High photovoltaic (PV) system generation in low‐voltage feeders can cause voltage rise especially in low demand conditions. The conventional way of coping with voltage violation is disconnection of the PV systems or curtailment of the generated power. To address this issue, a novel configuration for voltage management in a radial feeder via regulated reactive power capability in PV inverters is presented. The novelty of the proposed configuration is based on the fact that all the PV inverters with the ability to consume reactive power are involved in voltage regulation without being centrally controlled. In order to apply the configuration, a reference voltage is initially estimated for each PV system, and the PV inverters are calibrated accordingly. These settings depend on the feeder topology and can be calculated by the distribution network operator with a simple power flow modelling tool. Finally, this paper presents a sensitivity analysis in order to examine how reactive power consumption in a single inverter influences PV penetration and inverter sizing at various PV topologies along the feeder. Copyright © 2014 John Wiley & Sons, Ltd. This paper presents a novel voltage regulation in a low‐voltage radial feeder at high photovoltaic (PV) deployment. A configuration for voltage control is developed, based on reactive power consumption capability in PV inverters. All the inverters are involved in the voltage regulation with no need of central control in the feeder. Finally, a sensitivity analysis assesses the effect of various PV topologies on the PV penetration level.
Reactive power consumption in photovoltaic inverters: a novel configuration for voltage regulation in low‐voltage radial feeders with no need for central control
Progress in photovoltaics ; 23 , 5
2015
Aufsatz (Zeitschrift)
Englisch
BKL: | 53.36 Energiedirektumwandler, elektrische Energiespeicher |
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