Research on the Unity of Electromagnetic Characteristics of Controllable Reactor Based on Transformer Model

被引：0
|
作者：
Wang T. [1 ,2 ,3 ]
Tian M. [1 ,3 ]
Zhang H. [1 ,3 ]
Zhang Y. [1 ,3 ]
机构：
[1] School of Automation & Electrical Engineering, Lanzhou Jiaotong University, Gansu Province, Lanzhou
[2] Shaanxi Railway Institute, Shaanxi Province, Weinan
[3] Gansu Province Engineering Laboratory for Rail Transit Electrical Automation, Lanzhou Jiaotong University, Gansu Province, Lanzhou
来源：
Dianwang Jishu/Power System Technology | 2023年 / 47卷 / 07期
基金：
中国国家自然科学基金;
关键词：
controllable reactor; electromagnetic network; magnetization characteristics; transformer model; winding current;
D O I：
10.13335/j.1000-3673.pst.2022.0752
中图分类号：
学科分类号：
摘要：
As a reactive power compensation electromagnetic device based on the principle of magnetic control, the electromagnetic characteristics of controllable reactor are directly related to the parameter design and operation performance of the whole equipment. In order to study the unity of the electromagnetic characteristics of controllable reactor, based on the transformer model, different types of controllable reactors under different working conditions are simulated in principle by changing its load excitation. The two-dimensional electromagnetic network model of transformer model is established, the general formulas of magnetic flux and winding current of each solving unit are deduced, and the winding current waveform and electromagnetic characteristic curve under different load excitation are obtained. Based on the finite element method, the winding current and magnetization characteristics under different working conditions are simulated and analyzed to verify the above results. Thus, the electromagnetic characteristics of controllable reactor under AC magnetization and AC/DC superposition magnetization under complex working conditions are further analyzed. The results show that the calculation results of winding current and magnetic flux of transformer model under various complex working conditions based on electromagnetic network model are in good agreement with the finite element calculation results. The AC magnetic controllable reactor can change the equivalent permeability of the main magnetic circuit by short circuit at the control side. The excitation source of the DC magnetization controllable reactor is DC voltage source or DC current source. Different controllable reactors under different working conditions are operating in different stages of magnetization curve of ferromagnetic materials. In this paper, the analysis of the electro-magnetic characteristics of controllable reactor is more basic, which is applicable to all controllable reactors based on the principle of magnetic control. Hope to provide some help for the in-depth understanding of controllable reactor and the structural design and optimization of controllable reactor. © 2023 Power System Technology Press. All rights reserved.
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页码：2947 / 2956
页数：9
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