Research on Measurement Methods and Development of Dielectric Loss in High Voltage Electrical Equipment

This paper conducts an in-depth review on the measurement methods and development of dielectric loss in high-voltage electrical equipment. Firstly, the basic concept of dielectric loss and its importance in high-voltage electrical equipment are reviewed, pointing out that dielectric loss measurement is a key indicator for evaluating the insulation state of equipment. Subsequently, traditional dielectric loss measurement methods are systematically analyzed, including bridge method, resonance method, and digital measurement method, with detailed discussions on the principles, advantages and disadvantages, and application scope of each method. On this basis, the focus is on the emerging dielectric loss measurement technologies in recent years, such as high-frequency signal-based measurement methods, optical fiber sensing technology, and artificial intelligence-assisted diagnostic methods, and their application prospects are prospected. Finally, the challenges faced by current dielectric loss measurement technologies are summarized, such as environmental interference, equipment complexity, and measurement accuracy, and possible future development directions are proposed, including multi-physical field coupling measurement, research and development of intelligent and miniaturized measurement equipment, etc. This study provides theoretical reference and practical guidance for the further development of dielectric loss measurement technology for high-voltage electrical equipment.