Active splitting control method integrating offline simulation and real-time information monitoring

Abstract

The invention discloses an active splitting control method integrating offline simulation and real-time information monitoring. The method comprises: determining an anticipated fault set according toa power system grid structure and an operation mode; based on an offline simulation model, simulating and calculating unit power angle swing curves under all faults, and performing trajectory clustering by applying an extended equal-area criterion; according to a screened grouping results, clustering to obtain all oscillation grouping results which may be excited of the system and a correspondingtrigger fault set, and determining an initial splitting section; selecting an optimal active splitting section according to the active power flow of the contact channel; and monitoring system fault information and important electrical quantity information in real time, and triggering active splitting control when a fault triggering or wide-area information triggering criterion is met. According tothe invention, the influence of serious faults on the power grid can be isolated, and safe and stable operation of the local power grid is ensured.

Description

technical field [0001] The invention relates to an active decoupling control method that integrates off-line simulation and real-time information monitoring, and belongs to the technical field of power system safety and stability control. Background technique [0002] With the rapid development of my country's UHV AC and DC power grid, while promoting the optimal allocation of large-scale resources, it also brings many challenges to the safe and stable operation of the power grid. On the one hand, the coupling characteristics between AC, DC and multi-DC are intensified, and the oscillation center of the system shifts significantly with the operation mode after being disturbed. Under the risk of network-wide instability caused by large disturbances, whether the tightly coupled local grid can maintain the stable operation of the local grid. [0003] Especially under extremely serious faults, in order to prevent the expansion of safety accidents, it is necessary to actively di...

AI Technical Summary

Problems solved by technology

On the one hand, the coupling characteristics between AC, DC and multi-DC are intensified, and the oscillation center of the system shifts significantly with the operation mode after being disturbed. Under the risk of network-wide instability caused by large disturbances, can a tightly coupled local grid maintain stable operation of the local grid?

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