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Design method for photovoltaic microgrid supply-demand control system containing distributed energy sources

A distributed energy and photovoltaic power generation system technology, applied in photovoltaic power generation, single-grid parallel feeding arrangement, etc., can solve problems such as large weather influence and power output fluctuation, achieve high flexibility, ensure consistency, and achieve supply and demand The effect of stability

Active Publication Date: 2014-10-15
浙江亿能聚建设有限公司
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Problems solved by technology

Photovoltaic power generation and wind power generation in renewable energy are greatly affected by the weather, and the fluctuation of their power output has certain limitations in practical application

Method used

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  • Design method for photovoltaic microgrid supply-demand control system containing distributed energy sources
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  • Design method for photovoltaic microgrid supply-demand control system containing distributed energy sources

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Embodiment Construction

[0066] The specific implementation of the present invention is specifically described for a photovoltaic microgrid system containing multiple distributed energy sources composed of photovoltaic power generation, synchronous units, energy storage systems, and supercapacitor systems. The considered microgrid equipment configuration and its structure are as follows: figure 1 As shown, the photovoltaic microgrid supply and demand control system is as follows: figure 2 shown. The specific implementation steps are as follows.

[0067] Step 1: Microgrid data detection and acquisition:

[0068] (1) Obtain and store the meteorological information of the area where the photovoltaic microgrid is located in the monitoring system through the meteorological instrument, which is used for the supply and demand system: temperature, radiation, relative humidity, wind speed, average temperature, weather type, sunrise and sunset time.

[0069] (2) Obtain the weather information of the day thr...

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Abstract

The invention discloses a design method for a photovoltaic microgrid supply-demand control system containing distributed energy sources, aiming at improving system stability, scheduling response capability and economy. A 24-hour operation plan of a photovoltaic microgrid is calculated by predicting photovoltaic and local load power values and after fully considering the running cost of distributed power supplies, during running, the operation plan is revised in real time by the supply-demand system according to the latest photovoltaic and load prediction results, finally, the operation plan and grid-connected point power serves as input of the control system, and the output power of each distributed power supply is controlled. By the design method, the operation plan can be adjusted in real time, supply-demand stability in the system and response to high grid are effectively guaranteed, and meanwhile, maximum running benefit of the photovoltaic microgrid is achieved

Description

technical field [0001] The invention relates to the technical field of new energy electric power and micro grid. In particular, it relates to a design method for a photovoltaic microgrid supply and demand control system including multiple distributed energy sources. Background technique [0002] At the end of 2012, the increment of wind power generation in my country exceeded that of coal and charcoal, and the total amount of power generation surpassed that of nuclear energy for the first time. Against the backdrop of a slowdown in global electricity generation, the share of renewable energy in total global electricity generation rose to 4.7%. China overtook Germany in 2012 to become the second-largest renewable energy generator behind the United States. Among renewable energy sources, photovoltaic power generation and wind power generation are greatly affected by the weather, and the fluctuation of their power output has certain limitations in practical application. In o...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCY02E10/56
Inventor 刘士荣郑凌蔚吴舜裕竺健
Owner 浙江亿能聚建设有限公司
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