Bai Hao*, Huang Andi and Zhou Changcheng Pages 1078 - 1086 ( 9 )
Background: The penetration level of a wind farm with transient stability constraint and static security constraint has been a key problem in wind power applications.
Objective: The study explores maximum penetration level problem of wind considering transient stability constraint and uncertainty of wind power out, based on credibility theory and corrected energy function method.
Methods: According to the corrected energy function, the transient stability constraint of the power grid is transferred to the penetration level problem of a wind farm. Wind speed forecast error is handled as a fuzzy variable to express the uncertainty of wind farm output. Then this paper builds a fuzzy chance-constrained model to calculate wind farm penetration level. To avoid inefficient fuzzy simulation, the model is simplified to a mixed integer linear programming model.
Results: The results validate the proposed model and investigate the influence of grid-connection node, wind turbine characteristic, fuzzy reliability index, and transient stability index on wind farm penetration level.
Conclusion: The result shows that the model proposed in this study can consider the uncertainty of wind power out and establish a quantitative transient stability constraint to determine the wind farm penetration level with a certain fuzzy confidence level.
Penetration level, wind farm, transient stability, credibility, fuzzy chance constrained model, uncertainty.
Electric Power Research Institute, China Southern Power Grid, Guangzhou 510063, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510063, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510063