论文标题
基于大型变压器的Inrush预测,固态INRUSH当前限制器控制器
Solid-State Inrush Current Limiter Controller Based on Inrush Prediction for Large Transformers
论文作者
论文摘要
工业变压器的当前问题有时比公用事业变压器更严重。提出了用于中型电压电源变压器的新固态Inrush电流限制器(SSICL)。 SSICL由三组组成。每个组都包括双向半导体开关和一个Inrush电流限制器电阻。使用基于Kalman滤波的控制策略,在磁化过程中抑制了变压器inrush电流。实际上,根据缓慢的动态卡尔曼滤波器的估计电流规定了inrush电流的构建轮廓。开发和测试了单相原型SSICL。在MATLAB-SIMULINK中模拟了所提出的控制方案。通过使用MATLAB软件的实时(RT)工具箱和PCI_1711U,可以实现SSICL及其控制系统之间的相互关系。进行了一些实验以评估SSICL的性能。结果表明,所提出的SSICL可以大大抑制变压器的Inrush电流
Inrush current problems of the industrial transformers are occasionally more serious than the utility transformers. A new Solid-State Inrush Current Limiter (SSICL) is proposed for medium voltage power transformers. The SSICL consists of three similar sets. Each set includes a bidirectional semiconductor switch and an inrush current limiter resistor. Using a control strategy based on Kalman filtering, transformer inrush current is suppressed during magnetization process. In fact, built up profile of the inrush current is dictated in accordance with the estimated current by a slow dynamic Kalman filter. A single-phase prototype SSICL is developed and tested. The proposed control scheme is simulated in MATLAB-SIMULINK. By using Real Time (RT) toolbox of the MATLAB software and a PCI_1711U, interrelationship between the SSICL and its controlling system is realized. Some experiments are carried out to evaluate the performance of the SSICL. The results show that the proposed SSICL can considerably suppress inrush current of the transformer