1.NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China;2.State Key Laboratory of Smart Grid Protection and Control, Nanjing 211106, China;3.State Grid Ningxia Electric Power Co., Ltd., Yinchuan 750010, China

Aiming at the challenge of wind power output uncertainty to the safe and stable operation of power systems, a prevention and control method for security and stability risk of power systems with large-scale wind power integration is proposed. Considering that the optimization objective is to minimize the control cost of preventive control measures, including the control cost of adjusting the output of thermal power units and the curtailment risk of limiting the output of wind power clusters, the allowable operation risk is transformed into opportunity constraints with reference to the accident level evaluation standard of the power system. By calculating the control performance indices of thermal power units and wind power clusters, the effective control measures are selected, and the control quantities of effective control measures are classified and enumerated to obtain all possible control schemes. The control schemes are verified by parallel implicit enumeration based on the cluster parallel computing platform to obtain the control measures that meet the target function. The example analysis of a practical system verifies the practicability and effectiveness of the proposed method.

This work is supported by State Grid Corporation of China (No. 5100-202135022A-0-0-00).