电力系统运行柔性分析
Analyzing Operational Flexibility of Power Systems
摘要：
运行灵活性是电力系统的一个重要特性，对于当今电力系统（其中许多基于化石燃料）向能够有效地容纳高份额可变可再生能源（RES）的电力系统的过渡起着至关重要的作用。在给定的电力系统中，足够的操作灵活性的可用性是可变RES，特别是风力发电和光伏发电（PV）的大份额波动功率馈入的有效电网整合的必要前提。本文建立了必要的框架，量化和可视化的技术上可用的操作灵活性的单个电力系统单元和合奏。定义电力系统的操作灵活性，即功率斜坡率，发电机，负载和存储设备的功率和能量的能力，必要的指标。定性地分析了不同类型的电力系统单元的柔性特性，例如不可控、可削减或完全可控的负荷、发电和存储单元，并相互比较。直观的电力系统的例子的定量结果和灵活性可视化。
英文摘要：
Operational flexibility is an important property of electric power systems and plays a crucial role for the transition of today's power systems, many of them based on fossil fuels, towards power systems that can efficiently accommodate high shares of variable Renewable Energy Sources (RES). The availability of sufficient operational flexibility in a given power system is a necessary prerequisite for the effective grid integration of large shares of fluctuating power in-feed from variable RES, especially wind power and Photovoltaics (PV). This paper establishes the necessary framework for quantifying and visualizing the technically available operational flexibility of individual power system units and ensembles thereof. Necessary metrics for defining power system operational flexibility, namely the power ramp-rate, power and energy capability of generators, loads and storage devices, are presented. The flexibility properties of different power system unit types, e.g. load, generation and storage units that are non-controllable, curtailable or fully controllable are qualitatively analyzed and compared to each other. Quantitative results and flexibility visualizations are presented for intuitive power system examples.
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