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A data synchronization correction method based on material balance

A material balance and correction method technology, applied in the field of data correction, can solve problems such as inaccurate correction results, failure to consider significant material correction, and affect material balance results, etc., to achieve the effect of facilitating engineering implementation

Active Publication Date: 2019-06-18
ZHEJIANG SUPCON SOFTWARE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this data correction method does not take into account the correction of significant materials caused by the lack of material movement information. It only uses the production rate of the device or the accuracy of the measuring instrument, and does not use more key constraints of the production process.
Therefore, the correction result obtained by this data correction method is inaccurate, thus affecting the material balance result

Method used

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  • A data synchronization correction method based on material balance
  • A data synchronization correction method based on material balance
  • A data synchronization correction method based on material balance

Examples

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example 1

[0094] Process leakage can also be seen as a lack of material movement information, which can cause serious material imbalances in the material balancing process. This example uses a circulatory system as the research object, which is a linear system, which is also used by many scholars to study data coordination problems, especially to study process leakage. The structure of the system is as figure 2 As shown, there are seven flows a, b, c, d, e, f, g and four device node units 1, 2, 3, 4, and the actual values ​​of the flows are [5,15,15,5,10 ,5,5](m 3 / h), the standard deviation (SD) of measurement is all 2.5% of the true value, all the data in the simulation adopt the average value of ten measurements, and the simulation results are obtained based on 100 simulation data by Monte Carlo method.

[0095] The purpose of the research carried out with this system in this example is to reveal the detection efficiency of the method of the present invention for significant error...

example 2

[0112] Petrochemical is a typical process industry. During the production process, petrochemical products flow from one processing unit to another. The movement of materials in the whole plant forms a complex material balance network. In this example, part of the actual processing flow in a certain oil refinery is used to form a material balance network to illustrate the implementation of the method of the present invention to simultaneously correct significant measurement errors and missing material movement information in material balance.

[0113] By merging and simplifying the material pipe network, devices and storage tanks in the actual production process, a simplified material balance network can be obtained, such as image 3 shown. The material balance network includes 4 processing units (R 1 to R 4 ), 9 incoming and outgoing nodes (IN 1 to IN 3 , S 1 to S 6 ), 12 tanks (T 0 to T 11 ) and 28 material streams (F 1 to F 28 ). The relevant model data are shown ...

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Abstract

The invention relates to the field of data correction, in particular to a data synchronization correction method based on material balance, which comprises the following steps of: S1, establishing a model by adopting a support vector regression method based on a significant error related to measurement and material movement information loss; S2, using VC dimension to represent a measurement-related significant error and a material movement information missing quantitative relation; And S3, detecting and correcting measurement-related significant errors and material movement information loss byadopting a mixed integer linear programming method through minimizing the structure risk. According to the invention, measurement-related significant errors and material movement information loss inthe material balance problem can be synchronously detected and corrected.

Description

technical field [0001] The invention relates to the field of data correction, in particular to a data synchronization correction method based on material balance. Background technique [0002] In any modern refining and chemical plant, activities such as production planning, production scheduling, and performance analysis are the key to manufacturing operation management. These activities depend on material balance data from production statistics. The basic data source of material balance data is production Measurement data during the process. However, due to the complex production process routes and numerous process data in refining and chemical plants, it is difficult to directly obtain plant-level production statistics that can reflect the real production status of the entire plant based on process measurement data. For an operating unit (production unit), the flow of all pipelines connected to it can be measured, then applying a mass balance principle, the sum of the fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18G06K9/62G06Q10/06G06Q10/08
CPCY02P90/30
Inventor 郑修强陆海琛
Owner ZHEJIANG SUPCON SOFTWARE
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