The conventional volt-watt control method used in PV inverters to overcome the over-voltage problems can result in significant unfairness in the curtailed active power in PV-rich distribution networks. In this paper, a novel decentralized control strategy is presented to improve fairness in the curtailed active power of inverters. In this strategy, first, each PV inverter calculates the ratio of its node voltage magnitude change to its injected active power. Then, the calculated value by the farthest PV inverter of each phase from the transformer is shared with other PV inverters connected to the same phase. Using this value, PV inverters adjust their control parameters of an enhanced volt-var-watt control method. The performance of this method is evaluated using various simulation studies by making reference to the IEEE European low-voltage test feeder and considering different levels of PV system integration. It is shown that the proposed control strategy can significantly improve the fairness of the active power curtailment among PV inverters. Finally, the result of a comparative analysis between the proposed strategy and two state-of-the-art communication-based methods is reported.

中文翻译：

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分散控制策略提高低压配电网光伏逆变器有功限电公平性


光伏逆变器中用于克服过电压问题的传统伏瓦控制方法可能会导致光伏发电丰富的配电网络中的有功功率削减显着不公平。本文提出了一种新颖的分散控制策略，以提高逆变器有功功率削减的公平性。在该策略中，首先，每个光伏逆变器计算其节点电压幅度变化与其注入的有功功率的比率。然后，每相距变压器最远的光伏逆变器计算出的值将与同相连接的其他光伏逆变器共享。利用该值，光伏逆变器调整其增强型伏-无功-瓦控制方法的控制参数。通过参考 IEEE 欧洲低压测试馈线并考虑不同级别的光伏系统集成，使用各种模拟研究来评估该方法的性能。结果表明，所提出的控制策略可以显着提高光伏逆变器间有功限电的公平性。最后，报告了所提出的策略和两种最先进的基于通信的方法之间的比较分析结果。