A new life cycle cost model of power transformer and its comprehensive sensitivity analysis

The establishment of power transformer life cycle cost model is of great significance for improving the efficiency of grid assets management. Considering the dynamic change of money with time, this paper integrates environmental cost and preventive test cost into the model, and completes other aspects to build a more comprehensive transformer life cycle cost model. In addition, considering sensitivity coefficient and the parameters value, the comprehensive sensitivity analysis method is presented. Combined with a practical example, the paper makes a ratio analysis of the transformer life cycle cost and verifies the scientific rationality and superiority of the comprehensive sensitivity analysis method by making a comparison of traditional sensitivity analysis method and the comprehensive sensitivity analysis method. The method has certain guiding significance in practical engineering of transformer cost control.