Journal
IET GENERATION TRANSMISSION & DISTRIBUTION
Volume 12, Issue 9, Pages 2019-2028Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-gtd.2017.0636
Keywords
battery powered vehicles; public transport; pricing; electric vehicle charging; energy storage; coordinated charging; discharging strategies; plug-in electric bus fast charging station; energy storage system; public transportation; PEB fast charging stations; PEBFCS; maximum economic benefits; electricity price arbitrage; heuristics-based method; ESS capacity
Categories
Funding
- National Natural Science Foundation of China [51477082]
- National Key Research and Development Program [2016YFB0900100]
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Plug-in electric bus (PEB) is an environmentally friendly mode of public transportation and PEB fast charging stations (PEBFCSs) play an essential role in the operation of PEBs. Under effective control, deploying an energy storage system (ESS) within a PEBFCS can reduce the peak charging loads and the electricity purchase costs. To deal with the (integrated) scheduling problem of (PEBs charging and) ESS charging and discharging, in this study, the authors propose an optimal real-time coordinated charging and discharging strategy for a PEBFCS with ESS to achieve maximum economic benefits. According to whether the PEB charging loads are controllable, the corresponding mathematical models are, respectively, established under two scenarios, i.e. coordinated PEB charging scenario and uncoordinated PEB charging scenario. The price and lifespan of ESS, the capacity charge of PEBFCS and the electricity price arbitrage are considered in the models. Further, under the coordinated PEB charging scenario, a heuristics-based method is developed to get the approximately optimal strategy with computation efficiency dramatically enhanced. Finally, the authors validate the effectiveness of the proposed strategies, interpret the effect of ESS prices on the usage of ESS and provide the sensitivity analysis of ESS capacity through the case studies.
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