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Distributed control method for general microgrid group including constant power and droop control

A technology of constant power control and distributed control, which is applied to AC networks with the same frequency from different sources, general control systems, control/regulation systems, etc.

Active Publication Date: 2018-04-24
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pinning control is an effective distributed control method for multi-agent systems. By pinning some nodes, pinning control can reduce the number of controllers in a large and complex control system. Usually, this system is difficult to achieve by adding controllers to all nodes.

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  • Distributed control method for general microgrid group including constant power and droop control
  • Distributed control method for general microgrid group including constant power and droop control
  • Distributed control method for general microgrid group including constant power and droop control

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Embodiment Construction

[0055] 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.

[0056] In the embodiment of the present invention, the microgrid group includes m droop-controlled distributed power clusters and n constant power controlled distributed power clusters; the control of distributed power sources in the microgrid group and the mutual information interaction are controlled by multiple The agent system is responsible, each distributed power source corresponds to an agent, and the number of the distributed power source is the same as the number of the agent corresponding to the distributed power source; among them, some agents are controlled pinni...

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Abstract

The invention discloses a general distributed control method for multi-microgrids with both PQ controlled and droop controlled distributed generators, which comprises the following steps of: step 10) conducting primary control to maintain the power balance of the multi-microgrids; step 20) determining predefined group consensus values of pinned agents; step 30) seeking group consensus among other agents and the pinned agents through communication coupling; and step 40) adjusting output powers to complete secondary control. Based on pinning control, the control method which adopts hierarchical control is a distributed control method for distributed power supply clusters with two control modes comprising PQ control and droop control. The method obviates the requirements for a central controller and complex communication topologies, reduces the number of the controllers, can be adapted to the communication topology changes in the multi-microgrids, and meets the plug-and-play requirement for the distributed power supply.

Description

technical field [0001] The invention belongs to the field of micro-grid operation control, and in particular relates to a general-purpose micro-grid group distributed control method including constant power and droop control. Background technique [0002] With the increasingly severe environmental and energy problems, distributed generation technology using renewable energy has been widely used in power systems. A microgrid is an energy system that includes distributed power generation devices, energy storage devices and local loads, and has certain self-regulation and control capabilities. The microgrid group is an effective way to solve the problems caused by the high-density access of distributed power, and will play an important role in the future smart distribution network. [0003] Stability and optimal control of microgrid clusters have recently received special attention. Control strategies based on multi-agent systems are recognized to play an important role in ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J3/381H02J2310/10G05B17/02
Inventor 曹戈顾伟柳伟楼冠男陈明
Owner SOUTHEAST UNIV
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