高电压技术2017，Vol.43Issue(9)：2818-2824,7.DOI:10.13336/j.1003-6520.hve.20170831007
纳米添加量对纳米改性变压器油宽频介电弛豫特性的影响
Influence of Nanoparticle Concentration on Frequency Domain Spectroscopy Properties of Transformer Oil Based on Nanoparticles
董明 1李阳 1戴建卓 1任明 1Christof Sumereder 2Michael Muhr2
作者信息
- 1. 西安交通大学电力设备电气绝缘国家重点实验室,西安710049
- 2. 格拉茨技术大学高压工程与系统管理研究所,A-8010,奥地利
- 折叠
摘要
Abstract
In order to explore the relationship between microstructure and macroscopic performance of transformer oil-based nanofluids,we prepared nano-modified transformer oil with silicon dioxide nanoparticles and measured its stability.Moreover,we measured the dielectric spectroscopy of pure oil and oil-based nanofluids and investigated the influence of nanoparticle concentration on the frequency domain spectroscopy of nano-modified oil.The results indicate that,compared with pure oil,two obvious polarization peaks can be observed in the imaginary part of the complex permittivity of oil-based nanofluids in the measured frequency domain of oil-based nanofluids,and the value of low frequency polarization peak is higher than the high frequency one.No obvious polarization peak is presented in the whole measured frequency range.As the nanoparticle concentration increases,both the values of two polarization peaks increase,and the low frequency polarization peak has the tendency of moving to the high frequency.The Schwarz'electrical double layer theory is used to explain this phenomenon.关键词
微观结构/纳米改性变压器油/稳定性/介电谱/低频极化/双电层Key words
microstructure/transformer oil-based nanofluid/stability/dielectric spectroscopy/low frequency polarization/electrical double layer引用本文复制引用
董明,李阳,戴建卓,任明,Christof Sumereder,Michael Muhr..纳米添加量对纳米改性变压器油宽频介电弛豫特性的影响[J].高电压技术,2017,43(9):2818-2824,7.
