中文摘要：

传统电炉变压器中复杂的调压绕组和分接头的频繁动作会严重影响供电可靠性、降低其使用寿命,还会给电网电能质量以及工艺生产质量带来不利影响。提出了一种新型电子调压电炉变压器,利用含有高压绕组、工作绕组和控制绕组的三绕组变压器,以及3个相互配合的变换器,对工作绕组输出进行调节,可省略或者大幅减少分接头,同时实现输出电压连续调节,因而可大幅提高供电可靠性和供电电能质量。详细分析了电子调压电炉变压器的拓扑结构,提出了相应的协调控制策略。仿真结果表明了所提电子调压电炉变压器具有良好的性能。

英文摘要：

The complex voltage-regulating winding and frequent tap changer adjusting of traditional furnace transformer have serious impacts on power supply reliability,reducing its service life and bring adverse effects on power quality and production quality. A novel electronic voltage-regulating furnace transformer is proposed,which adjusts the output of work winding by transformer with high voltage winding,work winding and control winding and three interoperable converters. In this way,the tap changers can be removed or greatly decreased,and the output voltage adjusted continuously,thereby the reliability and quality of power supply are greatly improved. The topology structure of the electronic voltage-regulating furnace transformer is analyzed in detail and its coordination control strategy is proposed. Simulative results show that the proposed electronic voltage regulating furnace transformer has good performance.