Device and method for monitoring electrical equipment for electrical contact overheating

A device for monitoring electrical equipment for electrical contact overheating, comprising:

• a gas collection device used for collecting gas in a space where the electrical equipment is located;
• a gas detection device comprising a gas sensor array for different characteristic gases and used for detecting different characteristic gases of the collected gas;
• a data storage device used for storing a response threshold of each gas sensor during normal operation of the electrical equipment, a maximum received energy threshold of a conductor material of the electrical equipment, a received energy value of an electrical contact portion of the electrical equipment, and an electrical contact temperature value of the electrical equipment;
• a data processing device comprising a preprocessing device and a comparison device, wherein the preprocessing device is used for preprocessing a detection result of the gas detection device, and determining the response value of each gas sensor and the electrical contact temperature value of the electrical equipment according to the preprocessing result;
• and the comparison device is used for calculating an energy accumulated value received by the electrical contact portion of the electrical equipment according to the response value of each gas sensor, respectively comparing the response value of each gas sensor and the energy accumulated value received by the electrical contact portion of the electrical equipment with the response threshold of each gas sensor stored in the data storage device and the maximum received energy threshold of the conductor material of the electrical equipment, and outputting the comparison result;
• and
• a display and early warning device used for displaying the name of the detected characteristic gas and the possible overheating temperature and giving out necessary early warning information according to the comparison result.