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A composable method for real-time control of active distribution networks with explicit power setpoints. Part II: Implementation and validation

机译:具有显式功率设定点的实时控制有源配电网的可组合方法。第二部分:实施和验证

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In this second part, we evaluate the performances of our control framework by applying it to a case study that contains a minimum set of elements allowing to show its applicability and potentials. We show how the computation of the PQt profiles, belief functions, and virtual costs can be synthesized for generic resources (i.e., dispatchable and stochastic generation systems, storage units, loads). The metrics of interest are: quality-of-service of the network represented by voltages magnitudes and lines current magnitudes in comparison with their operational boundaries; state-of-charge of electric and thermal storage devices; proportion of curtailed renewables; and propensity of microgrid collapse in the case of renewables overproduction. We compare our method to two classic ones relying on droop control: the first one with only primary control on both frequency and voltage and the second one with an additional secondary frequency control operated by the slack device. We find that our method is able to indirectly control the reserve of the storage systems connected to the microgrid, thus maximizing the autonomy in the islanded operation and, at the same time, reducing renewables curtailment. Moreover, the proposed control framework keeps the system in feasible operation conditions, better explores the various degrees of freedom of the whole system and connected devices, and prevents its collapse in case of extreme operation of stochastic resources. All of these properties are obtained with a simple and generic control framework that supports aggregation and composability. (C) 2015 Elsevier B.V. All rights reserved.
机译:在第二部分中,我们通过将控制框架应用于案例研究来评估控制框架的性能,该案例研究包含一组最小的要素,以显示其适用性和潜力。我们展示了如何针对通用资源(即可调度和随机生成系统,存储单元,负载)合成PQt配置文件,置信函数和虚拟成本的计算。感兴趣的度量标准是:网络的服务质量,由电压幅度和线路电流幅度与其工作边界相比来表示;蓄热装置的充电状态;减少可再生能源的比例;以及在可再生能源生产过剩的情况下微电网崩溃的可能性。我们将我们的方法与两个经典的依赖于下垂控制的方法进行比较:第一个方法仅对频率和电压进行一次控制,第二个方法由松弛设备进行额外的次级频率控制。我们发现,我们的方法能够间接控制连接到微电网的存储系统的储备,从而最大程度地提高了孤岛运行的自主性,同时减少了可再生能源的削减。此外,所提出的控制框架使系统保持在可行的操作条件下,更好地探索了整个系统和所连接设备的各种自由度,并在随机资源极端运行的情况下防止了系统崩溃。所有这些属性都是通过支持聚合和可组合性的简单通用控制框架获得的。 (C)2015 Elsevier B.V.保留所有权利。

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