Method for calculating the economic profitability of power transformers and method for the optimization of the economic profitability of power transformers

摘要

A method for calculating the economic profitability of power transformers through standardized parameters, economical parameters, technical data from the power transformers and data from the initial investments is disclosed, said method for calculating the economic profitability of power transformers comprising: ;a) calculating the total ownership cost (TOC) of the power transformer as a function of a depreciation period (40); b) calculating the revenue of the power transformer in a total investment to meet a determined demand; and c) use of the revenue of the power transformer and of the total ownership cost (TOC) of the power transformer to determine the total economic profitability of the power transformer. A method for the optimization of the economic profitability of power transformers is further disclosed, comprising the steps of: (i) obtaining a first power transformer, using this first power transformer operating at limits close to the maximal load and raising the temperature at the hot spot limits during a first minimal limit of depreciation period; (ii) obtaining a first period of optimized annual returns; (iii) obtaining a second power transformer, using this second power transformer operating at limits close to the maximal load and raising the temperature at the hot spot limits during a first minimal limit of depreciation period; (iv) obtaining a second period of optimized annual returns; (v) repairing the first power transformer, using this first repaired power transformer operating at maximal load and raising temperature at the hot spot limits during a second minimal depreciation period limit; (vi) obtaining a third of period of maximal annual returns; (vii) repairing the second power transformer, using this second repaired power transformer operating at maximal load and raising temperature at the hot spot limits during a second minimal depreciation period limit; (viii) obtaining a fourth period of maximal annual returns; and (ix) selling the first and second power transformers.