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Power control method and device for isolated microgrid

A power control and micro-grid technology, applied in the direction of reducing/preventing power oscillation, AC network load balancing, single-network parallel feeding arrangement, etc., can solve the problems of inability to balance energy, optimize scheduling, and inability to coordinate the relationship between supply and demand of photovoltaic power generation energy, etc. problems, to achieve the effect of high-quality power supply and heating services and optimized scheduling

Active Publication Date: 2020-02-07
NR ELECTRIC CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] With the continuous advancement of the reform of the power industry, isolated microgrids are gradually developing towards a complex structure, large capacity, and diversified trends. According to the existing real-time power control method of the isolated microgrid, all the energy of the isolated microgrid cannot be balanced and optimally dispatched, and thus it is impossible to coordinate photovoltaic power generation, wind power generation, Energy supply and demand relationship between energy storage battery and heat storage boiler

Method used

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  • Power control method and device for isolated microgrid
  • Power control method and device for isolated microgrid
  • Power control method and device for isolated microgrid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a schematic flowchart of a power control method for an isolated microgrid provided by an embodiment of the present application, such as figure 1 Said, the method includes the following steps:

[0057] S101: Determine the operating state of an energy storage device in the isolated microgrid; the energy storage device includes an energy storage battery and / or a thermal storage boiler;

[0058] Optionally, prior to this step, day-ahead optimal scheduling may be performed on the isolated microgrid. Here, the day-ahead optimal scheduling refers to a method for determining short-term power data in the isolated microgrid. Specifically, the short-term power data of the isolated microgrid may be and short-term load data to predict, and then determine the optimal dispatch power data of the isolated microgrid through the day-ahead optimal scheduling algorithm. Exemplarily, the short-term output power data of the power generation device in the isolated microgrid can...

Embodiment 2

[0110] In order to better reflect the purpose of the present application, further illustrations are made on the basis of Embodiment 1 of the present application.

[0111] In an actual application scenario, Table (2) can be used to illustrate the specific real-time power control strategy of the isolated microgrid under different operating scenarios:

[0112]

[0113]

[0114]

[0115]

[0116] Table 2)

[0117] Among them, SPeed wind_10min Indicates the average wind speed within 10 minutes.

Embodiment 3

[0119] Regarding the power control method for an isolated microgrid in Embodiment 1 of the present application, Embodiment 3 of the present application further provides a power control device for an isolated microgrid.

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Abstract

The embodiment of the invention discloses a power control method and device for an isolated microgrid. The method comprises steps: an operation state of an energy storage device in the isolated microgrid is determined, wherein the energy storage device comprises an energy storage battery and / or a heat storage boiler; and the power of the isolated microgrid is adjusted according to the operation state of the energy storage device, wherein the power of the isolated microgrid comprises the power of the energy storage device. Thus, in the process of carrying out real-time power control on the isolated microgrid comprising the energy storage battery and / or the heat storage boiler, the operation state of the energy storage battery and / or the heat storage boiler is fully considered, then energy in the isolated microgrid can be balanced and optimally dispatched, and high-quality power supply and heating services are provided.

Description

technical field [0001] The present application relates to the field of power system automation, in particular to a power control method and device for an isolated microgrid. Background technique [0002] Microgrid refers to a power network composed of multiple distributed power sources and related loads according to a certain topology. It is connected to the conventional power grid through switches. Microgrid can realize large-scale access of distributed power sources and renewable energy. In this way, the isolated microgrid refers to a microgrid that can be constructed and operated independently and is not associated with the conventional power grid. [0003] With the continuous advancement of the reform of the power industry, isolated microgrids are gradually developing towards a complex structure, large capacity, and diversified trends. According to the existing real-time power control method of the isolated microgrid, all the energy of the isolated microgrid cannot be b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/46H02J3/28
CPCH02J3/24H02J3/46H02J3/28
Inventor 郝飞金朝意施烨陈根军顾全姜彬庄怀东
Owner NR ELECTRIC CO LTD
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