Security and lifespan improve the performances of HV/LV transformer substations

The aim of this paper is to show the approach carried out by the HV/LV prefabricated substation department from Areva T&D to obtain a total-security and to minimise the environmental impact of these products at the end of their life, and this in accordance to the latest requirements from the standard of the HV/LKV prefabricated substation [1]. This approach necessitates the breakdown of each of the stages from design to commissioning of this products. These transformer substations, up to now considered as an enveloped enclosing electrical equipment, are involved in the revelation of the performance of the whole assembly. Throughout the paper various test results will confirm each hypothesis.