Technical constraints related to power systems management may limit the high integration of variable renewable energy sources in the power mix. This issue is addressed for the Reunion Island, which aims to reach energy independence by 2030 using $100\%$ renewables. To that end, a long-term power system analysis is proposed using a comprehensive and coherent approach based on a bottom-up TIMES model providing future production mixes according to different scenarios. A transient reliability indicator based on kinetic energy is proposed and endogenized within the model. In addition, a dedicated Kuramoto model describes the synchronism condition required for aggregating the kinetic energy embedded in the whole power system. For the case of Reunion island, this methodology draws the following conclusions: (i) to achieve the $100\%$ renewables target, the capacity to invest in the energy sector is doubled, and the level of reliability decreases considerably; (ii) the loss of reliability induced by higher intermittency— typically $50\%$ —in the power mix can be counter balanced and leveraged by implementing flexibility solutions (demand response and storage).

与电力系统管理相关的技术约束可能会限制电力组合中可变可再生能源的高度集成。留尼汪岛（Reunion Island）已解决了这个问题，该岛旨在到2030年实现能源独立$100％$可再生能源。为此，基于自下而上的TIMES模型，提出了一种使用全面，一致的方法进行长期电力系统分析的方法，该模型根据不同的情况提供了未来的生产组合。提出了基于动能的暂态可靠性指标，并在模型中进行了内生化。另外，专用的仓本模型描述了聚集嵌入整个电力系统中的动能所需的同步条件。对于留尼汪岛，这种方法得出以下结论：（i）实现$100％$以可再生能源为目标，在能源领域的投资能力增加了一倍，可靠性水平大大降低；（ii）较高的间歇性导致的可靠性丧失-通常$50％$ -通过实施灵活性解决方案（需求响应和存储），可以平衡和利用混合动力。