A Method of Generating Ice Accident Disposal Plan and Evaluating Power Supply Capacity Based on Power Flow Transfer Relationship

To solve the problems of many high-risk lines and fault combinations in the event of ice accidents, and the heavy workload of grid mode personnel in formulating ice accident plans and evaluating the power supply capacity of ice-constrained areas, a method for generating ice accident disposal plans and evaluating power supply capacity based on power flow transfer relationship is proposed. The enumeration method is used to automatically generate the ice disaster accident mode data of the power grid, and the active power flow of the fault state branch is described as a function of the active power flow of the base state transmission channel based on the power flow transfer relationship, so as to establish the accident disposal plan and power supply capacity evaluation model, and reduce the computation amount of the model solution through the redundant constraint filtering technology. Through the solution, the unit output adjustment strategy, regional power supply capacity and control key constraints are automatically given, which greatly reduces the workload of the grid mode personnel and provides auxiliary decision-making. The example results of Guilin Power Grid show that each ice accident approach takes 3.6 seconds on average, and the proposed method can well meet the requirements of practical engineering applications.