Operation optimization method for LNG (Liquefied Natural Gas) receiving station

Abstract

The invention provides an operation optimization method for a LNG (Liquefied Natural Gas) receiving station, and relates to the field of information automation. The method comprises the following steps that: obtaining the related parameter of the LNG receiving station, and triggering the working situation model module of the operation equipment of the LNG receiving station in fixed time to obtaina working condition model corresponding to each piece of equipment; constructing the integral optimal scheduling model of the LNG receiving station on the basis of each working condition model, and carrying out optimal solving on the integral optimal scheduling model of the LNG receiving station to obtain a scheduling scheme after the LNG receiving station is optimized; and on the basis of the scheduling scheme, scheduling the LNG receiving station. By use of the method, the integral optimal scheduling model of the LNG receiving station is established, on the premise of meeting the external output plane of natural gas, the optimal scheduling scheme is automatically given by taking the minimum total production cost of the operating system of the LNG receiving station as a target, the scheduling economy of the operating system of the LNG receiving station is improved, the targets of energy saving, emission reduction, cost reduction and synergy of an enterprise are realized, and the problem brought by artificial subjectivity and insufficient experience of scheduling personnel is avoided to a certain degree.

Description

technical field [0001] The invention relates to the field of information automation, in particular to an operation optimization method for an LNG receiving station. Background technique [0002] LNG is the abbreviation of liquefied natural gas (liquefied natural gas). Natural gas is a combustible gas extracted naturally in the gas field, mainly composed of methane. LNG receiving station refers to the production unit that stores liquefied natural gas and then transports natural gas outside. The LNG receiving station receives LNG from the LNG ship and stores it in the LNG storage tank. The LNG in the storage tank is gasified into gaseous natural gas and distributed to downstream users. [0003] At present, the dispatching systems of most domestic LNG receiving stations generally have the following problems: [0004] 1) The dispatcher mainly dispatches production based on experience, and often only considers meeting the load requirements of the natural gas pipeline network, a...

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Problems solved by technology

[0004] 1) Scheduling staff mainly dispatches production based on experience, and often only considers meeting the load requirements of the natural gas pipeline network, and does not consider how to minimize production costs under the premise of meeting production requirements from an economical point of view;

[0005] 2) The equipment of the LNG production system often deviates from its original working condition after running for a period of time, or after maintenance and transformation, and it is sometimes difficult for dispatchers to detect this difference

If the dispatcher schedules according to the original dispatching habits, it often leads to unreasonable dispatching

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