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Assessment techniques of the impact of grid-tied rooftop photovoltaic generation on the power quality of low voltage distribution network -A review

机译：并网屋顶光伏发电对低压配电网电能质量影响的评估技术-综述

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摘要

Many countries have experienced a surge in the level of the penetration of solar PV systems in the last decade. A huge portion of the newly deployed PV systems are connected to low voltage Grid. High Penetration of PVs at this level could potentially disrupt the normal operation of distribution network. A major concern is the impact of these units on power quality indices. Namely, photovoltaic panels could increase the level of voltage and current unbalance, deteriorate harmonic distortion and cause the voltage rise. These concerns may prohibit higher pentation levels of PVs. Thus, proper assessment techniques are vital for network operators for the planning and decision-making process. On the other hand, many characteristics of PV system are inherently uncertain. These uncertainties should be properly modeled in assessment framework. The main effort of research communities is to propose new methodologies that could model the uncertainty of solar power generation and stochastic assessment methods that could accurately estimate the state of the operation of the network with different levels of penetration of solar photovoltaics. This paper provides a comprehensive review of recent publications and trend of research activities regarding methods of representing uncertain variables and stochastic assessment techniques for power system quality analysis.
机译：在过去十年中，许多国家/地区的太阳能光伏系统渗透率激增。新部署的光伏系统的很大一部分都连接到低压电网。 PV的高渗透率可能会破坏配电网络的正常运行。主要关注的是这些单元对电能质量指数的影响。即，光伏面板会增加电压和电流不平衡的水平，恶化谐波失真并引起电压上升。这些顾虑可能会禁止PV的更高喷丝率。因此，适当的评估技术对于网络运营商的规划和决策过程至关重要。另一方面，光伏系统的许多特性本质上是不确定的。这些不确定性应在评估框架中正确建模。研究社区的主要工作是提出可以对太阳能发电的不确定性进行建模的新方法，以及可以准确估计具有不同水平的太阳能光伏发电量的网络运行状态的随机评估方法。本文对有关电力系统质量分析的不确定变量表示方法和随机评估技术的最新出版物和研究活动趋势进行了全面回顾。

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