基于阻抗匹配法的UPQC功率潮流分析

摘要

According to the relationship between impedances,a novel impedance matching analysis method is proposed.The unified power quality conditioner(UPQC) power flow is analyzed by matching the system impedances with grid voltage fluctuation.In essence,the power balance is embodied by the impedance matching which clarifies the physical nature of the entire system operation.The impedance state of system with gird voltage fluctuation is deduced and the system power balance requirements are met by the matched state between impedances.Finally,experimental results prove the correctness of theoretical analysis.%此处从统一电能质量调节器(UPQC)阻抗之间的关系出发,提出了一种新颖的阻抗匹配功率潮流分析法,通过对阻抗的匹配分析来描述电网电压波动时整个系统的功率潮流,即用阻抗的匹配来体现功率的平衡,更加明确了整个系统运行的物理本质.详细的推导出了电网电压波动时系统运行的阻抗状态,以阻抗之间的匹配状态来满足系统功率平衡的要求.最后,通过实验结果证明了理论分析的正确性.