Add EV Batteries
Electrical Vehicle (EV) Batteries daily charging/discharging can be added in your scenario as fixed storage units. To add EV batteries add a custom Storage Technology Candidate by clicking in Create Custom button. Under the section E-mobility Parameters there are 3 possible Charging Strategies:
Monodirectional (Dump): Here the charging of the batteries starts as soon as the vehicle is plugged-in. The charging power is constant and equal to EV-Plug-in Power (kW)
Example of Monodirectional charging power (kW) of an EV Battery during a work week. The charging of the EV battery isn’t controlled and it starts charging as soon as it’s plugged-in
Smart Monodirectional (Smart): Here the charging of the batteries starts at the (optimal) best hour and best charging power to optimize the objectives of the system. The maximum power is EV-Plug-in Power (kW)
Example of Monodirectional Smart charging power (kW) of an EV Battery during a work week. The charging of the EV battery fluctuates and starts later when the price of the grid electricity is lower (0.15 CHF/kWh).
Smart Bidirectional (V2G): The same as the previous strategy but with bidirectional charging (charging & discharging) so Vehicle to Grid (V2G) is allowed.
Example of Bidirectional Smart (V2G) dis/charging power (kW) of an EV Battery during a work week. The charging happens when the price of the grid electricity is lower (0.15 CHF/kWh). There are also periods of discharging (V2G) when the price of grid electricity is higher (0.4 CHF/kWh)
The rest of the parameters needed for the definition of the EV batteries are explained in the table below:
PARAMETER | UNITS | REQUIRED? | DEFAULT | EXPLANATION |
E-MOBILITY PARAMETERS |
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EV Plug-in Time | hour | Yes |
| The hour of the day when the EV batteries can be plugged-in to the electrical circuit of the system. It can’t be “00:00” |
EV Plug-out Time | hour | Yes |
| The hour of the day when the EV batteries can be plugged-out to the electrical circuit of the system. It can’t be “00:00” |
EV Plug-in Duration | hours | Yes | The total hours that the EV battery will be connected. It must be less than 24 hours | |
EV Battery Size (kWh) | kWh | Yes |
| The total size of the EV batteries in kWh considered in the system |
EV Plug-in Power (kW) | kW | Yes |
| The maximum possible power in kW to charge the EV batteries. |
EV SoC start (%) | % of total capacity | Yes |
| The initial State of Charge (SoC) of the EV batteries when they are plugged-in. |
Maximum SoC (%) | % of total capacity | Yes |
| The maximum State of Charge (SoC) allowed for the EV batteries |
Driving Distance (kms) | km | Yes |
| The driving distance (kms) of the EV which must be able to cover after charging the EV battery |
EV Average kWh per km | kWh/km | Yes |
| The average consumption of the EV in kWh per km driven |
While running the scenario some warning messages might be sent to alert about the following:
That the charging specified won’t be enough to reach the target Driving Distance for the car.
That the EV battery has enough starting SoC to cover the target Driving Distance of the car, so the charging won’t be necessary. (Only for the cases of Monodirectional charging strategy)