The Benefit Of Technical Economic Evaluation Of Transmission And Transformation Power Construction Projects

"Break the monopoly, Introduce the competition"is one of the main characters of market reformation in electrical industry, which caused the grid operation group become a competitor(player) in electrical power market gradually from the original monopoly. As an economic entity of electric power market, participating the market transaction independently, the grid operation group is aware of the importance of the investment of transmission and transfer power construction projects. The decision making of huge sum funds investment should be studied scientically, so as to get the optimal yield. The study of economic evaluation of transmission and transformation power construction projects should be the hotspot, which the experts, scholars and grid operation group must pay great attention to.The fundament of the economic evaluation of transmission and transformation power construction projects is analysized firstly in this paper, including the confirmation of evaluation parameters and the data acquirement of total investment, cost, operating revenue, tax and profit, which builds the fundament of the economic evaluation of transmission and transformation power construction projects.Secondly, the economic evaluation of individual transmission and transformation power construction project is studied in this paper, including the evaluation of financial indexes, ecomic indexes and the calculation of uncertain ecomic evaluation and price markup method of electricity quantity. This analysis solves the problem of economic evaluation of individual transmission and transformation power construction project.Subsequently, the multi-scheme comparision and selection of transmission and transformation power construction project is studied. Including the decision structure and the principle of multi-scheme comparision and selection, the value indexes and ratio indexes of multi-scheme comparision and selection, scheme comparision and selection with different calculation period and the multi-scheme comparision and selection based on linear programming.The post-evaluation model of transmission and transformation power construction projects is built according to the above analysis. Then, the post-evaluation index system of transmission and transformation power construction project is built, Author study the weight determining of post-evaluation index system combining the subjective weighting method based on the principle of function-driven, AHP , objective weighting method based on the principle of difference driving and entropy weight method, considering not only the decision advice of electrical ecomomic evaluation experts,but also the objective fact of transmission and transfer power construction projects. The hamming distance used in fuzzy theory and functional analysis is introduced into the post-evaluation model, After the weighted average processing of hamming distance, the post-evaluation indexes are mapped to the multidimensional space, and then mapped to the one dimensional space, by this way , the hamming distance between evaluation object and ideal point can be calculated, so we can rank the projects according to hamming distance and then realize the post-evaluation model of transmission and transformation power construction projects.At last, the economic evaluation method of transmission and transformation power construction projects and post-evaluation model are applied to a transmission and transformation power construction project of Chongqing Power Company, the result validates the feasibility of the economic evaluation method of transmission and transformation power construction projects and post-evaluation model built in this paper.A scientific, canonical and feasible method of the economic evaluation of transmission and transformation power construction projects is provided by research and exploration of the economic evaluation method of transmission and transfer power construction projects and post-evaluation model in this paper. On the other hand, there are also shortcomings in this paper, which should be further studied in subsequent research, so as to enrich and improve the the economic evaluation of transmission and transformation power construction projects.