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Reem A. Almenweer
School of Automation, Wuhan University of Technology, Luoshi Road No. 205, Wuhan 430070, China

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Journal article
Published: 25 November 2019 in Applied Sciences
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Gas insulated substations (GISs) are broadly used for transmission and distribution in electric power networks. Very fast transient overvoltage (VFTO) caused by SF6 discharge during switching operations in a GIS may threaten the insulation of electrical equipment. In this paper, a novel VFTO suppression method with great prospects in engineering, called the spiral tube damping busbar, is proposed. The suppressing mechanism of the new method is analyzed. The structure and the design characteristics of the damping busbar are introduced as well. Moreover, a calculation method for the self-inductance of the damping busbar at high frequency is presented. According to the structural characteristics of the damping busbar, the inductance effect on suppressing VFTO is analyzed. A further improvement in damping VFTO is investigated by designing a spiral litz coil connected in series with the busbar, which increases the damping effect. The simulation results show that the improved damping busbar has a significant suppressing effect on the amplitude and the frequency of VFTO.

ACS Style

Reem A. Almenweer; Yi-Xin Su; Wu Xixiu; Su Yixin. Numerical Analysis of a Spiral Tube Damping Busbar to Suppress VFTO in 1000 kV GIS. Applied Sciences 2019, 9, 5076 .

AMA Style

Reem A. Almenweer, Yi-Xin Su, Wu Xixiu, Su Yixin. Numerical Analysis of a Spiral Tube Damping Busbar to Suppress VFTO in 1000 kV GIS. Applied Sciences. 2019; 9 (23):5076.

Chicago/Turabian Style

Reem A. Almenweer; Yi-Xin Su; Wu Xixiu; Su Yixin. 2019. "Numerical Analysis of a Spiral Tube Damping Busbar to Suppress VFTO in 1000 kV GIS." Applied Sciences 9, no. 23: 5076.