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Optimizing shared charging services at sustainable bus charging hubs: A queue theory integration approach

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Title: Optimizing shared charging services at sustainable bus charging hubs: A queue theory integration approach
Authors: Liu, Zhengke, Ma, Xiaolei, Zhuo, Siyu, Liu, Xiaohan, 1994
Source: Renewable Energy. 237
Subject Terms: Shared charging mode, Solar photovoltaic energy, Queue theory, Electric bus charging scheduling, Renewable energy on-site consumption, Optimization-based model
Description: Integrating solar photovoltaic (PV) systems into bus charging infrastructure offers a promising solution to mitigate carbon emissions and reduce grid loads. However, a mismatch between the output of solar PV energy and the electric bus (EB) charging demand can arise due to the instability and intermittency of solar PV energy. To address this issue, this study introduces a novel shared charging business mode that allocates charging facilities to private electric vehicles (PEVs), leveraging idle infrastructure to maximize solar PV utilization. We develop an optimization framework to jointly determine the EB charging schedules and the allocation of charging facilities between EBs and PEVs within an EB network integrated with solar PV systems. Additionally, a loss queue model with time-dependent arrival rates is proposed to model the stochastic nature of PEV charging demand. A case study is conducted on a bus network in Beijing to validate our proposed operational strategy. The findings demonstrate that integrating shared charging in bus depots equipped with solar PV systems improves solar PV utilization from 79.30 % to 92.91 %. This integration reduces CO2 emissions and overall daily system costs by 7.93 % and 14.82 %, respectively, without negatively impacting the grid load during peak periods.
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  Data: Optimizing shared charging services at sustainable bus charging hubs: A queue theory integration approach
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Zhengke%22">Liu, Zhengke</searchLink><br /><searchLink fieldCode="AR" term="%22Ma%2C+Xiaolei%22">Ma, Xiaolei</searchLink><br /><searchLink fieldCode="AR" term="%22Zhuo%2C+Siyu%22">Zhuo, Siyu</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Xiaohan%22">Liu, Xiaohan</searchLink>, 1994
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  Data: <i>Renewable Energy</i>. 237
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  Data: <searchLink fieldCode="DE" term="%22Shared+charging+mode%22">Shared charging mode</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+photovoltaic+energy%22">Solar photovoltaic energy</searchLink><br /><searchLink fieldCode="DE" term="%22Queue+theory%22">Queue theory</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+bus+charging+scheduling%22">Electric bus charging scheduling</searchLink><br /><searchLink fieldCode="DE" term="%22Renewable+energy+on-site+consumption%22">Renewable energy on-site consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Optimization-based+model%22">Optimization-based model</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: Integrating solar photovoltaic (PV) systems into bus charging infrastructure offers a promising solution to mitigate carbon emissions and reduce grid loads. However, a mismatch between the output of solar PV energy and the electric bus (EB) charging demand can arise due to the instability and intermittency of solar PV energy. To address this issue, this study introduces a novel shared charging business mode that allocates charging facilities to private electric vehicles (PEVs), leveraging idle infrastructure to maximize solar PV utilization. We develop an optimization framework to jointly determine the EB charging schedules and the allocation of charging facilities between EBs and PEVs within an EB network integrated with solar PV systems. Additionally, a loss queue model with time-dependent arrival rates is proposed to model the stochastic nature of PEV charging demand. A case study is conducted on a bus network in Beijing to validate our proposed operational strategy. The findings demonstrate that integrating shared charging in bus depots equipped with solar PV systems improves solar PV utilization from 79.30 % to 92.91 %. This integration reduces CO2 emissions and overall daily system costs by 7.93 % and 14.82 %, respectively, without negatively impacting the grid load during peak periods.
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