ZHANG Yanlin, CHEN Hengqian, YANG Yanhua, et al. 3D Finite Element Simulation and Test Verification of High Voltage Apparatus Box on Roof of Bullet Train[J]. High voltageapparatus, 2022, 58(1): 89-95.
DOI:
ZHANG Yanlin, CHEN Hengqian, YANG Yanhua, et al. 3D Finite Element Simulation and Test Verification of High Voltage Apparatus Box on Roof of Bullet Train[J]. High voltageapparatus, 2022, 58(1): 89-95. DOI: 10.13296/j.1001-1609.hva.2022.01.012.
3D Finite Element Simulation and Test Verification of High Voltage Apparatus Box on Roof of Bullet Train
The high voltage apparatus box of bullet train is mounted on roof of the train in which many electrical equipment are integrated. However
the high voltage apparatus box with high integration keeps the layout of the equipment in the box very compact
which may cause concentration of electric field on the fittings of some equipment and lead to corona discharge. To analyze electric field distribution inside the high voltage apparatus box
a three-dimensional finite element(FE)model of the high voltage apparatus box is set up in this paper. The Finite element analysis of electrostatic field and transient electric field is adopted to calculate the overall electric field distribution in the high voltage apparatus box and its variation law with time at rated operating voltage and standard switch impulse voltage
respectively. For verifying accuracy of the finite element simulation
the potential measurement test of the high voltage apparatus box is performed. The floating potential of the fittings of high voltage disconnector in the box is measured at rated operating voltage. While
at the switching overvoltage the potential of five test points outside the box are measured. The test results show that
under different conditions
the relative error of simulation calculation and the test measurement is no more than 12.4% and the established 3 D finite element model is reasonable and effective.The analysis method in this paper can provide reference for the development and design of the high voltage apparatus box and can provide foundation for the simulation analysis for optimization of internal insulation structure of subsequent high voltage apparatus box.