A Review of Transformer Load Capacity Evaluation

Abstract

With the rapid development of China's new energy industry, the transformer load has changed significantly, which accelerates the insulation aging of the transformer. Therefore, real-time assessment of transformer load capacity and full exploitation of transformer load potential under the premise of safeguarding equipment safety is the main direction of current development. The hotspot temperature, as a key factor affecting transformer load capacity assessment, has a direct impact on the accuracy of the load assessment by its calculation. This paper summarizes the transformer load capacity assessment methods, analyzes the influence of each state quantity on the load capacity, and provides ideas for the future development of load capacity assessment by analyzing the advantages and disadvantages of current transformer load capacity assessment methods.