The hierarchical control strategy based on the concept of cyber physical system for islanded micro-grid with communication data disturbance

Communication data in the communication network of the islanded micro-grid can be disturbed by many methods, such as data attack or packet loss. In order to overtake the communication data disturbance (CDD), a new hierarchical control structure is proposed in the paper. Based on the concept of cyber physical system (CPS), the control structure is divided into two layers: cyber layer and physical layer. In cyber layer, the influence of CDD on the system is analyzed in this paper. A response strategy with back-propagation neural network (BPNN) is proposed in the layer. It's used to complete the data compensate and eliminate the influence. In physical layer, the droop control is used as the primary control to control the voltage and frequency in the micro-grid. And a virtual leader-following consistency protocol is used to complete the new secondary control method which is proposed in the paper. Finally, the MATLAB is used to verify the effectiveness of the control strategy which is presented in the paper.