添加气体的运输特性对SF6混合气体绝缘性能的影响

The four parameters transport theory of gas is established based on the PT experiments. The transport coefficients (electron drift velocity, diffusion coefficient, detachment coefficient, conversion coefficient, ionization coefficient, attachment coefficient) are measured by PT experiment. The effect of transport characters on the discharge and electrical insulation performance of SF6 gas mixtures is analyzed. Electron transport process of several SF6 gas mixtures is simulated by Monte Carlo method. The correctness and apply range of four parameters theory are also validated by Monte Carlo simulation. The impact of transport characters on the gas discharge performance and cooperation effect of SF6 gas mixtures is carefully analyzed. Several SF6 gas mixtures which is suitable to electrical insulation, laser technique and plasma technique are deduced out by the experiments and simulation. The conclusion has clearly academic value and innovation and can be obvious guidance in electrical insulation, laser technique and plasma technique domain.

添加一些气体到SF6中，可改变SF6的放电特性，有些气体可改善SF6的绝缘性能。以往的研看蠖嗍谴雍晏迳涎芯縎F6混合气体的耐电强度。现在的研究拟采用脉冲汤逊法，并创建新的四参数的气体输运数学模型，测量和计算添加气体和SF6混合气体的微观输运参数，分析气逯械氖湓颂匦远許F6混合气体协同效应的影响机理和改善SF6对局部高场强敏感的机理