Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters

The development trend of high shares of renewables and power electronics has increased the demand for new energy converters in the power system, but there is a lack of systematic research on the stability of different types of converters when transmitting power, which is worth exploring in depth. In...

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Main Authors: Bojun Kong, Jian Zhu, Shengbo Wang, Xingmin Xu, Xiaokuan Jin, Junjie Yin, Jianhua Wang
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/16/6/2594
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author Bojun Kong
Jian Zhu
Shengbo Wang
Xingmin Xu
Xiaokuan Jin
Junjie Yin
Jianhua Wang
author_facet Bojun Kong
Jian Zhu
Shengbo Wang
Xingmin Xu
Xiaokuan Jin
Junjie Yin
Jianhua Wang
author_sort Bojun Kong
collection DOAJ
description The development trend of high shares of renewables and power electronics has increased the demand for new energy converters in the power system, but there is a lack of systematic research on the stability of different types of converters when transmitting power, which is worth exploring in depth. In this study, the power transfer capabilities of grid-forming and grid-following converters are investigated separately through an equivalent circuit diagram and phasor diagram when connected to the grid, and a quantitative relationship between converters’ power transmission limit and short circuit ratio under static stability conditions is obtained, leading to the conclusion that, in terms of power transmission, grid-forming converters are more suitable for weak grids with high damping and low inertia, whereas grid-following converters are more suitable for strong grids with high inertia. The conclusions are further verified by constructing the converter grid-connected models for different grid strengths through the PLECS simulation platform and the real-time simulation RTBOX1 and F28379D launchpad platform.
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spelling doaj.art-33ed7cef769948fdaa25c7680fb098fb2023-11-17T10:48:16ZengMDPI AGEnergies1996-10732023-03-01166259410.3390/en16062594Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following ConvertersBojun Kong0Jian Zhu1Shengbo Wang2Xingmin Xu3Xiaokuan Jin4Junjie Yin5Jianhua Wang6State Grid Yangzhou Power Supply Company, Yangzhou 210019, ChinaState Grid Yangzhou Power Supply Company, Yangzhou 210019, ChinaState Grid Yangzhou Power Supply Company, Yangzhou 210019, ChinaState Grid Yangzhou Power Supply Company, Yangzhou 210019, ChinaSchool of Electrical Engineering, Southeast University, Nanjing 210096, ChinaSchool of Electrical Engineering, Southeast University, Nanjing 210096, ChinaSchool of Electrical Engineering, Southeast University, Nanjing 210096, ChinaThe development trend of high shares of renewables and power electronics has increased the demand for new energy converters in the power system, but there is a lack of systematic research on the stability of different types of converters when transmitting power, which is worth exploring in depth. In this study, the power transfer capabilities of grid-forming and grid-following converters are investigated separately through an equivalent circuit diagram and phasor diagram when connected to the grid, and a quantitative relationship between converters’ power transmission limit and short circuit ratio under static stability conditions is obtained, leading to the conclusion that, in terms of power transmission, grid-forming converters are more suitable for weak grids with high damping and low inertia, whereas grid-following converters are more suitable for strong grids with high inertia. The conclusions are further verified by constructing the converter grid-connected models for different grid strengths through the PLECS simulation platform and the real-time simulation RTBOX1 and F28379D launchpad platform.https://www.mdpi.com/1996-1073/16/6/2594grid-forming convertergrid-following converterstatic power transmission limitpower couplingshort circuit ratio
spellingShingle Bojun Kong
Jian Zhu
Shengbo Wang
Xingmin Xu
Xiaokuan Jin
Junjie Yin
Jianhua Wang
Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters
Energies
grid-forming converter
grid-following converter
static power transmission limit
power coupling
short circuit ratio
title Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters
title_full Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters
title_fullStr Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters
title_full_unstemmed Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters
title_short Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters
title_sort comparative study of the transmission capacity of grid forming converters and grid following converters
topic grid-forming converter
grid-following converter
static power transmission limit
power coupling
short circuit ratio
url https://www.mdpi.com/1996-1073/16/6/2594
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