Low-carbon Evaluation System and Solution Optimization of Transmission and Transformation Project Based on AHP-EWM
Under the requirement of"double carbon",it is imperative for transmission and substation projects developing in the direction of energy saving and carbon reduction.In order to grasp the intrinsic relationship between carbon reduction and cost and benefit of the power transmission and transformation projects,a cost-benefit evaluation index system for power transmission and transformation projects is established.The influence weight of each index on cost and benefit is determined by applying the analytic hierarchy process(AHP),then the entropy weight method(EWM)is used to standardize and correct the indexes.Afterwards,1 000 sampling points are selected for sensitivity analysis for each technical solution,so as to establish a more complete power transmission and transformation project.Based on the established index system and mathematical model for 110 kV and 220 kV cases,the error of the criterion layer and index layer is less than 10％.Eight alternative carbon reduction options are proposed,and the net present values and cash flow of the eight options are calculated and scored.Finally,the conclusions are obtained as follows,the highest weighting in the first criterion tier is given to the technology of adopting new transformers,and in the second criterion layer,the highest weighting is given to transformer load loss.The transformation according to scheme 7 is expected to achieve higher benefit at lower cost.
power transmission and transformation projectcarbon reductionanalytic hierarchy process(AHP)entropy weight method(EWM)new transformer
万方数据
维普
