Patent ID: 8692409
Filing Date: 2014-04-08
Classification: H02J,Y02B,Y04S

Abstract:
1. A method for managing distribution of electrical power, comprising: providing a power management circuit; providing a power control unit, connected to said power management circuit by a first keyline, and having at least one outlet and a timing control circuit; providing a second power control unit, connected to said power control unit by a second keyline that is separate from said first keyline; measuring, via the power management circuit, power consumed by an electrical load; comparing, via the power management circuit, the measured power with a power limit; delivering one of a SET signal and a RESET signal to said power control unit, in accordance with the measured power not exceeding the power limit and exceeding the power limit respectively, where a condition in which the RESET signal is delivered is characterized as a reset condition, if a SET signal is being delivered to said power control unit, evaluating an outlet of the power control unit to determine whether a power request signal from the outlet is present, and if so, causing power to be delivered to the outlet in response to the request, starting a time delay using the timing control circuit, and at expiration of the time delay, determining whether the SET signal is still being delivered to said power control unit, and if it is, if a RESET signal is being delivered to said power control unit, preventing the timing control circuit from sending an enabling signal to an outlet not connected to a consumer device at initiation of the reset condition; and propagating whichever signal is delivered to said power control unit to said second power control unit using said second keyline.