Effect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric field
Electrical equipment is always subjected to various of operating conduction and voltage waves which cause insulation failure on the surface of pressboard (PB). In this paper, pre-breakdown streamers of surface discharge on the interface of PB in vegetable oil based Fe3O4 nanofluids (NFs) were observ...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2018-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5043591 |
| _version_ | 1818018162167250944 |
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| author | Wei Yao Zhengyong Huang Jian Li Gang Chen Jianfeng He Jawad Ahmad |
| author_facet | Wei Yao Zhengyong Huang Jian Li Gang Chen Jianfeng He Jawad Ahmad |
| author_sort | Wei Yao |
| collection | DOAJ |
| description | Electrical equipment is always subjected to various of operating conduction and voltage waves which cause insulation failure on the surface of pressboard (PB). In this paper, pre-breakdown streamers of surface discharge on the interface of PB in vegetable oil based Fe3O4 nanofluids (NFs) were observed by the shadowgraph method under lightning impulse voltage. The images indicate that streamers of NFs impregnated PB show more branches than that of pure oil impregnated PB. The stopping length of streamers propagation is calculated by shadowgraph images for NFs and pure oil. Results suggest that the stopping length of NFs impregnated PB is shorter under the same extra voltage. Secondary reverse streamer is generated at the dissipation process by the reverse electric field, which is caused by residual space charge imparted by primary streamer. Results indicate that the Fe3O4 nanoparticles have reduced the length of secondary reverse streamer. The positive and negative lightning breakdown voltage of Fe3O4 NFs impregnated PB is increased by 24% and 12% at 50mm gap, respectively. In addition, nanoparticles have effectively changed the electric field distribution resulting in the alleviation of streamer concentrated along the parallel direction of PB, and increased the lightning impulse breakdown voltage. |
| first_indexed | 2024-04-14T07:35:28Z |
| format | Article |
| id | doaj.art-07d8b0ed52de413f948dabe273fa1316 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-14T07:35:28Z |
| publishDate | 2018-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-07d8b0ed52de413f948dabe273fa13162022-12-22T02:05:41ZengAIP Publishing LLCAIP Advances2158-32262018-08-0188085211085211-1010.1063/1.5043591036808ADVEffect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric fieldWei Yao0Zhengyong Huang1Jian Li2Gang Chen3Jianfeng He4Jawad Ahmad5State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, ChinaElectrical equipment is always subjected to various of operating conduction and voltage waves which cause insulation failure on the surface of pressboard (PB). In this paper, pre-breakdown streamers of surface discharge on the interface of PB in vegetable oil based Fe3O4 nanofluids (NFs) were observed by the shadowgraph method under lightning impulse voltage. The images indicate that streamers of NFs impregnated PB show more branches than that of pure oil impregnated PB. The stopping length of streamers propagation is calculated by shadowgraph images for NFs and pure oil. Results suggest that the stopping length of NFs impregnated PB is shorter under the same extra voltage. Secondary reverse streamer is generated at the dissipation process by the reverse electric field, which is caused by residual space charge imparted by primary streamer. Results indicate that the Fe3O4 nanoparticles have reduced the length of secondary reverse streamer. The positive and negative lightning breakdown voltage of Fe3O4 NFs impregnated PB is increased by 24% and 12% at 50mm gap, respectively. In addition, nanoparticles have effectively changed the electric field distribution resulting in the alleviation of streamer concentrated along the parallel direction of PB, and increased the lightning impulse breakdown voltage.http://dx.doi.org/10.1063/1.5043591 |
| spellingShingle | Wei Yao Zhengyong Huang Jian Li Gang Chen Jianfeng He Jawad Ahmad Effect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric field AIP Advances |
| title | Effect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric field |
| title_full | Effect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric field |
| title_fullStr | Effect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric field |
| title_full_unstemmed | Effect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric field |
| title_short | Effect of nanoparticles on streamer propagation and breakdown of vegetable oil-pressboard interface in non-uniform electric field |
| title_sort | effect of nanoparticles on streamer propagation and breakdown of vegetable oil pressboard interface in non uniform electric field |
| url | http://dx.doi.org/10.1063/1.5043591 |
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