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GPU memory management method for efficient transient simulation of power electronics

A graphics processor and transient simulation technology, applied in the direction of electrical digital data processing, processor architecture/configuration, data processing applications, etc., can solve problems such as consumption, large simulation time, etc.

Active Publication Date: 2019-01-15
TIANJIN UNIV
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Problems solved by technology

For the exponential integration algorithm, it is necessary to regenerate the state matrix after each state change, and solve the family of functions, which will consumes a lot of simulation time

Method used

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  • GPU memory management method for efficient transient simulation of power electronics
  • GPU memory management method for efficient transient simulation of power electronics
  • GPU memory management method for efficient transient simulation of power electronics

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Embodiment Construction

[0049] The graphics processor memory management method for high-efficiency transient simulation of power electronics according to the present invention will be described in detail below in conjunction with the embodiments and drawings.

[0050] like figure 1 As shown, the graphics processor memory management method for high-efficiency transient simulation of power electronics of the present invention includes the following steps:

[0051] 1) Under the state analysis framework, establish a transient simulation model of the power system to be simulated, described by the following nonlinear differential equations:

[0052]

[0053] Among them, x is the state variable of the electrical system and the control system, and the state matrix A represents the coefficients of the linear part in the system differential equation, including each state quantum module and mutual coupling relationship, reflecting the relevant information used to obtain the state variable x in the system, A...

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Abstract

The memory management method of the graphics processor used for high-efficiency transient simulation of power electronics of the present invention focuses on the contradiction between the limited computational resource situation and the electromagnetic transient simulation computational demand of a large-scale power system. During the simulation process, the rapid change of multiple power electronic switches makes the system state change frequently, furthermore, the state update matrix (img file = 'DDA000175845996000011. TIF' wi= '166' he= '64' / ) needs to be solved and stored many times, whichleads to the problems of low computational efficiency and excessive computational resources. Based on the least frequently used algorithm for memory substitution, on the other hand, with the increasing scale of actual power system, the requirement of simulation scale is also increasing. After using the memory replacement method, the simulation scale can be greatly improved at the expense of little simulation speed.

Description

technical field [0001] The invention relates to a power system simulation method. In particular, it relates to a graphics processor memory management method for high-efficiency transient simulation of power electronics, which is suitable for power system transient modeling and simulation applications. Background technique [0002] In recent years, the power system is facing the challenges of large-scale access to renewable energy and the increasing scale of AC-DC interconnected grid operation in actual operation. Traditional electromagnetic transient simulation algorithms are used to study its complex transient characteristics and operational control issues will be limited in terms of computing resources and computing speed. The electromagnetic transient simulation of power system based on detailed dynamic characteristic modeling of components is gradually gaining more attention and attention in the analysis, design and operation of new energy power systems because it can a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06G06T1/20
CPCG06Q50/06G06T1/20G06F30/20
Inventor 富晓鹏吴蔚王成山李鹏
Owner TIANJIN UNIV
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