CPU+multi-GPU heterogeneous mode static safety analysis calculation method

Abstract

The invention discloses a CPU+multi-GPU heterogeneous mode static safety analysis calculation method. For the requirement for fast scanning for static safety analysis of large power grid in a practical engineering application, an OpenMp multithreading technique is adopted for allocating corresponding thread count according to a system GPU configuration condition and a calculation requirement on a CUDA unified calculation frame platform; each thread is uniquely corresponding to a single GPU; on the basis of CPU and GPU hybrid programming development, a CPU+multi-GPU heterogeneous calculation mode is constructed for collaboratively completing the preconceived fault parallel calculation; on the basis of single preconceived fault load flow calculation, the highly synchronous parallel of a plurality of cut-off load flow iterative processes is realized; the parallel processing capability of preconceived fault scanning for the static safety analysis is greatly promoted through element-grade fine grit parallel; a powerful technical support is supplied for the online safety analysis early-warning scanning of an integrated dispatching system of an interconnected large power grid.

Description

technical field [0001] The invention relates to the technical field of electric power system automatic dispatching, in particular to a static security analysis and calculation method in CPU+multi-GPU heterogeneous mode. Background technique [0002] With the rapid development of power system dispatching integration technology, the scale of power grid computing is expanding day by day. Static security analysis and calculation are performed on the basis of the state estimation section of the whole network, and the calculation speed will be difficult to meet the demand. On the one hand, the number of predicted accidents requiring breaking analysis has increased significantly. Even if the direct current method is used for screening, the number of predicted failures requiring detailed breaking scanning will be very considerable. On the other hand, the outage power flow simulation calculation is carried out for each anticipated accident, and the number of calculation nodes increa...

AI Technical Summary

Problems solved by technology

The traditional serial algorithm adopts DC method screening combined with local factorization based on sparse matrix for serial engineering processing, filters non-serious faults, and effectively improves the single-break analysis speed, but still cannot meet the needs of engineering applications

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