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Method for controlling and managing load demand

  • US 5,426,620 A
  • Filed: 09/23/1991
  • Issued: 06/20/1995
  • Est. Priority Date: 03/23/1987
  • Status: Expired due to Term
First Claim
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1. A method for automatically controlling and managing load demand and operation of energy-consuming equipment having individual load requirements using power transmitted through electric power lines from a utility company during all periods when operative power flows including peak demand periods, the improvement comprising the steps of:

  • predetermining the load requirements for each load and arriving at a predetermined, controlled off-on cycle of operation for the load thus to impose an optimum efficiency operation cycle most suitable for the equipment to perform its function, the load being initiated and operating only in universal synchronization with control power supplied thereto, the off cycle being based on a first preset number of totalized electrical pulses only and being divorced from any real time parameters, the on cycle being based on a second preset number of totalized electrical pulses only and being divorced from any real time parameters;

    connecting a separate demand control process apparatus wholly within a control power line at the point of control of each load in parallel relationship to an operative power line supplying operative power to each load, each demand control process apparatus including a control switch operable between open and closed positions to regulate the transmission of control power through the control power line to the load and including a digital recycle counter connected to the control switch to regulate the control switch and operable to retain the control switch open to de-energize the control power to the load for the first preset number of totalized pulses of control power, the first preset number of totalized pulses of the control power being the sole basis of actuation of the recycle counter for the off cycle of operation of the load;

    closing the control switch upon the cessation of the first preset number of totalized pulses enabling the control power to energize the load for the second preset number of totalized pulses, the second preset number of totalized pulses of the control power being the sole basis of actuation of the recycle counter for the on cycle of operation of the load, thus to complete a controlled off-on cycle of operation of the load as long as control power flows; and

    repeating said controlled cycle of operation of the load so long as power flows through the control line;

    whereby reduced electrical capacity may be generated because load demand and operation are controlled and managed, resulting in lower utility service charges, higher equipment efficiency and longer equipment life.

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