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Test micro-grid construction and control method capable of being used for verifying various micro-grid structures

A control method and micro-grid technology, applied in the field of micro-grid, can solve the problems of limitation, singleness, etc.

Pending Publication Date: 2021-01-05
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its purpose is to provide a micro-grid construction and control method that can simulate and verify various micro-grid structures, and overcome the singleness and limitation of the traditional 10kv voltage line only single busbar structure purpose of the invention

Method used

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  • Test micro-grid construction and control method capable of being used for verifying various micro-grid structures
  • Test micro-grid construction and control method capable of being used for verifying various micro-grid structures
  • Test micro-grid construction and control method capable of being used for verifying various micro-grid structures

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Effect test

Embodiment 1

[0075] The present invention is a test micro-grid construction and control method that can be used for various micro-grid structure verification, such as figure 1 as shown, figure 1 It is a schematic diagram of the double-bus structure of the experimental microgrid of the present invention. The invention has a double-bus structure and a segmented control structure, which can not only simulate experiments, but also supply power to regional loads.

[0076] Among them, the photovoltaic 1 is connected to the variable line impedance 14 through the DC / AC inverter 9, and the other end of the variable line impedance 14 is connected to the grid AC bus 11 and the test AC bus 12 respectively.

[0077] The fan 2 is connected to the variable line impedance 14 through the AC / DC rectifier 10 and the inverter 9, and then connected to the grid AC bus 11 and the test AC bus 12 through the other end of the variable line impedance 14 respectively.

[0078] The load 8 is connected to the grid AC...

Embodiment 2

[0092] The present invention is a test micro-grid control method that can be used for verification of various micro-grid structures. It is divided into two-level optimization. The two-level optimization refers to the optimization of the bottom index by using the economic index, and the optimization of the upper index by the power quality. Make the system run with maximum efficiency.

[0093] The underlying index optimization, such as image 3 as shown, image 3 It is a block diagram of the optimization flow chart of the bottom layer of the experimental microgrid in the present invention. Taking photovoltaics and wind turbines as examples, photovoltaic power generation uses solar energy to convert electricity into electricity, so the capacity of photovoltaic power generation is also changing due to the passage of time. Divide 24 hours a day into six time periods, and every four hours is a time period, then optimize every four hours. Assume that the power emitted by photovolt...

Embodiment 3

[0140] Based on the same inventive concept, an embodiment of the present invention also provides a computer storage medium, on which a computer program is stored. Steps for experimental microgrid control method for grid structure verification.

[0141] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

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Abstract

The invention belongs to the technical field of micro-grids, and particularly relates to a test micro-grid construction and control method capable of being used for verifying various micro-grid structures. The test type micro-grid comprises a double-bus structure and a segmented control structure, and can simulate and verify various micro-grid structures, including the test type micro-grid formedby adopting the double-bus structure and segmented control on a 10kv voltage circuit. And the problems of singleness and limitation of a single bus structure of a traditional 10kv voltage line are solved. The structure of the test-type microgrid can be adjusted for different demonstration engineering projects so as to carry out simulation verification, and an optimal operation scheme is found outby using a two-layer operation optimization method with an economic index as a bottom layer and an electric energy quality index as an upper layer, so that the test-type microgrid always operates in an optimal working state, and the system operation is more reasonable.

Description

technical field [0001] The invention belongs to the technical field of micro-grids, and in particular relates to a test micro-grid construction and control method that can be used for various micro-grid structure verifications. Background technique [0002] With the increasing use of new energy sources, the micro-grid composed of distributed power sources is becoming more and more diverse, and various micro-grid structures are derived. Although the microgrid structure is diverse, the traditional microgrid structure has the disadvantage of singleness. Different areas such as remote mountainous areas, island areas, and urban industrial and commercial parks need to adopt a fixed microgrid structure. This has great obstacles to the construction of microgrids. The capacity of micro-sources and loads in each micro-grid structure is fixed according to the actual demonstration project, so there may not be distributed power sources and loads with specified capacities during the plat...

Claims

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Application Information

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IPC IPC(8): G06F30/25G06N3/00G06Q10/06G06Q50/06H02J3/00H02J3/38
CPCG06F30/25G06N3/006G06Q10/06395G06Q10/06393G06Q50/06H02J3/00H02J3/381H02J2203/20H02J2300/22H02J2300/28G06F2113/04Y04S10/50
Inventor 董鹤楠吴静丁惜灜韩子娇程琨朱钰郝建成孙峰李胜辉金妍程绪可李平唱一鸣张冠锋屈超李明珠白雪金英张钊张稼楠
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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