Slide control method for power fluctuation of microgrid interconnection line

A tie-line power and smooth control technology, applied in the direction of single-net parallel feeding arrangement, etc., can solve the problems of high cost and high construction cost of micro-grid, and achieve the effect of reducing construction cost

Active Publication Date: 2012-07-18
南京首风智慧电力研究院有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the system for storing electrical energy is generally more expensive, which will lead to higher construction costs of the microgrid

Method used

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  • Slide control method for power fluctuation of microgrid interconnection line
  • Slide control method for power fluctuation of microgrid interconnection line
  • Slide control method for power fluctuation of microgrid interconnection line

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] In order to reduce the construction cost of the microgrid, an embodiment of the present invention provides a method for smoothing the power fluctuation of the tie line of the microgrid, see figure 1 , see the description below:

[0027] 101: Obtain the power curve of the temperature-controlled household equipment and the load curve of the uncontrollable household equipment;

[0028] Wherein, this step is specifically: before the start of each working day, use the power curve of the temperature-controlled household equipment and the load curve of the uncontrollable household equipment on similar days in history to obtain the power curve of the temperature-controlled household equipment and the load curve of the uncontrollable hou...

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Abstract

The invention discloses a slide control method for the power fluctuation of a microgrid interconnection line. The slide control method comprises the steps of: structuring a power generation plan based on the output of the microgrid interconnection line according to the permeation rate of renewable energy sources, the power curve of temperature-controlled household equipment and the load curve of uncontrollable household equipment; acquiring the power of the renewable energy sources, the load and indoor temperature of non-response type household equipment, and the on-off state and rated power of the temperature-controlled household equipment in real time, working out a target value of aggregated load control response of the temperature-controlled household equipment and establishing a functional relation reflecting the state between the controllable variable of the operation state of a microgrid system and the temperature-controlled household equipment according to the power generation plane based on the output of the microgrid interconnection line, and acquiring the on-off state sequence control signal of the temperature-controlled household equipment for a next step; issuing an on-off state control instruction of the temperature-controlled household equipment by means of the on-off state sequence control signal; and acquiring the actual value of the aggregated load response of the temperature-controlled household equipment based on an equivalent thermodynamics parameter model of the temperature-controlled household equipment, thereby reducing the construction cost of a microgrid.

Description

technical field [0001] The invention relates to the field of microgrid systems for distributed power generation in electric power systems, and in particular to a method for smoothing power fluctuations of tie lines of microgrids. Background technique [0002] Microgrid refers to a microgrid formed by organizing scattered small power generation units (distributed power sources), energy storage devices, and local loads in a certain area. There may be renewable energy sources (such as wind power and photovoltaics) in the microgrid, and the output of these power sources has the characteristics of intermittent, random and uncertain. It is a current hot research issue to effectively overcome the power fluctuation between the microgrid and the conventional distribution network tie line caused by the renewable energy generation system in the microgrid, and then reduce the impact of the microgrid on the distribution system. The fluctuation characteristics of the output of renewable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46
Inventor 王成山刘梦璇
Owner 南京首风智慧电力研究院有限公司
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