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    • 4. 发明公开
    • NATURAL GAS LIQUEFACTION PLANT, AND POWER SUPPLY SYSTEM, CONTROLLER AND OPERATING METHOD THEREOF
    • ERDGASVERFLÜSSIGUNGSANLAGEUND STRMVERSORGUNGSSYSTEM,STEUERGERÄTUND BETRIEBSVERFAHRENDAFÜR
    • EP2072609A1
    • 2009-06-24
    • EP07742689.8
    • 2007-04-27
    • Hitachi Ltd.
    • MYOREN, ChihiroHORITSUGI, Mutsumi,MARUSHIMA, Shinya,
    • C10L3/06F02C6/00F02C6/18F02C9/46F25J1/00
    • F25J1/0022F01D15/005F01K15/00F01K23/101F02C6/18F02C9/46F25J1/0284F25J1/0298F25J2230/22F25J2240/70F25J2240/82F25J2280/20Y02E20/16
    • This invention provides a natural gas liquefaction plant including: a liquefying apparatus 11 that liquefies a natural gas 111 by heat exchange with refrigerants 135, 145, 155; refrigerant compressors 13, 14, 15 that compress the refrigerants 134, 144, 154 supplied to the liquefying apparatus 11; motors 131, 141, 151 that drive the refrigerant compressors 13, 14, 15; normally active power generator equipment sets 21-25 and standby power generator equipment 25, both kinds of power generator equipment being adapted to generate electric power for driving the motors 131, 141, 151; and a control apparatus 40 which, if one of the normally active power generator equipment sets 21-24 (e.g., the power generator equipment set 24) comes to an operational stoppage, increases output levels of the normally active power generator equipment sets 21-23 other than the power generator equipment whose operation has stopped, and starts the standby power generator equipment 25. This configuration allows the plant to suppress decreases in a supply rate of electric power due to an operational stoppage of turbine power generator equipment.
    • 本发明提供一种天然气液化装置,包括:液化装置11,其通过与制冷剂135,145,155的热交换液化天然气111; 制冷剂压缩机13,14,15,压缩供应到液化装置11的制冷剂134,144,154; 驱动制冷剂压缩机13,14,15的马达131,141,151; 通常有功发电机组21-25和备用发电机设备25,两种发电机设备适于产生用于驱动电动机131,141,151的电力; 以及控制装置40,如果正常工作的发电机组21-24(例如,发电机组24)中的一个达到运行停止,则增加正常有功电力发电机组21-23的输出电平 除了运行停止的发电机设备之外,还启动备用发电机设备25.这种配置允许工厂抑制由于涡轮发电机设备的操作停止而导致的电力供应速率的降低。