Probabilistic Analysis based on Steady-state Voltage Level Compliance Indicators for LV Distribution Networks with High PV and EV Penetration

Luiz Eduardo Sales e Silva, João Paulo Abreu Vieira, Camila Souza Alves, Andrey da Costa Lopes
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Abstract

The modification and modernization processes of the electrical networks, which aim to decarbonize and decentralize the power generation, have introduced new components in secondary distribution networks. Photovoltaic (PV) microgenerators and electric vehicles (EV) are highlighted components to reach environmental objectives. However, high PV microgeneration and EV penetration cause technical and economic problems on secondary distribution networks, mainly related to steady-state voltage variation. In this context, this paper proposes a probabilistic economic analysis approach based on steady-state voltage level compliance indicators for low voltage (LV) distribution networks with high PV and EV penetration. The Brazilian National for Electrical Energy (ANEEL) establishes limits for steady-state voltage indicators, known as relative duration of precarious voltage transgression (DRP) and relative duration of critical voltage transgression (DRC). Monte Carlo simulations were carried out to evaluate PV generation and EV demand uncertainties. The proposed approach was tested on a real LV distribution network, and costs by by DRP and DRC indicators increase under high PV and EV penetration.
基于光伏和电动汽车高渗透低压配电网稳态电压水平符合性指标的概率分析
电网的改造和现代化进程旨在使发电脱碳和分散,在二级配电网中引入了新的组成部分。光伏(PV)微型发电机和电动汽车(EV)是实现环境目标的重点部件。然而,光伏微发电和电动汽车的高渗透率给二次配电网带来了技术和经济问题,主要与稳态电压变化有关。在此背景下,本文提出了一种基于高光伏和电动汽车普及率的低压配电网稳态电压水平符合性指标的概率经济分析方法。巴西国家电力能源(ANEEL)规定了稳态电压指标的限值,即不稳定电压越界的相对持续时间(DRP)和临界电压越界的相对持续时间(DRC)。采用蒙特卡罗模拟方法对光伏发电和电动汽车需求的不确定性进行了评估。该方法在实际低压配电网上进行了测试,在光伏和电动汽车普及率较高的情况下,DRP和DRC指标的成本增加。
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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