Direct-current voltage receiving end MMC converter station adjusting method and device based on virtual resistor
The invention provides a DC voltage receiving end MMC converter station adjusting method and device based on a virtual resistor, and relates to the field of offshore converter stations, and the method comprises the following steps: adding a virtual resistor on a DC voltage outer loop controller of a...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a DC voltage receiving end MMC converter station adjusting method and device based on a virtual resistor, and relates to the field of offshore converter stations, and the method comprises the following steps: adding a virtual resistor on a DC voltage outer loop controller of an onshore converter station; when the alternating current bus of the onshore receiving end converter station breaks down, the direct current voltage setting value of the onshore receiving end converter station is monitored in real time, and the flexible direct current system carries out an energy storage link; and when the ratio of the direct-current voltage setting value to the direct-current voltage rated value exceeds a preset threshold value, an energy consumption device is put into use, and surplus power is consumed. According to the invention, the energy storage unit in the flexible direct current system can be used as a'container 'to actively recover and temporarily store surplus power, the energy storage un |
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