Virtual power plant distributed power supply combination planning system and method

A technology of distributed power supply and virtual power plant, which is applied in the direction of instrument, data processing application, prediction, etc., can solve the problems of low reliability of power supply of virtual power plant

CN104517161AActive Publication Date: 2015-04-15SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-04-15

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Abstract

The invention discloses a virtual power plant-based distributed power supply combination planning system and a virtual power plant-based distributed power supply combination planning method. According to characteristics of output power of the distributed power supplies and according to historical output power of the uncontrolled distributed power supplies, an interval set of the output power of the uncontrolled distributed power supplies is obtained; in a planning and scheduling cycle, with the minimum deviation between the predicted output power of a combined distributed power supply and the expected capacity of a virtual power plant as an aim, a virtual power plant-based distributed power supply combination optimizing model is established, and the optimizing model is solved to obtain an optimal combining scheme of the distributed power supplies. Through establishment of the virtual power plant, the distributed power supplies can be flexibly and efficiently integrated, so that the problem that the distributed power supplies are connected into a power grid on a large scale is solved; through reasonable selection of types and capacities of the distributed power supplies, the problems such as power supply reliability caused by uncertainty of the output power of the distributed power supplies can be solved, and the utilization ratio of the distributed power supplies can be improved.
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Description

technical field

[0001] The invention belongs to the technical field of distributed power optimization planning, and in particular relates to a distributed power combination planning system and method for a virtual power plant. Background technique

[0002] Distributed power generation refers to small, decentralized and efficient and reliable power generation units that generate power from several kilowatts to hundreds of megawatts and are arranged near users. The main types include wind power generation, photovoltaic power generation, gas turbines, and fuel cells. Distributed power generation has the incomparable advantages of centralized power generation and can be used as a useful supplement to centralized power supply. However, compared with traditional power sources, distributed power generation has many particularities, such as volatility, decentralization, and uncontrollability. How to reduce the adverse impact of distributed generation on the power grid and maximize i...

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Embodiment Construction

[0042] Below in conjunction with embodiment the present invention will be further described.

[0043] A virtual power plant is a collection of small and ultra-small distributed power sources, controllable loads, and energy reserves supervised and controlled by an energy management system. Distributed power is not restricted by region, and its capacity can be large or small. It can be dispersed at different nodes of the medium-voltage distribution network. It can be uncontrollable distributed power such as wind power and photovoltaics, or it can be micro gas turbines, small diesel engines, fuel Controllable distributed power sources such as batteries. figure 1 Among them, the distributed power combination planning system of virtual power plant includes: data acquisition module, uncontrollable distributed power output power prediction module, power combination optimization module and virtual power plant scheduling module, uncontrollable distributed power output power prediction ...