高压直流电缆绝缘材料研究进展评述

发布时间：2019-02-28 12:05

【摘要】：为促进高压直流电缆在大容量、远距离、复杂环境下电能输送方面的应用,需要对直流电缆绝缘材料的关键问题进行深入研究。针对高压直流电缆的发展历史,介绍了绕包和挤包绝缘各自的技术优势及工程应用,并对目前广泛应用的挤包直流电缆绝缘材料的研究现状进行分析,总结了近几年直流电缆聚合物绝缘的研究热点,包括空间电荷、介电性能和老化性能等问题,提出模型电缆与平板试样在空间电荷分布上的差异性,并着重分析了目前聚合物材料电导率和树枝老化的研究进展,并从工程实际角度评述了在这些关键问题上还需要突破的技术瓶颈。最后,根据国内外研究热点,总结了直流电缆绝缘材料研究的未来发展方向,包括聚乙烯绝缘材料的改性研究和环保、高性能的新型绝缘基料研究。
[Abstract]:In order to promote the application of high voltage DC cable in large capacity, long distance and complex environment, it is necessary to study the key problems of insulation material of DC cable. In view of the development history of HVDC cables, this paper introduces the technical advantages and engineering applications of winding and extruding insulation, and analyzes the research status of insulation materials for extruded DC cables which are widely used at present. The research hotspots of polymer insulation of DC cable in recent years are summarized, including space charge, dielectric property and aging property, and the difference of space charge distribution between model cable and plate sample is put forward. The current research progress of conductivity and branch aging of polymer materials is emphatically analyzed, and the technical bottlenecks which need to be broken through in these key problems are reviewed from the point of view of engineering practice. Finally, according to the research hotspot at home and abroad, the future development direction of DC cable insulation material research is summarized, including the modification of polyethylene insulation material and the research of environmental protection and high performance new insulation base material.
【作者单位】：中国电力科学研究院;电网环境保护国家重点实验室;国网浙江省电力公司舟山供电公司;
【基金】：国家重点研发计划(2016YFB0900704) 国家电网公司科技项目(GY71-16-59)~~
【分类号】：TM21

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