Title:
SYSTEM AND METHOD FOR DERIVING STORAGE TANK OPERATION PLAN
Document Type and Number:
WIPO Patent Application WO/2013/061883
Kind Code:
A1
Abstract:
The purpose of the present invention is to derive a feasible solution to a problem of establishing an operation plan for storage tanks for storing liquefied natural gas, which is a complex mixed-integer nonlinear problem. Assuming that initial tank-state information, receiving schedule information, and feeding schedule information are given, two processing are executed alternately two or more times, namely, a first solving processing wherein a mixed-integer nonlinear planning problem is solved by replacing the mixed-integer nonlinear planning problem with a mixed-integer linear planning problem by executing linear approximation of nonlinear formats for nonlinear constraints that include the nonlinear formats, and a temporary solution or a final solution is derived for a reception pattern that prescribes a storage tank that is to be the receiving tank of liquefied natural gas and a discharging pattern that prescribes a storage tank that is to discharge liquefied natural gas, and a second solving processing wherein a mixed-integer nonlinear planning problem is solved by replacing the mixed-integer nonlinear planning problem with a continuous nonlinear planning problem by fixing discrete variables temporarily for discrete constraints that include the discrete variables, and a temporary solution or a final solution is derived for transitions in the amount of liquefied natural gas and the amount of heat stored in each of the storage tanks.
Inventors:
TSUZAKI KENJI (JP)
KAWAMOTO KAORU (JP)
OKAMURA TOMOHITO (JP)
TANI HIROMASA (JP)
UEDA TOMOKAZU (JP)
HASHIMOTO NOBUAKI (JP)
KAWATA KEISUKE (JP)
TANABE TAKAHITO (JP)
HARADA KOUHEI (JP)
NITANDA ATSUSHI (JP)
NITTA TOSHIHIRO (JP)
KAWAMOTO KAORU (JP)
OKAMURA TOMOHITO (JP)
TANI HIROMASA (JP)
UEDA TOMOKAZU (JP)
HASHIMOTO NOBUAKI (JP)
KAWATA KEISUKE (JP)
TANABE TAKAHITO (JP)
HARADA KOUHEI (JP)
NITANDA ATSUSHI (JP)
NITTA TOSHIHIRO (JP)
Application Number:
PCT/JP2012/077102
Publication Date:
May 02, 2013
Filing Date:
October 19, 2012
Export Citation:
Assignee:
OSAKA GAS CO LTD (JP)
International Classes:
G06F19/00; B65G61/00; F17C6/00; F17C9/02; G06Q50/06
Foreign References:
| JP2010523924A | 2010-07-15 | |||
| JP2003130296A | 2003-05-08 | |||
| JP2005263486A | 2005-09-29 | |||
| JP2005263486A | 2005-09-29 |
Other References:
YOICHI TANAKA ET AL.: "Optimal Design of Cogeneration Systems by Mathematical Programming", SYSTEMS, CONTROL AND INFORMATION, vol. 52, no. 7, 15 July 2008 (2008-07-15), pages 201 - 210, XP055148959
GIACOMO NANNICINI ET AL.: "Rounding- based heuristics for nonconvex MINLPs", MATHEMATICAL PROGRAMMING COMPUTATION, 1 September 2011 (2011-09-01), XP055148961, Retrieved from the Internet [retrieved on 20121107]
See also references of EP 2772866A4
GIACOMO NANNICINI ET AL.: "Rounding- based heuristics for nonconvex MINLPs", MATHEMATICAL PROGRAMMING COMPUTATION, 1 September 2011 (2011-09-01), XP055148961, Retrieved from the Internet
See also references of EP 2772866A4
Attorney, Agent or Firm:
MASAKI, YOSHIFUMI (JP)
Yoshifumi Masaki (JP)
Yoshifumi Masaki (JP)
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Claims: