Accommodating increased penetration of renewable energy resources like solar Photo-Voltaics (PV) imposes severe challenges on the voltage regulation of the traditionally designed distribution system. Battery Energy Storage Systems (BESS) can mitigate voltage regulation issues, as they can act quickly in response to the uncertainties introduced due to solar PV. However, if there is no coordination between existing devices such as On Load Tap Changing Transformers (OLTC) and BESS, then BESS takes all the burden and is generally over-utilized. The uncoordinated control schematic shall also lead to underutilization of OLTC. Hence, in this paper, a coordinated control strategy to control BESS along with OLTC is proposed to warrant acceptable voltage magnitudes across the distribution feeder. The formulated optimization problem aims to mitigate the voltage deviation from its required values while reducing the number of changes in tap positions and also enhancing the battery life. The improvement in voltage regulation and optimal utilization of resources by using the proposed coordinated scheme over the traditional uncoordinated scheme is demonstrated for the IEEE 13 bus and 33 bus distribution systems in MATLAB/ Simulink.

中文翻译：

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高光伏渗透率配电网有载分接开关与储能协调调压


随着太阳能光伏 (PV) 等可再生能源的渗透率不断提高，传统设计的配电系统的电压调节面临着严峻的挑战。电池储能系统 (BESS) 可以缓解电压调节问题，因为它们可以快速响应太阳能光伏发电带来的不确定性。然而，如果现有设备（例如有载调压变压器 (OLTC) 和 BESS）之间没有协调，则 BESS 会承担所有负担，并且通常会被过度利用。不协调的控制原理图也会导致 OLTC 的利用不足。因此，本文提出了一种控制 BESS 和 OLTC 的协调控制策略，以保证配电馈线的电压幅度可接受。制定的优化问题旨在减轻电压与其所需值的偏差，同时减少抽头位置的变化次数并延长电池寿命。在 MATLAB/Simulink 中，针对 IEEE 13 总线和 33 总线配电系统，展示了使用所提出的协调方案相对于传统的非协调方案在电压调节和资源优化利用方面的改进。