Mr. Partal graduated from Teesside University in the field of Electrical Engineering and completed his post-graduate degree in Advanced Manufacturing Systems at this same university. He worked as a Power Systems Engineer at EDF Energy Networks Branch, one of the Power Distribution System Operators in England and later at National Grid Electricity Transmission as a Senior Power Systems Specialist, also serving as Department Head of the System Technical Performance. He continued his career at Turkish Electricity Transmission Corporation. Currently, he is member of Cigre WG C4.67, representing ADM electricity distribution company. His expertise lies in insulation coordination (lightning protection), grounding systems, and steady-state power quality.
High Ground Flash Density in certain regions can adversely impact performance of transmission lines and lightning studies must therefore be conducted regularly to ensure the system is at best performance and giving continuous supply to users. This presentation explains procedures for evaluating performance of 154 kV overhead lines, based on experience in Turkey. Historical tripping data is analyzed and compared to the international standard as well as other utility practices. Approaches to evaluate performance involving software simulations are also considered, as is lightning stroke data that is compared with tripping pattern. Finally, meaures are proposed to reduce OHL tripping due to lightning.