Power System Restoration Strategy with High Proportion of New Energy Considering Power Network Pre-Decision

After a large number of new energy sources are connected, how to realize the rapid networking of various power sources in the recovery process to give full play to the load recovery capability of the network island is the key problem for the power system to quickly restore power supply and reduce power outage losses. Firstly, a pre-decision method for master-slave network of power supply for power grid restoration is proposed, and the necessary conditions and ranking indexes of power supply network operation are established. Then, an optimization model of power system restoration control with the goal of maximizing the net benefit of restoration is established, which comprehensively considers the load recovery benefit of the overall restoration scheme, the cost of network power supply and the risk of network restoration caused by factors such as the uncertainty of new energy power output and the time-varying fault probability of branches. Finally, based on the IEEE 69 bus system, the effectiveness of the proposed strategy is verified, and the networking scheme with economy, reliability and rapidity is effectively selected.