Next Article in Journal
Collaborative Scheduling between OSPPs and Gasholders in Steel Mill under Time-of-Use Power Price
Next Article in Special Issue
Breakdown Voltage and Its Influencing Factors of Thermally Aged Oil-Impregnated Paper at Pulsating DC Voltage
Previous Article in Journal
Parametric Design of an Ultrahigh-Head Pump-Turbine Runner Based on Multiobjective Optimization
Previous Article in Special Issue
Proposal of Physical-Statistical Model of Thermal Aging Respecting Threshold Value
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Energies 2017, 10(8), 1170; doi:10.3390/en10081170

Insulation Strength and Decomposition Characteristics of a C6F12O and N2 Gas Mixture

School of Electrical Engineering, Wuhan University, Wuhan 430072, China
*
Author to whom correspondence should be addressed.
Received: 9 June 2017 / Revised: 26 July 2017 / Accepted: 6 August 2017 / Published: 9 August 2017
View Full-Text   |   Download PDF [2092 KB, uploaded 9 August 2017]   |  

Abstract

This paper explores the decomposition characteristics of a new type of environmentally friendly insulating gas C6F12O and N2 mixed gas under AC voltage. The breakdown behavior of 3% C6F12O and N2 mixed gas in quasi-uniform field was investigated through a breakdown experiment. The self-recovery of the mixed gas was analyzed by 100 breakdown experiments. The decomposition products of C6F12O and N2 under breakdown voltage were determined by gas chromatography–mass spectrometer (GC-MS). Finally, the decomposition process of the products was calculated by density functional theory, and the ionization energy, affinity, and molecular orbital gap of the decomposition products were also calculated. The properties of the decomposition products were analyzed from the aspects of insulation and environmental protection. The experimental results show that the 3% C6F12O and N2 mixed gas did not show a downward trend over 100 breakdown tests under a 0.10 MPa breakdown voltage. The decomposition products after breakdown were CF4, C2F6, C3F6, C3F8, C4F10, and C5F12. The ionization energies of several decomposition products are more than 10 eV. The Global Warming Potential (GWP) values of the main products are lower than SF6. C2F6, C3F8, and C4F10 have better insulation properties. View Full-Text
Keywords: C6F12O; N2; breakdown voltage; decomposition characteristic; density functional theory (DFT) C6F12O; N2; breakdown voltage; decomposition characteristic; density functional theory (DFT)
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Zhang, X.; Tian, S.; Xiao, S.; Deng, Z.; Li, Y.; Tang, J. Insulation Strength and Decomposition Characteristics of a C6F12O and N2 Gas Mixture. Energies 2017, 10, 1170.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top