关键词: 输电工程, 工程造价, 指标体系, 关键影响因素, 小样本估算

Abstract:

Along with the diversification of project construction technology, the conventional evaluation model of power transmission project cost based on unit cost cannot meet the requirements of accuracy, comparability and so on, and it is lacking of instructive and practical operation ability in actual engineering cost management. In order to further improve the breadth and accuracy of the project cost index system, in consideration of the project’s characteristic factors, this paper established a three-level evaluation index system for power transmission project with using principal component analysis （PSA） and support vector machine （SVM） method, based on collecting & processing the sample data of power transmission project, and digging the key influencing factors of project cost. Then, the index evaluation model that could reflect the general rules of power transmission project cost was established, and the safety zone of each indicator was calculated. The sample test results show that the index evaluation system can control the evaluation error within 10%, which can provide more reliable reference information for project cost management.

Key words: power transmission project, project cost, index system, key influencing factors, small sample estimate