Analysis of the power quality and the impact of photovoltaic power plant operation on low-voltage distribution network

Kopicka, Marek; Ptacek, Michal; Toman, Petr

doi:10.1109/pq.2014.6866792

Cited by 20 publications

(8 citation statements)

References 5 publications

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“…Unfortunately, most of the available articles concern the impact of power plants on the low-voltage network. According to research conducted by Kopicka et al [46], small photovoltaic power plants cause an increase in the voltage distortion coefficient and significantly affect the voltage value in the low-voltage network. Similarly, in [47], it was shown that power generation in a photovoltaic installation increases the voltage distortion occurring in the network (regardless of the voltage level).…”

Section: Voltage Waveform Distortionmentioning

confidence: 99%

Analysis of the Impact of a Photovoltaic Farm on Selected Parameters of Power Quality in a Medium-Voltage Power Grid

Hołdyński,

Skibko,

Firlit

et al. 2024

Energies

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Over the last few years, a dynamic increase in the installed capacity of distributed energy sources has been observed, with the largest share being photovoltaic sources. The power grid is a system of connected vessels, and changing the structure of electricity production has a specific impact on the operation of this network, which makes it necessary to study the impact of the sources on the power system. The current and projected increase in the number of connected installations will make the issues of interaction and cooperation of distributed sources with the network extremely important. The article presents an analysis of the impact of a photovoltaic farm on selected parameters of the quality of electricity supply. This analysis was made on the basis of simulation results in a computer program and measurement tests carried out on a real photovoltaic farm with a capacity of 1.8 MW connected to the medium voltage power grid. The impact of the farm-generated power on the values of fundamental indicators of the quality of electricity supply, such as voltage deviations, voltage asymmetry factors, and voltage distortions factors, is presented. These relationships were determined based on the correlation and regression analysis of individual electrical quantities.

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Section: Voltage Waveform Distortionmentioning

confidence: 99%

Analysis of the Impact of a Photovoltaic Farm on Selected Parameters of Power Quality in a Medium-Voltage Power Grid

Hołdyński,

Skibko,

Firlit

et al. 2024

Energies

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“…Thus, the voltage has measured at the PCC and connected to the digital flicker meter to calculate the flicker severity. The simulation was run for more than two hours to fulfill the GCs and standards requirements, which strictly require over a 600 s (10 min) period and 7200 s (2 h) period to measure the P st and P lt , respectively [29,48]. In order to assess the DVR ability to reduce the flicker severity at the PCC of PVPP connected MV of the grid side, a flicker meter has been developed.…”

Section: Grid Sidementioning

confidence: 99%

Power Quality Assessment of Grid-Connected PV System in Compliance with the Recent Integration Requirements

et al. 2020

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The generation and integration of photovoltaic power plants (PVPPs) into the utility grid have increased dramatically over the past two decades. In this sense, and to ensure a high quality of the PVPPs generated power as well as a contribution on the power system security and stability, some of the new power quality requirements imposed by different grid codes and standards in order to regulate the installation of PVPPs and ensure the grid stability. This study aims to investigate the recent integration requirements including voltage sag, voltage flicker, harmonics, voltage unbalance, and frequency variation. Additionally, compliance controls and methods to fulfill these requirements are developed. In line with this, a large-scale three-phase grid-connected PVPP is designed. A modified inverter controller without the use of any extra device is designed to mitigate the sage incidence and achieve the low-voltage ride-through requirement. It can efficiently operate at normal conditions and once sag or faults are detected, it can change the mode of operation and inject a reactive current based on the sag depth. A dynamic voltage regulator and its controller are also designed to control the voltage flicker, fluctuation, and unbalance at the point of common coupling between the PVPP and the grid. The voltage and current harmonics are reduced below the specified limits using proper design and a RLC filter. The obtained results show that the proposed controller fulfilled the recent standard requirements in mitigating power quality (PQ) events. Thus, this study can increase the effort towards the development of smooth PVPP integration by optimizing the design, operation and control strategies towards high PQ and green electricity.

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“…According to [16], PV plants should not seriously degrade quality of supply with regard to harmonics. In [17], measurements in LV grid in PCC of PV plant connection are performed. Conclusion is that influence of PV plant in PCC is marginal in case of flicker and harmonics.…”

Section: Influence Of Photovoltaic Plant On Power Qualitymentioning

confidence: 99%

PV Plant Influence on Distribution Grid in Terms of Power Quality Considering Hosting Capacity of the Grid

Ramljak¹,

Bago²

2019

Electric Power Conversion

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Photovoltaic plants penetrate rapidly in distribution grid. Problems with their integration in distribution grid can exist in terms of load flow, protection settings, power quality, etc. This chapter analyzes influence of photovoltaic plants connection in distribution grid (0.4 and 10 kV voltage level) on power quality. The main focus will be on influence of photovoltaic plant connection point on distribution grid (hosting capacity-strength of the grid) in terms of power quality. Norms and regulations about influence of photovoltaic plants on distribution grid in terms of power quality will be analyzed. Influence of photovoltaic plants on distribution grid in theoretical aspects will be presented. Several case studies then will be described. Those case studies present different connection points of photovoltaic plants on distribution grid. Comparison of theoretical assumptions and real case studies will be compared. Some observations of real case studies and their impact on theoretical aspects, norms, and regulations about photovoltaic plant influence on distribution grid will be introduced.

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Analysis of the power quality and the impact of photovoltaic power plant operation on low-voltage distribution network

Cited by 20 publications

References 5 publications

Analysis of the Impact of a Photovoltaic Farm on Selected Parameters of Power Quality in a Medium-Voltage Power Grid

Analysis of the Impact of a Photovoltaic Farm on Selected Parameters of Power Quality in a Medium-Voltage Power Grid

Power Quality Assessment of Grid-Connected PV System in Compliance with the Recent Integration Requirements

PV Plant Influence on Distribution Grid in Terms of Power Quality Considering Hosting Capacity of the Grid

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