《IEEE Transactions on Power Delivery》
Experimental evaluation of a UHV tower model for lightning surge analysis
作者:
T Yamada，A Mochizuki，J Sawada，E Zaima，T Kawamura
关键词:
power transmission and distribution；power transmission towers；lightning；functional models；uhv ac systems；overhead power transmission；electric potential；electrical transients；flashover
摘要:
An experimental investigation was performed on UHV tower model for the EMTP multiconductor calculation or lightning overvoltage at substations associated with back-flashover at an adjacent transmission tower. The various lightning surge response characteristics were measured on an actual UHV tower, and parameters of a multistory transmission tower model that can reproduce voltages across the insulator strings, voltages of the crossarms, and voltages of the power lines were determined. A value of 120 {Omega} was determined as the surge Impedance at each section or the multistory tower model, which closely agreed with the tower surge Impedance measured for the UHV tower alone.
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