WANG Wei1, HAN Jin-hua1, GUO Yun-ming2, et al. Analysis of a Burned-out Failure of Transformer Bushing[J]. High voltageapparatus, 2012, 48(2): 115-118+122.
WANG Wei1, HAN Jin-hua1, GUO Yun-ming2, et al. Analysis of a Burned-out Failure of Transformer Bushing[J]. High voltageapparatus, 2012, 48(2): 115-118+122. DOI: 10.13296/j.1001-1609.hva.2012.02.024.
according to the test phenomenon and field inspection
a typical burned-out failure of 550 kV transformer bushing in Henan Power Grid is introduced.The cause of the burned-out failure of the transformer bushing is found out to be insufficient pull of the draw rod through the disassembled inspection and structure analysis of the failed bushing.Relevant preventive measures such as testing pull force of draw rod and strengthening the technical exchange between manufacturers and users are provided.