LV distribution system modelling for distributed energy resources

2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC) Pub Date : 2016-06-07 DOI:10.1109/EEEIC.2016.7555679

A. D. Di Fazio, M. Russo, S. Valeri, M. De Santis

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引用次数: 3

Abstract

A key issue in LV distribution system management and control is to increase the flexibility of the existing networks so as to allow a large spread of Distributed Energy Resources (DERs). In this perspective, virtual levels of aggregation, called Virtual Microgrids (VMs), are introduced, which are composed of parts of the distribution networks including different types of DERs and their control systems. To identify the VMs it is necessary to model the impact of DERs on the voltages and power flows of the LV distribution networks and to aggregate them on the basis of their impact on specific control actions. This paper proposes, as the first step, a new model of the LV distribution system derived from the DistFlow equations. The model expresses the variations of the electrical variables of the LV network as linear functions of the DERs injections, thus proving to be suitable for the VM definition. In a case study, a comparison of the results given by the proposed model with the load flow solutions is discussed and the evaluation of the impact of the DERs on the nodal voltages of a LV distribution system is analyzed.

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分布式能源的低压配电系统建模

低压配电系统管理与控制的一个关键问题是增加现有网络的灵活性，使分布式能源能够广泛传播。从这个角度来看，引入了虚拟聚合级别，称为虚拟微电网(vm)，它由配电网络的各个部分组成，包括不同类型的der及其控制系统。为了识别虚拟机，有必要建立虚拟机对低压配电网电压和潮流的影响模型，并根据它们对特定控制动作的影响将它们汇总起来。本文首先从DistFlow方程出发，提出了低压配电系统的新模型。该模型将低压网络的电变量的变化表示为der注入的线性函数，从而证明适合于VM定义。通过实例分析，将该模型的计算结果与负荷潮流解进行了比较，并分析了低电压负荷对低压配电系统节点电压的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC)

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