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Local power grid system constructed by combining microgrids and power supply control method

A technology of local power grid and power supply control, applied in the field of micro grid, can solve the problems of insufficient power supply of large power grid and insufficient utilization of output power of distributed power supply, and achieve the effect of reducing output power, realizing AC bus of micro grid, and realizing storage.

Pending Publication Date: 2021-02-05
芜湖泰伦特能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to load changes and changes in the output power of distributed power sources, there are still situations where the power supply of large power grids is insufficient or the output power of distributed power sources cannot be fully utilized.

Method used

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  • Local power grid system constructed by combining microgrids and power supply control method
  • Local power grid system constructed by combining microgrids and power supply control method
  • Local power grid system constructed by combining microgrids and power supply control method

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Embodiment Construction

[0033] refer to figure 1 , the present invention proposes a local grid system constructed by combining microgrids, including a plurality of microgrids. Each microgrid is equipped with an energy storage unit, the charging end of the energy storage unit is connected to the distributed power supply in the microgrid, and the discharging end is connected to the AC bus of the microgrid.

[0034] In the charging state of the energy storage unit, it is charged through a distributed power supply. In this way, charging by the energy storage unit can not only reduce the output power of the distributed power supply in the microgrid, but also realize the storage of excess electric energy in the microgrid.

[0035] In the discharge state of the energy storage unit, it is used to supply power to the AC bus of the microgrid. In this way, through the discharge of the energy storage unit, the dual power supply of the AC bus of the microgrid is realized, thereby realizing the improvement of th...

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Abstract

The invention provides a power supply control method for a local power grid constructed by combining micro-grids, and the method is suitable for a local power grid provided with an energy storage unitin each micro-grid, and comprises the following steps of: acquiring load power of each micro-grid in real time, and calculating the sum of the load power to serve as a main grid load; comparing the main network alternating current bus power with a main network load; when the main network alternating current bus power is greater than the main network load, reducing the energy storage units in thedischarging state or increasing the energy storage units in the charging state; and when the main network alternating current bus power is smaller than the main network load, an energy storage unit ina discharge state is added. According to the invention, through arrangement of the energy storage unit, the power adjustment range of the microgrid alternating current bus in the microgrid is more flexible and wider, and the electric energy utilization rate of the distributed power supply is improved.

Description

technical field [0001] The invention relates to the technical field of micro-grids, in particular to a local power grid system and a power supply control method constructed in conjunction with micro-grids. Background technique [0002] In the existing micro-grid power supply system, the distributed power supply can only be called through the grid-connected micro-grid. However, due to changes in load and changes in the output power of distributed power sources, there are still situations where the power supply of large power grids is insufficient or the output power of distributed power sources cannot be fully utilized. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a local power grid system and a power supply control method constructed in conjunction with microgrids. [0004] The present invention proposes a local grid system constructed by combining microgrids, including: a pluralit...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/28H02J3/32H02J3/12
CPCH02J3/381H02J3/28H02J3/32H02J3/12
Inventor 王明君
Owner 芜湖泰伦特能源科技有限公司
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