Network as Automation Platform for Collaborative E-Car Charging at the Residential Premises

A method for charging a plurality of electric vehicle batteries connected to a step-down transformer powering a plurality of residences, the method comprising:

• identifying a plurality of residential power demands, wherein:
• at least one of the residential power demands is a charging of an electric vehicle battery, and
• a summation of the residential power demands is greater than an upper power limit of the transformer;
• identifying a time-critical subset of the residential power demands and a time-flexible subset of the residential power demands, wherein the time-flexible subset includes the charging of the electric vehicle batteries;
• allocating, at a beginning of a time slot, power from the transformer among all time-critical residential power demands and a portion of the time-flexible residential power demands so as not to exceed the upper power limit of the transformer for a duration of the time slot;
• charging the electric vehicle batteries according to the allocating for the duration of the time slot;
• and
• repeating the above for subsequent time slots until the upper power limit of the transformer is sufficient for simultaneous operation of all residential power demands.

A method for charging a plurality of electric vehicle batteries each connected to a corresponding one of a plurality of charging stations at a residence, the method comprising:

• identifying a plurality of residential power demands, wherein:
• at least one of the residential power demands is a charging of an electric vehicle battery, and
• a summation of the residential power demands is greater than an upper power limit of the residence;
• identifying a time-critical subset of the residential power demands and a time-flexible subset of the residential power demands, wherein the time-flexible subset includes the charging of the electric vehicle batteries;
• allocating, at a beginning of a time slot, power to the residence among all time-critical residential power demands and a portion of the time-flexible residential power demands so as not to exceed the upper power limit of the residence for a duration of a time slot;
• charging the electric vehicle batteries according to the allocating for the duration of the time slot;
• and
• repeating the above for subsequent time slots until the upper power limit of the transformer is sufficient for simultaneous operation of all residential power demands.

A system for charging a plurality of electric vehicle batteries each electrically connected to a corresponding one of a plurality of charging stations at a residence, the system comprising a local demand management client located at the residence, wherein:

• the local demand management client is separate from the charging stations;
• the local demand management client is capable of monitoring and controlling residential power demands;
• and
• the local demand management client is in communication with a plurality of appliances at the corresponding residence and in communication with the plurality of charging stations.