AI 中文总结
对比分析氢气与天然气网络在压缩机意外情况时管道储气的影响，通过对集成电力系统的两种网络进行三天动态模拟，发现H2瞬态恢复快，且管径不同时两网络压力损失有别，可为天然气传输系统运营商提供设计和运营电网的参考。
AI 中文摘要
管道储气是气体网络中的关键缓冲，提供短期存储和运行灵活性。本文对压缩机意外情况时氢气（H2）和天然气（CH4）网络中的管道储气影响进行了对比动态分析。对与电力系统集成的CH4网络和H2网络进行了为期三天的动态模拟。研究了两种情况：情况1中CH4和H2网络管道内径相同，情况2中不同。结果表明，压缩机意外情况后H2的瞬态恢复更快，尽管其管道储气比CH4少。此外，根据所选管道直径，两个网络中的压力损失可能有显著差异。相同管径时，H2的压降低于CH4，其需求削减较少。但H2管道直径减小时，H2管道的压降增加，削减负荷高于CH4网络。这些结果可供天然气传输系统运营商更高效地设计和运营其电网。
英文摘要
Linepack is a critical buffer in gas networks, providing short-term storage and operational flexibility. This paper presents a comparative dynamic analysis of the linepack impact in hydrogen (H2) and natural gas (CH4) networks under compressor contingency conditions. A three-day dynamic simulation is conducted for a CH4 network and a H2 network integrated with a power system. Two cases are investigated: Case 1 with identical and Case 2 with different pipe inner diameters in CH4 and H2 networks. The results in both cases show that H2 exhibits faster transient recovery after the compressor contingency, although its linepack is less than that of CH4. On the other hand, depending on the selected pipe diameter, pressure losses in the two networks can differ significantly. With identical pipe diameters, H2 exhibits lower pressure drop than CH4, and its demand therefore experiences less curtailment. However, when the H2 pipe diameter is reduced, the pressure drop across the H2 pipes increases and the curtailed load becomes higher than in the CH4 network. These results can be used by gas TSOs in designing and operating their grid more efficiently.
