data and different types of turnout electrical characteristics; performing qualitative analysis on the turnout fault tree model, and determining the influence degree of each fault event; (2) carrying out fault source positioning based on the turnout fault tree model; and positioning a possible fault source under the diagnosis of the turnout fault tree model according to the electrical characteristic information collected from the monitored object. According to the method, the fault tree analysis theory is applied to turnout