Optimal transformer sizing with the presence of electric vehicle charging

Aravinthan, Visvakumar; Argade, Sachin

doi:10.1109/tdc.2014.6863156

Cited by 8 publications

(7 citation statements)

References 9 publications

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“…It should be noted that coursework programmes at the Masters level are rapidly growing in Australia, and some institutions with weak polymer representation at the undergraduate level had solid units feeding into MSc or MEng programmes. For instance, an online MEng unit on fibres and composites at the University of Southern Queensland has seen a steady growth in enrolments since its introduction in 2008 …”

Section: Assessing the Presentmentioning

confidence: 68%

“…For instance, an online MEng unit on fibres and composites at the University of Southern Queensland has seen a steady growth in enrolments since its introduction in 2008. [11] Geographically, the approximately 20 universities offering some level of tertiary polymer education at the undergraduate level are located throughout the country, within a reasonable distance of all population centres of more than 100,000 inhabitants except for Darwin. This suggests that the overwhelming majority of Australian students with an interest in polymer science are able to access tertiary education in polymers.…”

Section: Historical Overviewmentioning

confidence: 99%

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Polymer Education in Australia

Fellows

2015

Macromolecular Symposia

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Summary The coverage of polymer science and engineering in Australian universities was surveyed by contacting respondents and accessing course and unit catalogues of Australian universities. It was found that the breadth and extent of undergraduate education in polymers was not strongly correlated with the profile of polymer‐related research at an institution, and that few institutions appeared to have a systemic commitment to polymer science. Polymer education was stronger in engineering faculties than science faculties, with a majority of Australian undergraduate students studying polymers to a significant extent enrolled in BEng programs. Most responses were consistent with a decline in polymer education over the past few decades, with units of study no longer offered and the reduction of polymer content in the units that remained. It was estimated that approximately 700 students with significant exposure to polymers graduate from Australian BSc and BEng programs annually. Given the small extent of the Australian polymer industry and the large proportion of foreign‐trained professionals in Australia, the extent of polymer education in Australia appears to be adequate for the needs of the country.

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Section: Assessing the Presentmentioning

confidence: 68%

Section: Historical Overviewmentioning

confidence: 99%

Polymer Education in Australia

Fellows

2015

Macromolecular Symposia

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“…To mitigate the accelerated transformer aging caused by EV charging demand, approaches such as optimized transformer sizing and scheduling of EV charging have been proposed. Instead of simply increasing the transformer rating, an optimization study on transformer design was conducted with the objective to minimize both power loss and transformer aging [24]. Considering that the aging rate of a transformer highly depends on loading, scheduling strategies for EV charging have also been developed.…”

Section: Review Of Previous Workmentioning

confidence: 99%

“…Third, Photovoltaic (PV) integration approaches that not only contribute to sustainability but also address DT aging issues have been studied, and their effectiveness was verified using a DT aging model. Examples of solutions that have been studied in the past include the optimized design of transformers [24] and application of coordinated charging of EVs [25][26][27]. Considering the expected increase in EVs, the economic effectiveness of performing continuous retrofits of transformers would be rather limited.…”

Section: Introductionmentioning

confidence: 99%

Assessment and Mitigation of Electric Vehicle Charging Demand Impact to Transformer Aging for an Apartment Complex

2020

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Due to the increasing use of Electric Vehicles (EVs), the effect of the EV charging power demand on the reliability of the power system infrastructure needs to be addressed. In apartment complexes, which have emerged as a common residential type in metropolitan areas and highly populated districts, high charging demand could result in substantial stress to distribution networks. In this work, the effect of EV charging power demand in an apartment complex on the aging of the Distribution Transformer (DT) is studied. A methodology based on the stochastic characterization of vehicle usage profiles and user charging patterns is developed to obtain realistic EV charging demand profiles. Based on the modeled EV charging profile and the transformer thermal model, the effect of different EV penetration ratios on DT aging for an apartment complex in the Republic of Korea is studied. Results for an EV penetration ratio of up to 30% indicated that DT aging could be accelerated by up to 40%, compared to the case without EV charging. To mitigate this accelerated DT aging caused by EV charging, the effectiveness of two integration approaches of Photovoltaic (PV) sources was studied. Based on a case study that included a realistic PV generation profile, it was demonstrated that a significant contribution to DT reliability could be achieved via the operation of PV sources. A more apparent contribution of PV integration was observed with an energy storage installation at higher EV penetration ratios. At an EV penetration ratio of 30%, a maximum decrease of 41.8% in the loss-of-life probability of the DT was achieved. The effects of different PV integration approaches and power management details on DT aging were also studied. The results demonstrate that the EV charging demand could introduce a significant level of stress to DTs and that this impact can be effectively mitigated by installing PV sources. These observations are expected to contribute toward the effective planning of power system infrastructures that support the design of sustainable cities with the widespread use of EVs.

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“…John et al in [28] and Burk et al [29] proposed a method to convert the conventional design of SDS into a design based on archetypes but without introducing a mathematical model to combine these archetypes. In [30], Aravinthan and Argade investigated the impact of EV charging on the size of a DT but without considering the effect of EV charging on the sizing of the secondary lines, including both SLs and SDs. Abdelsamad et al [17] studied the optimal design of the SDS considering the effect of EV charging demand.…”

Section: Introductionmentioning

confidence: 99%