Online monitoring and diagnosing method and device for air pressure and temperature of high-pressure sleeve, and storage medium

The invention provides an online monitoring and diagnosing method and device for the air pressure and temperature of a high-pressure sleeve, and a storage medium. The method comprises the following steps: collecting the pressure intensity value of gas in the high-pressure sleeve and the temperature value of a shell; calculating the molar density value of gas molecules in the high-pressure sleeve; converting the molar density value of the gas molecules into an equivalent air pressure value of a preset temperature value; and continuously monitoring the equivalent air pressure value, and diagnosing the equipment state according to a preset diagnosis threshold value. In addition, the invention provides high-voltage bushing equipment state diagnosis based on the moving range and the inter-phase gas molecule molar density imbalance degree. Through the technical scheme provided by the invention, 24-hour uninterrupted monitoring on the oil gas pressure value in the high-pressure sleeve is realized, the operation and