Related Experiment Video
Updated: Nov 20, 2025
09:27
Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
Published on: August 16, 2012
11.0K
Nano-sized composite improving the insulating performance of insulating paper using low-temperature plasmas
Shilin Wu1,2, Cheng Zhang2,3, Chuansheng Zhang2,3
1State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China.
Nanotechnology
|January 25, 2021
Summary
Plasma-enhanced chemical vapor deposition (PECVD) improved oil-paper insulation. SiO2 nanoparticles boosted flashover voltage by 15.1% in air and 24.6% in oil, enhancing dielectric strength.
Area of Science:
- Materials Science
- Electrical Engineering
- Nanotechnology
Background:
- Oil-paper insulation is crucial for power systems.
- Improving its flashover performance is essential for reliability.
- Nanostructured dielectric composites offer a promising solution.
Purpose of the Study:
- To enhance the surface flashover performance of oil-paper insulation.
- To investigate the effect of SiO2 nanoparticles deposited via PECVD.
- To analyze the impact on dielectric strength in air and transformer oil.
Main Methods:
- Plasma-enhanced chemical vapor deposition (PECVD) to deposit SiO2 nanoparticles.
- Scanning electron microscopy (SEM) to characterize nanoparticle distribution.
- DC surface flashover voltage testing in air and transformer oil.
Main Results:
- Uniform deposition of SiO2 nanoparticles (100-250 nm) on ceramic fibers.
- 15.1% increase in DC surface flashover voltage in air.
- 24.6% increase in breakdown voltage at the liquid-solid interface in transformer oil.
Conclusions:
- SiO2 nanoparticles modify electron injection barriers, inhibiting charge accumulation.
- Nanoparticles capture charges, affecting streamer development and increasing dielectric strength.
- PECVD offers a novel method for enhancing insulation properties of dielectric materials.
