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Visualization and automatic generation method of transformer three-phase model based on matlab

An automatic generation and transformer technology, applied in the fields of instrumentation, calculation, electrical and digital data processing, etc., can solve the problems of manual derivation, labor and labor, and achieve the effect of improving software functions, solving errors, and improving efficiency.

Inactive Publication Date: 2019-04-05
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

[0058] In order to solve the above-mentioned problems existing in the prior art, the present invention will propose a method for automatically generating a visual three-phase model of a distribution three-phase transformer based on Matlab, so as to solve the problem of laborious and laborious manual derivation, and improve the calculation of the three-phase three-phase model of the three-phase transformer. Model efficiency and accuracy

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  • Visualization and automatic generation method of transformer three-phase model based on matlab
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  • Visualization and automatic generation method of transformer three-phase model based on matlab

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Embodiment Construction

[0101] The present invention will be further described below by taking the three-phase transformer with D, y11 connection as an example in conjunction with the accompanying drawings.

[0102] Such as Figure 4 As shown, the Matlab-based automatic generation method of transformer three-phase model visualization includes the following steps:

[0103] A. Establish the original admittance matrix Y of the three-phase transformerp

[0104]

[0105] In the formula, α 0 is the non-standard transformation ratio of the primary winding, and is the ratio of the rated voltage of the primary side to the per unit value reference voltage of the primary side, β 0 is the non-standard transformation ratio of the secondary winding, and is the ratio of the rated voltage of the secondary side to the per-unit value reference voltage of the secondary side, and y is the admittance of each equivalent value of the three-phase transformer, and its expression is

[0106] y=1 / z=1 / (r+jx) (26)

[0107...

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Abstract

The invention discloses a Matlab-based visual automatic generation method for a transformer three-phase model. The method comprises the following steps of establishing an original admittance matrix Yp of a three-phase transformer; selecting original secondary line winding connection and group of the three-phase transformer; forming an associated matrix C and modifying the original admittance matrix Yp; deriving a node admittance matrix YTn of the three-phase transformer by symbolic operation; dividing a result of the node admittance matrix YTn of the three-phase transformer obtained by the symbolic operation into four three-order sub-matrixes; and performing display in a formula form directly on an axes control in an interface established by a GUI of Matlab after latex function conversion and processing. According to the method, visualization is realized and software functions are perfected; and the node admittance matrix of the transformer is displayed after being divided into the four sub-matrixes, so that the problem that the axes control cannot display the whole node admittance matrix of the transformer can be solved and the efficiency and accuracy of solving the three-phase model of the three-phase transformer are improved.

Description

technical field [0001] The invention relates to a method for generating a three-phase model of a transformer, in particular to a method for generating a visualized three-phase model of a distribution three-phase transformer used in the calculation of the three-phase power flow of a distribution network. Background technique [0002] The power distribution system is a network system that directly distributes electric energy to end users, which is composed of distribution lines, distribution transformers, distribution voltage regulators, distribution switches, distribution capacitors and distribution loads. To conduct power system analysis, it is first necessary to establish a suitable model for each component in the system. Different from the three-phase symmetrical operation mode of the high-voltage transmission network, the load and network of the distribution network may be asymmetrical. When performing power flow calculations on the distribution network, the characteristi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 姚玉斌阳义青吴志良王丹
Owner DALIAN MARITIME UNIVERSITY
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