Abstract
It is well known that polyethylene (PE) and cross-linked polyethylene (XLPE) are suitable insulating materials for underground cables. Samples of PE and of XLPE with MgO nanoparticles were investigated regarding their flashover behaviour with a uniform electric field and water droplets of various conductivities. In the present paper, the effect of the mounting arrangement of the water drops on the value of the flashover voltage and the effect of the volume of dripping water on the flashover voltage were also studied. Surface damages were analyzed using Scanning Electron Microscopy (SEM) studies and the study of the nano-structure of the samples was studied using the SAXS system.
Highlights
The insulating materials used for equipment of high voltages during operation for many years, are stressed by various factors
Needless to remark that it is obvious that the water conductivity affects greatly the droplet behavior and the flashover voltage
The more droplets were, the smaller was the value of the flashover voltage
Summary
The insulating materials used for equipment of high voltages during operation for many years, are stressed by various factors. A comparison is made of the two types of insulation materials, i.e. between a conventional polymer material (PE) and a polymer nanocomposite material It is an experimental study using samples of PE and samples of XLPE with nanoparticles of magnesium oxide (MgO) [1, 2]. The behavior of the said samples of insulating material with drops of water placed on the surface of samples of different conductivity from 0.8 μS/cm to 10000 μS/cm, under the effect of a uniform electric field. Apart from the experimental measurements of water drops of different conductivities, some diagnostics are reported regarding the results of surface erosion with the Small Angle X-Ray Scattering (SAXS) technique and with a Scanning Electron Microscope (SEM)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Engineering, Technology & Applied Science Research
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
