Engineering cost whole process node early warning system and operation method thereof

Abstract

A project cost whole process node early warning system comprises a similar project data extraction module, a data analysis module, a prediction model establishment module, a training result test module, an error correction improvement unit, a feature vector extraction module, a data comparison module and an early warning module. The data analysis module analyzes similar engineering original data to extract a data variable relationship therein, the feature vector extraction module performs feature vector extraction on node data based on PCA principal component analysis, and then the prediction model establishment module constructs a cost prediction model. Then the training result test module tests and operates the constructed model to obtain a theoretical value, the error correction improvement unit adjusts parameters of the prediction model based on an error between the theoretical value and a true value, and finally the data comparison module compares the predicted cost of each node with a normal range value, and performs early warning through the early warning module when the predicted cost exceeds the normal range. According to the design, accurate early warning of the cost management and control node of the power transmission line engineering project is realized.

Description

technical field [0001] The invention belongs to the technical field of engineering cost early warning, and in particular relates to a node early warning system in the whole process of engineering cost and an operation method thereof. Background technique [0002] It is very difficult to predict the cost of transmission line engineering projects in the preliminary work of the project. The traditional method is to use various prediction indicators and price limits to make rough estimates. However, these methods have certain problems, because for transmission For line engineering, each project has its own characteristics, and any estimation based on one or two indicators is difficult to accurately describe the inherent technical and economic characteristics of a project. In the process of project cost prediction, In order to further strengthen the management and control of the project cost process, reduce the cost of power grid construction, reduce pricing errors, prevent proje...

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Problems solved by technology

[0002] It is very difficult to predict the cost of transmission line engineering projects in the preliminary work of the project. The traditional method is to use various prediction indicators and price limits to make rough estimates. However, these methods have certain problems, because for transmission For line engineering, each project has its own characteristics, and any estimation based on one or two indicators is difficult to accurately describe the inherent technical and economic characteristics of a project. In the process of project cost prediction, In order to further strengthen the management and control of the project cost process, reduce the cost of power grid construction, reduce pricing errors, prevent project construction and financial risks, promote project construction compliance with laws and regulations, and improve the "lean" level of cost control, it is necessary to carry out early warning on the control nodes of the whole process of project cost

[0003] The early warning system currently used can only perform rough forecasting and estimation work. Not only is the accuracy low, but the operation process is more troublesome, and it is difficult to apply to the early warning of the cost control node of the transmission line project. The improvement makes it suitable for early warning work of control nodes in the whole process of project cost

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