Design and Simulation of Hierarchical Automation Control Strategy for Island Microgrid
In order to make the actual amplitude of node voltage in power network organization lower than the preset amplitude and avoid power waste,the layered automation control strategy of isolated island microgrid is studied.Based on the closed-loop structure of feedback controller,a complete power equation of island node is established,and the power flow of island microgrid is calculated according to the numerical results of load flow.Based on the power frequency,voltage difference and current difference,the control ability of microgrid host to transmit power signal is analyzed,and the hierarchical automatic control method of isolated island microgrid is designed.Experimental results:With the application of hierarchical automatic control strategy,the actual amplitude level of the node voltage of the power network organization can be well controlled under the conditions of low voltage(100-300 V),medium voltage(500-700 V)and high voltage(900-1 100 V),and its performance value is always lower than the preset node voltage amplitude.It has certain application value in controlling electrical signal consumption.
isolated island microgridautomatic controlfeedback controllernode power equationtidal current volumevoltage amplitude
万方数据
维普
