Research On Theories And Decision Support System For The Post-evaluation Of Power Grid Investment Benefit

As a critical infrastructure of national economy and social development, power grid development has always received great attention. With the rapid development of economy in our country, the social demand for electricity increases continuously, more and more money is invested to power grid by power grid enterprises. At the same time, in order to meet the needs of intensive management, power grid enterprises need to strengthen the restraint to investment behavior, correctly handle the relation of investment and benefit to achieve the maximum economic and social benefits, which brings enormous operating pressure to power grid enterprises. Therefore, how to understand investment benefit of power grid objectively and quantitatively is the key problem that the power grid enterprises face currently. On the basis of learning and drawing research results at home and abroad, a research to the theory, evaluation index system and evaluation model related power grid investment benefit post-evaluation was done. The development of the key technology in information realization was studied, combined with the needs of power grid investment benefit post-evaluation. Power grid investment benefit post-evaluation decision support system was proposed. The research work and achievements of this paper were reflected in the following five aspects:(1) Based on the existing power grid investment evaluation system, the concept of power grid investment benefit post-evaluation was proposed, its meanings and roles were comprehensive and systematic described, which provided a new investment management thinking for the powder grid companies. Economical theory was used in constructing the powder grid C-D production function model and profit function model, that analyses the impact factors of the powder grid investment benefits, providing a theoretical basis for the power grid investment benefit post-evaluation methods.(2) Considering the economic benefit and social benefit, the index system of power grid investment benefit post-evaluation was designed. A fuzzy comprehensive evaluation method called "Rejection Grade Universe" was put forward to be used for power grid investment benefit post-evaluation, and a complete comprehensive evaluation model was established, which provided a methodological guidance for power grid investment benefit post-evaluation practice.(3) In accordance with the requirements to the integrity, timeliness and accuracy of data related power grid investment benefit post-evaluation, the view was put forward that it can be taken as an in-depth application of power enterprise data center, a ETL system based on lightweight architecture was researched and developed, and the key solutions to the problems were discussed,such as the data model, data storage and update strategy, data quality control, which provide effective technical support for the construction of the integrated data platform based on data fusion.(4) According to the limitations of less universality for a number of comprehensive evaluation decision support systems, the evaluation model construction method based on AOV network was proposed, which made the "Free Dynamic Definition and maintain" of evaluation model possible. In this paper, the overall framework of the power grid investment benefit post-evaluation decision support system was designed, the key technology of the system was discussed, and the development of prototype system was completed, which provided an analytical application platform for Grid investment benefit post-evaluation.(5) Taking six municipal electric power Companies as research objects, the paper established the integrated data platform based on the index system and evaluation model. Taking advantage of grid investment benefit post-evaluation decision support system, empirical analysis on relevant data in2009was made. Reasonable suggestions on the power grid investment demand of companies were also put forward.