A Pre-Synchronization Method for Parallel VSGs of Distributed Microgrid Based on Control Mode Switching-Reference-Cited by-同舟云学术

A Pre-Synchronization Method for Parallel VSGs of Distributed Microgrid Based on Control Mode Switching

Published:2023-05-12 Issue:10 Volume:16 Page:4069
ISSN:1996-1073
Container-title:Energies
language:en
Short-container-title:Energies

Author:

Dong Kunyu¹,Jia Jiaoxin²

Affiliation:

1. School of International Education (BAODING), North China Electric Power University, No. 619 Yonghua Road, Baoding 071000, China

2. Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, No. 619 Yonghua Road, Baoding 071000, China

Abstract

For the pre-synchronization method of the virtual synchronous generator (VSG), only the case of a single VSG pre-synchronization and grid connection has been studied and analyzed. If the phase synchronization of multiparallel VSGs in a decentralized microgrid is realized by controlling a VSG, power circulation exists in the pre-synchronization process. Firstly, the structure and control mode of the microgrid are introduced. For the decentralized structure, a control mode switching mechanism under distributed communication is designed, and a pre-synchronization method of parallel VSGs based on control mode switching is proposed. Secondly, a theoretical analysis of the active power circulation problem is performed by an equivalent frequency model for parallel VSGs in the pre-synchronization process. Finally, the simulation results show that the proposed pre-synchronization method can reduce the dynamic power circulation of parallel VSGs by 83%, and improve the pre-synchronization speed by 75%.

Funder

Scientific Research Project of Colleges and Universities in Hebei Province, China

Science and Technology Project of Baoding, China

Fundamental Research Funds for the Central Universities

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Link

https://www.mdpi.com/1996-1073/16/10/4069/pdf

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