电力系统保护与控制Issue(9)：1-8,8.
交直流混合微电网运行控制策略研究
Research on control strategy of hybrid AC/DC microgrid
摘要
Abstract
To solve the problems of hybrid AC/DC microgrid power fluctuations, power balance between the AC and DC systems, and low PV utilization because of relatively large DC side power load ratio, this paper proposes that in grid-connected operation,under the stabilizing role of the battery, the DC side outputs photovoltaic power into the grid constantly through the AC side to improve the DC side photovoltaic utilization. In islanded operation,the battery as the balance nodes maintains the entire system voltage, frequency stability, and achieves the power balance between the AC and DC systems with the bi-directional AC/DC converter.Finally the PSCAD/EMTDC software is used for the simulation of system power fluctuations, grid-connected operation switching to non-program islanded operation, and islanded operation switching to grid-connected operation, the result shows that the control scheme can effectively stabilize the system power fluctuations and maintain the hybrid AC/DC microgrid stable operation.关键词
交直流混合微电网/光伏发电/蓄电池储能/功率平衡Key words
hybrid AC/DC microgrid/photovoltaic power generation/battery energy storage/power balance分类
信息技术与安全科学引用本文复制引用
丁明,田龙刚,潘浩,张雪松,周金辉..交直流混合微电网运行控制策略研究[J].电力系统保护与控制,2015,(9):1-8,8.基金项目
国网浙江省电力公司项目(5211011306z6) （5211011306z6）
