Vibration Analysis and Experimental Study of GIS Busbar Enclosure under Electric Force

Abstract

To explore the vibration response of the GIS busbar enclosure in a strong electric field, the electric force on the busbar enclosure was solved by the voltage in the circuit and the principle of virtual work. The vibration mode was obtained by finite element technology. Accordingly, the vibration response of the busbar enclosure was obtained by vibration analysis in the frequency domain, and the vibration acceleration of the busbar was monitored in the substation. The simulation results showed that the busbar enclosure was subjected to the electric force because of the fundamental voltage and harmonic voltages in the conductor. By coupling the radial electric force and the vibration mode, it was found that the vibration responses of the busbar enclosure at 100 Hz and 2900 Hz were greater than those at other frequencies. The experimental result showed that the frequency with the highest vibration amplitude was the same as that of the simulation result, and the vibration acceleration amplitude in the experiment and simulation at 2900 Hz was basically consistent, which verified the accuracy of the simulation result. The study shows that the GIS enclosure shell will produce vibration at the two times power frequency and high frequency, which provides an explanation for the high-frequency vibration of busbar shell structure in the ultra-high-voltage substation and provides an objective basis for the design of the busbar enclosure in the ultra-high-voltage substation.

A Non-Invasive Circuit Breaker Arc Duration Measurement Method with Improved Robustness Based on Vibration–Sound Fusion and Convolutional Neural Network

“…In addition to the noise from the OM, vibrations originating from surrounding equipment and busbar can also be captured by the sensor. Their frequencies could fall below 3 kHz, since the frequencies focused by prior studies on the vibration of different power equipment, such as transformer [52], capacitor bank [53], and busbar [54], are all below 3 kHz. Moreover, it is worth noting that seismic waves may introduce noise as well, typically with frequencies below 100 Hz [55].…”

Modeling the Effects of Horizontal Transverse Vibrations on the Thermal Behavior and the Ampacity of Rectangular Bus Bars

“…The state-of-the-art references directly related to bus bars addressed the following research gaps: finite element method-(FEM-) based electrodynamic modeling of bus bars carrying high currents [11,12]; FEM-based modeling of bus bars in terms of coupling electromagnetic and thermal phenomena with fluid flow [13]; and vibration response of a bus bar enclosure considering the effect of a strong electric field [14]. In a broader context, these state-of-the-art studies have also closed research gaps, such as the effect of internal plate vibrations on heat transfer in a dryer [15]; visualization of a vibrating plate in a boiling bubble resonator [16]; mixed convection from a vertical plate subjected to periodic oscillations [17]; as well as the effect of vibrations on the phenomena of heat transfer and flow along heat exchange surfaces [18].…”