环保气体HFO-1336mzz(E)及其混合气体的绝缘性能研究

In recent years, a variety of novel environmental-friendly gases and their mixtures have received attention as potential SF₆ replacement gases. In this paper, HFO-1336mzz(E) is proposed as an insulating gas to be applied in power equipment. Firstly, based on the experimentally measured saturation vapor pressure data, the saturation vapor pressure characteristics of HFO-1336mzz(E) and its mixtures are investigated and analyzed, using Antoine equation and the gas-liquid equilibrium law, and compared with C4-PFN and C5-PFK gases. Based on the mixing ratio determined by the saturation vapor pressure characteristics, the electron swarm parameters of HFO-1336mzz(E) and its gas mixtures were measured using pulsed Townsend experiments, and the dielectric strength of the gas was determined accordingly. The results show that when the mixing ratio of HFO-1336mzz(E) reaches 60%, the gas mixture with CO₂ or dry air can achieve the similar insulation strength of SF₆. The results provide significant fundamental data and references for further research and application of the new environmental-friendly gas HFO-1336mzz(E).