Incremental distribution network double-layer optimal allocation method with distributed power supplies

Abstract

The invention relates to an incremental distribution network double-layer optimal allocation method with distributed power supplies, and belongs to the technical field of power system planning. The technical scheme is as follows: obtaining the data of the distributed resources such as the regional wind speed and the sunlight intensity of the incremental distribution network in a certain time series and analyzing and modeling the DG and the load of the distribution network; classifying the uncertainty factors of the DG and constructing a comprehensive fuzzy evaluation method to evaluate the uncertainty of distributed power generation on the basis of fuzzy mathematics theory and analytic hierarchy process (AHP); establishing the mathematical model of incremental distribution network system planning and design based on the double-layer optimization theory and determining the upper-layer capacity optimization model and the lower-layer dispatching optimization model as well as the related constraints; and selecting the optimal solution by the system. According to the incremental distribution network double-layer optimal allocation method with the distributed power supplies, a better reference can be provided for planning and decision-making of the incremental distribution service.

Description

technical field [0001] The invention relates to a double-layer optimal configuration method of an incremental distribution network including distributed power sources, and belongs to the technical field of power system planning. Background technique [0002] With the issuance of "Several Opinions on Further Deepening the Reform of the Power System" (Zhongfa [2015] No. 9), it marks the beginning of the new power reform, and all aspects of my country's power industry will usher in brand-new development. After more than three years of advancement, the new round of power system reform has entered the critical period of the deep-water area. As the biggest highlight, the incremental distribution network reform has successively implemented three batches of pilot projects, with 320 projects. In March 2018, the National Energy Administration issued the "Notice on Further Promoting the Reform of Incremental Power Distribution Business", which clarified that the planning of incremental...

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Problems solved by technology

[0003] For the configuration optimization of distributed generation in the distribution network, the previous related research mainly has the following defects or deficiencies: the distribution characteristics of distributed generation in the whole time sequence are not considered, which makes the optimization of DG site selection and fixed capacity in distribution network As a result, certain errors are produced; some studies only consider the capacity allocation in the fixed-point situation or only consider the location problem with fixed capacity. Although the difficulty of the problem and the complexity of the algorithm are reduced to a certain extent, the application scenarios are greatly affected The solution obtained is not accurate enough; for the optimization problem of DG in the distribution network, it is necessary to make appropriate improvements to the selected intelligent optimization algorithm to speed up the convergence without losing the feasibility and reliability of the solution; Most of the research only considers the analysis and research on a single optimization objective. Considering the actual needs, it is usually necessary to deal with multiple optimization objectives in order to facilitate decision-making and application.

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