A hierarchical frequency stability control strategy for distributed energy resources based on ADMM

Autor: Guofeng Lan, Jun Xiao, Wen Zhao, Wei Li, Yankai Zhao, Yuchao Liu, Licheng Yan, Lijie Zhao
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Engineering and Applied Science, Vol 71, Iss 1, Pp 1-28 (2024)
Druh dokumentu: article
ISSN: 1110-1903
2536-9512
DOI: 10.1186/s44147-024-00519-2
Popis: Abstract With the large-scale distributed energy resources (DERs) interfaced by power electronic converters connected to the power grid, the traditional synchronous generation is gradually replaced, and the inertia and primary frequency regulation capability of the power system is weakened, which seriously threatens the frequency security of the power grid. In view of the above problems, a hierarchical control strategy by coordinating the distributed wind turbine (WT) and photovoltaic (PV) is presented to improve the transient frequency (TF) and steady-state frequency (SSF). For the system control level, the optimal frequency regulation coefficients of multiple WTs and PVs clustering systems are determined by the optimal control principle with minimum frequency regulation energy, while considering the constraints of TF and SSF. For the WT/PV control level, the frequency regulation coefficients of WTs and PVs are solved by the model predictive controller (MPC) and alternating direction method of multipliers (ADMM), with the minimum control cost of WT and PV. It achieves the optimal allocation of frequency regulation power and improves the computing efficiency. Finally, the validity of the proposed method is tested in the modified IEEE 10-machine 39-bus system.
Databáze: Directory of Open Access Journals
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