Power quality analyses of a large scale photovoltaic system

Block, Pedro A. B.; Salamanca, Henry L. L.; Teixeira, Marco Antônio Carvalho; Dahlke, Diogo B.; Shiono, Otavio M.; Donadon, Antonio R.; Camargo, J.

doi:10.1109/irec.2014.6826946

Cited by 23 publications

(19 citation statements)

References 5 publications

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“…Connection to a weak and distorted electrical grid can be considered an extrinsic effect on the output waveform of a PV plant. A distorted voltage acts like a disturbance in the inverter control system, causing distortion of the current waveform generated by the inverter [10].…”

Section: Theorymentioning

confidence: 99%

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Power Quality Issues Concerning Photovoltaic Generation in Distribution Grids

Niitsoo

Jarkovoi²,

Taklaja³

et al. 2015

SGRE

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Unregulated utilization of renewable generation including residential photovoltaic (PV) systems can have a significant impact on load characteristics in distribution networks. For improving PV generation capabilities, power quality aspects have to be coordinated with present load characteristics. This paper discusses the harmonic content of PV generation and the influence to power quality indicators in residential distribution networks. PV generation measurement results including current harmonic amplitude and phase angle values are presented. Results of different modelling scenarios are analysed and a simplified model of harmonics in PVs is offered. The results of the study showed a moderate additional harmonic distortion in residential load current and voltage distortion at the substation's busbar when PVs were added. Novelty of the paper is that harmonic current values at higher orders are presented and analysed. The results pointed out in this paper could be further used for modelling the actual harmonic loads of the PVs in distribution networks.

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Section: Theorymentioning

confidence: 99%

“…Nevertheless, THD is notably reduced as the output active power of the PV Inverters increases and reaches its nominal value. The intrinsic characteristics of the control circuit and nonlinear components of PV inverters may explain the current distortion behaviour in the low power generation stages [10] [11].…”

Section: Theorymentioning

confidence: 99%

Power Quality Issues Concerning Photovoltaic Generation in Distribution Grids

Niitsoo

Jarkovoi²,

Taklaja³

et al. 2015

SGRE

View full text Add to dashboard Cite

show abstract

“…sunrise, sunset, cloudy days), current THD values can increase rapidly since the THD factor is inversely proportional to the output active power of the PV inverters. Nevertheless, THD is notably reduced as the output active power of the PV inverters increases and reaches its nominal value [13]- [15].…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Power Quality Issues Concerning Photovoltaic Generation and Electrical Vehicle Loads in Distribution Grids

Niitsoo¹,

Taklaja²,

Palu³

et al. 2015

SGRE

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The high utilization level of renewable generation including residential photovoltaic (PV) systems together with the uncontrolled charging of electric vehicles (EVs) can have a significant impact on load characteristics in distribution networks. Harmonic content of PV generation, EV charging loads, and their influence on power quality indicators in residential distribution networks are discussed in this paper. For investigating likely power quality scenarios, PV generation and EV charging measurement results including current harmonic amplitude and phase angle values are used and compared with present load characteristics. Different modelling scenarios are analysed and a simplified model of harmonics in PVs and EVs is offered. The results of the study show moderate additional harmonic distortion in residential load current and voltage distortion at the substation's busbar when PV generation and EV loading are added. The scenarios presented in this paper can be further used for modelling the actual harmonic loads of the PVs and EVs in distribution networks.

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“…Other analyzes were presented in [2][3][4][5][6][7][8][9][10][11][12][13][14][15], and were focused on the impact of distributed generation sources (photovoltaic generators, wind turbines) upon the power system. The power flows and power losses, power quality or reliability level were analyzed in these papers.…”

Section: Introductionmentioning

confidence: 99%

Impact of a photovoltaic power plant connection on the power system

Dulău

Abrudean

Bică

2015

2015 IEEE Eindhoven PowerTech

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This paper presents the situation of the photovoltaic power plants nationwide (Romania) and in particular the situation of the photovoltaic (PV) power plants in Mureş county. It also describes the minimal technical conditions that a PV power plant must fulfill before it is connected to the national grid. A particular case study consists of the impact that the PV power plant in Chirileu has on the Medium Voltage line Ungheni-Cipău and the interconnection High Voltage station in Ungheni. The case study contains an analysis of the voltage drops in predefined points, power flows with and without the PV power plant connected, respectively active power losses across the line. The study will be performed upon the photovoltaic power plant with an installed capacity of 3.2 MW connected to the 20 kV Ungheni-Cipău overhead power line and supplied from 220/110/20 kV Ungheni system station. Index Terms-impact on power system, photovoltaic power plant, power flow, voltage level.I.

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Power quality analyses of a large scale photovoltaic system

Cited by 23 publications

References 5 publications

Power Quality Issues Concerning Photovoltaic Generation in Distribution Grids

Power Quality Issues Concerning Photovoltaic Generation in Distribution Grids

Power Quality Issues Concerning Photovoltaic Generation and Electrical Vehicle Loads in Distribution Grids

Impact of a photovoltaic power plant connection on the power system

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