掺氢天然气管道气-电耦合系统风险模型研究

Study on Risk Model of Gas-electricity Coupling System of Hydrogen-mixed Natural Gas Pipeline

针对掺氢天然气管网与电网耦合过程中电-氢-电复杂能量转换风险量化问题,提出一种面向掺氢天然气管网气-电耦合风险评估方法,构建掺氢天然气管道三阶段风险评估模型,评估不同时期管道的风险;并提出计及气电耦合的物质—能量的风险传递模型,用于刻画掺氢天然气管道风险在气-电网之间传递的过程;通过构建不同掺氢比天然气管网气-电耦合风险运行算例验证了模型的有效性,为该系统接入电网提供了安全理论支持,为氢能高效利用提供了新的思路与保障。

In view of quantification of risks in the complex energy conversion process involving electricity-hydrogen-electricity during the coupling of hydrogen-mixed natural gas pipeline and electrical grid,a kind of risk assessment method tailored to the gas-electric coupling in hydrogen-mixed natural gas pipeline networks is proposed.The three-stage risk assessment model for hydrogen-mixed natural gas pipelines is constructed to evaluate the risks at different stages of the pipeline.Furthermore,the material-energy risk transfer model that takes into account the coupling of gas and electricity is proposed to depict the process of risk transfer of hydrogen-mixed natural gas pipeline risks between the gas and electrical networks.The effectiveness of the model is verified by constructing operational scenarios with varying hydrogen-mixing ratios in the natural gas pipeline-electrical grid coupling,which provides safe and theoretical support for the integration of this system into the electrical grid and offers new insights and assurances for the efficient utilization of hydrogen energy.