| CPC F25J 3/0695 (2013.01) [F25J 3/061 (2013.01)] | 6 Claims |
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1. An operation analysis method for a natural gas plant, the natural gas plant is configured to produce a product from natural gas, the operation analysis method comprising:
acquiring production amount data per unit time of the product and operation data of a plurality of controlled devices, which form the natural gas plant and each of the plurality of controlled device is subjected to operation control within a preset range of an operation constraints, for determination of whether or not each of the controlled devices violates the operation constraint, wherein the production amount data and the operation data are in association with a time series;
with use of a computer, comparing a preset reference production amount per unit time and the production amount data, wherein a controlled device of the plurality of controlled devices that violates the operation constraint is present at a time point of acquisition of the production amount data less than the preset reference production amount, and performing data processing of associating an item subjected to the operation constraint related to the controlled device with the production amount data; and
determining a production reduction amount that is a difference between production amount data associated with the item subjected to the operation constraint and the preset reference production amount, and determining, for each of the items subjected to the operation constraints, a length of a period with the production amount data being less than the preset reference production amount in accordance with a magnitude of the production reduction amount.
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