Research On Microgrid Equivalent Based On Control Strategy Of Muilti-microgrid

The Multi-Microgrid (MMG) operation mode can simplify the controlstrategy of a single Microgrid, and improve the control efficiency of thewhole system. The analysis and control strategy development of MMG ordistribution networks containing Microgrid need the help of simplifiedequivalent model of the Microgrid. However the various types ofMicro-sources and inverter control methods increase the difficulty ofMicrogrid equivalent research. So there is no widely recognizedequivalent model of Microgrid and related researches also rarely considerthe influence of control strategy on the external characteristics ofMicrogrid. Based on this, the main research work lies in the followingfour aspects:1. Study on the control strategy of multi-microgrid and microgrid,control method of micropower and the construction of simulation models,in which external fault has been installed, for the observation ofmicrogrid’s external characteristics appeared in faults situation. 2. Research on power system load modeling theory and thecomposition of load modeling software engineering based onmeasurement method and intelligent algorithm, preparing the interfaceprogramme of data from the programme and simulation, improving theimmune algorithm computing efficiency in the process of parameteridentification and composing dynamic and static load modeling structuredocuments.3. Proposal for non-mechanism dynamic equivalence model based onmicropower control structure, applying non-mechanism modelingthoughts on the power system load model for the research of microgridequivalence model, on the basis of detailed study of micro-grid loopcontrol structure.4. Proposal for mechanism equivalence model based on microgridconstituent elements, which can deal well with multi-distributed poweraccess of distribution network under the premise of not increasingparameter vector size.