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DEVELOPMENT OF INNOVATIVE VOLTAGE CONTROL FOR DISTRIBUTION NETWORKS WITH HIGH PV PENETRATION

机译:高PV穿透率的配电网新型电压控制技术的发展。

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The voltage rise caused by PV power infeed is one of the main network constraints limiting the PVpenetration in distribution networks. In this paper a local voltage control approach for photovoltaic inverters based onreactive power management is proposed and investigated into detail. Through a parametric study, various invertersettings are considered and compared for a real medium voltage network with a high PV penetration level and forwhich a demonstration is planned within the project MetaPV [1] [2]. The purpose of this work is to investigate thesuitability of such control concepts to compensate the voltage rise caused by the PV power infeed and to providesome guidance on the adjustment of the settings of such control mechanisms. In order to assess the performance ofthe control concept with different settings, extensive load flow simulations have been performed for a voltagedependantreactive power control (Q(V) characteristics) on the basis of 15 minutes profiles. As a result, voltage timeseriesover a period of one year are obtained for each case and analysed into details. Apart from the voltage profiles,other features such as network losses and reactive energy import have been quantified since they are also ofnoticeable importance for network operators. The simulation results show that suitable settings are necessary in orderto maintain the voltage within the prescribed limits. A comparison between the considered cases shows that reactivepower control Q(V) with a power factor down to 0,9 is necessary in order to achieve satisfying results. The use of adead-band is recommended for the voltage dependant reactive power control in order to limit the losses and reactiveenergy import.
机译:由光伏电源馈电引起的电压上升是限制光伏发电的主要网络约束之一 在分销网络中的渗透率。在本文中,基于光伏的逆变器的局部电压控制方法 提出并进行了无功功率管理的详细研究。通过参数研究,各种变频器 对于具有较高PV渗透水平的实际中压网络,应考虑并比较设置。 在项目MetaPV [1] [2]中计划进行演示。这项工作的目的是调查 此类控制概念是否适用于补偿由PV供电引起的电压上升并提供 有关调整此类控制机制设置的一些指导。为了评估性能 具有不同设置的控制概念,针对电压相关性进行了广泛的潮流模拟 基于15分钟的曲线的无功功率控制(Q(V)特性)。结果,电压时间序列 每个案例的期限为一年,并进行了详细分析。除了电压曲线 其他特征,例如网络损耗和无功电能导入,也已被量化,因为它们也具有以下特点: 对于网络运营商而言非常重要。仿真结果表明,适当的设置是必需的 保持电压在规定的范围内。考虑案例之间的比较表明,反应性 为了获得令人满意的结果,功率因数低至0.9的功率控制Q(V)是必需的。使用一个 建议将死区用于电压相关的无功功率控制,以限制损耗和无功 能源进口。

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