Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes
Space charge is one of the main factors that affect the electrical tree characteristics of HVDC cable insulation. Based on the bipolar charge transport model, this paper simulates the space charge distribution characteristics of the two-dimensional needle plate electrode model under ±20 kV、±22.5 kV...
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| Format: | Article |
| Language: | zho |
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State Grid Energy Research Institute
2021-04-01
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| Series: | Zhongguo dianli |
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| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202006270 |
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| author | Xiaobin XU Aijing LIU Yanjie LE Hechen LIU Zhanpeng GUO Yunpeng LIU |
| author_facet | Xiaobin XU Aijing LIU Yanjie LE Hechen LIU Zhanpeng GUO Yunpeng LIU |
| author_sort | Xiaobin XU |
| collection | DOAJ |
| description | Space charge is one of the main factors that affect the electrical tree characteristics of HVDC cable insulation. Based on the bipolar charge transport model, this paper simulates the space charge distribution characteristics of the two-dimensional needle plate electrode model under ±20 kV、±22.5 kV and ±25 kV DC pre-stress with a duration of 3 600s, and makes a comparative analysis between the space charge distribution characteristics and the DC grounded electrical tree initiation characteristics. The results show that the space charge density and injection depth increase with the increase of the pre-stress and time, and the initiation length of DC grounded electrical tree increases with the increase of pre-stress duration and amplitude. There is a high similarity between space charge distribution characteristics and electrical tree initiation characteristics. The space charge distribution near the needle tip is the main reason for the difference in the initiation characteristics of the grounded electrical tree. |
| format | Article |
| id | doaj-art-a6c0f0ea6c6140eda577a8808d47e003 |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2021-04-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-a6c0f0ea6c6140eda577a8808d47e0032025-08-20T02:59:19ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492021-04-01544566210.11930/j.issn.1004-9649.202006270zgdl-54-4-xuxiaobinEffect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate ElectrodesXiaobin XU0Aijing LIU1Yanjie LE2Hechen LIU3Zhanpeng GUO4Yunpeng LIU5North China Electric Power University, Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, Baoding 071003, ChinaNorth China Electric Power University, Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, Baoding 071003, ChinaState Grid Zhejiang Electric Power Company Zhoushan Power Supply Company, Zhoushan 316000, ChinaNorth China Electric Power University, Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, Baoding 071003, ChinaNorth China Electric Power University, Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, Baoding 071003, ChinaNorth China Electric Power University, Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, Baoding 071003, ChinaSpace charge is one of the main factors that affect the electrical tree characteristics of HVDC cable insulation. Based on the bipolar charge transport model, this paper simulates the space charge distribution characteristics of the two-dimensional needle plate electrode model under ±20 kV、±22.5 kV and ±25 kV DC pre-stress with a duration of 3 600s, and makes a comparative analysis between the space charge distribution characteristics and the DC grounded electrical tree initiation characteristics. The results show that the space charge density and injection depth increase with the increase of the pre-stress and time, and the initiation length of DC grounded electrical tree increases with the increase of pre-stress duration and amplitude. There is a high similarity between space charge distribution characteristics and electrical tree initiation characteristics. The space charge distribution near the needle tip is the main reason for the difference in the initiation characteristics of the grounded electrical tree.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202006270space chargedc pre-stressxlpebipolar charge transport modelcomsolpolarity effect |
| spellingShingle | Xiaobin XU Aijing LIU Yanjie LE Hechen LIU Zhanpeng GUO Yunpeng LIU Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes Zhongguo dianli space charge dc pre-stress xlpe bipolar charge transport model comsol polarity effect |
| title | Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes |
| title_full | Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes |
| title_fullStr | Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes |
| title_full_unstemmed | Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes |
| title_short | Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes |
| title_sort | effect of dc pre stress on space charge and electrical tree in xlpe with needle plate electrodes |
| topic | space charge dc pre-stress xlpe bipolar charge transport model comsol polarity effect |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202006270 |
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