Two-stage Risk Control Method of the Distribution Network for Resilience Enhancement

The development of renewable energy, such as solar energy, is of great significance to promote energy transition and the realization of carbon peak and carbon neutrality goals. From the perspective of ensuring the reliability of the renewable power system, a two-stage risk control method of distribution network for resilience enhancement is proposed. First, an operational risk qualification model considering the fault of distribution lines is built, and a risk control framework of the distribution network with preventive control and corrective control is proposed. Secondly, a demand response (DR) model of electricity users is established and the preventive control model of the distribution network with operational risk is constructed. Then, aiming at minimizing the emergency risk when fault occurs, the corrective control method of the distribution network is proposed. Finally, the modified IEEE 33-node distribution system is utilized for the case study, and the results show that the proposed two stage risk control method can effectively reduce the operating cost of the distribution network, and help to alleviate the load shedding situation when potential fault occurs.