Application of a Case-Based Reasoning Method in Estimating the Power Grid Project Cost

The accuracy of the power grid construction cost estimation is essential to the whole-process cost management. However, the estimation of the power grid project cost calculated by traditional methods varies largely, which cannot meet the needs of estimation accuracy. This paper proposes a case-based reasoning (CBR) method for estimating the power grid project cost. This method, supported by fuzzy mathematics, analytical hierarchy process (AHP) and rough set, makes full use of expert experiences and rule-based reasoning to improve the estimation accuracy that calculated only by the case-based reasoning method. And then, an actual case is involved in this paper to verify its scientificity and practicality. The case-based reasoning cost estimating method will provide valuable references for the cost decision-making in power grid projects.