Analysis of Early Warning for Contact Status of Cable Joints in Switchgear Based on ANSYS

The switchgear is crucial in the reception and distribution of electrical energy within the power system. The occurrence of poor contact at the cable joints of the switchgear poses a significant risk to the safety of the power system. This issue is primarily attributed to unreasonable design and incomplete existing processes, accelerating equipment insulation aging. Based on the principles of finite element theory analysis, this study aims to establish a comprehensive mathematical model to investigate the phenomenon of hot spot coupling in switchgear cable joints. The primary objective is to analyze the temperature distribution within the switchgear system under abnormal local contact conditions of cable joints. Additionally, the simulation results will be validated through experimental testing. This study aims to summarize and extract the relevant laws governing the prediction of temperature in cable joints. By establishing a fitting equation, this research aims to provide a foundation for detecting anomalies through daily monitoring.