A predictive control method of a grid-connected converter based on a structurally adaptive extended state observer (ESO) is provided. The method includes: obtaining data of a grid current and a grid voltage and converting the data to data in a dq coordinate system; calculating a selected voltage vector based on a voltage in the dq coordinate system; adaptively inputting the current in the dq coordinate system to a parallel ESO, a cascade ESO, or a hybrid cascade-parallel ESO, so as to obtain a current predicted current value and estimated total disturbance; carrying out a two-step grid current prediction based on the current predicted current value, the estimated total disturbance and the selected voltage vector; and taking minimizing a cost function as a control target, so as to obtain an optimal voltage vector based on a two-step grid current prediction result, and carrying out switching control of the grid-connected converter.

A power supply restoration method a power grid cluster includes: acquiring a cluster parameter of a target power grid cluster in response to a power supply fault occurred in the target power grid cluster, where the cluster parameter includes at least a node voltage and a node power of each node in the target power grid cluster; constructing a power supply restoration model corresponding to the target power grid cluster based on the cluster parameter, and solving the power supply restoration model to obtain an initial power supply restoration strategy; reconstructing the initial power supply restoration strategy based on an alternating direction method of multipliers to obtain a target power supply restoration strategy; and handling the power supply fault of the target power grid cluster to recover power supply based on the target power supply restoration strategy.

A method and system for post-disaster power restoration in a power grid, and a storage medium are disclosed. The method includes acquiring the target data of the disaster-affected area; constructing overall constraints; determining the travel trajectory of refueling vehicles and their fuel delivery amount at each gas turbine node, the output power of each gas turbine, and the load restoration amount of each load node; and controlling the operating status of load nodes and the output power of gas turbines, and the fuel delivery by refueling vehicles to each gas turbine node based on the travel trajectory of refueling vehicles, the fuel delivery amount of refueling vehicles at each gas turbine node, the output power of each gas turbine and the load restoration amount of each load node.

The disclosure provides an electric power transmission safety monitoring system for a thunderstorm area. The system includes a transmission platform, an area characteristic analysis unit and a transmission influence analysis unit, where the transmission platform may receive an electric power transmission request sent by a current power supply end, determine a power demand end and a transmission area where the power demand end is located. After receiving the area characteristic analysis signal sent by the transmission platform, the area characteristic analysis unit carries out thunderstorm characteristic analysis, and sends the analysis result to the transmission influence analysis unit and the transmission platform. The transmission platform further formulates an electric power transmission strategy.