区间分析法在电力变压器全寿命周期成本模型中的应用

提出了区间全寿命周期成本的分析方法以及电力变压器区间全寿命周期成本的估算模型.该模型涵盖了变压器生命周期内发生的一次投资成本、损耗成本、环境成本、运行维护成本、故障成本以及报废成本等,采用等年值法进行折算,通过比较年区间全寿命周期成本判断方案的经济性优劣.模型能够较为合理地将变压器全寿命周期成本各参数处理为区间数,在计...

Transformer life cycle cost model based on interval analysis

The power transformer life cycle cost model is proposed based on the interval analysis,which covers the investment cost,loss cost,environment cost,operation and maintenance cost,failure cost and discard cost,produced in the life cycle of transformer and undertaken by the yearly-equivalence method. The best economy case is determined by comparing the yearly interval life cycle cost. Different parameters of transformer life cycle costs are reasonably treated as the interval numbers and the uncertainty of each parameter is taken into account in the whole calculation process. The computing software IntervalCal,programmed with C++ language,is used to estimate the interval cost,and only once is necessary to get the transformer life cycle cost containing the uncertain risk. The model is applied in the transformer selection of a 500 kV substation to verify its effectiveness. The interval life cycle costs of three schemes are calculated and the best one is determined by cost comparison.