An on-line simulation method of a large-scale complex natural gas pipeline network system

A technology of natural gas pipeline network and simulation method, which is applied in the field of online simulation of pipeline system, can solve the problems of inability to realize self-adaptation of simulation model, complicated operation, technical blockade of foreign products, etc.

Pending Publication Date: 2019-02-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, for many years, the simulation calculation and operation analysis of domestic natural gas pipelines, especially the online simulation technology, has been relying on imported commercial software (SPS, TGNET, etc.). It also faces problems such as technical blockade of foreign products, inadequate service, and difficulty in product expansion, which greatly restricts the business development of domestic pipeline companies; therefore, facing an increasingly large and complex natural gas pipeline transmission network, it is urgent to develop independent knowledge Property rights, stable, accura

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  • An on-line simulation method of a large-scale complex natural gas pipeline network system
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  • An on-line simulation method of a large-scale complex natural gas pipeline network system

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Embodiment

[0166] Concrete embodiment demonstration, comprises the following steps:

[0167] Step 1: Establish the pipeline model of the Nanle-Qihe section by applying the pipeline network simulation theory, and set dynamic simulation monitoring parameters for the pipeline nodes. image 3 That is, the pipeline network simulation model of this section is established. The model consists of 11 nodes, 9 pipelines and a pressure regulating device.

[0168] The natural gas transported in the Yuji pipeline was analyzed by a chromatographic analyzer, and the component data obtained are shown in Table 1.

[0169] Table 1 Fluid composition in the pipeline

[0170] components

Measured value / Mol%

components

Measured value / Mol%

Methane (C1)

92.6588

Isopentane (nC5)

0.0747

Ethane (C2)

4.1025

Neopentane (NEO-C5)

0.000

Propane (C3)

0.9213

Hexane (C6)

0.0879

n-Butane (iC4)

0.1843

Nitrogen (N2)

0.5612

Isobutan...

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Abstract

An on-line simulation method of a large-scale complex natural gas pipeline network system is characterized gy firstly establishing a simulation model of the pipe network, carrying out the SCADA data connection, associating real-time data with the simulation model, carrying out the static simulation and finally the on-line simulation to describe the flow state, distribution and changing process ofthe pipeline network in real time; describing the response and changing process of all kinds of operation, control and events; giving the trend of hydraulic and thermodynamic change, obtaining the dynamic simulation of the pipeline real time state by a Newton-Raphson iterative method and the layer by layer calculation. The method of the invention realizes the on-line simulation and tracks the real-time hydraulic changing process of pressure, flow rate and flow velocity of the pipe network system, the thermal working conditions such as temperature, the changing process of fluid properties suchas flow rate, density, viscosity, sound speed, entropy and enthalpy, and the real-time changing process of pressure at the storage and special points.

Description

technical field [0001] The invention relates to the technical field of on-line simulation of pipeline systems, in particular to an on-line simulation method for large-scale and complex natural gas pipeline network systems. Background technique [0002] In the past 10 years, my country's oil and gas pipeline construction has accelerated. Among them, with the first, second, and third lines of the West-East Gas Pipeline, the first, second, third, and fourth lines of the Shaanxi-Beijing Gas Pipeline, the Yuji Pipeline, and the Sichuan-East Gas Pipeline, a number of large-caliber, long-distance, high-pressure, and high-throughput natural gas pipelines Construction and operation have been started one after another, and a huge national natural gas pipeline network system has basically been formed in my country. As an important infrastructure, natural gas pipelines have become the main mode of natural gas transportation and distribution, and their role as energy arteries in my count...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/18G06F30/20Y02P90/02
Inventor 蒲宏斌王寿喜汪春付李春奇王力勇郭乔孙溢祥刘思良张廷廷刘丹
Owner CHINA PETROLEUM & CHEM CORP
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