Power grid projects are related to national economy and people's livelihood. It is particularly important to controlthe cost. And when controlling the cost, it is a key link to evaluate the cost. In the actual cost evaluation of the past, itis commonly used to compare the settlement amount with the approved budget amount. However, this method is moregeneral. And it has strong subjectivity. In this paper, the probability analysis and the power grid project evaluation arecombined. Based on the past similar projects cost library, realize the standardization, rationalization and objective of thecost evaluation. Finally, take a substation and a line project for actual evaluation. The results show that this technologycan realize the intelligent evaluation of power grid projects, which can be further promoted and applied.
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