An optimal coordinated operation control method for multi-microgrid based on double-layer directed graph
A technology of operation control and coordinated control, applied to AC networks with the same frequency from different sources, AC network voltage adjustment, single-network parallel feeding arrangement, etc. Increase the computing tasks of the controller and other issues to achieve the effect of meeting the needs of independence and individuality and operating reasonably
Active Publication Date: 2022-07-15
NANJING UNIV OF POSTS & TELECOMM
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However, in the existing multi-microgrid distributed control strategies, when the power of a certain node in the system changes, all nodes will participate in the adjustment under the action of the consensus protocol, which will increase the computing tasks of the controller, and Cannot take into account the independence and individual needs of the sub-microgrid
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[0090] In order to make the content of the present invention easier to understand clearly, the present invention will be described in further detail below according to specific embodiments and in conjunction with the accompanying drawings.
[0091] In the embodiment of the present invention, the multi-microgrid system includes M microgrid MG, the first k individual piconet MG k Include m k A distributed power supply DG, k ∈ N MG ={1, ... , M }; k individual piconet MG k in the i A distributed power source DG is denoted as DG k,i , ; The control of the distributed power DG in the multi-microgrid and the mutual information exchange are realized through the multi-agent system.
[0092] A multi-microgrid optimization and coordinated operation control method based on a double-layer directed graph according to the present invention includes the following steps:
[0093] Step 1. Establish a multi-microgrid system optimization coordination control structure, and establis...
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The invention discloses a multi-microgrid optimal coordinated operation control method based on a double-layer directed graph. The method first establishes a multi-microgrid optimized coordinated operation control structure, and establishes a corresponding relationship between the multi-microgrid system and the double-layered directed graph; Then, the communication network between the agents is represented by a two-layer directed graph; finally, a distributed control strategy is designed according to the communication network represented by the two-layer directed graph. The secondary control of the output voltage and frequency of the type power supply and the power sharing; the upper-level control is used to adjust the power mutual aid between the grids, so that the operation of the multi-microgrid system in different situations is more reasonable. The invention not only comprehensively considers the voltage and frequency stability of each sub-microgrid and the power interaction between the grids, but also satisfies the independence and individualized requirements of each sub-microgrid operation by dividing the operating conditions of multiple microgrids.
Description
technical field [0001] The invention relates to the field of multi-microgrid optimization and coordination control, in particular to a multi-microgrid optimization and coordination operation control method based on a double-layer directed graph. Background technique [0002] Clean and low-carbon electricity in the context of carbon neutrality will accelerate the development of the traditional power system to a new type of power system dominated by renewable energy. The technology that uses these renewable energy sources and local fossil fuels for power generation and energy supply is called distributed energy. Power generation, the distributed power generation technology is currently widely used, and a large number of distributed power sources DG will be connected in the new power system. Traditional power systems rely on a centralized power dispatching architecture to manage power. Because distributed generation is geographically dispersed, the access of large-scale distrib...
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IPC IPC(8): H02J3/38H02J3/48H02J3/50H02J3/24H02J3/16H02J3/06H02J13/00
CPCH02J3/381H02J3/388H02J3/472H02J3/48H02J3/50H02J3/241H02J3/16H02J3/06H02J13/00H02J2203/20H02J2300/20Y02E40/70
Inventor 张腾飞程奕凌刘明祥刘建蔡月明岳东窦春霞吴巨爱徐俊俊杨杨邹花蕾朱三立
Owner NANJING UNIV OF POSTS & TELECOMM