Estimation of Hosting Electric Vehicles Capacity in the Transformers on the Island of Crete

Dimitropoulou, M.; Tsikalakis, Antonis G.; Gigantidou, Antiopi; Thalassinakis, E.; Pylarinos, D.

doi:10.22618/tp.ei.20163.389020

Cited by 4 publications

(4 citation statements)

References 2 publications

(2 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At this point, previous research [13] about the contribution of local RES production to power generation and the corresponding amount of EV hosting in the local island's power system should be mentioned. If the total capacity of RES, currently at 300 MW, is exploited based on the calculations of the total capacity of the local grid, the number of charging EVs that could simultaneously penetrate the power system of Crete amounts to 131,324 slowcharging EVs or 9718 fast-charging EVs.…”

Section: B the Case Of Transformer Faultmentioning

confidence: 99%

See 1 more Smart Citation

Grid Operation Assessment under a Specific EV Chargers Deployment Plan in the City of Heraklion

et al. 2021

View full text Add to dashboard Cite

The development of electric vehicles (EVs) as part of the electrification of the transportation sector plays a significant role in energy transition to a low-carbon and highly renewable society. The use of EVs has been promoted through the development of inclusive strategies for electromobility in the recent years. Apart from actions directed and funded by the European Union, national strategies have also been employed to support electromobility. Such a strategic plan has already been enacted by the Hellenic Ministry of Environment and Energy, funding municipalities to prepare siting and sizing plans for electric vehicle chargers. In this paper, the final study of this strategic plan for the municipality of Heraklion in Crete is used as a case study to investigate the effect of EV chargers on the operation of the Cretan power system. Their selected siting points are evaluated by performing a power flow analysis at the level of 150 kV. Thus, they are aggregated in each 20 kV/150 kV distribution substation of the electrical grid with the aim of investigating their effect on substation loading and transmission line losses. Generally, extensive fast charging should be avoided to minimize the risk of sudden stress of the existing cities’ grids and control strategies should be implemented to mitigate the need for upscale substation equipment or even postpone reinforcements.

show abstract

Section: B the Case Of Transformer Faultmentioning

confidence: 99%

“…However, the adoption of EVs on a large scale is expected to give rise to both challenges and opportunities from the technical and economic perspectives [12]. Among these, an increased number of EVs simultaneously charging using an electrical grid also poses a challenge for the power system operation [13,14].…”

Section: Introductionmentioning

confidence: 99%

Grid Operation Assessment under a Specific EV Chargers Deployment Plan in the City of Heraklion

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The energy production balance of Crete is as shown in Figure 4 [21]. More details about the distribution of demand in each one of the four prefectures of the island can be found in [38].…”

Section: The Power System Of Cretementioning

confidence: 99%

“…The energy production balance of Crete is as shown in Figure 4 [21]. More details about the distribution of demand in each one of the four prefectures of the island can be found in [38]. The latest overview of the autonomous power system of Crete is based on actual operational data from the SCADA system of HEDNO SA.…”

Section: The Power System Of Cretementioning

confidence: 99%

Improving Reliability Indices of the Autonomous Power System of Crete Island Utilizing Extended Photovoltaic Installations

et al. 2019

Self Cite

View full text Add to dashboard Cite

Renewable energy sources (RES) have significantly helped in meeting the electricity demand of Crete, with their share in the energy balance to account for about 25% of the annual electricity production for the past five years. The contribution of photovoltaics (PVs) has been especially significant for the past three years, offering 10% in the peak demand, during summertime. This paper investigates what the capacity credit would be, i.e., up to what extent increasing existing PV capacity by about 20% can be considered as certain, to avoid installing thermal power units. In order to do so, probabilistic techniques have been applied to quantify the load that the installed thermal units in the Cretan power system should be able to meet at any time. In addition, the effect of the additional PV capacity to power system's reliability is evaluated, introducing a new reliability index and taking into account actual data, regarding the planned and unplanned thermal units' maintenance. Two scenarios have been examined using actual hourly data for load demand, PV, and wind production from the island power system of Crete. In the first scenario, the calculations were carried out considering the operation of the Cretan power system in its current state, while in the second scenario it was assumed that the PV production has been increased by 20%. Furthermore, we examine how the maximum value of capacity credit can be achieved as the PV installations are extended. In this regard, there is an upper limit of the additional PV capacity that leads to the maximum value of capacity credit.Energies 2020, 13, 64 2 of 15 much widespread in any power system as PVs as they are not modular with the exception of solar dishes [9] and face more sitting constraints than PVs. This is the reason for focusing on PVs and their potential reliability impact on island power systems like Crete.There have been numerous studies regarding the potential benefits of PVs already since 90 s. In [10] the value of PVs for voltage support, loss, and peak reduction, distribution systems are studied while comparisons are made with the conventional and widely used methods for voltage control and loss minimization. In another study [11], the value of PVs for society have been examined from both the consumer and the utility perspective, claiming that the decentralized PV systems have a higher value for the society due to the fact that the customers are involved in their own electricity supply. Generally, the presence of solar electricity resources, such as any other distributed generation, can eliminate or delay the need for investments on transmission or distribution grid level [12]. According to a past study [13], strategically sited PVs provide grid support to substation transformers by reducing their oil temperature due to the lower demand caused by PV.PVs have greatly helped in electrifying rural areas such as in middle northeast Africa and southeast Asia countries [14], Honduras [15], and desert regions [16], as an alternative to grid extension or fossil fuels....

show abstract

An Optimization-based Approach for the Distribution Network Electric Vehicle Hosting Capacity Assessment

Sheng

et al. 2022

2022 China Automation Congress (CAC)

View full text Add to dashboard Cite

Estimation of Hosting Electric Vehicles Capacity in the Transformers on the Island of Crete

Cited by 4 publications

References 2 publications

Grid Operation Assessment under a Specific EV Chargers Deployment Plan in the City of Heraklion

Grid Operation Assessment under a Specific EV Chargers Deployment Plan in the City of Heraklion

Improving Reliability Indices of the Autonomous Power System of Crete Island Utilizing Extended Photovoltaic Installations

An Optimization-based Approach for the Distribution Network Electric Vehicle Hosting Capacity Assessment

Contact Info

Product

Resources

About