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针对小型微电网,提出了单刀双掷开关和快速储能等集成安装在微电网公共连接点处的方案。在此基础上,提出微源综合并网控制模型和基于本地信息的自我决策模型(快速储能模型、后备电源模型),实现了响应速度快但容量较小的快速储能与容量较大但响应速度较慢(或需要一定启动时间)的后备电源之间不依赖于通信的多源协调控制。利用PSCAD/EMTDC软件建立了仿真系统,以超级电容(作为快速储能)和微型燃气轮机(作为后备电源)为例对所提控制策略进行了验证,实现了微源在微电网进入孤岛过程中的主动控制及在孤岛运行模式下的自治运行。
For small microgrids, solutions are proposed that are integrated and installed at the common connection point of microgrids, such as single-pole double-throw switch and rapid energy storage. On this basis, we put forward the micro-grid integrated grid control model and the self-decision model based on local information (fast energy storage model and back-up power supply model), which has the advantages of fast response but small capacity, rapid energy storage and large capacity Slow response (or need a certain start-up time) backup power does not depend on the communication between the multi-source coordination control. The simulation system was established by using PSCAD / EMTDC software. The super capacitor (as a fast energy storage) and the micro gas turbine (as a backup power) were used as an example to verify the control strategy and to achieve the micro-source in the micro-grid into the island process Active Control and Autonomous Operation in Isolated Island Operation Mode.