摘要
提出一种基于微调虚拟阻抗并采用下垂控制实现功率均分的控制方案;低压微电网中传输线阻抗呈阻性,忽略其感性成分,孤岛模式下,根据各分布式发电单元(DG)的线路电阻和输出功率值,自适应计算出微调虚拟电阻,使各DG的微调虚拟电阻与线路电阻之和相等,输出的有功功率和无功功率均达到均分效果;该控制策略已由仿真和实验验证其可行性。
The power sharing scheme using fine-tune virtual resistance is put forward in this paper, ignoring the line reactance in the low-voltage microgrid, which calculates fine-tune virtual resistances according to the values of line resistance and output powers in the islanding mode. Therefore, the summations of the virtual resistance and the line resistance of each DG are equal; as a result, the output active power and reactive power are sharing reasonable. The feasibility of proposed control strategy has been verified in simulation and experimental platform based on DSP TMS320F2812.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2015年第5期1162-1170,共9页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51077112)
河北基金(E2012203163)
关键词
微电网
微调虚拟阻抗
低压微电网
功率均分
microgrid
fine-tune virtual impedance
low-voltage microgrid
power sharing
