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- Title
输气站场无人化自动分输技术在西气东输工程的实现.
- Authors
梁 怿; 彭太翀; 李明耀
- Abstract
The West-to-East Gas Pipeline Project is the energy lifeline for China's "gasification", and its gas transmission efficiency has a direct effect on the whole natural gas energy industry of China. At the gas transmission stations of the West-to-East Gas Pipeline Project, massive manual intervention is needed and some problems are caused by human factors, e.g. over-amount offtake, offtake instability, offtake interruption and inaccurate measurement. In order to solve these problems and improve the efficiency, accuracy and stability of natural gas offtake, this paper applied the SCADA system program to set the time-based automatic start offtake logic, the intelligent offtake logic based on adaptive generalized prediction algorithm, the fault response logic based on instantaneous flow monitoring, position monitoring of electrical ball valves, status monitoring of electric regulating valves and flow meter operation monitoring, and the automatic offtake stop logic based on amount judgment. And consequently, the unmanned automatic offtake of gas transmission stations was realized. And the following results were obtained on the basis of trial run and test. First, the unmanned offtake logic has a better reliability. During its trial run at 31 stations for half a year, 2.248×109 m3 natural gas was successfully transmitted and the problems existing in the old gas transmission mode never happened. Second, the unmanned offtake logic has a better stability. The overshoot of the logically controlled parameters is reduced to less than 5%, and the change rate of valve opening is reduced by more than 10%. Third, the unmanned offtake logic has a better capacity of undisturbed switching, fault switching, mistake-proofing control and fault response. In conclusion, the application of unmanned offtake technology improves the production efficiency and automatic and intelligent management level of gas transmission stations.
- Subjects
CHINA; NATURAL gas pipelines; ELECTRON tubes; GAS industry; NATURAL gas; FLOW meters; AUTOMATION; BIOPROSTHESIS
- Publication
Natural Gas Industry, 2019, Vol 39, Issue 11, p112
- ISSN
1000-0976
- Publication type
Article
- DOI
10.3787/j.issn.1000-0976.2019.11.015