造纸工厂的电压暂降治理技术研究

Research on Voltage Sag Treatment Technologies in Papermaking Mills

关键词:  造纸工厂  电压暂降  动态电压恢复器  复合控制策略

Key Words:papermaking mills  voltage sag  dynamic voltage restorer  compound control strategy

摘要:针对造纸工厂中的电压暂降问题，结合治理需求，以动态电压恢复器为切入点，围绕改进型比例谐振复合控制策略展开研究。通过Matlab/Simulink平台进行仿真实验，研究电压暂降治理技术，实现对造纸工厂电压暂降的有效补偿。本课题设计的动态电压恢复器从电网侧获取能量而无需额外的储能装置，控制分裂电容三相桥式逆变器分相输出补偿电压，治理包括三相不平衡在内的多种电压暂降故障。

Abstract:Aiming at the problems of voltage sag in papermaking mills， combined with the treatment requirements， the dynamic voltage restorer was taken as entry point and the improved proportional resonance compound control strategy was studied. Through Matlab/Simulink platform， the effective compensation for voltage sag in papermaking mills was realized. In this study， the dynamic voltage restorer designed could obtain energy from the power grid without additional energy storage devices. In addition， the three-phase bridge inverter with split capacitor was controlled to output the compensation voltages in separate phase. As a result， the various voltage sag faults including three-phase unbalance were treated effectively.