Transmission and transformation project cost risk evaluation management method

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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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 requirements of the market, resulting in technical and economic problems. separation, resulting in too large an error in estimating the cost, and it is still difficult to meet the actual needs of engineering construction in the development of a market economy