靜止無功發生器在軋機供電系統中的應用分析

摘要：鋼鐵行業軋機系統無功量變化大，功率因數變化快，同時諧波含量大，主要以5 次、7 次為主，低壓側無源設備(FC 及SVC) 補償效果差，而SVG（靜止無功發生器）作為有源型補償裝置，可以完全替代傳統的無源補償設備，不僅能提高功率因數，而且能濾除諧波，可以達到很好的效果。 敘詞：軋機，諧波及無功，SVG（靜止無功發生器） Abstract：In steel industry, the rolling mill system suffers rapid change in reactive power and power factors, and meanwhile, it containssignificant harmonic, mainly with 5 times or 7 times. Passive facilities (i.e. FC and SVC) over the low voltage side have a poorcompensation effect. As an active compensation tool, SVG(Static Var Generator) can fully replace the traditional passive compensationfacilities and achieve a better function, which can not only improve power factor, but also filter harmonic. Keyword：In steel industry, the rolling mill system suffers rapid change in reactive power and power factors, and meanwhile, it containssignificant harmonic, m