A GPU-based large-scale power system power flow parallel computing system and method

A large-scale power and system trend technology, applied in complex mathematical operations, etc., can solve problems such as small data volume, low program performance, frequent data access and writing times, and achieve accelerated data reading and fast reading speed , Improve the effect of hardware resource utilization

Active Publication Date: 2018-01-19
STATE GRID CORP OF CHINA +1
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AI Technical Summary

Problems solved by technology

In the process of numerical decomposition of our program, the overall data volume is not large, but the number of data access and writing is frequent, which leads to low program performance

Method used

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  • A GPU-based large-scale power system power flow parallel computing system and method
  • A GPU-based large-scale power system power flow parallel computing system and method
  • A GPU-based large-scale power system power flow parallel computing system and method

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Embodiment Construction

[0066] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0067] For a power network with N nodes (the ground is not included as a reference node), if the network structure and component parameters are known, the network equation can be expressed as

[0068]

[0069] In formula (1), Y is the N×N order node admittance matrix; is the N×1-dimensional node voltage column vector; Injects a current column vector for an N×1 dimensional node. If the non-linearity of the network elements and the phase-shifting transformer are not considered, then Y is a symmetric matrix.

[0070] In power system calculation, the given operating variable is the node injection power, not the node injection current, and the relationship between the two is as follows:

[0071]

[0072] In the formula, is the injected complex power of the node, which is an N×1-dimensional column vector; yes ...

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Abstract

The present invention relates to a GPU-based large-scale power system power flow parallel computing system and method thereof. The system includes a symbolic Jacobian matrix formation and decomposition module, an initialization module, a power flow equation right-term calculation module, a Jacobian matrix assignment module, and a LU Decomposition module and previous generation back-generation module; the formation and decomposition module of the symbolic Jacobian matrix is ​​located at the host end, and the host end transmits the calculation data to the device end; the calculation module of the right end item of the Jacobian matrix, the assignment module of the Jacobian matrix, The LU decomposition module and the previous-generation back-generation module are sequentially connected at the device side. The method includes: (1) transmitting all data required for calculation to the host; (2) generating a symbolic Jacobian matrix and decomposing it symbolically; (3) transmitting the decomposition result to the device at the host; (4) Execute the calculation of the right-hand term of the power flow equation; (5) Execute Jacobian matrix assignment; (6) Execute LU decomposition; (7) Execute previous generation back-substitution.

Description

technical field [0001] The invention belongs to the technical field of power grid simulation, and specifically relates to a GPU-based large-scale power system power flow parallel calculation of systems and methods. Background technique [0002] The task of power flow calculation is to determine the operating status of the system according to the given operating conditions. Specifically, the wiring mode, parameters and operating conditions of the power grid are known, and the bus voltage, branch current, power and network loss of the power system in steady state operation are calculated. For the running system, through the power flow calculation, it can be judged whether the grid bus voltage, branch current and power exceed the limit, and if so, adjust the operation mode. For the power system being planned, the power flow calculation can provide a basis for selecting the power supply method and electrical equipment of the grid. In addition, the power flow calculation can a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/16
Inventor 陈德扬江涵徐得超李亚楼
Owner STATE GRID CORP OF CHINA
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