Analysis on Arc Movement in the Gap Between Parallel Insulator Strings Based on Reynolds Stress of Current Element [考虑电流元雷诺应力的绝缘子串并联间隙电弧运动特性分析]

作者：Liao Y.; Hu C.; Tang J.; Liu G.

来源：High Voltage Apparatus, 2019, 55(10): 169-175.

DOI：10.13296/j.1001-1609.hva.2019.10.028

• Chain model
• Electrode length
• Inclination angle
• Magnetic force
• Motion characteristics
• Parallel gap
• Reynolds stress

A current element motion model of magnetic force, air resistance, thermal buoyancy and Reynolds stress is established on the basis of the chain model of electric arc, in which the interacting force between current elements is considered and the Reynolds equation of the current element in arc movement is introduced. The arc movement process in the gap between the parallel insulator strings of a 500 kV overhead transmission line is simulated with typical parameters, and the results are compared with the test data. It is revealed that the present arc movement model considering the interaction between current elements is more consistent with the actual situation, compared with other models. The larger the inclination angle of the gap electrode is, the greater the magnetic forces of the upper arc root and the arc column become; and longer horizontal electrode is more conducive to the guidance for the arc.

• 单位
  南方电网科学研究院有限责任公司; 华南理工大学