化工进展 ›› 2024, Vol. 43 ›› Issue (S1): 61-70.DOI: 10.16085/j.issn.1000-6613.2024-0340

• 化工过程与装备 • 上一篇    下一篇

基于贝叶斯网络的掺氢管道泄漏风险评价方法

徐晴晴1,2(), 张璇1,2, 赵瑞东3, 熊鑫1,2, 蒋璐朦4, 禹胜阳4   

  1. 1.中国石油大学(北京)安全与海洋工程学院,北京 102249
    2.油气生产安全与应急技术应急管理部重点 实验室,北京 102249
    3.中国石油天然气股份有限公司勘探开发研究院,北京 100083
    4.中国石油国际勘探开发有限公司,北京 100034
  • 收稿日期:2023-03-01 修回日期:2023-05-23 出版日期:2024-11-20 发布日期:2024-12-06
  • 通讯作者: 徐晴晴
  • 作者简介:徐晴晴(1986—),女,博士,讲师,研究方向为管道监测和检测技术、管道完整性技术等。E-mail:xuqq@cup.edu.cn
  • 基金资助:
    中国石油科技创新基金(2021DQ02-0801);中国石油天然气集团有限公司-中国石油大学(北京)战略合作科技专项项目(ZLZX2020-05)

Bayesian network risk assessment method for hydrogen blending natural gas pipeline leakage

XU Qingqing1,2(), ZHANG Xuan1,2, ZHAO Ruidong3, XIONG Xin1,2, JIANG Lumeng4, YU Shengyang4   

  1. 1.School of Safety and Ocean Engineering, China University of Petroleum (Beijing), Beijing 102249, China
    2.Key Laboratory of Oil and Gas Production Safety and Emergency Technology Emergency Management, Beijing 102249, China
    3.Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
    4.China National Oil and Gas Exploration and Development Company Ltd. , Beijing 100034, China
  • Received:2023-03-01 Revised:2023-05-23 Online:2024-11-20 Published:2024-12-06
  • Contact: XU Qingqing

摘要:

氢气是一种可靠的清洁能源,开展氢气体积分数10%~20%的天然气掺氢输送是目前国内外氢气经济高效输送研究的热点。然而,掺氢后天然气的密度、热值、阻力等发生改变,打破管网的动态平衡。不同掺氢比例对管道的相容性、安全事故、完整性等均产生影响,将增大管道的失效风险。因此,本文开展掺氢天然气管道失效风险分析,通过识别掺氢过程中可能出现的各种风险因素,建立以掺氢天然气管道泄漏失效为顶上事件的事故树,再依据事故树与贝叶斯网络的映射关系转化为对应的贝叶斯网络。将时间因素纳入分析中,进行掺氢天然气管道失效的动态贝叶斯网络分析,得出导致管道失效的关键因素以及随时间变化的变化趋势。考虑到不同的掺氢比例会对管道部分基本事件的先验概率产生影响,在掺氢比例5%~30%工况下,对失效概率进行更新,获得管道失效概率随掺氢比例变化的变化趋势,为天然气管道掺氢技术的风险管理及控制提供了新的思路与方法。

关键词: 掺氢天然气管道, 失效风险分析, 贝叶斯网络, 事故树, leaky noisy-or gate模型

Abstract:

Hydrogen is a reliable clean energy, and the hydrogen doping of natural gas with a volume concentration of 10%—20% is currently a hot spot in the research on the economical and efficient transportation of hydrogen at home and abroad. However, the density, calorific value, resistance, etc. of natural gas change after hydrogen doping, breaking the dynamic balance of the pipeline network. Different hydrogen doping ratios have an impact on the compatibility, safety accidents and integrity of pipelines, which will increase the risk of pipeline failure. Therefore, this paper analyzed the failure risk of the dynamic process of hydrogen doping in natural gas pipelines, identified various risk factors that might occur in the process of hydrogen doping, established an accident tree with the failure of natural gas hydrogen doping pipelines as the top event, and then transformed it into the corresponding Bayesian network according to the mapping relationship between the accident tree and the Bayesian network. The time factor was incorporated into the analysis, and the dynamic Bayesian network analysis of natural gas hydrogen doped pipeline failure was carried out to obtain the key factors leading to pipeline failure and the change trend over time. Considering that different hydrogen doping ratios would have an impact on the prior probability of some basic events of pipelines, the failure probability was updated under the condition of 5%—30% hydrogen doping ratio, and the change trend of pipeline failure probability with hydrogen doping ratio was obtained, which provided new ideas and methods for the risk management and control of natural gas pipeline hydrogen doping technology.

Key words: hydrogen blended natural gas pipeline, failure risk analysis, Bayesian network, fault tree, leaky noisy-or gate model

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