JIANG Bin, XIE Qiang, HE Chang, et al. Seismic Performance of Post Insulators in the Loop of DC Field Under Different Connection Modes[J]. High voltageapparatus, 2019, 55(6): 124-130.
JIANG Bin, XIE Qiang, HE Chang, et al. Seismic Performance of Post Insulators in the Loop of DC Field Under Different Connection Modes[J]. High voltageapparatus, 2019, 55(6): 124-130. DOI: 10.13296/j.1001-1609.hva.2019.06.018.
Seismic Performance of Post Insulators in the Loop of DC Field Under Different Connection Modes
To compare the influences of two connection modes on the seismic performance of the loop in DC field
a ±400 kV loop in a DC field in a converter substation is taken as the objective to establish a refined finite element model for analyzing its seismic performance. The seismic responses of the loop under different input ground motions are obtained. It is found that the location of insulator and the connection mode of loop have great influences on the seismic response of the insulators.It is concluded that the loop has an overall torsional effect under seismic action
and the dynamic responses of the insulators at both ends are larger. The integrity of the loop connecting with rigid tubular bus is better. The seismic response of the loop in rigid connection mode is more evenly distributed to each insulator than that inflexible connection mode. The integrity of the loop connecting with rigid tubular bus and 6-bundle conductors is poor. The seismic response of the equipment in the loop parallel to the weak axis increases obviously.And for nonlinear arrangement
the seismic response of the equipment in the loop parallel to the weak axis is greater.