Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (11): 2477.doi: 10.7503/cjcu20180530

• Physical Chemistry • Previous Articles     Next Articles

Theoretical Investigations on the Structure-activity Relationship to the Dielectric Strength of the Insulation Gases

HOU Hua1, YU Xiaojuan1, ZHOU Wenjun2, LUO Yunbai1, WANG Baoshan1,*()   

  1. 1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
    2. School of Electrical Engineering, Wuhan University, Wuhan 430072, China
  • Received:2018-07-27 Online:2018-11-10 Published:2018-09-29
  • Contact: WANG Baoshan E-mail:baoshan@whu.edu.cn
  • Supported by:
    † Supported by the National Key Research and Development Program of China(No.2017YFB0902500) and the Science and Technology Project of State Grid Corporation of China[The Key Technology of Environment?Friendly Gas?Insulated Transmission Line(GIL)].

Abstract:

A new structure-activity relationship was obtained on the basis of the electrostatic potential surface of the neutral molecules, including the total surface area, the balanced positive and negative potential separation, the local polarity, molecular density, and the reduced positive surface area. The physical dilemma and computational difficulties in the use of ionic or anionic structures were both removed in the present models. The absolute mean deviation of the theoretical dielectric strengths from the experimental data is as low as 0.06 and the correlation coefficient is 0.993. The effects of electronic structures on the dielectric strength were analyzed to gain insights on the molecular design on the novel insulation gases superior to SF6.

Key words: Dielectric strength, Insulation gas, Hexafluoride sulfur, Structure-activity relationship, Electrostatic potential

CLC Number: 

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