电工技术学报2017，Vol.32Issue(16)：44-60,17.DOI:10.19595/j.cnki.1000-6753.tces.161782
非线性均压材料的设计理论与参数调控
Progress of Theory and Parameter Adjustment for Nonlinear Resistive Field Grading Materials
何金良 1杨霄 1胡军1
作者信息
- 1. 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 北京 100084
- 折叠
摘要
Abstract
Materials with nonlinear electrical parameters possess field dependent conductivity or permittivity which can vary adaptively with the space electric field distribution. Thus, they can automatically enhance the uniformity of field distribution in insulation dielectrics and can be used to limit local overstress in high voltage apparatus due to concentrated electric field. Recently, domestic and international researchers have manufactured the materials with stable and nice nonlinear characteristics on conductivity, such as composite materials consisting of ZnO microvaristor fillers and insulation matrix. This paper elaborated the theory on design of materials with nonlinear conductivity for resistive field grading in high voltage apparatus. The theory mainly deals with how to determine the parameters of the nonlinear materials according to specific field grading requirements. The development of international researches on the parameter regulation of nonlinear materials during manufacturing process to meet those specific requirements is summarized. Finally, the progress of the nonlinear materials in practical high voltage apparatus is briefly introduced.关键词
非线性电导材料/均压设计理论/性能调控/填料体积分数/压敏电场Key words
Nonlinear conduction material/theory for resistive field grading/parameter adjustment/filler concentration/switching field分类
信息技术与安全科学引用本文复制引用
何金良,杨霄,胡军..非线性均压材料的设计理论与参数调控[J].电工技术学报,2017,32(16):44-60,17.
