Distinguishing Magnetizing Inrush Based on Characteristic of Excitation Inductance

康小宁; 何璐; 焦在滨; 索南加乐; 王桂林

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Distinguishing Magnetizing Inrush Based on Characteristic of Excitation Inductance

更新时间：2025-12-08

- Distinguishing Magnetizing Inrush Based on Characteristic of Excitation Inductance
- Vol. 41, Issue 10, Pages: 1214-1218(2007)
- 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： TM41;TM772
- Online First：10 October 2007，
  
  Published：2007
- 稿件说明：
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康小宁, 何璐, 焦在滨, et al. Distinguishing Magnetizing Inrush Based on Characteristic of Excitation Inductance[J]. 2007, 41(10): 1214-1218.
DOI：

康小宁, 何璐, 焦在滨, et al. Distinguishing Magnetizing Inrush Based on Characteristic of Excitation Inductance[J]. 2007, 41(10): 1214-1218. DOI：

摘要

对基于励磁电感参数识别的变压器励磁涌流判别方法进行了研究

指出其不能直接应用于电流互感器接于绕组外侧三相变压器的局限性.针对这一问题

提出了一改进算法

使此原理不仅可以应用于单相变压器和能直接测量三角形接线侧绕组相电流的三相变压器

而且也可以直接应用于三角形接线侧电流互感器接于绕组外的三相变压器

并通过动模试验验证了该方法的正确性与判据的有效性.仿真结果表明

改进的保护算法能够快速有效地进行励磁涌流和内部故障电流的识别

算法本身稳定

在内部故障时具有较高的灵敏度.

Abstract

A transformer protection algorithm based on the characteristic of excitation inductance is unable to apply to Y-△ transformer

if the current inner the △ windings is difficult to measure. Thus an improved algorithm for evaluating inner △ windings via measured current outer △ windings is proposed

which makes it feasible to use on both single-phase transformer and Y-△ three-phase transformer. Simulation results verify validity and effectivity.

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references

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