Virtual power plant combination optimization method and model with consideration of distributed power volatility

Abstract

The invention discloses a virtual power plant combination optimization method and model with consideration of distributed power volatility. Distributed power sources are selected reasonably by comprehensively considering various factors like the various geographical locations, environmental conditions, resource distribution in different areas and outputs of all distributed power sources are predicted; according to a matching degree calculation formula, matching degrees between predicted outputs of all distributed power sources and a power consumption plan of a virtual power plant are calculated; all distributed power sources are introduced to the virtual power plant in a lowest matching degree state; whether the virtual power plant formed by the distributed power sources satisfies the scheduling requirement of the system is determined; and a virtual power plant is formed. According to the invention, on the basis of the multi-stage nonlinear integer programming method, a virtual power plant combination optimization model with uncertain situations is established; and the model uses the running states of the distributed resources as decision-making variables and the minimized matchingdegree as an objective, and the virtual power plant combination decisions can be regulated in real time based on the power consumption plan of the system.

Description

technical field [0001] The invention relates to a power system optimization method, in particular to a combined optimization method and model of a virtual power plant considering the fluctuation of distributed power sources. Background technique [0002] In recent years, virtual power plant, as a new form of distributed power generation development, has attracted more and more attention from the academic circles. The virtual power plant under the background of the smart grid has been expanded and extended. It can be understood that the distributed power supply, controllable load and energy storage system in the distribution network are combined as a special power plant to participate in the grid operation through the distributed power management system. In this way, the contradiction between smart grid and distributed power can be well coordinated, and the value and benefits brought by distributed energy to the power grid and users can be fully explored; unlike microgrids, v...

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Problems solved by technology

[0004] The combination method of the existing virtual power plant is divided according to the region, and all the distributed resources in the region are aggregated and expressed, and the obtained single virtual power plant model representing the region does not consider the active optimization problem. In some scenarios Unable to meet the requirements of economical operation of the power system

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