摘要可变频变压器(Variable Frequency Transformer,VFT)是一种新颖的、性能良好的异步联网装置。介绍VFT的基本结构,分析VFT异步联网的基本原理,在PSCAD/EMTDC中建立基于VFT的异步联网等值系统模型。仿真结果表明,VFT能够平稳地连接两个频率不同的电网,且具有良好的故障隔离作用。
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