Hydrofluoroolefin HFO1234zeE (trans-1,3,3,3-tetrafluoroprop-1-ene) is an environmentally friendly gas insulating medium that has the potential to replace SF₆. To clarify the decomposition paths and products of an HFO1234zeE/N₂ gas mixture under partial discharge, the decomposition mechanism is explored with density functional theory. The results indicate that only HFO1234zeE molecules decompose in the range of low-temperature plasma, and electrons with different energies interact with molecules and cause them to decompose through different paths. Then, products are generated by free radical recombination, addition reactions and internal configurational conversions of the molecule. An experimental investigation of decomposition of the HFO1234zeE/N₂ gas mixture with different discharge modes is carried out, and it is found that the products calculated with density functional theory are consistent with those seen experimentally. The results show the decomposition mechanism of the insulating gas under partial discharge and provide a theoretical basis for the application of HFO1234zeE.

中文翻译：

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环保绝缘介质HFO1234zeE/N2混合气体局部放电分解机理

氢氟烯烃HFO1234zeE（反式-1,3,3,3-四氟丙-1-烯）是一种环境友好的气体绝缘介质，具有替代SF ₆的潜力。为了阐明HFO1234zeE/N ₂气体混合物在局部放电下的分解路径和产物，利用密度泛函理论探讨了分解机理。结果表明，只有HFO1234zeE分子在低温等离子体范围内发生分解，不同能量的电子与分子相互作用，通过不同的路径导致分子分解。然后，通过分子的自由基重组、加成反应和内部构型转换生成产物。HFO1234zeE/N 分解的实验研究_对2种不同放电方式的混合气体进行了研究，发现用密度泛函理论计算的乘积与实验结果一致。研究结果揭示了局部放电下绝缘气体的分解机理，为HFO1234zeE的应用提供了理论依据。