Research on the Temperature Real-time Monitoring Technology of High Voltage Disconnectors

The online temperature measurement technology is analyzed and verified in this paper based on power supplied by the inductive current and wireless communication technique combined with the structure and principle of disconnector, solving problems in the online temperature measure system such as wireless data transmission, sensor operating supply and equipment high reliability in an environment of high voltage and strong electromagnetic. The temperature distribution of disconnector contact is analyzed in this paper under different influential factors by means of numerical simulation calculation of temperature field and temperature rise test. Contact materials of various kinds, loop resistance in defect situation as well as the corresponding relation between loop resistance and contact temperature are designed in this paper. The temperature real-time monitoring technology with low cost and high efficiency is researched in this paper. Defects of abnormal heating are discovered in time, which is of great significance for ensuring the safe operation and improving power distribution reliability.