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Loop-based microgrid topology planning method

A technology of loop topology and micro-grid, applied in electrical digital data processing, instrumentation, geometric CAD, etc., can solve difficult-to-implement problems

Active Publication Date: 2020-03-27
YANSHAN UNIV
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Problems solved by technology

[0003] With the gradual increase in the demand for distributed energy, especially distributed renewable energy, in energy consumption, the traditional radial distribution network may not be the best choice for realizing the unique functions and characteristics of the microgrid. Microgrid topology planning needs to be considered Islanding operation and self-healing capabilities in a single microgrid loop, and addressing energy balance issues when planning the ring grid, which presents greater challenges using existing methods
In addition, considering various distributed generation and energy storage facilities in microgrid topology planning makes it difficult to implement traditional planning methods based on mixed integer programming

Method used

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Embodiment Construction

[0096] Combine below Figure 1-8 And embodiment the present invention is described in further detail:

[0097] A loop-based microgrid topology planning method, comprising the following steps:

[0098] Step 1, apply graph theory algorithm to microgrid topology planning;

[0099] Step 2, constructing a mathematical model of the loop-based microgrid topology;

[0100] Step 3, in order to solve the loop topology of the microgrid, design a solution algorithm for the loop topology;

[0101] Step 4, design experiments for the proposed planning method, and use MATLAB programming to simulate and analyze the planning method.

[0102] In step 1, graph theory has important theoretical value and extensive application background in modern science and technology, such as optimization methods in computer science, information science, network design, industrial production and enterprise management, which widely use graph theory algorithms. Graph theory is a new branch of mathematics that h...

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Abstract

The invention discloses a loop-based microgrid topology planning method, which belongs to the field of microgrid topology structure planning, and comprises the following steps of: (1) applying a graphtheory algorithm to microgrid topology planning; (2) constructing mathematical models of three stages of a loop-based microgrid topological structure graph theory algorithm and an integer linear programming stage; (3) giving a solving strategy of the mathematical models; and (4) determining an example and necessary characteristics, and carrying out simulation analysis on the example by adopting matlab / simulink software. According to the method, the graph theory algorithm is introduced to plan the topological structure of the microgrid, and the load grades are divided according to the load importance, so that the important load in each loop has enough electric energy to supply power when the power system is powered off due to reasons, and the power supply reliability and safety of the loadare improved.

Description

technical field [0001] The invention relates to the technical field of micro-grid topology planning, in particular to a loop-based micro-grid topology planning method. Background technique [0002] As the scale of power grid construction continues to expand, the defects of ultra-large-scale power systems are gradually emerging. In addition, the contradiction between global resources and environmental issues has become more serious. In order to solve the problem of energy shortage in a timely manner, relevant personnel have paid more attention to regeneration and cleaning. Research and development of new energy. Due to its own advantages, distributed power generation is an effective way to solve energy crisis and environmental problems, but the grid connection of distributed power generation will bring impacts that cannot be ignored to the power system. In order to alleviate the impact of large-scale distributed power single-unit grid connection on the large power grid, the ...

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Application Information

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IPC IPC(8): G06F30/20G06F30/18G06F113/04G06F111/10
Inventor 殷桂梁李云磊陈建华
Owner YANSHAN UNIV
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