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A two-layer parallel method for static security analysis based on gpu-cpu heterogeneous computing platform

A static security analysis and computing platform technology, applied in the static security analysis double-layer parallel field, can solve problems such as high power consumption, and achieve the effect of reducing computing time, avoiding data transmission, and accelerating computing speed

Active Publication Date: 2021-09-03
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Traditional online analysis is realized through CPU cluster parallelism, which consumes a lot of power

Method used

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  • A two-layer parallel method for static security analysis based on gpu-cpu heterogeneous computing platform
  • A two-layer parallel method for static security analysis based on gpu-cpu heterogeneous computing platform
  • A two-layer parallel method for static security analysis based on gpu-cpu heterogeneous computing platform

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Embodiment Construction

[0093] Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail:

[0094] Such as figure 1 As shown, a two-layer parallel method for static security analysis based on GPU-CPU heterogeneous computing platform,

[0095] GPU is an electronic circuit specially used to process graphics data and accelerate image output. In recent years, it has become more and more common to use GPU as a stream processor for general computing. GPUs can be used for a variety of parallel computing tasks, such as molecular dynamics calculations. They are well suited for calculations with very high volumes of data input and output. A large amount of data allows the GPU to fully utilize the GPU's vector computing unit or the structure of single instruction multiple data. GPU-based computing plays an increasing role in large-scale computing, and three of the ten most powerful supercomputers in the world take advantage of GPUs. GPU impl...

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Abstract

The invention relates to a double-layer parallel method for static security analysis based on a GPU-CPU heterogeneous computing platform, comprising: initializing power system data, setting K expected faults according to actual needs; extracting n expected faults n∈K, using The GPU allocates multiple groups of threads for n preset faults, and performs power flow calculations for each thread group under each expected fault. Each group of threads includes an iteration of multiple groups of power flow calculations; The convergence of the example; if the power flow calculation under a certain thread group converges, a new expected fault is extracted, and the power flow calculation is performed until all fault calculations are completed. The algorithm realizes the synchronous calculation of multiple expected accidents on a single GPU, and can process the calculation tasks corresponding to the nodes in the same layer of the elimination tree in parallel; thereby avoiding the waste of GPU computing resources and improving the utilization efficiency of GPU.

Description

technical field [0001] The invention relates to the field of power grid simulation, in particular to a double-layer parallel method for static security analysis based on a GPU-CPU heterogeneous computing platform. Background technique [0002] Static security analysis is a basic tool in online analysis of power systems, which needs to check the operating state of the system after the system fails. In the power system, in order to avoid equipment damage caused by overload and voltage crossing, or cause a large-scale chain reaction power outage due to the outage of overloaded equipment under the protection of the system, it is very important to perform static safety analysis of the system online. Static security analysis is essentially the steady-state analysis process of power system operation, that is, the power flow problem, and does not involve the dynamic characteristics of components and the dynamic process of the power system. Static security online analysis sets fault...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J3/001H02J2203/20
Inventor 江涵陈德扬徐得超张星李亚楼
Owner CHINA ELECTRIC POWER RES INST
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