摘要
文章针对不同类型的微电源,在孤岛运行时对负荷变化敏感、抗扰动能力弱等问题,提出对本地节点电压和母线电压的分段控制策略。分析了直流微电网的动态运行特点,并据此设立电压的稳定性阈值。以随机性输出电源和储能设备作为互补性单元,与确定性可控电源在不同暂态状况下共同对系统电压进行协调控制,实现其离网状态功率的平衡恢复及整体稳定。利用Matlab/Simulink建立仿真模型,仿真结果表明了此控制策略的有效性。
According to the load sensitivity and poor disturbance rejection of DC microgrid in the island mode, a segmentation control strategy for the nodal voltage and bus voltage is presented, which combines different types of micro-sources. The dynamic operation characteristic of the DC microgrid is analyzed, and the voltage threshold of stability is built based on that. The deterministically controllable powers, which combine the randomness sources and storage equipments as the complementary unit, coordinately control the system voltage in the different transient condition and keep the power balance and stability of the off-grid microgrid. The software Matlab/Simulink is utilized to build the verifiable model, and the results show the efficiency of the control strategy.
出处
《可再生能源》
CAS
北大核心
2013年第5期29-33,共5页
Renewable Energy Resources
基金
四川省科技支撑项目(2011fz003)
(2012FZ0047)
成都市科技局高校成果转化项目(11DXYB004JH-027)
(12DXYB279)
四川大学海外引进人才计划项目(yj2010011)