论文标题
气体和电力分配网络中的电力对气：建模方法的灵敏度分析
Power-to-Gas in a gas and electricity distribution network: a sensitivity analysis of modeling approaches
论文作者
论文摘要
在过去几年中，Power-to-Gas（P2G）一直是最常讨论的技术之一。该技术允许生产无二氧化碳的燃料。由于其较高的灵活性，它可能为电力系统提供服务，促进可变可再生能源（VRE）和电力需求匹配，从而减轻与VRES过度生产有关的问题。在文献中已经广泛分析了与传输系统相关的P2G植物的作用。相反，对分配级别使用的这些系统的分析仅在一些研究中得到了处理：但是，在这种情况下，在电气和天然气基础设施上都可以很容易地出现关键操作条件。本文介绍了在分配系统级别安装P2G时不同仿真方法的影响的方法论分析。为了避免高估或低估P2G植物与分销网络相关的潜在灵活性，需要选择最合适的电力和分销网格建模方法。本文的目的是了解不同建模方法的影响，以确定以及在哪种条件下是否可以接受。已经开发了一个说明性的案例研究来执行这种分析。结果表明，重要的是要考虑到电力分销网络拓扑，因为P2G植物的性能可能会受到网络中的位置的影响。忽略气体网络的动力学或在低气体需求条件下P2G植物组件之间的相互作用会导致低估整个系统的柔韧性。如果对气体的需求足够高，则可以使用简化的假设，这些假设不认为气体网络和P2G系统的动态可能是可以接受的。
Power-to-Gas (P2G) has been one of the most frequently discussed technologies in the last few years. This technology allows producing CO2 free fuels. Thanks to its high flexibility, it may offer services to the power system, fostering Variable Renewable Energy Sources (VRES) and the electricity demand match, mitigating the issues related to VRES overproduction. The role of P2G plants connected to the transmission system as flexibility asset has been extensively analyzed in the literature. Conversely, the analysis of these systems used at distribution level has only been dealt with in a few studies: however, in this case critical operation conditions can easily arise, both on electrical and gas infrastructure. This article presents a methodological analysis on the impact of different simulation approaches when P2G is installed at distribution system level. The choice of the most appropriate modeling approaches for electricity and distribution grids is required in order to avoid overestimating or underestimating the potential flexibility that P2G plants connected to distribution networks can offer. The aim of this paper is to understand the impact of different modeling approaches in order to determine whether, and under which conditions, this is acceptable. An illustrative case study has been developed to perform this kind of analysis. The results demonstrated that it is important to take into account the electric distribution network topology, as the performance of P2G plants could be affected by their placement in the network. Neglecting the dynamics of a gas network or the interactions between P2G plant components under a low gas demand condition can lead to an underestimation of the flexibility of the entire system. If the demand for gas is high enough, the use of simplified assumptions that do not consider the dynamics of the gas network and P2G systems may be acceptable.
