Abstract The rapid expansion of distributed energy resources in the low voltage grid causes voltage limit violations, especially in rural areas with little electric load. To solve this issue without costly grid reinforcement, one approach is the use of smart devices such as line-voltage-regulators. However, the majority of these devices carry out stepped voltage adjustments, which cause a negative effect on the dynamic voltage characteristic. For this reason, this paper deals with a novel line-voltage-regulator and its power quality optimized control. The novel setup enables a continuous voltage regulation in a robust way by using variable inductors. The control design focuses on mitigating side-effects like harmonic distortion emission and increased grid impedance. Finally, a laboratory analysis evaluates the novel line-voltage regulator in comparison to a stepped one with regard to power quality.

中文翻译：

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根据电能质量优化线路电压调节器

摘要 低压电网中分布式能源的快速扩张导致电压超限，特别是在电力负荷较小的农村地区。为了在不进行昂贵的电网加固的情况下解决这个问题，一种方法是使用智能设备，例如线路电压调节器。然而，这些器件中的大多数进行阶跃电压调整，这对动态电压特性造成负面影响。为此，本文讨论了一种新型的线电压调节器及其电能质量优化控制。这种新颖的设置通过使用可变电感器以稳健的方式实现连续电压调节。控制设计侧重于减轻谐波失真发射和电网阻抗增加等副作用。最后，