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电网技术  2015 

储能型功率补偿系统的控制及其储能元件参数设计

DOI: 10.13335/j.1000-3673.pst.2015.02.042, PP. 568-574

Keywords: 柴油发电机组,超级电容,功率补偿,参数设计

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Abstract:

为优化柴油发电机组(dieselgenerator,DG)的动态输出电能质量,将包含超级电容(supercapacitor,SC)的储能型功率补偿系统(storageenergy-powercompensationsystem,SE-PCS)与DG相并联共同为负载供电。提出用于SE-PCS的基于e指数函数的动态参考有功功率生成方案。在负载突变时,由SE-PCS按照e指数函数短时输出有功功率以提高DG的动态输出性能。给出了e指数函数的初值、时间常数以及SC容值的设计原则。进一步分析了SC内阻对SC输出电压范围的影响,进而给出了新的保持SC输出电压范围不变的SC容值设计原则,以保持系统的安全可靠运行。相应的仿真结果证明了所提出的方案、控制策略及参数设计原则的正确性和有效性。

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