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Transformer simulation model for accurately simulating characteristics of iron core

A simulation model, transformer technology, applied in design optimization/simulation, instruments, special data processing applications, etc., can solve the problems affecting the accuracy of power system simulation, cannot reflect the hysteresis characteristics of transformer core, cannot simulate the influence of transformer core remanence, etc. problem, to achieve the effect of improving the simulation speed

Inactive Publication Date: 2018-05-15
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Using this method can simplify the modeling process of the transformer, but it cannot reflect the hysteresis characteristics of the transformer core in the actual project, which affects the accuracy of the power system simulation to a certain extent. In addition, it cannot simulate the impact of the remanence of the transformer core on the entire power system. influences

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  • Transformer simulation model for accurately simulating characteristics of iron core
  • Transformer simulation model for accurately simulating characteristics of iron core
  • Transformer simulation model for accurately simulating characteristics of iron core

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Embodiment Construction

[0027] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Such as figure 1 As shown, the transformer simulation model for accurately simulating core characteristics of the present invention includes:

[0029] For an ideal transformer, the primary side is connected to the actual circuit through port AB, and the secondary side is connected to the actual circuit through port ab.

[0030] The controllable current source, connected in parallel on the primary side of the ideal transformer, represents the excitation branch of the transformer model, and can output a current of a corresponding magnitude according to the input control quantity, and the positive direction of the current is from A to B.

[0031] The excitation branch control module can measure the voltage V of the ideal transformer primary side in r...

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Abstract

The invention discloses a transformer simulation model for accurately simulating characteristics of an iron core. The model simulates excitation characteristics of the iron core of a transformer through a hysteresis loop, can accurately simulate hysteresis characteristics of the iron core, further improves the accuracy of electromagnetic transient simulation of a power system, and simulates the influence of transformer iron core remanence on the power system by setting an remanence value of the iron core. In addition, the transformer simulation model adopts a current source to simulate an excitation branch of the transformer and does not change a system matrix of simulation software in the simulation process, so that the simulation speed is improved.

Description

technical field [0001] The invention belongs to the technical field of power system simulation, in particular to a transformer simulation model for accurately simulating iron core characteristics. Background technique [0002] Aiming at a series of practical problems in the power system, such as excitation inrush current and inrush current caused by the excitation characteristics of the transformer core, it is necessary to establish an accurate simulation model on the computer to study the mechanism of these problems and the solutions. The accuracy of the power system simulation model in the computer is of great significance to the solution of these practical engineering problems. Therefore, it is necessary to model the excitation characteristics of the transformer core as accurately and completely as possible in the power system simulation software, so as to conduct in-depth mechanism research on the above practical engineering problems and propose a series of effective sol...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 陆翌李继红裘鹏徐政徐雨哲肖晃庆
Owner STATE GRID CORP OF CHINA
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