Fault diagnosis of multi-compensation capacitors based on amplitude characteristics

The amplitude envelope model of locomotive signal induced voltage is established, and the TCR receives the amplitude characteristics of each segment in the track circuit bounded by the position of compensating capacitor, and find out the characteristic value of each segment, to achieve the initial diagnosis[1]. For the case of false alarm at the critical point, a second diagnosis method is proposed under the constraint of the first derivative. To realize the accurate and fast diagnosis of multi-compensation capacitor fault at the same time.