Node voltage control and line loss suppression using Unified Power Flow Controller on distribution system

Maekawa, Taira; Takeshita, Toru; Kunii, Yasuyuki

doi:10.1109/icrera.2015.7418573

Cited by 4 publications

(1 citation statement)

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“…These include using dynamic voltage restorers (DVR) [4], which use a transformer with one winding connected in series with the line and the other winding connected to a power converter which can inject a controlled voltage when required. Unified Power Flow Controllers (UPFC), which have similarities to both DVRs and STATCOMs, have also been suggested for distribution network control [5], [6]. D-STATCOMs, which are STATCOMs optimised for use on distribution systems, have also been proposed [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

Utilizing Spare Inverter Capacity for Distribution Grid Voltage Support: An Adaptive Control Scheme

Rose

Sumner

Thomas

2018

2018 7th International Conference on Renewable Energy Research and Applications (ICRERA)

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Grid-tie inverters for connecting renewables to the grid are generally rated based on the peak power rating of the sources feeding them but, owing to the inherent variability and uncontrollability of most renewable energy sources, much of the inverter capacity is not used the majority of the time. This results in significant spare converter capacity that may be used for other purposes. This paper proposes an adaptive, plug-and-play means of utilizing this unused capacity for controlling reactive power, with the aim of providing grid voltage support on distribution networks, where reactive power control has traditionally not been economical. The method described uses an active impedance estimation algorithm to determine the gains required for reactive power controllers without requiring manual tuning of large numbers of converters. Both simulated and experimental results validating the techniques described are provided.

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