A case study of using OLTC to mitigate overvoltage in a rural european low voltage network

Mawarni, Delina Endang; Ali, M. M. Viyathukattuva Mohamed; Nguyen, Phuong H.; Kling, W.L.; Jerele, Marjan

doi:10.1109/upec.2015.7339875

Cited by 18 publications

(11 citation statements)

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“…The authors of [3,5,9,10,14,24,44,48,[54][55][56][57][58][59][60][61][62][63][64] defined PV HC with reference to the peak load of the feeder as the ratio of the maximum capacity of the PV installation to the maximum load of the feeder. In [65], the authors investigated the HC of a rural European three-phase balanced system for two types of simulations that is one-time slot simulation and time series simulation and an estimated HC of 86% of peak load has been observed. Additionally, the HC based on the peak load of a real USA feeder is found to be 35% [7] and 86% HC value is noticed for an 11.4 kV MV distribution feeder in Taiwan [2].…”

Section: Peak Loadmentioning

confidence: 99%

Review on the PV Hosting Capacity in Distribution Networks

2020

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The increasing penetration of Photovoltaic (PV) generation results in challenges regarding network operation, management and planning. Correspondingly, Distribution Network Operators (DNOs) are in the need of totally new understanding. The establishment of comprehensive standards for maximum PV integration into the network, without adversely impacting the normal operating conditions, is also needed. This review article provides an extensive review of the Hosting Capacity (HC) definitions based on different references and estimated HC with actual figures in different geographical areas and network conditions. Moreover, a comprehensive review of limiting factors and improvement methods for HC is presented along with voltage rise limits of different countries under PV integration. Peak load is the major reference used for HC definition and the prime limiting constraint for PV HC is the voltage violations. However, the varying definitions in different references lead to the conclusion that, neither the reference values nor the limiting factors are unique values and HC can alter depending on the reference, network conditions, topology, location, and PV deployment scenario.

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Section: Peak Loadmentioning

confidence: 99%

Review on the PV Hosting Capacity in Distribution Networks

2020

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“…During the normal operation, the DB voltage is greater than the difference voltage. If the difference voltage becomes greater than the DB and exceeding a certain predetermined time delay, the tap position is changed appropriately [23].…”

Section: Voltage‐violation Mitigation Strategiesmentioning

confidence: 99%

Review on voltage‐violation mitigation techniques of distribution networks with distributed rooftop PV systems

Nour

Hatata

Helal

et al. 2019

IET Generation, Transmission & Distribution

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“…The results show the high efficiency of the developed method and small differences between actual and estimated voltage values. Its use as the only means of improving voltage levels in the transformer network with OLTC was also proposed in [43]. The study determined the limit of PV connection possibilities for a given network, paying attention to the limitation of OLTC use, resulting from the possibility of undervoltage in lines without connected sources and supplied from the same transformer.…”

Section: Voltage Control In the Transformer Oltcmentioning

confidence: 99%

A Review of Voltage Control Strategies for Low-Voltage Networks With High Penetration of Distributed Generation

Janiga

2020

IAPGOS

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Deterioration of voltage conditions is one of the frequent consequences of connecting an increasing number of photovoltaic sources to the low-voltage (LV) power grid. Under adverse conditions, i.e. low energy consumption and high insolation, microgeneration can cause voltage surges that violate acceptable limits. Research shows that the increase in voltage is the main limitation for connecting new energy microsources to the LV network and forces the reconstruction of the network. An alternative to costly modernizations can be the implementation of appropriate strategies for controlling network operation to maintain the voltage at the required level. The article presents an overview of the methods and concepts of voltage control in a low-voltage network developed so far to mitigate the undesirable phenomenon of voltage boosting. The focus was mainly on local methods—not requiring communication infrastructure—as best suited to the conditions of Polish distribution networks. Gathering the results of many tests and simulations carried out in different conditions and on different models allowed for the formulation of general conclusions and can be a starting point for further research on a control method that can be widely used in the national power system.

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A case study of using OLTC to mitigate overvoltage in a rural european low voltage network

Cited by 18 publications

References 1 publication

Review on the PV Hosting Capacity in Distribution Networks

Review on the PV Hosting Capacity in Distribution Networks

Review on voltage‐violation mitigation techniques of distribution networks with distributed rooftop PV systems

A Review of Voltage Control Strategies for Low-Voltage Networks With High Penetration of Distributed Generation

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