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A demand limit control system for maintaining power consumption of loads within a building below an upper demand limit, the upper demand limit being separated from a lower demand limit by a deadband, the system having a power demand controller responsive to power consumption for providing a controll

A demand limit control system for maintaining power consumption of loads within a building below an upper demand limit, the upper demand limit being separated from a lower demand limit by a deadband, the system having a power demand controller responsive to power consumption for providing a controller output signal ramping up when the power consumption is above the upper demand limit, remaining substantially constant when power consumption is between the upper and lower demand limits, and ramping down when the power consumption is below the lower demand limit, and a plurality of demand controlled loads each connected to the power demand controller and each responding to a different threshold value of the controller output signal such that each load is conditioned to turn off when the controller output signal is above the threshold and is conditioned to turn on when the controller output signal is below the threshold.

대표청구항 ▼

A demand control system for maintaining power consumption of loads within a building below a demand limit comprising: power demand controller means responsive to power consumption of said loads for providing a controller output signal changing in a first direction when said power consumption is abov

A demand control system for maintaining power consumption of loads within a building below a demand limit comprising: power demand controller means responsive to power consumption of said loads for providing a controller output signal changing in a first direction when said power consumption is above said demand limit and changing in a second direction when said power consumption is below said demand limit; a communication channel connected to said power demand controller means for carrying said signal; and, at least one demand load controlling means connected to said communication channel to be responsive to a threshold of said controller output signal, said demand load controlling means having a deenergization state and an energization state, said demand load controlling means capable of having one of said states when said controller output signal is above said threshold and the other of said states when said controller output signal is below said threshold.