Ventilation Structure Improvement of Reactor Based on Coupled Field Numerical Analysis

ZHANG Yujiao; QIN Weinan; LIU Wenjun

doi:10.13296/j.1001-1609.hva.2014.08.019

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Ventilation Structure Improvement of Reactor Based on Coupled Field Numerical Analysis

更新时间：2025-04-26

- Ventilation Structure Improvement of Reactor Based on Coupled Field Numerical Analysis
- High VoltageApparatus Vol. 50, Issue 8, Pages: 62-67(2014)
- 作者机构：
  
  1. 三峡大学电气与新能源学院
  2. 奉化市供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.08.019
  CLC： TM47
- Published：2014
- 稿件说明：
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[1]张宇娇,秦威南,刘文俊.基于耦合场数值计算的电抗器通风结构改进[J].高压电器,2014,50(08):62-67.

ZHANG Yujiao, QIN Weinan, LIU Wenjun. Ventilation Structure Improvement of Reactor Based on Coupled Field Numerical Analysis[J]. High voltageapparatus, 2014, 50(8): 62-67.
[1]张宇娇,秦威南,刘文俊.基于耦合场数值计算的电抗器通风结构改进[J].高压电器,2014,50(08):62-67. DOI： 10.13296/j.1001-1609.hva.2014.08.019.

ZHANG Yujiao, QIN Weinan, LIU Wenjun. Ventilation Structure Improvement of Reactor Based on Coupled Field Numerical Analysis[J]. High voltageapparatus, 2014, 50(8): 62-67. DOI： 10.13296/j.1001-1609.hva.2014.08.019.

摘要

干式空心电抗器作为电力系统中的广泛使用的电气设备

起着协调系统无功平衡、限制过电压、限制短路电流和平波等作用。在实际运行过程中

电抗器往往会因为外部环境、自身结构等原因产生局部过热、绝缘老化甚至烧损等现象。笔者以某可控高压并联电抗器二次侧辅助电抗器为研究对象

通过建立场—路耦合模型计算了该干式空心电抗器各个包封绕组产生的焦耳热生成率

以此作为流场—温度场有限元分析的输入

求解出了电抗器的温度场分布。针对电抗器局部温升偏高的计算结果

对通风结构做出了改进并进行了验算。计算结果表明

结构改进后的电抗器温升明显降低

研究结果能够为电抗器的设计和结构优化提供参考。

Abstract

The reactor is one of the important electrical equipment in power system

which are employed to compensate reactive power capacity

suppress overvoltage

limit short-circuit current and smoothing ripple current. In practical applications

air-core reactors are prone to faults

including overheating

insulation aging and burning caused by operation environment and their structure. In this paper

the temperature rise in a dry-type air-core reactor is analyzed. The Joule’s losses calculated by coupled magnetic field-circuit analysis are used as the input for the thermal field by finite-element analysis

which is directly coupled with fluid analysis. Finally

the temperature distributions of reactor can be calculated.For the result of high local temperature rising

a method of structure improvement is proposed. Result shows that the temperature is reduced. Therefore

the thermal performance analysis of air-core reactor could be conducted in the early design stage to guarantee the insulation material requirements.

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