[aprssig] Tesla Field Day mode (or any EV/Hybrid)

[Andre]

We have a much better situation around here,
Public charging points (3x32 amp 240 v) are free to get installed for 
any company or city if they can show proof of demand, the charge net 
provider forks the bill because they will be the ones to get the profit.
charging cost is about 20 eurocent per kwh with the average EV using 
about 10 kwh per 100 km it would be less then 2 euro per day without 
charging at home.
Now comes the best part, with both smart charging and V2G enabled and 
the charge network participating in grid balancing auctions, the EV 
owner gets a cut back from the charging company and the employer does 
not have to do anything for it except request the number of charging 
points that are needed free of cost.

The employer would not gain anything here from doing it themselfs as we 
do not have peak demand charges, they just pay for the max they can 
draw, be it 3x80 amp 240v for a small dedicated line or a 3x32amp 10 kv 
line and the amount actually used, the max capacity also counts for 
delivering back, afterall the components do not care what way the 
current flows.

73 de Andre PE1RDW

On 2/25/19 6:10 PM, Robert Bruninga wrote:
> V2G charging and grid management:
>
> I think this Vehicle-to-Grid (V2G) concept will never take off, simply
> because it cannot work unless the cars are plugged-in all day.  This WILL
> work if workplaces do employee charging the right way, that is, with rows
> and rows of parking spaces with simple 120v outlets.  During an 8 hour
> work day, the average EV can gain up to 30 miles of daily range to
> replenish their incoming commute while costing about 50 cents a day.
>
> But since so few "employers" have any EV experience, they opt for very
> expensive $5000 Level 2 chargers instead of a $15 outlet from Home Depot.
> As a result, these big expensive chargers have to be shared throughout the
> day, require expensive internet and credit card connectivity and
> management and each person that plugs in only for an hour or so has to
> move their car every hour or so and does not want any of his electricity
> to go back to the grid, he wants the charge!
>
> But with every car plugged into a 120v outlet (the right way), the
> employer can use that fixed daily load to balance his dynamic load and
> thereby actually reduce his peak-demand charges.  And the financial
> benefit of demand-response loading can likely exceed the 50 cents a day to
> charge an EV and so most likely allow the employer to provide the charging
> for FREE.
>
> It's a win-win.  Every EV gets a pretty good commuter charge per day for
> low cost or free, the employer saves electric bill money by managing peak
> demand, and the grid wins by reducing dynamic demand..  And all of this is
> accomplished without ever having to use V2G and all its inherent social
> negativity.
>
> Its an exciting new world of energy.  If people will just wake up to the
> potential...
>
> Bob, WB4APR
>
> -----Original Message-----
> From: aprssig <aprssig-bounces at lists.tapr.org> On Behalf Of Andre
> Sent: Monday, February 25, 2019 10:47 AM
> To: aprssig at lists.tapr.org
> Subject: Re: [aprssig] Tesla Field Day mode (or any EV/Hybrid)
>
> I am currently working for a electric grid company in the Netherlands, the
> current charging protocol of electric cars support both smart charging
> (only charge when there is a surplus of energy) and back charging
> (supplying energy back to the grid when there is high demand) off course
> this requires a charger that can support this, most home chargers can not
> but the newest public chargers (non fast charge) are capable if enabled.
>
> So it is not the car that is limiting this but rather the charger you use,
> as the charging protocol is public it might be possible to make your own,
> not sure I would recommend it as we are talking several 100 volt DC.
>
> 73 Andre PE1RDW.
>