Abstract Energy networks, especially the ones of natural gas, electric energy and district heating, are crucial infrastructures for the everyday life of our countries and cities. Thus, resilience and security of networks are becoming increasingly critical issues due to: a) the vulnerability of the territories, b) the effects of climate change (e.g. landslides, floods) and/or natural events (e.g. heartquakes) and c) cyber and terrorist attacks. In recent years, more attention has been paid to transmission networks rather than to urban distribution ones, although important consequences in terms of economic and public health damages can arise for urban distribution networks too. In this paper, the authors propose a resilience assessment methodology for natural gas distribution networks. The methodology allows simulating fault conditions in the network leading to quality of service issues (e.g. methane dispersion in the atmosphere, prolonged service interruption) and to disservices (e.g. disrupted final users). In such way, it could be possible to define effective operational management strategies to reduce the risk of service disruption and to increase the network resilience evaluating structural network improvement measures. The proposed methodology has been experimented in a case study of a real distribution network and the results show it is possible to avoid or minimize the risk of service.

中文翻译：

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一种用于配气网络的弹性评估模拟工具

摘要 能源网络，尤其是天然气、电能和区域供热网络，是我们国家和城市日常生活的重要基础设施。因此，由于以下原因，网络的弹性和安全性正成为越来越重要的问题：a) 领土的脆弱性，b) 气候变化的影响（例如山体滑坡、洪水）和/或自然事件（例如心脏地震）以及 c) 网络和恐怖袭击。近年来，人们更多地关注输电网络而不是城市配电网络，尽管城市配电网络也会对经济和公共健康造成严重损害。在本文中，作者提出了一种天然气分配网络的弹性评估方法。该方法允许模拟导致服务质量问题（例如大气中的甲烷扩散、服务中断时间延长）和服务中断（例如最终用户中断）的网络故障条件。通过这种方式，可以定义有效的运营管理策略，以降低服务中断的风险并提高评估结构性网络改进措施的网络弹性。所提出的方法已在实际配电网络的案例研究中进行了实验，结果表明可以避免或最小化服务风险。可以定义有效的运营管理策略，以降低服务中断的风险，并通过评估结构性网络改进措施来提高网络弹性。所提出的方法已在实际配电网络的案例研究中进行了实验，结果表明可以避免或最小化服务风险。可以定义有效的运营管理策略，以降低服务中断的风险，并通过评估结构性网络改进措施来提高网络弹性。所提出的方法已在实际配电网络的案例研究中进行了实验，结果表明可以避免或最小化服务风险。