An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) method
This paper proposes an evaluation method for the observable trap depth range of space charge when using the pulsed electro-acoustic (PEA) method and its complementarity with the current integration charge (Q(t)) method. Based on the measurement process of the PEA method and the hopping conduction pr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2021-09-01
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| Series: | Metrology and Measurement Systems |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/120624/art11_i.pdf |
| _version_ | 1828294353868554240 |
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| author | Hanwen Ren Tatsuo Takada Yasuhiro Tanaka Qingmin Li |
| author_facet | Hanwen Ren Tatsuo Takada Yasuhiro Tanaka Qingmin Li |
| author_sort | Hanwen Ren |
| collection | DOAJ |
| description | This paper proposes an evaluation method for the observable trap depth range of space charge when using the pulsed electro-acoustic (PEA) method and its complementarity with the current integration charge (Q(t)) method. Based on the measurement process of the PEA method and the hopping conduction principle of space charge, the relationship between the trap depth and the residence time of charge is analysed. A method to analyse the effect of the measurement speed and the spatial resolution of the PEA system on the observable trap depth is then proposed. Further results show when the single measurement time needs 1 s and the resolution is 10 µm at room temperature, the corresponding trap depth is larger than 0.68 eV. Meanwhile, under high temperature or with voltage applied, the depth can further increase. The combined measurement results of the PEA and Q(t) methods indicate that the former focuses on charge distribution in deep traps, which allows to calculate the distorted electric field. The latter can measure the changing process of the total charge involved in all traps, which is applicable to analysing the leakage current. Therefore, the evaluation of HVDC insulation properties based on the joint application of the two methods is more reliable. |
| first_indexed | 2024-04-13T11:36:06Z |
| format | Article |
| id | doaj.art-3e1c4a3b9fc8499498dfb9fd1f84a2c5 |
| institution | Directory Open Access Journal |
| issn | 2300-1941 |
| language | English |
| last_indexed | 2024-04-13T11:36:06Z |
| publishDate | 2021-09-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Metrology and Measurement Systems |
| spelling | doaj.art-3e1c4a3b9fc8499498dfb9fd1f84a2c52022-12-22T02:48:26ZengPolish Academy of SciencesMetrology and Measurement Systems2300-19412021-09-01vol. 28No 3565580https://doi.org/10.24425/mms.2021.137136An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) methodHanwen Ren0Tatsuo Takada1Yasuhiro Tanaka2Qingmin Li3North China Electric Power University, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing 102206, ChinaTokyo City University, 1-28-1 Tamazutsumi, Setagaya, Tokyo, 158-8557, JapanTokyo City University, 1-28-1 Tamazutsumi, Setagaya, Tokyo, 158-8557, JapanNorth China Electric Power University, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing 102206, ChinaThis paper proposes an evaluation method for the observable trap depth range of space charge when using the pulsed electro-acoustic (PEA) method and its complementarity with the current integration charge (Q(t)) method. Based on the measurement process of the PEA method and the hopping conduction principle of space charge, the relationship between the trap depth and the residence time of charge is analysed. A method to analyse the effect of the measurement speed and the spatial resolution of the PEA system on the observable trap depth is then proposed. Further results show when the single measurement time needs 1 s and the resolution is 10 µm at room temperature, the corresponding trap depth is larger than 0.68 eV. Meanwhile, under high temperature or with voltage applied, the depth can further increase. The combined measurement results of the PEA and Q(t) methods indicate that the former focuses on charge distribution in deep traps, which allows to calculate the distorted electric field. The latter can measure the changing process of the total charge involved in all traps, which is applicable to analysing the leakage current. Therefore, the evaluation of HVDC insulation properties based on the joint application of the two methods is more reliable.https://journals.pan.pl/Content/120624/art11_i.pdfpulsed electro-acoustic methodtrap depthcurrent integration charge methodleakage current |
| spellingShingle | Hanwen Ren Tatsuo Takada Yasuhiro Tanaka Qingmin Li An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) method Metrology and Measurement Systems pulsed electro-acoustic method trap depth current integration charge method leakage current |
| title | An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) method |
| title_full | An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) method |
| title_fullStr | An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) method |
| title_full_unstemmed | An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) method |
| title_short | An evaluation method of observable charge trap depth for the pea method and its complementarity with the Q(t) method |
| title_sort | evaluation method of observable charge trap depth for the pea method and its complementarity with the q t method |
| topic | pulsed electro-acoustic method trap depth current integration charge method leakage current |
| url | https://journals.pan.pl/Content/120624/art11_i.pdf |
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