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Electromagnetic transient parallel simulation method and system based on GPU

An electromagnetic transient and simulation method technology, which is applied in design optimization/simulation, electrical digital data processing, special data processing applications, etc., can solve the problem that it can no longer objectively reflect the real situation, lacks full electromagnetic transient simulation analysis, and is difficult to accurately Reflecting the real situation of the transient process of the power system and other issues

Inactive Publication Date: 2019-07-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This makes the original electromechanical transient simulation based on the quasi-steady-state model no longer objectively reflect the real situation in some special operating conditions
[0003] To sum up, the current existing technology is difficult to accurately reflect the real situation of the transient process of the power system, and there is a lack of methods that can effectively conduct full electromagnetic transient simulation analysis

Method used

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  • Electromagnetic transient parallel simulation method and system based on GPU
  • Electromagnetic transient parallel simulation method and system based on GPU
  • Electromagnetic transient parallel simulation method and system based on GPU

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Embodiment 1

[0041] figure 1 The flow chart of the GPU-based electromagnetic transient parallel simulation method provided by the embodiment of the present invention.

[0042] refer to figure 1 , the GPU-based electromagnetic transient parallel simulation method includes:

[0043] Step S101, acquiring grid line parameters, operation information and fault information;

[0044] Step S102, forming an original matrix equation group according to line parameters, operation information and fault information;

[0045] Step S103, performing preprocessing and symbolic decomposition on the matrix equations to obtain an upper triangular matrix;

[0046] Step S104, utilizing the GPU multi-threaded parallel algorithm to perform LU decomposition on the upper triangular matrix;

[0047] Step S105, using the forward-backward algorithm to calculate the decomposed matrix to obtain the final solution.

[0048] Specifically, the embodiment of the present invention proposes a GPU-based parallel algorithm for...

Embodiment 2

[0064] The GPU-based electromagnetic transient parallel simulation system includes:

[0065] An acquisition unit, used to acquire power grid line parameters, operation information and fault information;

[0066] The first calculation unit is used to form the original matrix equations according to the line parameters, operation information and fault information;

[0067] The second calculation unit is used to perform preprocessing and symbolic decomposition on the matrix equation system to obtain an upper triangular matrix;

[0068] The third calculation unit is used to perform LU decomposition on the upper triangular matrix by using the GPU multi-threaded parallel algorithm;

[0069] The fourth calculation unit is used to calculate the decomposed matrix by using the forward-backward algorithm to obtain the final solution.

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Abstract

The invention provides an electromagnetic transient parallel simulation method and system based on GPU. The method comprises the steps of obtaining power grid line parameters, operation information and fault information; forming an original matrix equation set according to the line parameters, the operation information and the fault information; preprocessing and symbol decomposition are carried out on the matrix equation set to obtain an upper triangular matrix; carrying out LU decomposition on the upper triangular matrix by utilizing a GPU multi-thread parallel algorithm; and calculating thedecomposed matrix by using a forward and backward substitution algorithm to obtain a final solution. Through the parallel simulation technology based on the GPU multi-core processor, an electromagnetic transient parallel simulation method suitable for a large-scale power system is developed, the analysis simulation capacity of existing power grid simulation software can be further improved, and powerful technical support is provided for planning development and safe and stable operation of a national power grid.

Description

technical field [0001] The invention relates to the field of power system transient technology, in particular to a GPU-based electromagnetic transient parallel simulation method and system. Background technique [0002] In recent years, my country has formed the power system network with the highest voltage level and the largest scale in the world, and is developing from the traditional grid to the smart grid. However, due to the access of a large number of high-voltage direct current, new energy, and FACTS in modern power systems, electromagnetic transient processes at the microsecond and millisecond level, electromechanical transient processes at the millisecond and second level, and medium and long-term dynamic processes at the minute level and above The degree of coupling among them is getting higher and higher, and the mutual influence is also getting bigger and bigger. This makes the original electromechanical transient simulation based on the quasi-steady model no lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 林芝茂韩民晓
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)