A grid-connected microgrid day-ahead multi-objective optimization method considering the influence of an energy storage system

A multi-objective optimization and energy storage system technology, which is applied in the field of multi-objective optimization of grid-connected microgrids, can solve single operating costs, ignore environmental benefits, and do not consider the specific conditions of energy storage systems for optimal operation of grid-connected microgrids. impact and other issues, to achieve the effect of reducing operating costs and alleviating environmental pollution problems

Inactive Publication Date: 2019-06-04
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

[0004] (1) The specific impact of the energy storage system on the optimal operation of the grid-connected microgrid is not considered
[0005] (2) Does not consider the impact of the uncertainty of renewable energy output
[0006] (3) Only a single operating cost minimization model is considered, ignoring the indicator of environmental benefits, but the main reason for the generation of microgrids is to solve environmental problems

Method used

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  • A grid-connected microgrid day-ahead multi-objective optimization method considering the influence of an energy storage system
  • A grid-connected microgrid day-ahead multi-objective optimization method considering the influence of an energy storage system
  • A grid-connected microgrid day-ahead multi-objective optimization method considering the influence of an energy storage system

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Embodiment

[0057] Such as figure 1 As shown, the present invention provides a multi-objective random optimization operation method for grid-connected microgrids considering the impact of energy storage systems, including the following steps:

[0058] S1 According to the wind speed, light intensity and temperature forecast value in the next 24 hours, establish a microgrid optimization model that considers the energy storage system and does not consider the energy storage system;

[0059] S2 converts the multi-objective optimization problem into a single-objective optimization problem according to the linear weighted sum method;

[0060] S3 solves the single-objective optimization problem to obtain the optimal operation plan considering the energy storage system, and compares and analyzes the optimal operation plan considering the energy storage system and not considering the energy storage system.

[0061] In step S1, according to the predicted values ​​of wind speed, light intensity and...

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Abstract

The invention relates to a grid-connected microgrid day-ahead multi-objective optimization method considering the influence of an energy storage system, and the method comprises the following steps: 1) building a multi-objective microgrid optimization model considering the energy storage system according to the wind speed, illumination intensity and temperature prediction value in the future 24 h;(2) converting a multi-objective optimization problem into a single-objective optimization problem according to the linear weighted summation method; and (3) solving the single-objective optimizationproblem to obtain an optimal operation scheme. Compared with the prior art, the method has the advantages of considering an energy storage system, reducing the operation cost of the system and the like.

Description

technical field [0001] The invention relates to the field of micro-grids, in particular to a multi-objective optimization method for grid-connected micro-grids considering the influence of energy storage systems. Background technique [0002] In recent years, with the aggravation of the global energy crisis, distributed power generation, which has the advantages of reducing environmental pollution, reducing line loss, and improving power quality, has received widespread attention. As a new network structure, microgrid integrates a variety of distributed energy , load, energy storage system and energy management system are combined to finally realize a self-made system of self-control and protection management. Because the microgrid can operate in parallel with the distribution network or in isolation, it can maximize the utilization of distributed power sources and has a good application prospect, so the microgrid has attracted more and more attention. [0003] However, mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06G06Q50/26
Inventor 范宏袁倩倩程浩忠
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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