准均匀电场下C5F10O/干燥空气与C5F10O/N2的绝缘特性
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Insulation characteristics of C5F10O/Air and C5F10O/N2 under quasi-uniform electric field
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    摘要:

    SF6因优异的电气特性广泛应用于电器绝缘设备中,但其产生的温室效应对大气环境具有极大损害。近年来,C5F10O作为一种环保型SF6潜在替代气体受到国内外科研工作者的关注。为进一步探究C5F10O/干燥空气与C5F10O/N2的绝缘特性,文中利用气体绝缘性能测试平台,对不同气压、不同C5F10O分压下的2种混合气体在准均匀电场下进行工频击穿试验。实验结果表明,C5F10O混合气体绝缘强度随气体压强的增大而增大;提高C5F10O分压亦可提高两类缓冲气体的绝缘强度,且对N2绝缘强度提升相对值大于干燥空气。从绝缘强度考虑,适当增大C5F10O混合气体气压和C5F10O分压,C5F10O/干燥空气比C5F10O/N2混合气体更具潜力替代室内中低压设备中的SF6

    Abstract:

    SF6 is widely used in electrical insulation equipment due to its excellent electrical properties, but its greenhouse effect is extremely detrimental to the atmospheric environment. In recent years, C5F10O, as an environmentally friendly SF6 potential substitute gas, has attracted the attention of researchers around the world. In order to further explore the insulation properties of C5F10O/Air and C5F10O/N2, a gas insulation performance test platform are used to conduct power-frequency breakdown tests under two quasi-uniform electric fields for two gas mixtures under different pressures and different C5F10O partial pressures. The experimental results show that the insulation strength of C5F10O mixed gas increases with the increase of gas pressure. Increasing the partial pressure of C5F10O can also increase the insulation strength of the two types of buffer gases, and the relative increase in insulation strength of N2 is greater than that of dry air. From the viewpoint of dielectric strength, C5F10O /Air has more potential to replace SF6 in indoor low-voltage equipment than C5F10O /N2 mixed gas by appropriately increasing the C5F10O mixed gas pressure and C5F10O partial pressure.

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卓然,柯锟,张跃,傅明利,王邸博,向吉祥,张晓星.准均匀电场下C5F10O/干燥空气与C5F10O/N2的绝缘特性[J].电力工程技术,2021,40(3):159-165

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  • 收稿日期:2020-11-28
  • 最后修改日期:2021-01-07
  • 录用日期:2020-04-11
  • 在线发布日期: 2021-06-11
  • 出版日期: 2021-05-28
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