Effect of the surface roughness of epoxy resin on its creeping flashover characteristics in C4F7N-CO2 gas mixtures
Source abstract
Abstract
Epoxy resin samples were processed by one direction and multi-directions polishing methods in this research. The contact angles of the samples, the AC/DC flashover voltage in C4F7N/CO2 gas mixtures and the charge dissipation rate of the polished samples were measured. The results show that the contact angle of the polished epoxy resin sample increases. In the gas mixtures, the surface roughness modification of the epoxy resin under different voltage types is proposed. According to the charge dissipation rate, the development mechanism of creeping flashovers under different voltage is revealed. Different dissipative properties ultimately enhance the creeping discharge voltage of the samples by suppressing electron secondary electron emission. This paper offers a basis for insulation design in the C4F7N/CO2 gas mixture.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: High voltage insulation and dielectric phenomena · Electrical Fault Detection and Protection · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University 1 , Beijing 102206, PR China
Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University 2 , Baoding 071003, PR China
China Electric Science Research Institute Co. Ltd 3 , Beijing 100192, PR China
Anhui Electric Power Research Institute 4 , Hefei 230022, PR China
Funding
Natioanl Key R&D Program of China · State Grid Science & Technology Project
References (38)
Show source-provided references
1. Examination and research on the partial discharge fault diagnostics in gas insulated switchgear
2. Application and test of the solidepoxy insulators in gas-insulated switehgear
3. Factors affecting insulation performance of GIL column epoxy resin composite insulators
4. 2009
5. 1996
6. Remarkable improvement in the mechanical properties of epoxy composites achieved by a small amount of modified helical carbon nanotubes10.3390/polym10101103 ↗
7. Highly aligned graphene/polymer nanocomposites with excellent dielectric properties for high-performance electromagnetic interference shielding10.1002/adma.201305293 ↗
8. Enhanced surface insulation and depressed dielectric constant for Al2O3/epoxy composites through plasma fluorination of filler10.1088/1361-6463/ab0153 ↗
9. 1995
10. Feasibility study on application of high voltage and high power vacuum circuit breaker
11. Surface charge decay on insulators in air and sulfurhexafluorid–Part I: Simulation10.1109/tdei.2008.4591214 ↗
12. Surface modification of epoxy using an atmospheric pressure dielectric barrier discharge to accelerate surface charge dissipation10.1109/tdei.2017.006321 ↗
13. Influence of surface roughness on vacuum flashover characteristics of PMMA
14. Pulsed flashover across a solid dielectric in vacuum10.1109/tdei.2018.007133 ↗
15. Mechanism of pulsed surface flashover involving electronstimulated desorption10.1063/1.327839 ↗
16. Flashover in wide-band gap high-purity insulators: Methodology and mechanisms10.1063/1.348831 ↗
17. Effect of surface shallow traps on flashover characteristics across machinable ceramic in vacuum10.1109/tdei.2008.4656257 ↗
18. Influence of surface roughness on impulse flashover characteristics of substation insulator
19. Effect of surface roughness on characteristics of surface dielectric barrier discharge
20. Effects of surface roughness on surface charge accumulation characteristics and surface flashover performance of alumina-filled epoxy resin spacers10.1063/1.5043239 ↗
21. Effect of different surface treatment on the surface flashover characteristics of machinable ceramic in vacuum
22. Improving withstand voltage by roughening the surface of an insulating spacer used in vacuum
23. 2015
24. Dynamic characteristics of surface charges on PMMA with different roughness in air
25. Study on surface flashover characteristics of epoxy resin insulator in SF6/CF4 mixture under uneven field
26. Arc gas-flow simulation algorithm considering the effects of nozzle ablation in a self-blast GCB10.1109/tpwrd.2015.2403413 ↗
27. Dielectric properties of gas mixtures with PerFluorocarbon gas and gas with low liquefaction temperature10.1109/tdei.2015.005373 ↗
28. Dielectric properties of gas mixtures with C3F8/C2F6 and N2/CO210.1109/tdei.2015.005040 ↗
29. 2016
30. Analysis of decomposition by products and its formation mechanism of C4F7N/air mixed gases under AC corona discharge
31. Insulation performance and application of environment-friendly gases mixtures of C4F7N and C5F10O with CO2
32. Effect of surface charge on DC flashover voltage of typical polymer insulating materials
33. DC flashover characteristics of surface fluorinated epoxy
34. Significant suppression of surface charge accumulation on epoxy resin by direct fluorination10.1109/tdei.2012.6259982 ↗
35. Identification of electron and hole trap based on isothermal surface potential decay model10.1063/1.4792491 ↗
36. Development of surface charge accumulation on insulating material under HVDC
37. Surface charge distribution of polymeric insulating materials under HVAC
38. Stationary resistive field distribution along epoxy resin insulators in air under DC voltage10.1109/tdei.2012.6311522 ↗