| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/47BA9F2 | |||
| Repository | sid.inpe.br/mtc-m21d/2022/07.25.16.30 (restricted access) | |||
| Last Update | 2022:07.25.16.30.58 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2022/07.25.16.30.58 | |||
| Metadata Last Update | 2023:01.03.16.46.11 (UTC) administrator | |||
| DOI | 10.3390/en15134861 | |||
| ISSN | 1996-1073 | |||
| Citation Key | WolmaransNyaSchCovSab:2022:InDiTo | |||
| Title | The Influence of Diethylaniline and Toluene on the Streamer Propagation in Cyclohexane between a Point-Plane Gap under Positive Impulse Voltage Stress  | |||
| Year | 2022 | |||
| Month | July | |||
| Access Date | 2024, May 19 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 4334 KiB | |||
| 2. Context | ||||
| Author | 1 Wolmarans, Carl P. 2 Nyamupangedengu, Cuthbert 3 Schumann, Carina 4 Coville, Neil J. 5 Saba, Marcelo Magalhães Fares | |||
| Resume Identifier | 1 2 3 4 5 8JMKD3MGP5W/3C9JHP6 | |||
| ORCID | 1 2 3 4 0000-0001-5370-1386 5 0000-0001-5857-761X | |||
| Group | 1 2 3 4 5 DIIAV-CGCT-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 University of the Witwatersrand 2 University of the Witwatersrand 3 University of the Witwatersrand 4 University of the Witwatersrand 5 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 carl.wolmarans@nynas.com 2 cuthbert.nyamupangedengu@wits.ac.za 3 carina.schumann@wits.ac.za 4 neil.coville@wits.ac.za 5 marcelo.saba@inpe.br | |||
| Journal | Energies | |||
| Volume | 15 | |||
| Number | 13 | |||
| Pages | e4861 | |||
| Secondary Mark | A2_CIÊNCIAS_AGRÁRIAS_I B1_INTERDISCIPLINAR B1_ENGENHARIAS_II | |||
| History (UTC) | 2022-07-25 16:31:23 :: simone -> administrator :: 2022 2023-01-03 16:46:11 :: administrator -> simone :: 2022 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Keywords | streamer propagation cyclohexane additives high-speed imaging | |||
| Abstract | Liquid insulation is used in high voltage equipment such as power transformers as both dielectric medium and coolant. Breakdown in liquid insulation tends to be governed either by streamer initiation under more uniform fields, or by streamer propagation under more non-uniform fields. A model streamer propagation study, which screens the effectiveness of additives based on cyclohexane and mixtures with diethylaniline (DEA) and toluene, is presented in this paper. The effect of additives, at different concentrations, on streamer propagation velocity in cyclohexane under an applied lightning impulse voltage of positive polarity is studied. Cyclohexane (ionisation potential 9.88 eV) was chosen because, being a hydrocarbon, it shares similarities with the constituents of common insulating liquids. Previous studies have also shown how, in general, the addition of additives of lower ionization potential than the bulk liquid can slow down streamer propagation in insulating liquids. A point-plane electrode configuration of 70 mm gap with a 5 mu m tip radius is used and subjected to an applied positive polarity impulse of 1.2/50 mu s. A high velocity imaging system is also used to capture streamer images to validate a Time-To-Breakdown (TTB) measurement approach used in inferring approximate streamer velocity. The DEA (ionisation potential 6.98 eV) was found to be an effective additive to slow down positive polarity streamers in cyclohexane in the applied voltage range (approximate to 220-280 kV peak) in concentrations above approximately 0.33% (by volume). Toluene (ionisation potential 8.82 eV) was found not to significantly slow down streamers in cyclohexane, even at 10% concentration, for the same voltage range. This is postulated to be due to the fact that toluene does not have a low enough ionisation potential (with respect to that of the cyclohexane) to change the streamer branching characteristics sufficiently during propagation. | |||
| Area | CST | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCT > The Influence of... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
| |||
| 4. Conditions of access and use | ||||
| Language | en | |||
| Target File | energies-15-04861.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46KUATE | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.54.40 1 sid.inpe.br/bibdigital/2022/04.03.22.23 1 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||