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Day-ahead economic dispatching method for micro-grid

A microgrid and fuel cell technology, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve the problems of carbon emission pollution, abandoning wind and light in microgrids, reducing carbon emissions, improving computing speed, and avoiding premature Convergence effect

Pending Publication Date: 2022-04-05
NANJING INST OF TECH
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Problems solved by technology

However, microgrid also has the problems of abandoning wind and light and carbon emission pollution.

Method used

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  • Day-ahead economic dispatching method for micro-grid
  • Day-ahead economic dispatching method for micro-grid
  • Day-ahead economic dispatching method for micro-grid

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Embodiment Construction

[0122] The present invention will be further described below in conjunction with the accompanying drawings.

[0123] The invention discloses a day-ahead economic dispatch method for a microgrid, such as figure 1 shown, including the following steps:

[0124] Step 1: Establish a mathematical model of each power generation unit in the microgrid, including a wind turbine model, a photovoltaic power generation model, a micro gas turbine model, a fuel cell model, and an energy storage battery model.

[0125] The mathematical model of each power generation unit is as follows:

[0126] 1) Wind power generation model

[0127]

[0128] Among them, P WT , are the actual power and rated power of the wind turbine, respectively; v, v in , v r , v out are the actual wind speed, cut-in wind speed, rated wind speed and cut-out wind speed of the wind turbine, in m / s.

[0129] 2) Photovoltaic power generation model

[0130]

[0131] Among them, P PV , are the actual power and...

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Abstract

The invention discloses a micro-grid day-ahead economic dispatching method. The method comprises the following steps: establishing a mathematical model of each power generation unit in a micro-grid; a mathematical model of P2G and CCUS is established, the P2G is an electricity-to-gas conversion device, and the CCUS is a carbon capture, utilization and storage device; determining a micro-grid operation strategy, and establishing an optimization model by taking the minimum daily operation cost of the micro-grid as an objective function and taking the constraint of each output unit and the load power demand constraint as constraint conditions; and solving the optimization model by adopting an improved carnivorous plant optimization algorithm to obtain a micro-grid day-ahead economic dispatching strategy. The improved carnivorous plant optimization algorithm is adopted to solve the objective function, the calculation speed can be increased, the optimal solution can be generated, the optimal scheduling of the distributed power supply in the micro-grid is realized, and the goal of minimum daily operation cost of the micro-grid is achieved.

Description

technical field [0001] The invention belongs to the technical field of microgrid optimization scheduling, and in particular relates to a day-ahead economic scheduling method for microgrids. Background technique [0002] With the increasingly serious problems of environmental pollution and shortage of fossil energy, more and more attention has been paid to new energy power generation. However, new energy power generation represented by wind and solar power generation is greatly affected by the weather, the output power is unstable, and it cannot meet the requirements of load power consumption. It is easy to cause the problem of abandoning the wind and abandoning the light. Microgrid is a small power system composed of distributed power sources, power electronic devices, energy storage, loads, etc. Microgrids can be flexibly configured with distributed power sources, consume new energy power generation nearby, and can also be connected to large power grids through tie lines to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/46H02J3/32G06N3/00G06Q10/06G06Q50/06
CPCY02E10/56Y02E70/30
Inventor 朱正林张冕张欢熊永旭
Owner NANJING INST OF TECH
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