The Model Of Complementary Energy Based On PSCAD And The Research Of Its Control Strategy

Energy of the Internet as a future development direction of global energy,it requires a two-way flow of energy,all of the individual is not only the power of the user,and power producers,and can direct relationship between them,so as to fundamentally change now,lose,and match,use the link configuration.This determines the distributed power supply and micro power grid will be widely used,energy storage technology is to coordinate the application of crucial one annulus.Micro power grid system for the energy storage device is required.Large energy density,high power density,quick response speed,high efficiency of energy storage.This article research goal is to have fast response and large capacity storage characteristics of energy storage device coordination control,establish complementary energy storage system,in order to make the micro grid for better performance and higher economical efficiency index.Specific work is:based on the electromagnetic transient simulation software(Power Systems Computer Aided Design,PSCAD)platform to build a distributed Power supply simulation model,including photovoltaic array,fan electricity generation,the micro gas turbine system.Set the energy storage device simulation model,including the battery and super capacitor.Complementary energy storage of the corresponding control strategy is designed.Through the simulation of micro power grid in parallel operation mode,the isolated net running mode and the parallel operation into the isolated net running mode dynamic operation characteristics of micro power grid,the power of distributed power supply,the change rule of the network voltage and frequency,and then studies the distributed energy storage system for micro network running mechanism.The simulation results show that the complementary formed in access to super capacitor energy storage system,micro power grid's ability to adjust itself has been effectively improved,the super capacitor compensates for the battery reaction speed is slow,short put the defect of electricity shortage,achieve the goal of the complementary energy storage.