Production of Electrical Porcelain Insulators from Local Raw Materials: A Review

This paper reviewed the production of electric porcelain insulators utilizing from local raw materials from developing countries. The raw materials used were feldspar, quartz/silica and kaolin. The chemical composition, mineralogy, and thermal properties of the raw materials were characterized using AAS, XRD, and TGA respectively. Different weight percentage combinations of the individual raw materials were investigated by the authors. Most of the results showed relatively acceptable porcelain insulators properties such as low water absorption, porosity, high insulation resistance, dielectric strength and bulk density. The paper showed that electric porcelain insulators with good properties can be produced from available local raw materials in some developing countries using appropriate formulations. However, for production of improved porcelain insulators properties, suggestions were made on the areas for future research.

Predicting the Mechanical Properties of Electric Porcelain Using ANN and MLR

Electric porcelain has a long history of being used as insulators and bushings in Power T&D. Its microstructure and composition has a large influence on the mechanical performance. In this paper, two different methods, including Artificial Neural Network (ANN) and Multi-Linear Regression (MLR), were employed for predicting mechanical properties of electric porcelain including elastic modulus, bending strength and fracture toughness. Most predicted values by ANN are in accordance with the actual values. MLR gives the best accurate results within the low average error level of ~1%. According to the statistical analysis, two methods are reliable and their predicted results are effective. Formulae obtained from MLR are recommended to be used for predicting the mechanical properties of electric porcelain as experienced formulae.