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Microgrid grid-connected regulation method

A regulation method and microgrid technology, applied in the field of microgrid, can solve the problems of high voltage, large impact of microgrid grid connection, and no good treatment method, and achieve the effect of increasing voltage, realizing utilization rate, and realizing step-down regulation.

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

Problems solved by technology

However, when the microgrid bus voltage is too high, there is still no good solution
However, if the microgrid bus voltage is too high, it will have a greater impact on the grid connection of the microgrid.

Method used

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  • Microgrid grid-connected regulation method

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Embodiment Construction

[0030] refer to figure 1 , a microgrid grid-connected regulation method proposed by the present invention includes the following steps.

[0031] S1. Set up a voltage divider module between the microgrid power supply and the microgrid AC busbar. The voltage divider module includes a microgrid switch and a voltage divider resistor connected in parallel with the microgrid switch and whose resistance value can be adjusted. The microgrid switch is connected to the microgrid power supply and the microgrid switch respectively. Microgrid AC busbar.

[0032] In this way, in this embodiment, when the microgrid power supplies power to the microgrid AC busbar through the microgrid switch, the maximum power supply utilization rate of the microgrid power supply can be realized; when the microgrid power supply supplies power to the microgrid AC busbar through the voltage dividing resistor, through the The piezoresistive voltage division can effectively reduce the voltage of the AC bus of th...

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Abstract

The invention provides a microgrid grid-connected regulation method, which comprises the steps that a voltage division module is arranged between a microgrid power supply and a microgrid alternating current bus, the voltage division module comprises a microgrid switch and a voltage division resistor which is connected with the microgrid switch in parallel and has an adjustable resistance value, and the microgrid switch is respectively connected with the microgrid power supply and the microgrid alternating current bus; an energy storage module is arranged, the charging end of the energy storagemodule is connected with the microgrid power supply, and the discharging end is connected with the microgrid alternating-current bus; during grid-connected adjustment, the working states of the voltage division module and the energy storage module are adjusted according to a difference value between the main grid alternating-current bus voltage and the micro-grid alternating-current bus voltage until the main grid alternating-current bus voltage is consistent with the micro-grid alternating-current bus voltage, and the grid-connected point switch is closed. According to the invention, the voltage regulation range of the microgrid alternating-current bus is expanded, and the voltage regulation of the microgrid alternating-current bus is ensured to be flexible and reliable. Before grid connection, the voltage of the microgrid alternating-current bus is consistent with that of the main grid alternating-current bus, so that the voltage disturbance on the main grid alternating-current busduring grid connection is reduced.

Description

technical field [0001] The invention relates to the technical field of micro-grids, in particular to a grid-connected adjustment method for micro-grids. Background technique [0002] At present, in microgrid regulation, in order to improve the utilization efficiency of distributed power sources, most microgrids are equipped with energy storage batteries, so that when the bus voltage of the microgrid is too low, the microgrid bus can be boosted by discharging the energy storage battery. However, there is still no good way to deal with the high bus voltage of the microgrid. However, if the bus voltage of the microgrid is too high, it will have a greater impact on the grid connection of the microgrid. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a microgrid grid-connected regulation method. [0004] A microgrid grid-connected adjustment method proposed by the present invention compri...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/28H02J3/12
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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