Method and device for limiting transient current of grid-forming converter
The invention discloses a method and a device for limiting transient current of a grid-forming converter. The method comprises the following steps: acquiring x-axis components icx (t) and y-axis components icy (t) of injection current of the grid-forming converter; obtaining an injection current amp...
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| creator | LI WENFENG DENG JIAQING CHEN YIJUN DU YI LIAN PANJIE JIANG JINGYA SONG RUIHUA LIU WENZHUO YANG DAYE SUN HUADONG ZHENG CHAO LYU SIZHUO |
| description | The invention discloses a method and a device for limiting transient current of a grid-forming converter. The method comprises the following steps: acquiring x-axis components icx (t) and y-axis components icy (t) of injection current of the grid-forming converter; obtaining an injection current amplitude Ic according to the x-axis component icx (t) and the y-axis component icy (t) of the injection current; and if the amplitude Ic of the injection current is greater than the allowable extreme value current Iclim, introducing an amplitude compensation amount delta Ec and a power angle compensation amount delta delta c of the internal potential to compensate the amplitude and the power angle of the internal potential of the grid-forming converter respectively, so that the compensated internal potential vector is located in a current safety domain. According to the method and the device provided by the embodiment of the invention, simple and flexible current limiting can be realized, and the requirements of a co |
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The method comprises the following steps: acquiring x-axis components icx (t) and y-axis components icy (t) of injection current of the grid-forming converter; obtaining an injection current amplitude Ic according to the x-axis component icx (t) and the y-axis component icy (t) of the injection current; and if the amplitude Ic of the injection current is greater than the allowable extreme value current Iclim, introducing an amplitude compensation amount delta Ec and a power angle compensation amount delta delta c of the internal potential to compensate the amplitude and the power angle of the internal potential of the grid-forming converter respectively, so that the compensated internal potential vector is located in a current safety domain. 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The method comprises the following steps: acquiring x-axis components icx (t) and y-axis components icy (t) of injection current of the grid-forming converter; obtaining an injection current amplitude Ic according to the x-axis component icx (t) and the y-axis component icy (t) of the injection current; and if the amplitude Ic of the injection current is greater than the allowable extreme value current Iclim, introducing an amplitude compensation amount delta Ec and a power angle compensation amount delta delta c of the internal potential to compensate the amplitude and the power angle of the internal potential of the grid-forming converter respectively, so that the compensated internal potential vector is located in a current safety domain. 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The method comprises the following steps: acquiring x-axis components icx (t) and y-axis components icy (t) of injection current of the grid-forming converter; obtaining an injection current amplitude Ic according to the x-axis component icx (t) and the y-axis component icy (t) of the injection current; and if the amplitude Ic of the injection current is greater than the allowable extreme value current Iclim, introducing an amplitude compensation amount delta Ec and a power angle compensation amount delta delta c of the internal potential to compensate the amplitude and the power angle of the internal potential of the grid-forming converter respectively, so that the compensated internal potential vector is located in a current safety domain. According to the method and the device provided by the embodiment of the invention, simple and flexible current limiting can be realized, and the requirements of a co</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY |
| title | Method and device for limiting transient current of grid-forming converter |
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