ELECTRIC POWER SYSTEM OF SHIP

• Main Authors: BANDO SOICHIRO, ONO TATSUYA, TAKEDA KAZUYA, HAMAMATSU MASANORI, HAYASHI MASATO, KUJIME TAISUKE, TOKUYAMA KAZUMA, EZAKI HIDEAKI
• Format: Patent
• Language: English; Japanese
• Published: 10.08.2017
• Subjects: AUXILIARIES ON VESSELS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MARINE PROPULSION OR STEERING; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING

PROBLEM TO BE SOLVED: To achieve power supply to an inboard power by a power storage unit and a load change compensation in a limited space on a ship in an electric power system of a ship.SOLUTION: An electric power system 100 of a ship comprises: a first power storage unit 10; a second power storage unit 20; and a control system 30. The first power storage unit 10 has large energy density larger than that of the second power storage unit 20, and the second power storage unit 20 has large output density larger than that of the first power storage unit 10. The control system 30 makes the first power storage unit 10 discharge electricity with priority relative to the second power storage unit 20 for feeding base power continuously to an inboard power load 60 which is connected to an inboard bus line 50, for application for a power generator, and the control system makes the second power storage unit 20 charge and discharge electricity with priority relative to the first power storage unit 10 for compensating variation of frequency or voltage of an inboard power circuit for application for a circuit stabilization.SELECTED DRAWING: Figure 1 【課題】船舶の電力システムにおいて電力貯蔵装置による船内電力への給電と、負荷変動補償とを、船舶の限られたスペースで両立させることを目的とする。【解決手段】船舶の電力システム１００は、第１電力貯蔵装置１０と、第２電力貯蔵装置２０と、制御システム３０とを備える。第１電力貯蔵装置１０は第２電力貯蔵装置２０よりもエネルギー密度が大きく、第２電力貯蔵装置２０は第１電力貯蔵装置１０よりも出力密度が大きい。制御システム３０は、発電機用途として、船内母線５０に接続された船内電力負荷６０に連続的にベース電力を給電するように第１電力貯蔵装置１０を第２電力貯蔵装置２０より優先的に放電させ、系統安定化用途として、船内電力系統の周波数または電圧変動を補償するように第２電力貯蔵装置２０を第１電力貯蔵装置１０より優先的に充放電させるように構成されている。【選択図】図１