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Time-space parallel simulation method for transient stability of large-scale power system

A large-scale power and transient stability technology, applied in the field of simulation, can solve problems such as weak logic processing capabilities

Inactive Publication Date: 2015-02-18
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
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Problems solved by technology

[0005] 3. A short circuit fault occurs
However, its logic processing capability is relatively weak, and it is more suitable for data-intensive computing.

Method used

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  • Time-space parallel simulation method for transient stability of large-scale power system
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  • Time-space parallel simulation method for transient stability of large-scale power system

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Embodiment Construction

[0099] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0100] Such as figure 1 , the present invention provides a large-scale power system transient stability time-space parallel simulation method, said method comprising the following steps:

[0101] Step 1: Establish the AC and DC system model;

[0102] Step 2: Spatial decoupling of the AC-DC system and temporal decoupling of the DC system;

[0103] Step 3: Parallel simulation calculation of AC and DC systems.

[0104] In the step 1, the AC-DC system model includes an AC system dynamic model, a DC system model and an AC-DC grid model;

[0105] The AC system dynamic model includes a generator model, an excitation system model and a prime mover system model; the DC system model includes a DC cable model, a DC control system model and a converter model.

[0106] Such as figure 2 , the DC cable model adopts a T-type model, and the dynamic equation correspondin...

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Abstract

The invention provides a time-space parallel simulation method for the transient stability of a large-scale power system. The method comprises the following steps: establishing a model for an alternating current-direct current system; performing space decoupling on the alternating current-direct current system, and performing time decoupling on a direct current system; performing parallel simulation calculation on the alternating current-direct current system. The method disclosed by the invention uses a CPU / GPU (central processing unit / graphic processing unit) heterogeneous platform to realize the transient simulation of a large-scale alternating current-direct current interconnected power system, according to the independence of the alternating-current system and the direct-current system on the space and the characteristic that the alternating-current system and the direct-current system are easy to decouple in an electrical respect, a calculation task corresponding to the alternating-current system is assigned to a CPU, a calculation task corresponding to the direct-current system is assigned to a GPU, and parallelism on the space is realized; a traveling time window technique is used, the waste of GPU calculation resources is avoided, and the utilization efficiency of the GPU is improved.

Description

technical field [0001] The invention relates to a simulation method, in particular to a large-scale power system transient stability time-space parallel simulation method. Background technique [0002] The task of transient stability calculation is to determine whether each generator can continue to operate synchronously after the power system suffers a large disturbance through numerical calculation methods. Large power system disturbances that usually need to be considered include: [0003] 1. Sudden changes in load, such as input and output of large-capacity users; [0004] 2. Cut out or put in the main components of the system, such as generators, transformers or lines; [0005] 3. A short circuit fault occurs. [0006] With the development of the electric power industry, the interconnection between power grids is getting closer, and my country's power grid is forming a large-scale AC-DC interconnection power network. After the scale of the interconnected grid expand...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 江涵张爽陈德扬张星徐得超李亚楼高峰张军
Owner STATE GRID CORP OF CHINA
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