What is it about?
Surge arrester is a device used to protect the power grid against rapid voltage rises caused by lightning or other disturbances. It naturally degrades over time, and this process can be accelerated by absorbing energy from disturbances. The process of degradation is also related to temperature. Thus, in this work we elaborated in computer a model for simulating and calculating temperature in a surge arrester with porcelain surface. The simulations were compared with measurements using an infrared camera.
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Why is it important?
The model elaborated in the work allows to estimate the temperature inside the arrester from measurements made on its surface. Thus, it is possible to evaluate the degradation state of the arrester. In addition, the estimated temperature with the model was consistent with the measurements made.
Perspectives
I was very pleased with the publication of the article, as it was the result of research conducted in the context of an undergraduate research program. The article also condenses knowledge developed over the course of a few years by professors and students from our high voltage lab. The method presented in the article enables a more effective monitoring of the lightning arrester, which is an essential piece of equipment for the power grids.
Arthur Francisco Andrade
Universidade Federal de Campina Grande
Read the Original
This page is a summary of: Thermal Behaviour Analysis in a Porcelain-Housed ZnO Surge Arrester by Computer Simulations and Thermography, High Voltage, June 2019, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/hve.2019.0048.
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