Study on the status quo and development trend of grid-forming converter technology

doi:10.3969/j.issn.2097-0706.2022.09.009

Abstract

Abstract:

Due to the numerous electric and electrical devices and high-penetration new energy in a power system,the system's inertia tends to decrease and its strength and stability are hampered. In order to improve the stability of the system,a grid-forming converter technology which gives play to the flexibility and controllability of converters,compensates for the missing inherent inertia damping and provides reliable voltage and frequency support for the system is proposed.Based on the comparison between grid-forming control and gird-following control technologies,different network construction control strategies are analyzed. Then, the grid-forming high-pressure energy storage technology is introduced.The bottlenecks,challenges and feasible solutions of the technology are pointed out.The research results show that since the grid construction control technology can effectively improve the inertia damping,and provide the voltage and frequency support for the power system,it is promising in new power systems with high proportion of new energy and a large quantity of electronic equipment.

Key words: new energy, high permeability, grid-forming control, converter, virtual synchronous generator, virtual inertia, grid-forming energy storage, electric and electrical devices, new power system, carbon neutrality

CLC Number:

TK01：TM46

YU Guo, WU Jun, XIA Re, CHEN Yihui, GUO Zihui, HUANG Wenxin. Study on the status quo and development trend of grid-forming converter technology[J]. Integrated Intelligent Energy, 2022, 44(9): 65-70.

Figures/Tables 4

References 20

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