Research on optimization of power grid range and pre-control strategy of power flow in key areas under ty-phoon weather

Abstract

Typhoons Typhoons are extremely destructive and the route trajectory is ex-tremely uncertain. The power grids in coastal areas are frequently attacked by typhoons, resulting in large-scale power outages. When a typhoon strikes, it is difficult to determine the trajectory, which may cause simultaneous fail-ures of multiple contact lines at the same time and the location of the failure is difficult to predict in advance. Based on the above background, this paper proposes a strategy for optimizing the power supply range of the power grid in key areas and pre-controlling the power flow under typhoon weather. First of all, this article will optimize the scope of key areas. The minimum overhead cable ratio, the optimal generator load capacity ratio and the minimum connection sec-tion power flow between the key area power grid and the external power grid are used as the optimization objective function, and the cuckoo search algo-rithm is used to supply power. Scope is optimized. Based on the above opti-mization results of the power supply range, a power flow pre-control strategy is proposed to ensure that the power flow of the connection section between the power grid in key areas and external power grids is zero by optimizing the output of generators, energy storage equipment, and load shedding, and finally ensure that the key areas under typhoon mode the grid can transition and operate stably.