Flexible Grid-Connected/Islanded Switching for Microgrids under Main Grid Faults

Yi Xiao

doi:10.47297/taposatWSP2633-456928.20250608

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Flexible Grid-Connected/Islanded Switching for Microgrids under Main Grid Faults

Volume 6, Issue 8

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Flexible Grid-Connected/Islanded Switching for Microgrids under Main Grid Faults
Flexible Grid-Connected/Islanded Switching for Microgrids under Main Grid Faults
School of Electrical Engineering and Automation Tianjin University of Technology, Tianjin, 300387, China
Vol. 6, Issue 8, Pages: 153-158(2025)
Published：30 August 2025
DOI：10.47297/taposatWSP2633-456928.20250608
Accepted：

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Yi Xiao.Flexible Grid-Connected/Islanded Switching for Microgrids under Main Grid Faults[J].Theory and Practice of Science and Technology,2025,06(08):153-158.
DOI：

Yi Xiao.Flexible Grid-Connected/Islanded Switching for Microgrids under Main Grid Faults[J].Theory and Practice of Science and Technology,2025,06(08):153-158. DOI： 10.47297/taposatWSP2633-456928.20250608.

摘要

Abstract

With the acceleration of the energy transition and the continuous increase in the penetration of distributed generation

microgrids have become key carriers for integrating distributed energy resources. Consequently

the grid-connected/islanded switching technology is now a core element in ensuring grid resilience and power supply reliability. This paper systematically reviews the research status and development trends of flexible grid-connected/islanded switching technology for microgrids under main grid faults. It comprehensively analyzes the evolution paths

traditional control strategies

and intelligent collaborative methods. Traditional control techniques discussed include improvements in droop control

power compensation

phase pre-synchronization mechanisms

and communication protocol optimization schemes. Intelligent collaborative technologies examined encompass cutting-edge directions such as data-driven control

multi-agent collaborative decision-making

and deep reinforcement learning. Domestic and international case studies reveal the innovative value of PV-Storage-DC-Flexibility (PSDF) systems in practice

summarizing the performance advantages and switching processes of DC microgrid architectures. Research shows that adaptive control strategies can reduce transition processes to millisecond levels

and intelligent collaborative architectures significantly enhance renewable energy accommodation capacity. Finally

challenges such as the accuracy of multi-source data fusion

adaptability to complex fault scenarios

and the stability of hybrid systems are identified as future research priorities. This review provides theoretical references for building high-resilience smart grids.

关键词

Keywords

references

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