An Optimal Combination Mechanism of Virtual Power Plant Based on Fuzzy Alliance

Abstract

The invention discloses a virtual power plant optimization combination mechanism based on fuzzy alliance, relates to the field of distributed energy, and includes three stages, namely the first stage, the second stage and the third stage; the first stage is alliance benefit prediction evaluation; the second stage is alliance benefit distribution; the third stage is alliance member consultation. On the basis of the alliance game, the present invention further considers the influence of the uncertainty of the income value on the alliance structure, refines the fineness and perfection of the mechanism; introduces the ternary interval number to represent the uncertain factors in the alliance, and The corresponding virtual transaction optimization model is transformed into a ternary interval number programming problem, and the obtained decision results can not only transmit the fluctuation information of the upper and lower bounds of the uncertain factors, but also transmit the information of the most likely value of the uncertain factors, thus providing a basis for the decision-making of members of the distributed power generation. More valid information.

Description

technical field [0001] The invention relates to the field of distributed energy resources, in particular to an optimal combination mechanism of virtual power plants based on fuzzy alliances. Background technique [0002] Today, the energy supply and demand system is changing towards low-carbon and clean energy, and the energy network construction is developing towards centralized and distributed coordination (see Document 1: Liu Dichen, Peng Sicheng, Liao Qingfen, et al. Prospects for the future integrated power distribution system oriented to the energy Internet [J ].Power System Technology,2015,39(11):3023-3034.LIU Dichen,PENG Sicheng,LIAO Qingfen,etal.Outlook of future integrated distribution system morphology oriented to energy internet[J].Power System Technology,2015,39(11 ):3023-3034.). Virtual power plant, as a flexible aggregation technology of distributed energy (including distributed renewable energy), aggregates many distributed power sources, loads, energy stora...

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Problems solved by technology

[0013] 1. The current optimized combination schemes of virtual power plants are mostly considered from the perspective of a single investor or middleman, but fail to start from the perspective of distributed power members

[0014] 2. The existing research schemes mostly assume that different types of distributed power sources belong to the same investor, and fail to effectively consider the scenario that the distributed power sources integrated by the virtual power plant belong to different investment entities

[0015] 3. Most of the current research programs directly invest in the allocation of controllable units or energy storage according to the capacity of renewable energy, resulting in a fixed structure of the virtual power plant.

[0016] 4. The current optimal combination mechanism of virtual power plants mostly ignores the uncertainty of alliance profit distribution, and fails to effectively consider the impact of the uncertainty of profit distribution in the alliance process on the behavior of distributed power alliances

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