Stability Analysis of a PMSG-Based Large Offshore Wind Farm Connected to a VSC-HVDC
- Resource Type
- Conference
- Authors
- Kunjumuhammed, Linash; Pal, Bikash; Gupta, Robin; Dykes, Kevin
- Source
- 2018 IEEE Power & Energy Society General Meeting (PESGM) Power & Energy Society General Meeting (PESGM), 2018 IEEE. :1-1 Aug, 2018
- Subject
- Engineering Profession
Power, Energy and Industry Applications
Wind farms
Stability analysis
HVDC transmission
Modal analysis
Wind turbines
Power system stability
Voltage-source converters
- Language
- ISSN
- 1944-9933
This paper presents modal analysis of a large offshore wind farm using permanent magnet synchronous generator (PMSG)-type wind turbines connected to a voltage source converter HVDC (VSC-HVDC). Multiple resonant frequencies are observed in the ac grid of offshore wind farms. Their control is crucial for the uninterrupted operation of the wind farm system. The characteristics of oscillatory modes are presented using modal analysis and participation factor analysis. Sensitivity of critical modes to wind turbine design parameters and their impact on closed loop stability of the system are discussed. A comparison between a full wind farm model and an aggregated model is presented to show differences in the characteristics of critical modes observed in the models, and implication of using the models for stability studies It is concluded that robust control design is important for reliable operation of the system.