A condition assessment algorithm based on dynamic time warping for high-voltage circuit breaker

The paper presents an innovative algorithm for the analysis of the residual life of an high voltage circuit breaker. This algorithm relies on the measurements of the accelerometer and on the Dynamic Time Warping algorithm (DTW). The DTW is used to analyze the spectrogram of the acceleration measured, permitting an analysis both in time and frequency. The indexes created are then compared to the values registered during the initial phase, firing an alarm or a simple warning depending on the deviation. The algorithm is tested on two different circuit breaker, showing its effectiveness in predicting failures.