LIU Haojun, GONG Ruilei, WANG Shuhong, et al. Improvement Design of 252 kV Branch Busbar Structure[J]. High voltageapparatus, 2014, 50(10): 112-115. DOI: 10.13296/j.1001-1609.hva.2014.10.044.
This article carries out an improvement design of 252 kV branch busbar structure. The internal electric field distributions after the improvement are calculated by using ANSYS quasi-electric field module.The improved busbar successfully withstands 460 kV power frequency voltage with duration of 1 minute and 1 050 kV lightning impulse voltage with 15 times respectively for both positive and negative polarities under 0.3 MPa relative gas pressure. Due to this improvement
the insulation margin of 252 kV branch busbar is enhanced
and the production cost of the manufacture is greatly reduced.