Responding to pricing signals from a power supplier using mixed add/shed and profile setback delta schemes

• US 5,598,349 A
• Filed: 10/25/1994
• Issued: 01/28/1997
• Est. Priority Date: 10/25/1994
• Status: Expired due to Term

• Current Assignee: Honeywell Incorporated (Honeywell International Inc.)
• Original Assignee: Honeywell Incorporated (Honeywell International Inc.)
• Inventors: Elliason, Kurt L., Schnell, Robert J.
• Primary Examiner(s): Trammell, James P.
• Application Number:
  US08/329,128
• Time in Patent Office: 826 Days
• Field of Search: 364/492, 364/511, 364/464.04, 364/493, 307/31, 307/32, 307/35, 307/78, 307/39, 307/62, 307/40, 307/41, 340/823.06, 340/870.02, 340/870.03, 340/870.16
• US Class Current: 700/295
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 2310/60 Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
• CPC Class Codes: H02J 2310/64 The condition being economic, e.g. tariff based load management
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

A method for employing utility-supplied information relies on two schemes for accommodating such pricing information. All subsystems in a building function based on the individual controller responsible for that subsystem and the user-defined predetermined responses stored in memory. Direct load control and user overrides are allowed. Where appropriate, a setback is applied across subsystems that operate on setpoints, and other loads are add/shed based on their value vis-a-vis interpreted utility pricing information signals.

Claims

1. Method for cooperatively controlling individual user premise subsystems each of which is controlled by controllers, said method comprising:

receiving information signals from a utility provider at the user premise,

Interpreting the information signals to provide a value to the controllers,

making the interpreted signals available to controller processors which control subsystems in the user premise,

for a processor receiving said interpreted signal which has access to and employs information in memory regarding setback profiles for its subsystem, then having such processor locate a value match in the setback profile memory locations for the value indicated by said utility information signal, and then controlling its subsystem with that matching value by using the matched values to generate a setback delta value and forwarding it as a signal to the subsystem controller, and

for a processor which accesses tier information in a memory location for its controlled subsystem (such subsystem'"'"'s energy usage state being called its controlled state), then having such processor compare the predetermined tier value of such subsystem to the information signal provided by the utility, and if the subsystem value is greater, doing nothing with regard to changing the control state of such subsystem, else changing the control state of such subsystem.

2. A Method for cooperatively controlling a community of individual user premise subsystems each of which is controlled by controllers on a substantial portion of said community of user premises, said method comprising:

sending information signals from the utility provider for the community which contains at least one of the following values;

DLC, tier, time, real-time and price,

receiving said information signals from said utility provider at the user premise,

interpreting the information signals to provide a value to the controllers,

making the interpreted signals available to controller processors which control said subsystems in said users'"'"' premises, and

if a processor receiving said interpreted signal has access to information regarding setback profiles for its subsystem, then having such processor locate a value match in the setback profile for the value indicated by said utility information signal, and then controlling its subsystem with that matching value by using it to generate a setback delta for the subsystem controller and providing it to said controller, and

if the processor is one which does not access profile information for its subsystem, then having such processor compare the predetermined tier value of its subsystem to the information signal provided by the utility, and if its value is greater, doing nothing, else turning off the subsystem for which it is responsible.

3. A Method for cooperatively controlling a community of individual user premise subsystems each of which is controlled by controllers on the user premise, said method comprising:

sending information signals from the utility provider for the community which contains at least one of the following values;

DLC, tier, time and price,

receiving said information signals from said utility provider at the user premise,

interpreting the information signals to provide a value to the controllers,

making the interpreted signals available to controller processors which control subsystems in the user premise,

if a processor receiving said interpreted signal is responsive to DLC commands, then causing said responsive processor'"'"'s subsystem to respond to said DLC command if it is contained in said interpreted information signal, else,

if a processor receiving said interpreted signal has access to information regarding setback profiles for its subsystem, then having such processor locate a value match in the setback profile for the value indicated by said utility information signal, and then controlling its subsystem with that matching value by using it to generate a setback delta for the subsystem controller and providing it to said controller, and

if the processor receiving said interpreted signal is one which does not access profile information for its subsystem, then having such processor compare the predetermined tier value of its subsystem to the information signal provided by the utility, and if its value is greater, doing nothing, else turning off the subsystem for which it is responsible.

4. The method of claim 3 wherein the user'"'"'s selection of an override request for override of incoming DLC signals allows the controller to ignore an incoming DLC signal.

5. The method of claim 4 wherein only some controllers on the user premises may allow override requests.

6. The method of claim 4 wherein the user premise interface to the utility reports to the utility any time a user has overridden a DLC.