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Finite time consistency-based distributed cooperative control method for DC micro-grid

A DC micro-grid, limited time technology, applied in parallel operation of DC power supplies, DC network circuit devices, electrical components, etc., can solve problems such as increased consistency convergence time, communication topology affecting convergence performance, etc.

Active Publication Date: 2016-11-16
SOUTHEAST UNIV
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  • Claims
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Problems solved by technology

As the scale of the multi-agent system increases, the consensus convergence time will increase greatly, and the uncertainty of the communication topology will also affect its convergence performance.

Method used

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  • Finite time consistency-based distributed cooperative control method for DC micro-grid
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  • Finite time consistency-based distributed cooperative control method for DC micro-grid

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be described in detail below in combination with the accompanying drawings and implementation examples. It should be understood that the specific implementation cases described here are only used to explain the present invention, and are not intended to limit the invention.

[0046] In the embodiment of the present invention, the DC microgrid is a multi-agent system including n distributed power agents. During the control process, the distributed power agents perform local information collection and global information interaction, and each distributed power agent detects its own output Current, and only communicate with its adjacent distributed generation agent, and realize the distributed cooperative control of distributed generation through the finite time consistency control method. like figure 1 As shown, the DC microgrid distributed cooper...

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Abstract

The invention discloses a finite time consistency-based distributed cooperative control method for a DC micro-grid. The method comprises the steps of (10) carrying out primary control, automatically maintaining power balance of a DC micro-grid system; and (20) carrying out secondary control, achieving voltage regulation and load power distribution. The control method is a distributed control method; the requirements of a central controller and a complicated communication topology are removed; a multi-agent system is controlled through finite time; current proportion distribution is achieved in a distributed manner; meanwhile, average output current of a distributed power supply is obtained; and cooperative regulation of the voltage of the DC micro-grid and proportional distribution of the load power can be quickly and accurately achieved.

Description

technical field [0001] The invention belongs to the field of micro-grid operation control, and specifically relates to a distributed collaborative control method for DC micro-grids based on finite time consistency. Background technique [0002] Due to the increasingly prominent environmental problems and the increase in energy demand, distributed energy has been developed rapidly. As a way to solve the problem of distributed energy accessing the grid, microgrids have a large number of DC distributed power sources such as photovoltaics, fuel cells, and energy storage devices. At the same time, more and more DC loads (such as electric vehicles, LED loads, etc.) began to be connected to the distribution network, and DC microgrids began to attract people's attention. Compared with the AC microgrid, the DC microgrid reduces the commutation link between AC and DC, reduces the loss of power conversion, and can avoid harmonic influence, no synchronization, reactive power compensati...

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Application Information

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IPC IPC(8): H02J1/10
CPCH02J1/102H02J1/106
Inventor 顾伟曹戈薛帅柳伟陈明楼冠男洪灏灏
Owner SOUTHEAST UNIV
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