Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition
Abstract Polypropylene (PP) is being considered as a suitable alternative to the cross‐linked polyethylene (XLPE) insulation as the latter is prone to the space charge accumulation when subjected to the voltage polarity reversals in line‐commutated converter high voltage direct current transmission....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-06-01
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| Series: | IET Science, Measurement & Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/smt2.12034 |
| _version_ | 1828147383377068032 |
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| author | Ashish Paramane Xiangrong Chen Chao Dai Yasuhiro Tanaka |
| author_facet | Ashish Paramane Xiangrong Chen Chao Dai Yasuhiro Tanaka |
| author_sort | Ashish Paramane |
| collection | DOAJ |
| description | Abstract Polypropylene (PP) is being considered as a suitable alternative to the cross‐linked polyethylene (XLPE) insulation as the latter is prone to the space charge accumulation when subjected to the voltage polarity reversals in line‐commutated converter high voltage direct current transmission. This novel contribution correlates the space charge accumulation with the trap distribution inside XLPE and PP under the polarity reversal condition. The pulse electro‐acoustic and surface potential decay methods are used to measure the space charge and trap distributions, respectively. These measurements are carried at different poling durations (1 and 6 h at each polarity) and cycles of voltage polarity reversal (one and three cycles) at the electric field of 60 kV/mm. The XLPE shows more homo and hetero charge accumulation than PP. Dominant shallow traps in the XLPE are responsible for the space charge accumulation, whereas deep traps with higher trap density inhibit space charge accumulation within the PP. Furthermore, the positive and negative threshold fields for the space charge accumulation are measured. It is observed that the space charge can be easily accumulated under the negative electric field. Interestingly, the space charge decays rapidly inside the XLPE with the increased number of polarity reversal cycle. A valid theoretical model is developed to explain the space charge accumulation inside the XLPE and PP. The field‐assisted ionization plays a key role in the space charge accumulation inside the XLPE. |
| first_indexed | 2024-04-11T21:00:10Z |
| format | Article |
| id | doaj.art-683d8d390e2145f1a2a22befc58f3d63 |
| institution | Directory Open Access Journal |
| issn | 1751-8822 1751-8830 |
| language | English |
| last_indexed | 2024-04-11T21:00:10Z |
| publishDate | 2021-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Science, Measurement & Technology |
| spelling | doaj.art-683d8d390e2145f1a2a22befc58f3d632022-12-22T04:03:32ZengWileyIET Science, Measurement & Technology1751-88221751-88302021-06-0115432934210.1049/smt2.12034Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal conditionAshish Paramane0Xiangrong Chen1Chao Dai2Yasuhiro Tanaka3Zhejiang Provincial Key Laboratory of Electrical Machine Systems College of Electrical Engineering Zhejiang University Hangzhou ChinaZhejiang Provincial Key Laboratory of Electrical Machine Systems College of Electrical Engineering Zhejiang University Hangzhou ChinaZhejiang Provincial Key Laboratory of Electrical Machine Systems College of Electrical Engineering Zhejiang University Hangzhou ChinaMeasurement and Electric Machine Control Laboratory Tokyo City University Tamazutsumi, Setagaya Tokyo JapanAbstract Polypropylene (PP) is being considered as a suitable alternative to the cross‐linked polyethylene (XLPE) insulation as the latter is prone to the space charge accumulation when subjected to the voltage polarity reversals in line‐commutated converter high voltage direct current transmission. This novel contribution correlates the space charge accumulation with the trap distribution inside XLPE and PP under the polarity reversal condition. The pulse electro‐acoustic and surface potential decay methods are used to measure the space charge and trap distributions, respectively. These measurements are carried at different poling durations (1 and 6 h at each polarity) and cycles of voltage polarity reversal (one and three cycles) at the electric field of 60 kV/mm. The XLPE shows more homo and hetero charge accumulation than PP. Dominant shallow traps in the XLPE are responsible for the space charge accumulation, whereas deep traps with higher trap density inhibit space charge accumulation within the PP. Furthermore, the positive and negative threshold fields for the space charge accumulation are measured. It is observed that the space charge can be easily accumulated under the negative electric field. Interestingly, the space charge decays rapidly inside the XLPE with the increased number of polarity reversal cycle. A valid theoretical model is developed to explain the space charge accumulation inside the XLPE and PP. The field‐assisted ionization plays a key role in the space charge accumulation inside the XLPE.https://doi.org/10.1049/smt2.12034Dielectric materials and propertiesOrganic insulationCharge measurementd.c. transmissionPower cables |
| spellingShingle | Ashish Paramane Xiangrong Chen Chao Dai Yasuhiro Tanaka Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition IET Science, Measurement & Technology Dielectric materials and properties Organic insulation Charge measurement d.c. transmission Power cables |
| title | Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition |
| title_full | Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition |
| title_fullStr | Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition |
| title_full_unstemmed | Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition |
| title_short | Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition |
| title_sort | correlation of traps inside xlpe and polypropylene with space charge dynamics under polarity reversal condition |
| topic | Dielectric materials and properties Organic insulation Charge measurement d.c. transmission Power cables |
| url | https://doi.org/10.1049/smt2.12034 |
| work_keys_str_mv | AT ashishparamane correlationoftrapsinsidexlpeandpolypropylenewithspacechargedynamicsunderpolarityreversalcondition AT xiangrongchen correlationoftrapsinsidexlpeandpolypropylenewithspacechargedynamicsunderpolarityreversalcondition AT chaodai correlationoftrapsinsidexlpeandpolypropylenewithspacechargedynamicsunderpolarityreversalcondition AT yasuhirotanaka correlationoftrapsinsidexlpeandpolypropylenewithspacechargedynamicsunderpolarityreversalcondition |