产消光伏安装对低压电网电压变化影响的评估

D. Rusinaru, P. Mircea, G. Buzatu, L. Manescu, M. Alba
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引用次数: 0

摘要

本文讨论了可再生太阳能光伏(PV)在配电网中不断增加的渗透所带来的影响。大学和当地配电网运营商(PDO)之间的一个合作项目导致了这次评估,该评估解决了运营商对基于可再生能源的发电机如何影响其电网系统的电能质量(PQ)的具体担忧。评估了光伏产消者安装与主机低压(LV)网络之间的相互作用,特别是产消者产生或放大的电压变化,以及这些人所经历的事件。为了进行分析,我们对低压电网中实际光伏产消者的输出以及供电变电站的低压母线进行了一周间隔的PQ测量。研究了不同太阳能逆变器技术在电网中的性能。分析了产消网的双向影响,估计了PQ事件的来源。基于测量的观察揭示了光伏发电条件、太阳能逆变器运行和托管电网之间的共同责任。最后,给出了关于测量、分析和缓解的一般性结论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
ASSESSMENT OF PROSUMER PHOTOVOLTAIC INSTALLATION IMPACT ON VOLTAGE VARIATIONS IN LOW-VOLTAGE NETWORKS
This paper addresses the impact of the increasing penetration of renewable solar photovoltaic (PV) in the power distribution grids. A collaborative project between the university and the local power distribution grid-s operator (PDO) led to this assessment, which addressed the operator-s specific concerns about how renewable energy-based generators might affect the power quality (PQ) in its grid system. There was evaluated the interaction between PV prosumers' installations and the hosting low voltage (LV) network, specifically the variations in voltage produced or amplified by prosumers, as well as the events experienced by these ones. For the purpose of the analysis, one-weekinterval PQ measurement have been processed at the outputs of real PV prosumers located in the LV network, as well as at the LV buses of the supplying substations. The behavior of different solar inverter technologies in the power grid is also examined. The bi-directional prosumer-grid influence is analyzed and the origin of PQ events are estimated. Measurements-based observations revealed a shared responsibility between PV generation conditions, solar inverter operation, and the hosting power grid. Lastly, general conclusions about measurement, analysis, and mitigation are provided.
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