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Article: How many Teslas does it take to black out an apartment block?

Discussion in 'Australia & New Zealand' started by baillies, May 24, 2017.

  1. baillies

    baillies Member

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  2. raynewman

    raynewman Member

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  3. baillies

    baillies Member

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    #3 baillies, May 24, 2017
    Last edited: May 24, 2017
    Good to here ray. Not sure exactly how the load sharing works for the newer wall connector but maybe this will help. One issue maybe the 15m max distance between chargers.

    Installation Manuals - Wall Connector

    Edit: typical found this with one more search after posting this, seems the load is shared so that the vehicles finish charging at the same time so probably ok for apartment blocks.

    New Power Wall Connectors - "sharing" observation
     
  4. 22522

    22522 Member

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    In the US, air conditioning load defines the service capacity to most buildings, and the energy needed for most round trip commutes can be delivered over the evening without exceeding this threshold. Apartment dwellers usually have shorter commutes, so the concept does not totally fall apart for apartments.

    The way to solve this is to put a current probe on the main feed. For the building, and limit the vehicle charge rate when other loads are present.
     
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  5. markwj

    markwj Moderator, Asia Pacific

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    We really need a standard communications protocol for load limiting EVSEs. One that is implemented in every EVSE.

    We've already got that protocol between the EVSE and the car. The EVSe can effectively dynamically limit how much current the charger in the car can draw from the wall. We just need something similar for all the EVSEs to communicate to that current probe on the main feed. Something that runs over the power line itself would be simple to deploy.
     
  6. roblab

    roblab Active Member

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    In CA, the power company is responsible for power to the meter, and the homeowner the rest of the way. When I bought my first Model S, the power company came out, without my request, and put in a larger transformer and new service. My electrician put in a bigger circuit panel. (It's an old house, and it needed it.) But I can't imagine blacking out a building. I only pull about 30 amps at night, after midnight.
     
  7. Blue heaven

    Blue heaven Member

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    It only takes one ICE car to black out multiple suburbs for the whole morning. image.jpeg
     
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