Three dimensional simulation of the arc inside an insulator-arrester with a multichamber system

Zhiwei Guo,Xinping Long,Zhongdong Qian,Ning Qiu

doi:10.1063/1.4948453

Abstract

Based on the thermo-physical properties of plasma air, the temperature and flow fields of an insulator–arrester with a multi-chamber system are investigated using three-dimensional computational fluid dynamics. The plasma flow is assumed to be steady incompressible laminar flow and in local thermodynamic equilibrium. The results obtained show that the arc inside the chamber bends downwards, indicating that the Lorentz force induced is directed away from the exit and pushes plasma air down. The outlet also provides passage for plasma flow both in and out of the chamber.

Highlights

Based on the thermo-physical properties of plasma air, the temperature and flow fields of an insulator–arrester with a multi-chamber system are investigated using three-dimensional computational fluid dynamics
The multi-chamber system (MCS) can guarantee protection of the power line by releasing the lightning current through one of these three paths in the shortest time possible and quenching the subsequent current; clearly, the component is very important for power line systems
The schematic of the experimental setup (Fig. 2) shows that the MCS comprises many electrodes embedded in a silicon rubber strip

Summary

Introduction

Based on the thermo-physical properties of plasma air, the temperature and flow fields of an insulator–arrester with a multi-chamber system are investigated using three-dimensional computational fluid dynamics. The results obtained show that the arc inside the chamber bends downwards, indicating that the Lorentz force induced is directed away from the exit and pushes plasma air down.

Results

Conclusion