Gasholder load prediction equipment and method and gas scheduling system and method

Abstract

The invention discloses gasholder load prediction equipment and a gasholder load prediction method for a gas system, and a gas scheduling system and a gas scheduling method. The gas system comprises a low-pressure gas generating device and a gasholder which are connected with each other. The method comprises the following steps of: (1) acquiring gasholder loads and gas output of the low-pressure gas generating device at different moments in a first preset time period; (2) selecting a model structure of a gasholder load prediction model, and establishing a gasholder load prediction model according to the selected model structure and the acquired gasholder loads and gas output of the low-pressure gas generating device at different moments in the first preset time period; and (3) predicting gasholder loads at different moments in a second preset time period by utilizing the established gasholder load prediction model, wherein the second preset time period is a time period after the first preset time period. The gasholder load prediction-based gas scheduling system and the gasholder load prediction-based gas scheduling method can radically solve the current problem that the gas balancing and scheduling are carried out through experiences, obviously improve the scheduling level of the gas system and prevent the gasholder loads from exceeding the upper and lower load limits of the gasholder.

Description

technical field [0001] The invention relates to a gas system balance and optimal scheduling technology. Background technique [0002] During the refining process, most devices not only produce liquid products or semi-finished products such as gasoline, diesel, kerosene, but also emit a large amount of gaseous by-products, namely gas. Gas is rich in hydrogen, alkanes, olefins and other components. It is the most important fuel source for oil refineries. A large part of the fuel required for the production process of oil refineries is provided by gas. For this reason, there is a very important System - gas system. [0003] In the gas system, the gas cabinet is the main buffer device for gas, which is used to solve the problem of unbalanced gas production and consumption temporarily. However, the capacity of the gas cabinet itself has upper and lower limits, and the buffering effect of the gas cabinet is limited. If the gas output is far greater than its consumption, the gas...

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Problems solved by technology

[0006] In order to overcome the defect that the gas system cannot be scientifically balanced and dispatched in the prior art, the present invention provides a gas cabinet load prediction method for the gas system. The gas system includes a low-pressure gas generating device and a gas cabinet connected to each other. The method includes: (1) collecting the load of the gas holder and the gas output of the low-pressure gas generating device at different times within the first predetermined time period; (2) selecting the model structure of the gas holder load prediction model, and according to the selected model structure and the selected The gas holder load and the gas output of the low-pressure gas generating device collected at different times within the first predetermined time period are collected, and a gas holder load prediction model is established; (3) Using the established gas holder load prediction model, predict Gas tank loads at different times; the second predetermined time period is the time period after the first predetermined time period

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