电感式饱和铁心故障限流器性能的有限元分析

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI:10.1109/ICEPE-ST.2011.6123006

Y. Shahbazi, K. Niayesh, H. Mohseni

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引用次数: 7

摘要

由于电网互连程度的提高和新电厂使用的增加，电力系统中的故障电流水平不断上升。处理这个问题的一个可行的解决方案是使用故障限流器(FCL)来减少短路电流。fcl可分为三大类:被动、固态和混合fcl。无源fcl具有对故障固有反应的优点，不需要故障检测和触发电路。基于磁芯饱和的电感式fcl就属于这一类。本文利用多物理场仿真工具COMSOL获得了感应饱和铁芯FCL故障前后的磁通密度分布，并利用COMSOL和Matlab得到了钢-1008铁芯的ψ-I曲线。在EMTP中分析了FCL对电路的影响，发现故障电流明显减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Finite element methode analysis of performance of inductive saturable-core fault current limiter

Due to the increased interconnection of networks and the growth in the use of new power plants, fault current levels in power system continue to rise. One of the viable solutions for handling this issue is the use of fault current limiters (FCL) to reduce the short circuit current. FCLs can be classified in three groups: passive, solid-state and hybrid FCLs. Passive FCLs have merit to inherently react on a fault, requiring no fault detection and triggering circuit. Inductive FCLs based on core saturation belong to this group. In this paper, magnetic flux density distribution in inductive saturable core FCL has been obtained before and after fault using a multiphysics simulation tool (COMSOL) and ψ-I curve has been obtained for steel-1008 core with COMSOL and Matlab. FCL effects on circuit have been analyzed in EMTP and it has been observed that the fault current will decrease significantly.

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2011 1st International Conference on Electric Power Equipment - Switching Technology

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