Active defense method for key area power grid in typhoon mode

Abstract

The invention provides an active defense method for a key area power grid in a typhoon mode. The active defense method comprises the steps of S1, determining power flow transfer characteristics of thekey area power grid in a fault mode; S2, actively searching a prevention and control section based on the power flow transfer characteristics; S3, performing zero-cutting control on the prevention and control section searched by the key area power grid and the large power grid; S4, controlling generators and loads in the key area power grid; S5, controlling the emergency capacity of the active power of the key area power grid in advance; S6, determining the optimal opportunity of active defense; and S7, carrying out generator tripping and load shedding optimization control. According to the method, in consideration of the situation that simultaneous fault tripping of a plurality of tie lines is possibly caused in the extreme disaster climate invasion process, an active defense section search strategy is provided based on the thought of power flow pre-control, and the strategy can ensure that the impact on the key area power grid is the minimum when the plurality of tie lines break down.

Description

technical field [0001] The invention relates to the field of power grid maintenance methods, and more specifically, to an active defense method for power grids in key areas under typhoon mode. Background technique [0002] Disastrous weather causes power grid down poles and towers, and a large number of line trips will lead to large-scale power flow shifts in the power grid, which will cause the grid to collapse. Typhoon is a kind of disaster weather. Although the probability of typhoon is low, it has the characteristics of high intensity, wide range, and rapid disaster, which has a serious impact on the safe and stable operation of the power grid. [0003] With regard to the risk of large-scale power outages caused by natural disasters and weather, the power grid collapse and disconnection phenomenon, the current power grid dispatching level can only rely on manual means for passive defense, or can only predict the damage probability of typhoons to transmission lines in adv...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the current technical means described in the above-mentioned background technology, it is impossible to predict and pre-control typhoons and other faults in advance, and to stabilize the power grid by means of active defense, thereby avoiding large-scale disasters caused by disasters and climates. The problem of area power outages, providing an active defense method for power grids in key areas under typhoon mode

Images