Comparative Study of the Transmission Capacity of Grid-Forming Converters and Grid-Following Converters
Author:
Kong Bojun1, Zhu Jian1, Wang Shengbo1, Xu Xingmin1, Jin Xiaokuan2ORCID, Yin Junjie2ORCID, Wang Jianhua2
Affiliation:
1. State Grid Yangzhou Power Supply Company, Yangzhou 210019, China 2. School of Electrical Engineering, Southeast University, Nanjing 210096, China
Abstract
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.
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
Reference16 articles.
1. Research on the influence of resilient grid learning ability on power system;Huang;Energy Rep.,2022 2. Granata, S., Di Benedetto, M., Terlizzi, C., Leuzzi, R., Bifaretti, S., and Zanchetta, P. (2022). Power Electronics Converters for the Internet of Energy: A Review. Energies, 15. 3. Small-signal stability assessment of power electronics based power systems: A discussion of impedance-and eigenvalue-based methods;Amin;IEEE Trans. Ind. Appl.,2017 4. Iioka, D., Kusano, K., Matsuura, T., Hamada, H., and Miyazaki, T. (2022). Appropriate Volt–Var Curve Settings for PV Inverters Based on Distribution Network Characteristics Using Match Rate of Operating Point. Energies, 15. 5. Khan, S.A., Wang, M., Su, W., Liu, G., and Chaturvedi, S. (2022). Grid-Forming Converters for Stability Issues in Future Power Grids. Energies, 15.
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