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天然气管道管存量计算方法对输差计算的影响.

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Title: 天然气管道管存量计算方法对输差计算的影响.
Alternate Title: Influence of calculation method of natural gas pipeline stock on calculation of transmission loss.
Authors: 谢英1 xying426@163.com, 王恩凯1, 麦芳锐2, 左直建3, 王宇1
Source: Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong. Jun2025, Vol. 54 Issue 3, p138-145. 8p.
Subjects: Absolute value, Temperature control, Inventory control, Pressure control, Natural gas pipelines, Temperature
Abstract (English): Objective Pipeline network managers need to calculate the transmission loss daily. When the transmission loss exceeds the warning value, it is necessary to analyze the abnormal causes. An accurate calculation method of the transmission loss is conducive to the early detection of problems and provides support for the analysis of causes. Method By selecting a certain step size, the pipeline between adjacent stations of the long-distance natural gas pipeline was divided into several control volumes. Using the classic fourth-order R-K formula, the temperatures and pressures at both ends of different control volumes were calculated respectively. When the step size was small enough and the temperature and pressure changes at both ends of the control volume were extremely small, the average pressure and temperature of the control volume could be taken to calculate the pipeline stock of the control volume, and then the transmission loss could be calculated. Result In the case of accurate measurement of the metering instrument and the adoption of the AGA 92DC method for the calculation of the compression factor, the absolute value of the transmission loss rate calculated by this method was mostly smaller than that of the field method, and the average value of the absolute value of the transmission loss rate calculated by this method was smaller than that calculated by the field method. Conclusion The transmission loss rate calculated by this method is smaller than that calculated by the field method, and the transmission loss calculated by the field method is larger. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 目的 管网管理人员每天需计算输差, 当输差超过预警值时, 需要分析异常原因。准确的输差计算方法有助于及 早发现问题, 并为原因分析提供支持。方法 通过选取一定的步长将天然气长输管道相邻站场间的管道划分为若干控制体, 采用经典的四阶龙格−库塔法, 分别计算不同控制体内两端的温度、压力。当步长足够小时, 控制体两端的温度、压力变化 极小, 可取控制体的平均压力和平均温度来计算控制体管存量, 进而计算输差。结果 在计量仪表测量准确, 压缩因子计算 采用 AGA 92DC 方法的情况下, 该方法的输差率绝对值大多小于现场方法的输差率绝对值, 计算出的输差率绝对值的平均 值小于现场方法计算出的输差率绝对值的平均值。结论 该方法计算出的输差率小于现场采用方法计算出的输差率, 现场 方法计算得到的输差偏大。 [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong is the property of PetroChina Southwest Oil & Gas Field Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: 天然气管道管存量计算方法对输差计算的影响.
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  Data: Influence of calculation method of natural gas pipeline stock on calculation of transmission loss.
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  Data: <searchLink fieldCode="DE" term="%22Absolute+value%22">Absolute value</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+control%22">Temperature control</searchLink><br /><searchLink fieldCode="DE" term="%22Inventory+control%22">Inventory control</searchLink><br /><searchLink fieldCode="DE" term="%22Pressure+control%22">Pressure control</searchLink><br /><searchLink fieldCode="DE" term="%22Natural+gas+pipelines%22">Natural gas pipelines</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature%22">Temperature</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: Objective Pipeline network managers need to calculate the transmission loss daily. When the transmission loss exceeds the warning value, it is necessary to analyze the abnormal causes. An accurate calculation method of the transmission loss is conducive to the early detection of problems and provides support for the analysis of causes. Method By selecting a certain step size, the pipeline between adjacent stations of the long-distance natural gas pipeline was divided into several control volumes. Using the classic fourth-order R-K formula, the temperatures and pressures at both ends of different control volumes were calculated respectively. When the step size was small enough and the temperature and pressure changes at both ends of the control volume were extremely small, the average pressure and temperature of the control volume could be taken to calculate the pipeline stock of the control volume, and then the transmission loss could be calculated. Result In the case of accurate measurement of the metering instrument and the adoption of the AGA 92DC method for the calculation of the compression factor, the absolute value of the transmission loss rate calculated by this method was mostly smaller than that of the field method, and the average value of the absolute value of the transmission loss rate calculated by this method was smaller than that calculated by the field method. Conclusion The transmission loss rate calculated by this method is smaller than that calculated by the field method, and the transmission loss calculated by the field method is larger. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Chinese)
  Group: Ab
  Data: 目的 管网管理人员每天需计算输差, 当输差超过预警值时, 需要分析异常原因。准确的输差计算方法有助于及 早发现问题, 并为原因分析提供支持。方法 通过选取一定的步长将天然气长输管道相邻站场间的管道划分为若干控制体, 采用经典的四阶龙格−库塔法, 分别计算不同控制体内两端的温度、压力。当步长足够小时, 控制体两端的温度、压力变化 极小, 可取控制体的平均压力和平均温度来计算控制体管存量, 进而计算输差。结果 在计量仪表测量准确, 压缩因子计算 采用 AGA 92DC 方法的情况下, 该方法的输差率绝对值大多小于现场方法的输差率绝对值, 计算出的输差率绝对值的平均 值小于现场方法计算出的输差率绝对值的平均值。结论 该方法计算出的输差率小于现场采用方法计算出的输差率, 现场 方法计算得到的输差偏大。 [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong is the property of PetroChina Southwest Oil & Gas Field Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3969/j.issn.1007-3426.2025.03.019
    Languages:
      – Code: chi
        Text: Chinese
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        PageCount: 8
        StartPage: 138
    Subjects:
      – SubjectFull: Absolute value
        Type: general
      – SubjectFull: Temperature control
        Type: general
      – SubjectFull: Inventory control
        Type: general
      – SubjectFull: Pressure control
        Type: general
      – SubjectFull: Natural gas pipelines
        Type: general
      – SubjectFull: Temperature
        Type: general
    Titles:
      – TitleFull: 天然气管道管存量计算方法对输差计算的影响.
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            NameFull: 谢英
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            NameFull: 王恩凯
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            NameFull: 麦芳锐
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            NameFull: 左直建
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            NameFull: 王宇
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              M: 06
              Text: Jun2025
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              Y: 2025
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