Micro grid control method

A control method and micro-grid technology, applied in the electric power field, can solve problems such as poor control effect of the micro-grid system, achieve the effect of reducing electricity consumption, reducing load, and increasing economic benefits

Inactive Publication Date: 2012-02-08
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a control method for a micro-grid to solv...

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Embodiment Construction

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0017] figure 1 is a schematic flow diagram of a preferred embodiment of the present invention, such as figure 1 As shown, the present invention provides a microgrid control method, which includes the following steps: when the solar power generation device in the microgrid and the public grid are connected to the grid to supply power to the load, if the power output of the microgrid is not less than the power required by the load , the solar power generation device supplies power to the load alone; if the power of the micro-grid is greater than the set value, the solar power generation device outputs electric energy to the public grid.

[0018] Through the method, not only can the solar energy be fully utilized, but also the user can obtain certain economic benefits by outputting electric energy to the public grid.

[0019] When th...

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Abstract

The invention discloses a micro grid control method, which aims at solving the problem of poor control effect of a micro grid system in the prior art. The micro grid control method comprises the following steps that: when a solar generator in a micro grid and a public grid supply electricity to a load in a grid-connected way, the solar generator singly supplies electricity to the load when the power output of the micro grid is not smaller than the required power of the load, and the solar generator outputs electric energy to the public grid when the power of the micro grid is greater than the set value. The method provided by the invention has the advantages that the solar energy can be utilized to the furthest degree, the electricity consumption cost of users is reduced, in addition, users obtain certain economic benefits in a mode of outputting excessive electric energy to the public grid, the economy and the environment protection are realized, and the electricity consumption requirements can also be met.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for controlling a microgrid. Background technique [0002] With the development of new power generation technologies including wind power, photovoltaic and other renewable energy sources, the distributed generation system DGS (Distributed Generation System) has gradually become a solution to meet the demand of load growth, reduce environmental pollution, improve comprehensive energy utilization efficiency and power supply reliability. an effective way. [0003] In order to integrate the advantages of distributed generation, weaken the impact and negative impact of distributed generation on the grid, and give full play to the benefits and values ​​of DGS, the best way is to form DG units into a micro-grid. [0004] The microgrid is a system composed of multiple DG units and loads. The power supply inside the microgrid is mainly responsible for energy conversion b...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J7/02H02J9/04H02J3/14
CPCY02B10/70Y02B70/30Y02B70/3225Y04S20/222Y04S20/248
Inventor 朱长林郭炬王罡范国平黄宇
Owner STATE GRID CORP OF CHINA
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