电厂机组大修的工期优化问题

Duration Optimization for Power Plant Unit Maintenance

机组检修是保证电厂正常运行的必要环节,工期优化是机组大修的基本目标之一。采用等效化简的方法,把机组大修的大型工程项目化为小型项目,即在不影响解的最优性的前提下,将其包含的大量工作以及工作的时间—费用模式大幅度减少,使原来不可计算的问题变得可以计算,使复杂的问题变得简单。研究了项目网络计划中机动时间与路长的规律,利用这些新的规律寻找计算对象中的冗余工作及模式,并将其去掉,进而实现问题的简化。

Unit maintenance is essential to ensure normal operation of power plant,and one basic objective of the unit maintenance is duration optimization.In this paper,method of equivalent simplification is applied to transform large project of unit maintenance into small one.In other words,on the premise of ensuring optimality of result,the work load and time-cost mode will be decreased greatly,making the incomputable or complicated issues computable and simple.The regulations of float time and path length in project network planning are studied;then the new regulations are applied to find and eliminate the redundant tasks and modes for computation object;thus simplifying the issues.unit maintenance;duration optimization;equivalent simplification;float time