Reducing Electricity Losses at 10/0.4 kV Transformer Substations by Replacing one Transformer With two and Using Photovoltaic Arrays

Abstract

Using the example of rural electrical networks in the Oryol region, it was revealed that transformers are loaded at 20-25%. The use of photovoltaic arrays (PV) in the grid structure leads to an additional seasonal reduction in load. A method has been proposed to reduce electricity losses in transformer substations by replacing one transformer with two of lower power. An assessment was made of the reduction in losses and their cost when using the proposed method, including the use of photovoltaic arrays.