摘要
以我国基于级联多电平结构、无串联注入变压器、中压等级的2MVA动态电压恢复器(Dynamic Voltage Restorer,DVR)的示范工程为研究背景,提出并分析了系统的设计方案。基于EMTDC/PSCAD进行了大量数字仿真,结果验证了系统设计方案、控制算法的正确性及有效性。通过对所研制的2kVA六单元级联拓扑物理样机的模拟试验,验证了底层控制策略的正确性。
Based on the first demonstration project of medium voltage level transformerless cascaded multi-level topology Dynamic Voltage Restorer （DVR） in China,the paper puts forward a novel system design scheme,elaborates the each part working principle of the installation and discusses control strategy of an unbalance sag compensation for an enterprise 6kV system based on the proposed cascaded structure.The EMTDC/PSCAD based simulation and the physical experiments on a 2.2kVA DVR prototype were carried out to verify the validity of proposed scheme and control strategy.
出处
《电力电子技术》
CSCD
北大核心
2005年第5期63-65,共3页
Power Electronics
