Assessing the power quality behaviour of high photovoltaic (PV) penetration levels inside the distribution network

Patsalides, Minas; Georghiou, George E.; Stavrou, Andréas; Efthimiou, Venizelos

doi:10.1109/pedg.2012.6254080

Cited by 14 publications

(17 citation statements)

References 22 publications

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“…The PV system model presented by the authors in [2] is used to evaluate the levels of voltage variation in a standard distribution set up with PV generation. The validated PV system model was inserted in an industrial distribution grid topology, the dynamics of which are known and can be represented with the help of Thevenin's theorem.…”

Section: Methodsmentioning

confidence: 99%

“…In order to get accurate and reliable results that will facilitate the understanding of the effects of high PV penetration, appropriate models for both the PV systems and the distribution grid must be available. Previous research work done by the authors on PV system modeling is used [2] in combination with the development of a distribution grid model to set the correct framework for investigating the effects of high PV penetration levels. A simple and straightforward method for modeling the distribution grid dynamics based on Thevenin's theorem is adopted in this work.…”

Section: Introductionmentioning

confidence: 99%

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Thevenin equivalent circuit for the study of high photovoltaic penetration in distribution grids

Patsalides

Georghiou

Stavrou

et al. 2013

IEEE PES ISGT Europe 2013

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The electricity grid is unidirectional operating in a passive way and consequently it is not yet ready to accept high penetration of renewable energy sources (RES). Further research is required to assess the impact of distributed Photovoltaic (PV) generation on power quality and establish the necessary measures for the restructuring of the electricity grid to ensure its optimum operation. In this paper, appropriate models are developed in order to assess the effects of PV generation. Thevenin's theorem is used to develop the equivalent circuit representing the exact distribution grid behaviour. The Thevenin equivalent circuit in combination with a verified PV system model are employed to study the power quality response of the distribution grid in the presence of PV via simulation and the results are compared to actual measurements yielding good agreement.Index Terms-PV system model, power quality, voltage levels, distribution grid model, Thevenin equivalent circuit.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thevenin equivalent circuit for the study of high photovoltaic penetration in distribution grids

Patsalides

Georghiou

Stavrou

et al. 2013

IEEE PES ISGT Europe 2013

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“…Analytical method covers closed-form equations derived for typical feeder designs and different load allocation patterns. Minas Patsalides develops the high PV penetrations a detailed PV system model and regulates the model according to the data from true PV system [21]. The PV system model was inserted into industrial area and residential area to simulate its behavior.…”

Section: Harmonic Constraints Determine Penetration Levelmentioning

confidence: 99%

Research on penetration level of distributed generation in distribution network

Su¹,

Liu²,

Bai³

et al. 2015

Proceedings of the First International Conference on Information Sciences, Machinery, Materials and Energy

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Abstract. To ensure safety and stability of distribution network, the maximum allowable capacity of DG has a certain limit. The maximum allowable capacity can be defined penetration level. The paper first analyses the influence caused by DG on power flow, network loss, node voltage, power quality, current protection and anti-islanding, then introduces some typical evaluation methods for penetration level of distributed generation in distribution network, these methods and conclusions can provide some references for DG planning.

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“…As an example, in the last 6 years, over one million rooftop PVs have been installed in Australia of which over 90% is single-phase PVs in the residential premises [1]. However, the increasing penetration level of these units in low voltage (LV) distribution networks has imposed several technical problems such voltage rise issues [2,3] and power quality problems [4,5]. The technical and economic impacts of imposed over-voltages by rooftop PVs in PV dominated distribution feeders is assessed in [2][3][4][5] and several improvement techniques are proposed in [6] to mitigate or minimize these problems.…”

Section: Introductionmentioning

confidence: 99%

“…However, the increasing penetration level of these units in low voltage (LV) distribution networks has imposed several technical problems such voltage rise issues [2,3] and power quality problems [4,5]. The technical and economic impacts of imposed over-voltages by rooftop PVs in PV dominated distribution feeders is assessed in [2][3][4][5] and several improvement techniques are proposed in [6] to mitigate or minimize these problems. Furthermore, the sudden variations of voltage in PV dominated feeders, as the result of clouding, has been studied in [7] where some improvement methods are proposed in [8] to overcome rapid voltage fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Disconnection of single-phase rooftop PVs after short-circuit faults in residential feeders

Yengejeh

Shahnia

Islam

2016

Australian Journal of Electrical and Electronics Engineering

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This paper presents an analysis on the disconnection time of single-phase rooftop photovoltaic systems (PVs), located in a three-phase four-wire low voltage distribution feeder, after a single-phase and a three-phase short-circuit fault on the low voltage feeder. The paper aims to evaluate and discuss the disconnection time and disconnection sequence of PVs in a network with 100% PV penetration level to evaluate the islanding issues that are related to the safety of people and the damage of electrical apparatus. The impact of different parameters such as the location of the fault, impedance of the fault and the ratio of PVs generation capacity to the load demand are contemplated in the analysis. Furthermore, the influence of the network earthing in the form of multiple earthed neutral and non-effectively grounded systems are evaluated on the PVs disconnection time. This research intends to figure out the conditions under which the PVs in the feeder may fail to disconnect after a singlephase or three-phase fault and continue to feed the fault.

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Assessing the power quality behaviour of high photovoltaic (PV) penetration levels inside the distribution network

Cited by 14 publications

References 22 publications

Thevenin equivalent circuit for the study of high photovoltaic penetration in distribution grids

Thevenin equivalent circuit for the study of high photovoltaic penetration in distribution grids

Research on penetration level of distributed generation in distribution network

Disconnection of single-phase rooftop PVs after short-circuit faults in residential feeders

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