Research on Capacity Selection of 110 KV Main Transformer Based on Economic Analysis

Abstract: Currently, the selection of main transformer capacity for substations primarily relies on factors such as load density in the power supply area and load forecasting results, without verification from an economic perspective. This paper constructs a life cycle cost calculation model to analyze the differences in life cycle cost investment for selecting different capacities of main transformers for 110 kV substations from an economic evaluation perspective, providing a reference for planning investment decisions.