On-Line Identification Algorithm for Transformer Leakage Inductance

高晶; 王建华; 张保会; 郝治国; 邵博

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On-Line Identification Algorithm for Transformer Leakage Inductance

更新时间：2025-12-08

- On-Line Identification Algorithm for Transformer Leakage Inductance
- Vol. 42, Issue 2, Pages: 199-203(2008)
- 作者机构：
  
  西安交通大学电气工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM771
- Online First：10 February 2008，
  
  Published：2008
- 稿件说明：
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高晶, 王建华, 张保会, et al. On-Line Identification Algorithm for Transformer Leakage Inductance[J]. 2008, 42(2): 199-203.
DOI：

高晶, 王建华, 张保会, et al. On-Line Identification Algorithm for Transformer Leakage Inductance[J]. 2008, 42(2): 199-203. DOI：

摘要

利用变压器等值回路平衡方程原理

提出了利用加权递推最小二乘法的变压器漏电感参数辨识方法

给出了变压器漏电感参数辨识的等效模型

对变压器模型参数辨识的可行性进行研究

针对不同的情况

分别提出了归算到一次侧的变压器绕组参数辨识方法及变压器原副边漏电感参数辨识方法.利用动模实验数据对变压器漏电感参数辨识的结果表明

参数辨识算法稳定

不受负荷波动以及功率因数变化的影响

辨识结果具有较高的精度.

Abstract

Leakage inductance is one of the primary parameters in transformer relay protection and on-line monitoring technology. An online identification algorithm for transformer leakage inductance is proposed with recursive weighted least-square algorithm. The equivalent circuit equation of the transformer is achieved to derive the model identifying the leakage inductance. Through analyzing the identifiability of transformer model

two different methods are presented for the identification of resistance and leakage inductance parameters. The experimental transformer circuit model is designed to verify the online identification algorithm. The dynamic test shows that this algorithm is stable and imperious to the fluctuation of loads or power factor

and the identification results have a higher accuracy.

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references

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熊小伏,邓祥力,游波.基于参数辨识的变压器微机保护[J].电力系统自动化,1999,23(11): 18-21.

XIONG Xiaofu,DENG Xiangli,YOU Bo. Transformer protection using parameter identification method [J]. Automation of Electric Power Systems,1999,23(11):18-21.

侯媛彬,汪梅,王立琪.系统辨识及其MATLAB仿真[M].北京:科学出版社,2004.

KUMAR R. Simultaneous adaptive control and identification via the weighted least-square algorithm[J]. IEEE Trans on Automat,1984,29(3):259-263.

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韩崇昭,王月娟,万百五.随机系统理论[M].西安:西安交通大学出版社,1987.

高仕斌, 王果. 变压器绕组变形在线检测方法的改进[J]. 高电压技术, 2002, 28(9):31-33.

GAO Shibin,WANG Guo. Research on on-line monitoring of winding deformation of power transformer[J]. High Voltage Engineering,2002,28(9):31-33.

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