51. The Risk Index System of Power Transformer Life Cycle Cost and Its Weight Determination

In order to evaluate the risk of transformer life cycle cost, we need a set of key indicators to reflect the cost risk of the transformer life cycle; thus, it is important to set up a scientific risk index system for the purpose of risk assessment. This chapter establishes a more comprehensive cost model in terms of the transformer life cycle and quantifies the uncertain factors of power transformer life cycle cost management; then we can obtain a risk assessment index system of the transformer life cycle cost. We apply an analytic hierarchy process to the cost risk indicators in respect of the transformer life cycle so as to construct the judgment matrix, get the weight coefficients of various risk indicators, and lay the foundation for risk assessment of transformer life cycle cost.