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2000
Volume 18, Issue 10
  • ISSN: 2352-0965
  • E-ISSN: 2352-0973

Abstract

Background

The multi-microgrid interconnection system is an effective method to solve the problem of distributed energy consumption, enhance the stability and reliability of the power grid, connect multiple microgrids with the main power grid, and achieve energy sharing and exchange, thereby improving energy utilization and reducing transaction costs.

Objective

Develop advanced multi-microgrid energy optimization scheduling strategy, which can better integrate and utilize renewable energy, reduce carbon emissions, obtain more economic energy scheduling scheme, and reduce operation and maintenance costs.

Methods

It achieves a three-layer scheduling strategy by coordinating microgrids with the main grid, microgrids with other microgrids, and distributed power sources within microgrids. It first satisfies the maximum consumption of renewable energy in multi-microgrid systems, and then satisfies the economic scheduling between multi-microgrids and the main grid, thus achieving the goal of low-carbon economic operation. When scheduling, priority should be given to coordinating the energy flow among microgrids. When the distributed power sources within a microgrid cannot satisfy the electricity demand, or when the electricity demand is too low, resulting in the energy storage system (ESS) being fully charged and leading to an excess of renewable energy, the interconnection scheduling between microgrids and the main grid should be initiated to achieve optimal energy sharing scheduling.

Results

To validate the effectiveness of the proposed model, a case study involving three interconnected microgrids was conducted. A comparison is made between the proposed optimized dispatch model and the scenario where microgrids are not interconnected. The results indicate a total cost reduction of 128.1 CNY and an environmental governance cost reduction of 13 CNY.

Conclusion

The results demonstrate that the proposed economic dispatch model for interconnected microgrids reduces both operational and environmental governance costs, enhances the utilization of renewable energy, decreases pollutant emissions, and aligns with the operational goals of a low-carbon economy. The feasibility and effectiveness of this method for energy scheduling in multi-microgrid interconnected systems are verified.

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2025-01-06
2026-01-02

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Energy Optimization Dispatch for Multiple Interconnected Microgrids with a Low-carbon Economy Objective
Recent Advances in Electrical & Electronic Engineering 18, 2038 (2025); https://doi.org/10.2174/0123520965349069241023033931
/content/journals/raeeng/10.2174/0123520965349069241023033931
/content/journals/raeeng/10.2174/0123520965349069241023033931
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  • Article Type:     Research Article
Keyword(s): economic dispatch; energy optimization; energy sharing; low-carbon economy; Multi-microgrid; renewable energy

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