A multifactor framework linking insulation ageing and power network environments

The development of a multifactor framework which links ageing of insulation systems to power network performance is described. The framework provides a platform on which to develop models of plant reliability, identifying direct relationships between the working environment of the equipment and the ageing and failure processes of the insulation system. The evolution of the working environment is far from trivial and requires a stochastic modeling approach. The framework establishes links between the physics and chemistry of insulation degradation, the management of power quality and load flows in the network, thus linking plant reliability to asset management. In this paper, as an example of its use, the framework is used to provide a qualitative analysis and contrast of ageing and failure of insulation systems in high and low voltage networks. Finally, it is also shown to provide a platform for future research in the area.