Experimental investigation of the effect of temperature on the surface discharges occured on insulators

The lack of energy resources in response to the increasing energy demand with increasing population and technological developments forces researchers to reduce the electrical losses in existing electricity generation, transmission and distribution systems. One of the electrical losses in such electrical systems is the surface discharges which occurred between solid insulators and gas insulating materials like air. In this study which aimed to reduce electrical losses, some studies have been carried out on the effect of temperature on the surface discharge occur on an insulator surface. The voltage values were increased for each temperature value until the surface discharge was ignited and rapidly reduced to zero with the release of the discharge (to prevent damage to the insulator surface). Similarly, the same applications are repeated for different frequency and different temperature values. Both voltage-dependent and frequency-dependent Voltage-Current graphs are created and interpreted. The results show that the insulator surface temperature, which varies depending on the surface temperature, has a significant effect on the surface discharge. It has been found that discharging occurs at lower stress levels under both high and low surface temperature conditions. However, the low surface temperature was found to be a more significant parameter on surface discharge than the high-temperature parameter.