Affiliations: [a] School of Electrical Engineering, Shandong University,
Jinan, Shandong, China | [b] State key Lab of Alternate Electrical Power System
with Renewable Energy Sources, North China Electric Power University, Beijing,
China
Correspondence:
[*]
Corresponding author: Haoxi Cong, School of Electrical
Engineering, Shandong University, Jinan 250061, Shandong, China. E-mail:
[email protected]
Abstract: Secondary arc is a complicated and critical physical phenomenon with
power transmission lines. An arc chain model was employed with a view to
establish the governing velocity equations, in which the multiple forces
impacts upon each element were specifically incorporated including
electromagnetic force, wind load, air resistance and thermal buoyancy. Based on
the proposed model for secondary arc dynamics, simulations were then carried
out and further validated through physical experiments on a test platform,
which showed good coincidence between the two. The research can provide
fundamentals for understanding the physical nature especially the extinction
mechanism of secondary arcs, and lays theoretical basis for optimal design of
the transmission lines' auto-reclosing strategy.
