Transmission and transformation project cost risk evaluation management method

A technology for engineering cost and risk assessment, applied in data processing applications, instruments, calculations, etc., can solve problems such as too large error in estimated cost, separation of technology and economy, difficulty in meeting actual needs of engineering construction, etc., to achieve optimal quotation strategy, The effect of increasing the success rate of bidding

Inactive Publication Date: 2016-02-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, although these methods can solve the rapid estimation of project cost in the progress of some engineering projects, the disadvantage is that the most active factors in the competition are set as fixed values, which is difficult to adapt to the req

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Embodiment Construction

[0022] The solution of the present invention will be described in detail below.

[0023] A cost risk assessment management method for a power transmission and transformation project, the method includes the following steps:

[0024] 1) Receive the historical sample data of the input power transmission and transformation project, and set the weighting coefficient n according to the risk;

[0025] 2) Initialize the population size of the chaotic particle swarm to establish the chaotic particle swarm model, and optimize the parameters of the chaotic particle swarm model according to the chaotic particle swarm optimization algorithm;

[0026] 3) Determine the number of iterations of the chaotic particle swarm model and the optimal value m of the chaos factor according to the historical sample data and the optimized chaotic particle swarm model;

[0027] 4) Determine the parameters, learning factor C 1 , C 2 , population size N, evolution times N;

[0028] 5) Operate the partic...

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Abstract

The invention relates to a transmission and transformation project cost risk evaluation management method. The method comprises the following steps: 1) receiving input historical sample data of a transmission and transformation project, and setting a weighting coefficient n according to the risk; 2) initializing the population size of a chaos particle swarm, establishing a chaos particle swarm model, and optimizing parameters of the chaos particle swarm model according to a chaos particle swarm optimization algorithm; 3) determining the iterative frequency of the chaos particle swarm model and the optimal value m of a chaos factor according to the historical sample data and the optimized chaos particle swarm model; 4) determining the parameters, learning factors C1 and C2, the population size N and the evolutional frequency N; 5) performing operations on particles according to formulae 1 and 2, and if a maximum algebra is reached or a satisfied solution is obtained, ending the optimization process, otherwise, returning to the step 4); and 6) receiving input practical sample data of the transmission and transformation project, and according to the practical sample data of the transmission and transformation project, generating a transmission and transformation project cost evaluation result. The method has the beneficial effects that the cost of a new project can be accurately estimated by an investor in a feasible research stage of early project construction, and budget estimation checking personnel can be helped to perform reasonable and quick cost checking in a preliminary design stage.

Description

technical field [0001] The invention relates to cost risk assessment of power transmission and transformation projects, in particular to a management method for cost risk assessment of power transmission and transformation projects. Background technique [0002] With the development of science and technology, many cost estimation methods have appeared in the field of domestic engineering cost. However, although these methods can solve the rapid estimation of project cost in the progress of some engineering projects, the disadvantage is that the most active factors in the competition are set as fixed values, which is difficult to adapt to the requirements of the market, resulting in technical and economic problems. separation, resulting in too large an error in the estimated cost, and it is still difficult to meet the actual needs of engineering construction in the development of a market economy. Contents of the invention [0003] The purpose of the present invention is t...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
Inventor 王朋方向刘婷凌俊斌
Owner STATE GRID CORP OF CHINA
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