We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Influence of Active Power Output and Control Parameters of Full-Converter Wind Farms on Sub-Synchronous Oscillation Characteristics in Weak Grids.
- Authors
Hao, Yafeng; Liang, Jun; Wang, Kewen; Wu, Guanglu; Joseph, Tibin; Sun, Ruijuan
- Abstract
Active power outputs of a wind farm connected to a weak power grid greatly affect the stability of grid-connected voltage source converter (VSC) systems. This paper studies the impact of active power outputs and control parameters on the subsynchronous oscillation characteristics of full-converter wind farms connected weak power grids. Eigenvalue and participation factor analysis was performed to identify the dominant oscillation modes of the system under consideration. The impact of active power output and control parameters on the damping characteristics of subsynchronous oscillation is analysed with the eigenvalue method. The analysis shows that when the phase-locked loop (PLL) proportional gain is high, the subsynchronous oscillation damping characteristics are worsened as the active power output increases. On the contrary, when the PLL proportional gain is small, the subsynchronous oscillation damping characteristics are improved as the active power output increases. By adjusting the control parameters in the PLL and DC link voltage controllers, system stability can be improved. Time-domain results verify the analysis and the findings.
- Subjects
OSCILLATIONS; WIND power plants; ELECTRIC power distribution grids; PHASE-locked loops; MAXIMUM power point trackers; VOLTAGE-frequency converters; IDEAL sources (Electric circuits)
- Publication
Energies (19961073), 2020, Vol 13, Issue 19, p5225
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en13195225