Light robustness based dispatch model consideredwind powers ancillary frequency
                                                          LIN Feng1, WANG Hongfu2, WANG Zhen1
(1.College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;2.State Key Laboratory of Power Grid Safety and Energy Conservation,
China Electric Power Research Institute, Beijing 100192, China)

Abstract: In order to overcome the overly conservatism of the traditional robustness method in dealing with the uncertainty of wind power, a light robustness based dispatch model that can consider the uncertainty of wind power with the prediction error information given only was proposed, in which the ancillary frequency support from wind power was introduced and the constraints about the wind farm reserve limits and the conventional reserve limits were formulated. Finally, three methods including the nominalscenario model, the conventional robust model and the proposed light robustness based model were systematically compared to validate the effectiveness of the proposed method, using a modified IEEE 30bus system with wind power integrated. And the results show that the ancillary frequency regulation support can improve the feasibility of the scheduling scheme. Furthermore, the light robustness method is more economical than the traditional robust model.

Key words: dispatch model; light robustness reserve scheduling; deloading control