Design and Analysis of a Compact High-Voltage Insulation System for Reliable Power Transmission

Abstract

High-voltage systems of power transmission demand very high reliability of the insulation systems in order to operate safely, secure stability of the system, and deter possible electrical failures where dielectric breakdown and partial discharge occur. The traditional insulation systems frequently depend on the physical clearance and huge insulating material to support the high electric stress that are in turn expected to enlarge, add weight, and hike the expenses of the transmission infrastructure. Increasingly, as companies require small-sized substations, underground power cables and dense power networks, smaller space-based insulation systems need to be developed that provide high dielectric performance. This study is concerned with design and analysis of a small high voltage insulation system that tries to enhance the reliability of electrical systems in minimising the size of insulation. The proposed system will have an optimised electrode geometry, dielectric materials, and a multi-layered insulation arrangement to manage the distribution of electric fields and minimise the stress concentrations in sensitive areas. The appropriate insulsion materials that have to be considered are the epoxy resin, cross-linked polyethylene (XLPE) and silicone-based polymers in that they possess a high dielectric strength, thermal and mechanical stability. Simulation based methods are used to analyse thermal performance and electric field analysis of the behaviour of the insulation structure at high-voltage operating conditions. Parameters analysed include the intensity of the electric field, the distribution of temperatures and the insulation stress so as to make sure that the system does not operate under hazardous electrical and thermal conditions. The findings prove that the proposed small insulation design is efficient in lessening the concentrations of electric fields and improving the breakdown resistance than the current insulation systems. Moreover, the optimised structure enhances the cooling of the system and its general reliability. Hence, the designed compact high-voltage insulated system provides a favourable solution to contemporary energy transmissions such as in small-scale substations, underground transmission systems, and enhanced smart grid systems where size is a significant factor and availability of reliability of operation.