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根据多微网间的串联和并联组网结构,设计了串、并联不同结构的多微网系统两级分层控制方案。以多微网系统允许出现的有效运行状态为基础,依据其当前状态和触发事件制定微网运行状态的转换。针对多微网系统的联络线功率控制、并网和孤岛模式切换,提出串、并联结构的多微网中央控制器之间的协调配合策略。结合云电科技园智能微网的工程建设,利用MATLAB/Simulink软件搭建串联和并联结构的多微网模型;仿真分析联络线功率调节、不同模式转换和同步过程中微网的动态特性。仿真结果验证了控制策略的正确性和有效性。
According to the serial and parallel networking structure of multi-micro-networks, a two-level hierarchical control scheme of multi-micro-network system with serial and parallel structures is designed. Based on the valid operating conditions allowed by the multi-micro-grid system, the conversion of the operating states of the micro-grids is formulated based on their current status and triggering events. Aiming at the connection line power control, grid connection and islanding mode switching of multi-micro-grid system, the coordinated coordination strategy of multi-micro-grid central controllers with serial and parallel structure is put forward. Combined with the construction of intelligent micro-grid in Yun-electric Science and Technology Park, the multi-micro-grid model of series and parallel structure was constructed by using MATLAB / Simulink software; the dynamic characteristics of micro-grid in power regulation, different mode conversion and synchronization were simulated and analyzed. Simulation results verify the correctness and effectiveness of the control strategy.