Automatic network division method and device based on electromagnetic transient parallel computing and terminal equipment
A parallel computing and electromagnetic transient technology, applied in the field of power systems, can solve problems such as difficult network division, and achieve the effect of improving the efficiency of network division
Pending Publication Date: 2021-01-22
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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[0003] However, the existing segmentation method is to divide the original power grid based on circuits. Although this method has a clear physical meaning, it is difficult to achieve fully automated network division, and user intervention is usually required
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] see figure 1 , is a schematic flowchart of an automatic network subdivision method based on electromagnetic transient calculation provided by an embodiment of the present invention, including the following steps:
[0030] S1. Obtain the first network equation according to the improved node analysis method; wherein, the first network equation is Ax=b, A is a node admittance matrix, x is a node voltage, and b is a power supply or a historical item;
[0031] S...
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The invention relates to the field of power systems, and discloses an automatic network division method and device based on electromagnetic transient calculation, and terminal equipment, and the method comprises the steps: obtaining a first network equation according to an improved node analysis method, forming an undirected graph according to a node admittance matrix, dividing the undirected graph, and constructing a boundary block matrix; and decomposing the boundary block matrix into an upper triangular matrix and a lower triangular matrix, obtaining a solution of the first network equationthrough a previous generation descendant method, obtaining a node admittance matrix and a historical item at the next moment according to the solution of the first network equation, and automaticallydividing the network of the power system at the next moment to obtain an admittance matrix and a historical item of the power system at the next moment. Therefore, automatic division of the power system network can be realized, user intervention is not needed, and the network division efficiency is greatly improved.
Description
technical field [0001] The invention relates to the field of power systems, in particular to an automatic network division method, device and terminal equipment based on electromagnetic transient parallel computing. Background technique [0002] At present, a common method for parallel computing of electromagnetic transients is to use the natural decoupling of forward wave propagation on long transmission lines, but this technique is difficult to implement for simulations without transmission lines or very short transmission lines. In order to achieve parallelism without relying on any transmission lines, the concept of segmentation and related methods were proposed. The theory of segmentation simplifies the entire network into sparse interconnections between multiple subsystems, greatly reducing the internal nodes of the subsystems, and then the main components of the network The computation involves only a small number of nodes, and once the network is solved, the solution...
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IPC IPC(8): G06F30/23G06F17/11G06F17/16
CPCG06F30/23G06F17/11G06F17/16
Inventor 吴小珊赵利刚李俊杰王长香周挺辉甄鸿越黄冠标翟鹤峰徐原
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD