Multi-energy complementary microgrid hierarchical control and operation optimization method

A technology of operation optimization and layered control, applied in the direction of single network parallel feeding arrangement, AC network circuit, AC network load balancing, etc., can solve problems such as power imbalance, no consideration of power quality, and difficulty in guaranteeing power quality

Pending Publication Date: 2020-10-09
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

On the one hand, as an extension of the micro-grid, the multi-energy complementary micro-grid inherits the advantages of the micro-grid such as flexible operation and local consumption, but also leaves behind the frequent occurrence of power unbalance caused by the intermittence of micro-source output and load fluctuations. , The problem that the power quality is difficult to guarantee
On the other hand, the multi-energy complementary microgrid interacts with multiple energy sources, making its control strategy more complex than traditional microgrids.
According to the operation requirements and real-time requirements of the multi-energy complementary micro-grid, it is necessary to propose a multi-energy complementary micro-grid for the micro-source power distribution, micro-source output prediction planning, operation and optimization control without considering the power quality when the load fluctuates. The overall planning of the operation mode and the power quality optimization control scheme

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  • Multi-energy complementary microgrid hierarchical control and operation optimization method
  • Multi-energy complementary microgrid hierarchical control and operation optimization method
  • Multi-energy complementary microgrid hierarchical control and operation optimization method

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Embodiment Construction

[0080] A hierarchical control system based on a multi-energy complementary micro-grid. The system includes three buses, namely an electric bus, a hot bus and a cold bus. The electric energy input devices included in the electric bus include photovoltaic generators, wind power generators, gas turbines, The battery and the large power grid that can be selected exist. When the power of the electric bus is unbalanced, the battery and the large power grid are mainly used to exchange electric energy to achieve the purpose of peak shaving and valley filling;

[0081] The heat energy input devices included in the thermal bus include waste heat boilers and electric heating equipment that use waste heat generated by gas turbines;

[0082] The cold energy input devices included in the cold bus include electric refrigeration equipment and lithium bromide refrigerators (one of the absorption refrigerators shown in the figure);

[0083] The main energy output channels of the three energy bu...

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Abstract

The present invention provides a multi-energy complementary microgrid hierarchical control and operation optimization method. The system comprises three buses, namely an electric bus, a hot bus and acold bus, and an electric energy input device included in the electric bus comprises a photovoltaic generator, a wind driven generator, a gas turbine, a storage battery and a large power grid; throughthe implementation of the invention, the optimization of hierarchical control and operation of the multi-energy complementary microgrid is realized, the energy utilization rate of the system is improved on the premise of realizing power optimization, and the problem of electric energy quality during micro-source operation and optimization control is well solved.

Description

technical field [0001] The invention discloses a layered control and operation optimization method based on a multi-energy complementary microgrid, which mainly relates to a multi-energy complementary microgrid, layered control and droop control. Background technique [0002] With the transformation of the national energy structure, the role of multi-energy complementary microgrids with high energy utilization and high clean energy penetration is becoming more and more obvious. On the one hand, as an extension of the micro-grid, the multi-energy complementary micro-grid inherits the advantages of the micro-grid such as flexible operation and local consumption, but also leaves behind the frequent occurrence of power unbalance caused by the intermittence of micro-source output and load fluctuations. , The problem that the power quality is difficult to guarantee. On the other hand, the multi-energy complementary microgrid interacts with multiple energy sources, making its cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46H02J3/32H02J3/38
CPCH02J3/32H02J3/381H02J3/466H02J2203/20H02J2300/24H02J2300/28H02J2300/40Y02E10/56
Inventor 丁惜瀛李闯韩翔宇姚润宇翟晓寒贾广东蓝天翔毕明涛孟令卓超岳琦李晓东韩妍程锟宫晶赢
Owner SHENYANG POLYTECHNIC UNIV
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