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Enhancement of Electric Energy Distribution System Performance in the Presence of Electric Vehicles as Mobile Energy Storage Devices

Haji Abolhassani, Milad | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53510 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Safdarian, Amir
  7. Abstract:

  8. The worldwide increase in greenhouse gases is one of the most important human concerns today, and reducing emissions is on the agenda of politicians and the international community. Globally, the transportation fleet is one of the major sources of environmental pollutants due to the use of fossil fuels, and replacing this fleet with electric vehicles will play an important role in reducing the emission of environmental pollutants. These environmental concerns and the advancement of technologies used in electric vehicles in recent years have led to a relative increase in the presence of electric vehicles in the transportation network. The acceptance of these cars, on the one hand, imposes a burden on the electric energy distribution systems and weakens its performance. On the other hand, planning to charge electric vehicles and using them as portable energy storage devices reduce the negative effects and even improve the performance of the electric energy distribution system. If proper charging and discharging of electric vehicles are planned, the required electrical energy in the congested parts of the electric energy distribution system at peak hours could be transferred using electric vehicles. In other words, these cars transfer electrical energy from one point of the grid to another and from one time to another time. In this study, the purpose is to use this capability of electric vehicles to improve the performance of the electric energy distribution system. Among various performance indicators, losses and load interruption costs will be considered. In the first step, using the analysis on the transportation network data, the approximate location and time of the presence of electric vehicles are predicted. Then, using the spatial and temporal data of electric vehicles, the battery charge status of electric vehicles is calculated, and finally, based on the electric energy distribution system data and battery charge status of electric vehicles, a mathematical model for optimal charging and discharging of these vehicles is presented. The Sioux Falls transportation network and the IEEE 33 bus distribution system are used as test systems to evaluate the performance of the proposed model.
  9. Keywords:
  10. Electric Motor Vehicles ; Electric Vehicle Charger ; Electricity Distribution Network ; Discharge Electric Vehicle ; Mobile Energy Storage Device ; Environmental Pollutant

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