MMC type high voltage DC power transmission (HVDC) DC side power supply system

The invention provides an MCC type high voltage DC power transmission (HVDC) DC side power supply system, comprising two groups of HVDC modules which are connected to the two ends of a high voltage three phase wire; two capacitors C1 are connected in parallel between the two groups of HVDC modules;...

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Bibliographische Detailangaben
Hauptverfasser:	LI JIN'GANG, YANG BO, SU ZHONGLAI, YANG YONG, ZHANG JINGGANG, ZENG GUANG
Format:	Patent
Sprache:	eng
Schlagworte:	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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION SYSTEMS FOR STORING ELECTRIC ENERGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	The invention provides an MCC type high voltage DC power transmission (HVDC) DC side power supply system, comprising two groups of HVDC modules which are connected to the two ends of a high voltage three phase wire; two capacitors C1 are connected in parallel between the two groups of HVDC modules; each group of the HVDC module comprises three link module strings; each group of the link module strings comprises two link modules which are connected in series; two inductors L are connected in series between the two links modules; a node is positioned between the two inductors L; the ends of the link modules which are not connected to the inductors L are connected together; and three nodes in each HVDC module are connected to the high voltage three phase wire in series. The MMC type high voltage DC power transmission (HVDC) DC side power supply system solves the problem that the MMC type HVDC is not easily designed and thus the unit is not easily powered because of the limitation on the price and the volume of the high resistance transformer in the process of realizing the N+2 redundancy operation of the module unit.