Behavior of a photovoltaic inverter under sudden increase in irradiance due to reflection in clouds

Inzunza, Rubén; Tawada, Yoshihiro; Furukawa, M.; Shibata, Naoya; Sumiya, T.; Tanaka, Tsuguhiro; Kinoshita, Masahiro

doi:10.1109/icrera.2015.7418531

Cited by 6 publications

(2 citation statements)

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“…The relationship between changes in reactive power and changes in voltage is given in (1). Manipulating to determine the required reactive current to produce a desired change in voltage gives (2).…”

Section: A Grid Voltage Controllermentioning

confidence: 99%

“…These issues include both long-and short-term voltage variations, a commonly reported concern of power engineers and caused by the inherent variability and limited controllability of renewable sources. Voltage quality issues include dips, swells and flicker, which are transient in nature, and may be caused, for instance, by sudden gusts of winds in wind power systems [1] or reflections on to photovoltaic (PV) generation [2]. Long-term variations in voltage may be caused by natural cycles in generation, such as PV generation, which will peak around midday and drop to zero during the night.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: A Grid Voltage Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%