The probability distribution and risk curve of schedule and cost are obtained by statistic analysis, providing a basis for risk evaluation of engineering projects.
By applying the theory of reliability to the analysis of the life distribution and operating cost of car axle, the model of economical policy decision about repair cycle of car axle is set up.
通过对车轴寿命分布及其运用成本的分析，运用可靠性理论建立了车轴检修周期经济决策模型。
3
Results from economic analysis and case simulations show that using this approach the transient voltage quality level in distribution system can be evidently improved without cost increase.