Circuit breaker opening accessory life prediction method based on actuation time and driving energy

• Main Authors: WANG ZEWEI, JI WEIZHEN, WEI SHUO, YANG FEILONG, SUN SHUGUANG, SUN LIANG, SHAO XU, LIU JINFA, WANG JINGQIN
• Format: Patent
• Language: Chinese; English
• Published: 25.11.2022
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to a circuit breaker opening accessory life prediction method based on actuation time and driving energy, which comprises the following steps: firstly, preprocessing original vibration to obtain a noise-reduced vibration signal; secondly, framing the denoised vibration signal, calculating the short-time energy entropy ratio of each frame of signal, calibrating each action stage in the vibration process based on the short-time energy entropy ratio, calculating the action time and the driving energy of each action stage, and taking the action time and the driving energy as performance degradation indexes; screening through a Spearman rank correlation coefficient method to obtain a performance degradation index with high correlation with the degradation capability, and obtaining a key performance degradation index; and finally, according to the key performance degradation index, establishing a circuit breaker opening accessory residual life prediction model based on a binary Wiener process.