Control method and system for smooth grid-connected and off-grid switching of grid-forming inverter, and medium
The invention relates to a control method and system for smooth grid-connected and off-grid switching of a grid-forming inverter and a medium, and the method comprises the steps: respectively building a mathematical model of a virtual synchronous generator and a mathematical model of a reference pow...
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| creator | ZHANG LIBO DAI QIAN SONG XINLI FANG ZHIJIAN LI DONGSHENG ZHANG JIAN GU WENBO MA XIN MU SHIXIA MA SHIYING ZHAO LEILEI LI XIA XIAO XIONG DAI HANYANG CHEN DIAN WU JUNLING |
| description | The invention relates to a control method and system for smooth grid-connected and off-grid switching of a grid-forming inverter and a medium, and the method comprises the steps: respectively building a mathematical model of a virtual synchronous generator and a mathematical model of a reference power controller for a frequency modulation module in the grid-forming inverter; establishing a discretization model of the virtual synchronous generator in an actual system and a future prediction output model of the system; selecting a target function based on the established mathematical model, discretization model and prediction output model to establish a phase angle pre-synchronization model; and after the phase angle pre-synchronization is carried out on the network-building type inverter based on the phase angle pre-synchronization model, the network-building type inverter solves the target function in the prediction output model so as to realize grid-connected and off-grid switching of the network-building ty |
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establishing a discretization model of the virtual synchronous generator in an actual system and a future prediction output model of the system; selecting a target function based on the established mathematical model, discretization model and prediction output model to establish a phase angle pre-synchronization model; and after the phase angle pre-synchronization is carried out on the network-building type inverter based on the phase angle pre-synchronization model, the network-building type inverter solves the target function in the prediction output model so as to realize grid-connected and off-grid switching of the network-building ty</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER COMPUTING CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY GENERATION PHYSICS SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | Control method and system for smooth grid-connected and off-grid switching of grid-forming inverter, and medium |
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