环保型高压直流电缆绝缘材料研究进展

发布时间：2018-02-01 11:21

本文关键词： 高压直流电缆环保绝缘材料聚烯烃纳米电介质空间电荷　出处：《高电压技术》2017年02期 　论文类型：期刊论文

【摘要】：随着直流输电技术的发展,直流电缆输电方式在未来电能传输中将发挥重要作用,而直流电缆输电技术发展的关键在于电缆绝缘材料的突破。针对传统交联聚乙烯绝缘存在的不可回收再利用、工作温度有限和加工工艺复杂等缺点,开发环保型直流电缆绝缘材料显得尤为必要。为促进环保型直流电缆绝缘材料的研究和开发,对环保型直流电缆绝缘材料的发展现状和关键技术进行了系统评述。总结了目前常见的几种聚烯烃类环保型直流电缆绝缘材料的研究进展和聚烯烃材料的3种改性方法:共混改性、纳米改性和化学接枝改性,对比了环保型直流电缆绝缘材料和传统交联聚乙烯相比的优势。可以看出,以热塑性聚烯烃,特别是聚丙烯为基体的环保型直流电缆绝缘材料展现出了很好的应用前景,可以有效提高直流电缆的工作温度,简化加工工艺。环保型直流电缆绝缘材料开发过程中更应注重材料在高温下的性能,以发挥其优势从而提高直流电缆的运行温度,同时应该同步开展环保型直流电缆绝缘材料的老化研究。
[Abstract]:With the development of DC transmission technology, DC cable transmission mode will play an important role in the future power transmission. The key to the development of DC cable transmission technology lies in the breakthrough of cable insulation materials, aiming at the shortcomings of traditional XLPE insulation, such as non-recycling, limited working temperature and complex processing technology. In order to promote the research and development of environmental protection DC cable insulation material, it is particularly necessary to develop environmental protection DC cable insulation material. The development status and key technologies of environmentally friendly DC cable insulation materials are reviewed systematically. The research progress of several common polyolefin insulation materials for DC cables and three modifications of polyolefin materials are summarized. Sexual approach:. Blending modification. Nano-modification and chemical grafted modification, compared with environmental protection DC cable insulation material compared with traditional cross-linked polyethylene, it can be seen that thermoplastic polyolefin. Especially the environmental protection DC cable insulation material based on polypropylene shows a good application prospect and can effectively improve the working temperature of DC cable. In the process of development of insulating material for environmental protection DC cable, more attention should be paid to the performance of the material at high temperature in order to give play to its advantages and improve the operating temperature of DC cable. At the same time, environmental protection DC cable insulation material aging research should be carried out simultaneously.
【作者单位】：清华大学电机工程与应用电子技术系电力系统及发电设备控制与仿真国家重点实验室;
【基金】：国家重点基础研究发展计划(973计划)(2014CB239500)~~
【分类号】：TM21
【正文快照】： 0引言1相对于交流输电系统,直流系统输送容量更大,可以节省大量土地资源,而且直流系统无交流——系统大范围的连锁故障风险,系统安全问题较小。因此直流输电技术将在远距离、大容量输电和分布式能源送出等方面被广泛采用。然而,随着超/特高压输电线路的建设,传统的架空输电线

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