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Capacity optimization configuration method of grid-connected wind and light storage micro-grid

A capacity optimization configuration and micro-grid technology, applied in photovoltaic power generation, circuit devices, AC network circuits, etc., can solve problems such as randomness and volatility, and the impact of power system operation stability, so as to increase computing speed and improve effectiveness Effect

Pending Publication Date: 2022-05-06
STATE GRID HENAN ELECTRIC POWER COMPANY ANYANG POWER SUPPLY +1
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AI Technical Summary

Problems solved by technology

However, distributed energy is greatly affected by the environment and seasons, and has randomness and volatility. After being connected to the grid, it will affect the stability of the power system operation.

Method used

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  • Capacity optimization configuration method of grid-connected wind and light storage micro-grid
  • Capacity optimization configuration method of grid-connected wind and light storage micro-grid
  • Capacity optimization configuration method of grid-connected wind and light storage micro-grid

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Embodiment Construction

[0102] The capacity optimization configuration method of the grid-connected wind-solar-storage microgrid is characterized in that: the wind-solar-storage microgrid is mainly composed of wind turbines, photovoltaic arrays, energy storage devices and a central controller, and the energy storage device is currently widely used lithium iron phosphate Batteries, wind-solar-storage microgrids are connected to the power system through public access points, such as figure 1 as shown,

[0103] Fan model:

[0104] The output power of the wind turbine is related to the wind speed, and the wind speed basically obeys the Wellbull distribution, and the expression is:

[0105]

[0106] In the formula, v represents the real-time wind speed; k and c are the shape and scale parameters respectively;

[0107] Then the output model of the wind turbine can be expressed as:

[0108]

[0109] In the formula, v ci is the cut-in wind speed; v co is the cut-out wind speed; v r is the rated w...

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Abstract

The invention discloses a capacity optimization configuration method for a grid-connected wind-solar-storage micro-grid, and the method comprises the steps: selecting a lithium iron phosphate battery as an energy storage device, constructing an output model of a wind / solar / storage micro-grid, and then taking the minimum system annual equivalent cost, the minimum system annual total carbon emission and the minimum system outsourcing electricity proportion as optimization targets, according to the method, a multi-objective optimization model of the grid-connected wind / photovoltaic / storage micro-grid capacity is established, an FPA-LHS algorithm is improved for the multi-objective optimization model, an optimal configuration scheme of the micro-grid capacity is obtained by applying the improved algorithm, and finally, the effectiveness of the improved algorithm is verified through comparison with a calculation result of the FPA-LHS algorithm. The method has the advantages that the adaptive factor is introduced, so that the calculation speed of the improved FPA-LHS algorithm is improved on the basis of ensuring the optimization capacity.

Description

technical field [0001] The invention relates to the technical field of power grids, more specifically to the technical field of grid-connected power grids. Background technique [0002] Distributed power generation has the advantages of flexible application and abundant resources, and it is gradually playing an important role in the field of energy supply in my country. However, distributed energy is greatly affected by the environment and seasons, and has randomness and volatility. After being connected to the grid, it will affect the stability of the power system operation. Therefore, microgrid technology has been vigorously developed. The microgrid is composed of distributed power sources, loads, and energy storage devices. By optimizing the capacity of the microgrid, the reliability of the power grid can be improved. Contents of the invention [0003] The purpose of the present invention is to provide a capacity optimization configuration method of grid-connected win...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/28H02J3/46H02J3/48
CPCH02J3/381H02J3/28H02J3/46H02J3/48H02J2300/28H02J2300/22Y02E10/56Y02E70/30
Inventor 王波郭志红张占营张霄席晟哲胡明迪马恒瑞
Owner STATE GRID HENAN ELECTRIC POWER COMPANY ANYANG POWER SUPPLY
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