Experimental study on mechanical properties of UHV large tonnage disc type suspension insulator

In recent years, a number of UHV AC and DC power grids have been put into operation. The mechanical properties of large-tonnage disk-type suspended insulators for UHV lines are of great significance to the safe operation of the lines. In this paper, the operation performance of large tonnage disc suspension insulators in UHV ac and DC was evaluated by field sampling and mechanical properties test. The results of sampling test show that the mechanical properties of disc-shaped suspension insulators decrease to a certain extent during large tonnage transportation, which meets the operation requirements on the whole.