Analysis of wideband interactions in multiple offshore wind farms interconnected with AC grids

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-02-10 DOI:10.1016/j.epsr.2025.111489

Lei Gao, Jing Lyu, Xu Cai

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引用次数: 0

Abstract

The increasing integration of wind power sources into power grids has elevated the risks of wideband oscillations in offshore wind farm (OWF) projects. The stability of interconnected systems in the wideband frequency range is not yet fully understood, which poses challenges for effective power grid planning and operation. This paper investigates the wideband interaction stability of three OWFs interconnected to two AC grids in a meshed network configuration. Firstly, a comprehensive small-signal state-space model is established and validated, incorporating wind power converter control, control delays, and distributed capacitance of transmission cables. Subsequently, the main influencing factors on the stability in different frequency bands are identified based on the participation factor and sensitivity analysis. Furthermore, the wideband stability including sub/super synchronous oscillation (SSO) and medium/high frequency oscillation (MFO/HFO) of the interconnected system is thoroughly analyzed by exploring the intricate interactions among OWF rated capacity, interconnected cables, transmission lines, and AC grids. The theoretical insights derived from this analysis hold significant value for the planning and design of practical OWFs. Finally, the case studies through time-domain simulations are carried out to verify the SSO and MFO/HFO stability analysis, respectively.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.