DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperature
Breakdown failure in insulation material is one of the key problems that threaten the safe operation of high-voltage direct current cable. In this work, the effect of boron nitride nanosheets (BNNSs) concentration, space charge and temperature on DC breakdown strength have been explored. Cross-linke...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-03-01
|
| Series: | High Voltage |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/hve.2019.0393 |
| _version_ | 1818945459726581760 |
|---|---|
| author | Guochang Li Xuguang Zhou Xuejing Li Yanhui Wei Chuncheng Hao Shengtao Li Qingquan Lei |
| author_facet | Guochang Li Xuguang Zhou Xuejing Li Yanhui Wei Chuncheng Hao Shengtao Li Qingquan Lei |
| author_sort | Guochang Li |
| collection | DOAJ |
| description | Breakdown failure in insulation material is one of the key problems that threaten the safe operation of high-voltage direct current cable. In this work, the effect of boron nitride nanosheets (BNNSs) concentration, space charge and temperature on DC breakdown strength have been explored. Cross-linked polyethylene (XLPE)/BNNS nanocomposites were prepared by the melt blending method, and the basic characteristics of nanoparticles and composite were characterised. The experimental results indicate that DC breakdown strength of nanocomposite can be effectively improved when a small amount of BN nanosheet is doped into the matrix. The breakdown strength of the sample reaches the maximum value of 407.52 kV/mm when BNNS content is 0.5 wt%, which is about 33% higher than that of pure XLPE. Further, the effect of space charge on the breakdown of nanocomposites has been studied by pre-injecting charges. For the samples with different BNNS contents, all the breakdown strength present ascending trend when the polarity of the applied voltage is the same as that of the pre-injected charges. Besides, it can be found that the breakdown strength of the XLPE/BNNSs composite decreases significantly at 50°C, which is due to more charge accumulation at 50°C. It reaches 2.06 × 10^−8 C which increases by about 2.2 times than the room temperature. |
| first_indexed | 2024-12-20T07:59:27Z |
| format | Article |
| id | doaj.art-bc68a0029fbc42e2ac8cd827f33e8888 |
| institution | Directory Open Access Journal |
| issn | 2397-7264 |
| language | English |
| last_indexed | 2024-12-20T07:59:27Z |
| publishDate | 2020-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | High Voltage |
| spelling | doaj.art-bc68a0029fbc42e2ac8cd827f33e88882022-12-21T19:47:33ZengWileyHigh Voltage2397-72642020-03-0110.1049/hve.2019.0393HVE.2019.0393DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperatureGuochang Li0Xuguang Zhou1Xuejing Li2Yanhui Wei3Chuncheng Hao4Shengtao Li5Qingquan Lei6Institute of Advanced Electrical Materials, Qingdao University of Science and TechnologyInstitute of Advanced Electrical Materials, Qingdao University of Science and TechnologyInstitute of Advanced Electrical Materials, Qingdao University of Science and TechnologyInstitute of Advanced Electrical Materials, Qingdao University of Science and TechnologyInstitute of Advanced Electrical Materials, Qingdao University of Science and TechnologyState Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong UniversityInstitute of Advanced Electrical Materials, Qingdao University of Science and TechnologyBreakdown failure in insulation material is one of the key problems that threaten the safe operation of high-voltage direct current cable. In this work, the effect of boron nitride nanosheets (BNNSs) concentration, space charge and temperature on DC breakdown strength have been explored. Cross-linked polyethylene (XLPE)/BNNS nanocomposites were prepared by the melt blending method, and the basic characteristics of nanoparticles and composite were characterised. The experimental results indicate that DC breakdown strength of nanocomposite can be effectively improved when a small amount of BN nanosheet is doped into the matrix. The breakdown strength of the sample reaches the maximum value of 407.52 kV/mm when BNNS content is 0.5 wt%, which is about 33% higher than that of pure XLPE. Further, the effect of space charge on the breakdown of nanocomposites has been studied by pre-injecting charges. For the samples with different BNNS contents, all the breakdown strength present ascending trend when the polarity of the applied voltage is the same as that of the pre-injected charges. Besides, it can be found that the breakdown strength of the XLPE/BNNSs composite decreases significantly at 50°C, which is due to more charge accumulation at 50°C. It reaches 2.06 × 10^−8 C which increases by about 2.2 times than the room temperature.https://digital-library.theiet.org/content/journals/10.1049/hve.2019.0393power cable insulationiii-v semiconductorsnanofabricationnanoparticlesspace chargenanocompositesxlpe insulationboron compoundsblendingelectric breakdownhvdc power transmissioncharge accumulationdc breakdown characteristicsbn nanosheet concentrationspace chargebreakdown failurehigh-voltage direct current cabledc breakdown strengthbnns contentxlpe-bnns nanocompositespreinjected chargescross-linked polyethylenetemperature 50.0 degctemperature 293.0 k to 298.0 kbn |
| spellingShingle | Guochang Li Xuguang Zhou Xuejing Li Yanhui Wei Chuncheng Hao Shengtao Li Qingquan Lei DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperature High Voltage power cable insulation iii-v semiconductors nanofabrication nanoparticles space charge nanocomposites xlpe insulation boron compounds blending electric breakdown hvdc power transmission charge accumulation dc breakdown characteristics bn nanosheet concentration space charge breakdown failure high-voltage direct current cable dc breakdown strength bnns content xlpe-bnns nanocomposites preinjected charges cross-linked polyethylene temperature 50.0 degc temperature 293.0 k to 298.0 k bn |
| title | DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperature |
| title_full | DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperature |
| title_fullStr | DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperature |
| title_full_unstemmed | DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperature |
| title_short | DC breakdown characteristics of XLPE/BNNS nanocomposites considering BN nanosheet concentration, space charge and temperature |
| title_sort | dc breakdown characteristics of xlpe bnns nanocomposites considering bn nanosheet concentration space charge and temperature |
| topic | power cable insulation iii-v semiconductors nanofabrication nanoparticles space charge nanocomposites xlpe insulation boron compounds blending electric breakdown hvdc power transmission charge accumulation dc breakdown characteristics bn nanosheet concentration space charge breakdown failure high-voltage direct current cable dc breakdown strength bnns content xlpe-bnns nanocomposites preinjected charges cross-linked polyethylene temperature 50.0 degc temperature 293.0 k to 298.0 k bn |
| url | https://digital-library.theiet.org/content/journals/10.1049/hve.2019.0393 |
| work_keys_str_mv | AT guochangli dcbreakdowncharacteristicsofxlpebnnsnanocompositesconsideringbnnanosheetconcentrationspacechargeandtemperature AT xuguangzhou dcbreakdowncharacteristicsofxlpebnnsnanocompositesconsideringbnnanosheetconcentrationspacechargeandtemperature AT xuejingli dcbreakdowncharacteristicsofxlpebnnsnanocompositesconsideringbnnanosheetconcentrationspacechargeandtemperature AT yanhuiwei dcbreakdowncharacteristicsofxlpebnnsnanocompositesconsideringbnnanosheetconcentrationspacechargeandtemperature AT chunchenghao dcbreakdowncharacteristicsofxlpebnnsnanocompositesconsideringbnnanosheetconcentrationspacechargeandtemperature AT shengtaoli dcbreakdowncharacteristicsofxlpebnnsnanocompositesconsideringbnnanosheetconcentrationspacechargeandtemperature AT qingquanlei dcbreakdowncharacteristicsofxlpebnnsnanocompositesconsideringbnnanosheetconcentrationspacechargeandtemperature |