摘要
对不同容量微网逆变器的功率控制策略展开研究。提出适用于不同容量微网逆变器的自适应虚拟阻抗策略,通过有功功率反馈自适应地调节虚拟阻抗取值,使总的线路阻抗比朝接近逆变器容量反比的方向变化。通过理论分析证明,在增加相同虚拟阻抗取值条件下,自适应虚拟阻抗策略相比常规虚拟阻抗策略可以获得更好的功率分配效果。仿真和实验结果验证了理论分析的正确性和有效性。
The power control strategy of microgrid inverters with different capacities is studied.An adaptive virtual impedance strategy applicable to microgrid inverters with different capacities is proposed.The active power feedback is used to adaptively adjust the virtual impedance value to make the total line impedance ratio change in the inverse direction of inverter capacity.Theoretical analysis proves that the adaptive virtual impedance strategy can obtain better power allocation effect compared to the conventional virtual impedance strategy in the condition of increasing the same virtual impedance.Simulative and experimental results verify the correctness and effectiveness of the theoretical analysis.
作者
王逸超
谢欣涛
陈仲伟
肖振锋
徐志强
陈耀红
WANG Yichao;XIE Xintao;CHEN Zhongwei;XIAO Zhenfeng;XU Zhiqiang;CHEN Yaohong(State Grid Hunan Electric Power Company Limited Economical ＆ Technical Research Institute, Changsha 410004, China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2018年第6期29-33,共5页
Electric Power Automation Equipment
关键词
微网
逆变器
有功功率
自适应虚拟阻抗
功率分配
microgrid
electric inverters
active power
adaptive virtual impedance
power allocation
