DC POWER SUPPLY SYSTEM FOR NUCLEAR POWER PLANT

PROBLEM TO BE SOLVED: To provide a direct-current (DC) power supply system for a nuclear power plant to efficiently supply DC power to a short-time power supply load and to a long-time power supply load by switching between power-supply object loads corresponding to the discharge characteristics of...

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Hauptverfasser:	KAMODA FUMINAO, FUKUOKA TOMOYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER 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 NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR POWER PLANT PHYSICS 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:	PROBLEM TO BE SOLVED: To provide a direct-current (DC) power supply system for a nuclear power plant to efficiently supply DC power to a short-time power supply load and to a long-time power supply load by switching between power-supply object loads corresponding to the discharge characteristics of respective power storage devices. SOLUTION: This DC power supply system comprises the plurality of power storage devices 2 and 5 different in discharge characteristics and a supply-source switching device 7 as power storage devices for supplying power to DC-driven loads. Switching is performed on the switching device 7 correspondingly to discharge time. After a commercial power source is lost, power is supplied from the storage device 5 excelling in short-time discharge characteristics for a short and definite period of time. For a definite period of time after switching takes place in power supply devices, power is supplied from the storage device 2 excelling in long-time discharge characteristics. COPYRIGHT: (C)2005,JPO&NCIPI