In this study, we propose a new optimization method to determine the control parameters of a step voltage regulator (SVR) to maximize its voltage control characteristic in distribution networks (DNs) with photovoltaic systems. Considering the service life of an SVR, the proposed method evaluates the expected number of tap operations and the voltage control performance based on the past voltage measurements obtained with sensors in the DN. Subsequently, the time series of two control parameters, that is, the reference voltage and the dead bandwidth, are determined for the most improved voltage control characteristic of the SVR, maintaining the number of tap operations within the upper limit. Voltage control simulation using a realistic 6.6‐kV DN model is conducted to show that the proposed method significantly reduces the voltage violation compared with the conventional SVR control using fixed parameters, as well as the alternative SVR operation developed in our previous study, in which the reference voltage was temporally updated. In addition, the simulation results demonstrate that the proposed method realizes efficient tap operations to mitigate the voltage violation, whereas the conventional method requires a much larger number of tap operations to mitigate the voltage violation to the same degree. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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SVR控制参数的动态优化，以提高配电网电压控制的抽头运行效率

在这项研究中，我们提出了一种新的优化方法，用于确定步进电压调节器（SVR）的控制参数，以在具有光伏系统的配电网（DN）中最大化其电压控制特性。考虑到SVR的使用寿命，提出的方法基于使用DN中的传感器获得的过去电压测量值来评估抽头操作的预期次数和电压控制性能。随后，确定两个控制参数的时间序列，即参考电压和空载带宽，以实现SVR的最大电压控制特性，同时将抽头操作的次数保持在上限内。使用逼真的电压控制仿真6。进行了6kV DN模型，表明与使用固定参数的常规SVR控制以及我们先前研究中开发的替代SVR操作相比，该方法大大降低了电压违规，在该研究中，参考电压得到了暂时更新。另外，仿真结果表明，所提出的方法实现了有效的抽头操作以减轻电压违规，而传统方法需要大量的抽头操作以将电压违规减轻到相同程度。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。另外，仿真结果表明，所提出的方法实现了有效的抽头操作以减轻电压违规，而传统方法需要大量的抽头操作以将电压违规减轻到相同程度。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。另外，仿真结果表明，所提出的方法实现了有效的抽头操作以减轻电压违规，而传统方法需要大量的抽头操作以将电压违规减轻到相同程度。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。