A configuration method of active shutdown measures for large power supply output channel failure

Abstract

The invention relates to an active generator tripping measure configuration method for large power transmission channel fault. The method comprises steps: whether large power transmission channels exist in a power grid system is judged; a fault set in which the power grid system is still out-of-step after caused out-of-step fault is processed by adopting a conventional splitting measure is acquired; a large power transmission channel sub criterion P<Ei> of the fault c is calculated; a generator tripping number is counted, and a no-fault large power transmission channel power transmission limit sub criterion P<Gi> is calculated; a power grid system frequency recovery criterion P<Fi> is calculated; a power set out-of-step sub criterion P<Oi> of the fault c is calculated; and according to startup delay T<DELAY> and an active generator tripping criterion J corresponding to the fault c, whether to start the active generator tripping measure is judged. The method provided by the invention can effectively handle the out-of-step oscillation problem caused by related large power transmission channel serious fault, the power grid recovery effects are improved obviously, and a perfect configuration scheme is provided for actual operation scheduling of the power grid.

Description

technical field [0001] The invention relates to the field of power grid simulation analysis, in particular to a method for configuring active cut-off measures for failure of a large power supply sending channel. Background technique [0002] With the further development of my country's power grid, grid interconnection is the development trend of my country's future power grid. On the one hand, the interconnected large grid enhances the power transmission capacity of the grid, and at the same time makes the stability of the grid more complicated. To ensure the stability of the synchronous power grid and avoid large-scale power outages, the safety and stability control system of the power grid is very important, especially the out-of-step decoupling device. The out-of-step separation criterion has always been a research hotspot at home and abroad. Such as extracting the characteristics of the local quantity in the out-of-step oscillation to form the out-of-step decoupling cri...

AI Technical Summary

Problems solved by technology

From the perspective of the adaptability of conventional decoupling measures, the adaptability of conventional decoupling measures is poor, and it is difficult to eliminate the power grid in most cases. Network-wide loss of synchronization caused by faults

Therefore, in view of severe faults that affect the output lines of intensive large power sources and cause out-of-synchronization, new active control measures may be adopted to eliminate out-of-synchronization oscillations in the entire network when conventional decoupling measures are not well adapted or fail

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