标题： 电力系统强度的分析框架 显示英文标题

标题： Analytical Framework for Power System Strength

摘要： 本文提出了一种通用框架来评估电力系统强度。 该公式包括十二个指标，分为三个动态阶次，用于量化节点电压相量及其一阶和二阶变化率对突然电流注入变化的抵抗能力。 为了量化此类变化，本文引入了一种新的有限差分技术，我们称之为Delta算子，能够正确捕捉代数变量的“跳跃”并利用了最近发展的复频概念。 本文还展示了所提出的框架如何系统地应用于任何系统设备，并提供了基于同步机、换流器和负荷模型的各种示例。 基准系统的数值结果验证了公式的准确性。 显示英文摘要

摘要： This paper proposes a general framework to evaluate power system strength. The formulation features twelve indicators, grouped in three dynamical orders, that quantify the resistance of bus voltage phasors and their first and second order rates of change to sudden current injection changes. To quantify such changes the paper introduces a novel finite differentiation technique, that we named Delta operator, able to properly capture "jumps" of algebraic variables and utilizes the recently developed concept of complex frequency. The paper also shows how the proposed framework can be systematically applied to any system device, and provides a variety of examples based on synchronous machines, converters and loads models are given. Numerical results in a benchmark system validate the exactness of the formulation.