| 皱纹铝套变形对挤包绝缘直流电缆电场分布的影响 |
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| 引用本文： | 张洪亮,尹毅,肖晋宇,侯金鸣,闫志雨,谢书鸿,胡明.皱纹铝套变形对挤包绝缘直流电缆电场分布的影响[J].中国电力,2020,53(9):141-149. |
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| 作者姓名： | 张洪亮 尹毅 肖晋宇 侯金鸣 闫志雨 谢书鸿 胡明 |
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| 作者单位： | 1. 上海交通大学 电子信息与电气工程学院，上海 200240;2. 电力传输与功率变换控制教育部重点实验室，上海 200240;3. 全球能源互联网发展合作组织，北京 100031;4. 中天科技海缆有限公司，江苏 南通 226010 |
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| 基金项目： | 国家重点研发计划资助项目(±500 kV直流电缆关键技术，2016YFB0900701)；江苏省重点研发计划资助项目(±500 kV等级直流电缆设计与制造关键技术研发，BE2018090)；全球能源互联网集团有限公司和国家电网有限公司科技项目(SGGEIG00JYJS1900009) |
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| 摘 要： | 为研究高压直流电缆皱纹铝套受力变形对电缆绝缘结构造成的损伤，以及在运行过程中对电气性能的影响，针对500 kV直流电缆开展绝缘线芯热膨胀测试和皱纹铝套压扁试验，确定皱纹铝套变形在绝缘线芯表面造成的缺陷情况。建立有限元模型，分析绝缘场强分布随温差变化情况，以及皱纹铝套变形导致绝缘线芯表面缺陷后的场强分布情况。仿真结果表明：电缆在负载过程中绝缘场强随着绝缘温差的变化而变化，此外绝缘表面存在缺陷会进一步导致场强畸变，且畸变程度与外加电压和绝缘温差有关。
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| 关 键 词： | 直流电缆 XLPE绝缘 皱纹铝套 绝缘温差 电场分布 有限元分析 |
| 收稿时间： | 2020-04-07 |
| 修稿时间： | 2020-05-18 |
Influence of Deformed Corrugated Aluminum Sheath on the Electric Field of Extruded Insulation DC Cable |
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| ZHANG Hongliang,YIN Yi,XIAO Jinyu,HOU Jinming,YAN Zhiyu,XIE Shuhong,HU Ming.Influence of Deformed Corrugated Aluminum Sheath on the Electric Field of Extruded Insulation DC Cable[J].Electric Power,2020,53(9):141-149. |
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| Authors: | ZHANG Hongliang YIN Yi XIAO Jinyu HOU Jinming YAN Zhiyu XIE Shuhong HU Ming |
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| Affiliation: | 1. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Key Laboratory of Control of Power Transmission and Conversion(SJTU), Ministry of Education, Shanghai 200240, China;3. Global Energy Interconnection Development and Cooperation Organization, Beijing 100031, China;4. Zhongtian Technology Submarine Cable Co., Ltd., Nantong 226010, China |
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| Abstract: | In order to determine the possible damage to the cable insulation structure by deformed corrugated aluminum sheath of HVDC cable and its influence on the electrical performance during operation, thermal expansion test and radial pressure test were conducted on 500 kV DC cable to identify the concave defects on insulation surface caused by the deformation of corrugated aluminum sheath. A finite element model was established to analyze the variation of insulation field intensity distribution with temperature drop, and the field intensity distribution on the defected insulation surface caused by the deformed corrugated aluminum sheath. The finite element simulation results show that the insulation field strength of cable varies with the insulation temperature difference during the load process, and the defects on the insulation surface can further cause the field strength distortion, the extent of which is related to the applied voltage and insulation temperature difference. |
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| Keywords: | DC cable XLPE insulation corrugated aluminum sheath temperature drop electric field distribution finite element analysis |
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