标题： RoCoF约束的区域惯性安全区域：公式与应用 显示英文标题

标题： RoCoF Constrained Regional Inertia Security Region: Formulation and Application

摘要： 区域惯性决定了区域频率变化率（RoCoF），在可再生能源渗透的电力系统中，应保持在安全状态。 为了摆脱以线性化形式将区域最大RoCoF与区域惯性映射的关系，本文从公式到应用全面研究了区域惯性安全问题。 首先，定义了区域惯性安全区域（R-ISR），其边界是非线性和非凸的。 然后，设计了一种局部线性化方法来计算区域RoCoF的最大值。 非凸的ISR边界通过对应每个局部解的多个简单边界来表示，这些边界可以通过一种简单的基于搜索的方法获得。 最后，通过凸分解形成凸化的R-ISR约束，并嵌入到惯性最优调整模型中。 在3区域系统上的结果显示出一些反直觉的发现，例如增加某一区域的惯性可能会恶化其RoCoF。 显示英文摘要

摘要： The regional inertia, which determines the regional rate of change of frequency (RoCoF), should be kept in a secure status in renewable-penetrated power systems. To break away from mapping the regional maximum RoCoF with regional inertia in a linearized form, this paper comprehensively studies the regional inertia security problem from formulation to applications. Firstly, the regional inertia security region (R-ISR) is defined, whose boundary is non-linear and non-convex. Then, a local linearized method is devised to calculate the global maximum of regional RoCoF. The non-convex ISR boundary is expressed by multiple simple boundaries corresponding to each local solution, which can be obtained by a simple search-based method. Finally, the convexified R-ISR constraint is formed by convex decomposition and embedded in an inertia optimal adjustment model. The results on a 3-region system show some counter-intuitive findings, such as increasing the inertia of one region may worsen its RoCoF.