非线性均压材料的设计理论与参数调控

发布时间：2019-07-22 18:45

【摘要】：具有非线性电学参数的材料,其电导率或介电常数能够随着空间电场做出自适应的改变,从而达到智能改善绝缘介质空间电场分布均匀性的效果,可用于缓解高压设备局部集中的高电场。目前,国内外已经能够制备出具有高稳定水平的非线性电导特性的材料,如以氧化锌压敏微球为填料,以绝缘材料为基体的复合物。该文详细综述了国际上对于非线性电导材料均压的设计理论,介绍了如何根据实际改善电场分布的需求选择非线性均压材料的参数。在此基础上,总结国际上学者对于在材料制备过程中调控材料非线性参数以满足均压设计需求的研究工作。本文也对非线性均压材料在应用于实际高压设备方面的进展做了简单介绍。
[Abstract]:The conductivity or dielectric constant of materials with nonlinear electrical parameters can be changed adaptively with the space electric field, so as to achieve the effect of intelligently improving the uniformity of the spatial electric field distribution of the insulating medium, and can be used to alleviate the high electric field in the local concentration of high voltage equipment. At present, materials with high stable nonlinear conductivity, such as zinc oxide varistor microspheres as fillers and insulating materials as matrix, have been prepared at home and abroad. In this paper, the design theory of voltage equalizing for nonlinear conductive materials in the world is reviewed in detail, and how to select the parameters of nonlinear voltage equalizing materials according to the actual needs of improving the electric field distribution is introduced. On this basis, the research work of international scholars on regulating the nonlinear parameters of materials to meet the needs of pressure sharing design in the process of material preparation is summarized. The development of nonlinear pressure equalizing materials in practical high pressure equipment is also briefly introduced in this paper.
【作者单位】：清华大学电机系电力系统及发电设备控制和仿真国家重点实验室;
【分类号】：TM21

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