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Microgrid Distributed Communication Topology Design Method Based on Network Mirroring and Global Propagation Rate

A technology of distributed communication and network mirroring, which is applied in the field of microgrid distributed communication topology design based on network mirroring and global propagation rate, can solve problems such as unsatisfactory reactive power distribution effect and voltage steady-state deviation, and achieve optimal design process, improve voltage quality, and expand the effect of application range

Active Publication Date: 2021-11-12
SOUTHEAST UNIV
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Problems solved by technology

However, since the droop control is proportional difference control, it will cause voltage steady-state deviation, and the effect of reactive power distribution is not ideal. Therefore, it is necessary to adopt secondary cooperative control to assist voltage recovery and reactive power sharing. It is an effective way to realize cooperative control

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  • Microgrid Distributed Communication Topology Design Method Based on Network Mirroring and Global Propagation Rate
  • Microgrid Distributed Communication Topology Design Method Based on Network Mirroring and Global Propagation Rate
  • Microgrid Distributed Communication Topology Design Method Based on Network Mirroring and Global Propagation Rate

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Embodiment Construction

[0068] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0069] The present invention designs a micro-grid distributed communication topology design method based on network mirroring and global transmission rate, which is used to realize the control of information interaction in the drooping operation mode of the island micro-grid. In practical applications, such as figure 1 As shown, it specifically includes the following steps:

[0070] Step A. Determine the connectivity of all distributed directional communication networks in the microgrid, select a connected directional communication network as a candidate communication network, and then enter step B.

[0071] In the above step A, among all the distributed directed communication networks of the microgrid, the connected distributed directed communication network is selected as the candidate communication network of the micr...

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Abstract

The present invention relates to a microgrid distributed communication topology design method based on network mirroring and global propagation rate. Firstly, the communication connectivity of the distributed directional network of the microgrid is judged; then, for the connected directional communication network, its Mirror network, and select the optimal distributed directed communication topology corresponding to the maximum performance index based on the algebraic connectivity and communication cost; for the optimized distributed communication topology, based on the global propagation rate and out-degree, obtain the corresponding Pinning the distributed power set; finally, based on the optimal distributed communication network and pinning points of the microgrid, a distributed secondary voltage control of the microgrid is established to realize reactive power sharing and average voltage recovery. This design method is based on graph theory, with the control objectives of algebraic connectivity, node out-degree and global propagation rate, providing a basis for the control structure design of distributed secondary control, realizing reactive power sharing and average voltage recovery, and improving Dynamic performance of microgrids.

Description

technical field [0001] The invention relates to the technical field of micro-grid operation control, in particular to a micro-grid distributed communication topology design method based on network mirroring and global propagation rate. Background technique [0002] With the depletion of the earth's resources and people's attention to environmental issues, the access to renewable energy has attracted more and more attention from all over the world. Microgrid is an emerging energy transmission mode that increases the penetration rate of renewable energy and distributed energy in the energy supply system, and its components include different types of distributed energy resources (DER, including micro gas turbines, wind turbines, Photovoltaic, fuel cells, energy storage equipment, etc.), user terminals of various electrical loads and / or thermal loads, and related monitoring and protection devices. [0003] The power supply inside the microgrid is mainly responsible for energy c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L29/08H02J3/38
CPCH04L67/1095H04L41/042H04L41/0823H04L41/12H02J3/381H02J3/388H02J3/46H02J13/00002Y02E40/70Y02E60/00Y02P80/14Y04S10/12Y04S10/30Y04S40/126H02J13/00022H04L41/145
Inventor 楼冠男洪吟秋顾伟盛丽娜杨权
Owner SOUTHEAST UNIV
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