Patent US4419666A successfully refreshed from Google Patents.
US4419666A
Expired / Lapsed
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System for controlling power distribution to customer loads
Assignee: Atos Origin IT Services Inc
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Filing: 1982-08-06
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Granted: 1983-12-06
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Expires: 2002-08-06
Abstract
Abstract A method and apparatus which permits a power utility to have direct control of customers loads (CD) with a view toward facilitating enablement of a load management philosophy which includes peak shaving and load deferral. A master control station (MCS), which comprises a programmable microprocessor-based central controller, is in two-way communication with a plurality of substation injection units (SIU), one of each of which is positioned at a separate substation of the power utility. Each substation injection unit (SIU), under the control of its own microprocessor, responds to master control signals from the master control station (MCS) to inject a pulse code signal onto the power lines of the utility. The system includes a plurality of remote receiver units (RRU) which are positioned at and connected to control the on and off times of customer loads (CD). Each remote receiver unit (RRU) is preset to respond to particular pulse code signals from the substation injection units (SIU) to carry out the desired command functions, which can be implemented either automatically or manually on a fixed or dynamic-cycle basis as the need arises. The system utilizes a command signal and pulse code signal verification technique to insure system integrity and reliability.
Inventors
- 👤 George P. Gurr
- 👤 Bruce J. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:54
CPC Classifications
H; H02; H02J; H02J13/00; H02J13/18; H02J13/333; H02J13/13; H02J13/1311; H02J3/00; H02J3/17; H02J2105/00; H02J2105/50; H02J2105/52; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y02B70/3225; Y02B90/00; Y02B90/20; Y04; Y04S; Y04S20/00; Y04S20/20; Y04S20/222; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
249 words
A system for permitting an electric power utility to control the distribution of its three-phase, AC high voltage power along its power lines from a plurality of substations to a plurality of customer loads arranged in groups, which comprises: a master control station including first programmable digital data processor means and input/output devices under the control of an operator for generating data signals in response to group control command signals; a plurality of substation injection units in two-way communication with said master control station, each of said units located at a different one of said substations and having its own programmable digital data processor means, each of said substation injection units responsive to said data signals for generating pulse code signals for injection onto said power lines; and a plurality of remote receiver units each located at and connected to control one of said customer loads and responsive to a particular one of said pulse code signals for connecting or disconnecting its load from said power lines; and wherein said master control station includes: means for polling each of said substation injection units to obtain information pertaining to its status, possible alarm conditions, and analog or discrete data generated at the respective substation; means for transmitting and receiving serial binary block messages to and from each of said substation injection units, said block messages including substation injection unit address data, substation injection unit function commands and said data signals; and means for prioritizing and executing said group control commands.
Claim 2
Independent Claim
249 words
A system for permitting an electric power utility to control the distribution of its three-phase, AC high voltage power along its power lines from a plurality of substations to a plurality of customer loads arranged in groups, which comprises: a master control station including first programmable digital data processor means and input/output devices under the control of an operator for generating data signals in response to group control command signals; a plurality of substation injection units in two-way communication with said master control station, each of said units located at a different one of said substations and having its own programmable digital data processor means, each of said substation injection units responsive to said data signals for generating pulse code signals for injection onto said power lines; and a plurality of remote receiver units each located at and connected to control one of said customer loads and responsive to a particular one of said pulse code signals for connecting or disconnecting its load from said power lines; and wherein said master control station includes: means for polling each of said substation injection units to obtain information pertaining to its status, possible alarm conditions, and analog or discrete data generated at the respective substation; means for transmitting and receiving serial binary block messages to and from each of said substation injection units, said block messages including substation injection unit address data, substation injection unit function commands and said data signals; and means for prioritizing and executing said group control commands.
Claim 3
Dependent Claim
38 words
Apparatus as set forth in claim 1, wherein said data signals are adapted to be transmitted over telephone lines, and wherein said master control station further comprises means for converting said data signals for transmission over telephone lines.
Claim 4
Dependent Claim
33 words
Apparatus as set forth in claim 2, further comprising interface means for connecting said master control station and said input/output devices, said master control station further including means for initializing said interface means.
Claim 5
Dependent Claim
33 words
Apparatus as set forth in claim 2, wherein said remote receiver units further comprise contact means, and wherein said master control station further comprises means for switching said contact means on and off.
Claim 6
Dependent Claim
207 words
In a load management system wherein a master control station is in two-way communication with a plurality of substation injection units located respectively at a plurality of substations, and a plurality of remote receiver units are in one-way communication, respectively, with a plurality of customer loads arranged in groups, a method of permitting an electric power utility to control the distribution of its three-phase, AC high voltage power along its power lines from said plurality of substations to said plurality of customer loads, which comprises the steps of: generating load group command signals; generating data signals in response to said load group command signals; generating pulse code signals for injection onto said power lines in response to said data signals; alternately switching said loads on and off in response to said pulse code signals from said power lines; polling each of said substation injection units to obtain information pertaining to its status, possible alarm conditions, and analog or discrete data generated at the respective substations; transmitting and receiving serial binary block messages to and from each of said substation injection units, said block messages including substation injection unit address data, substation injection unit function commands and said data signals; and prioritizing and executing said group control commands.
Claim 7
Dependent Claim
207 words
In a load management system wherein a master control station is in two-way communication with a plurality of substation injection units located respectively at a plurality of substations, and a plurality of remote receiver units are in one-way communication, respectively, with a plurality of customer loads arranged in groups, a method of permitting an electric power utility to control the distribution of its three-phase, AC high voltage power along its power lines from said plurality of substations to said plurality of customer loads, which comprises the steps of: generating load group command signals; generating data signals in response to said load group command signals; generating pulse code signals for injection onto said power lines in response to said data signals; alternately switching said loads on and off in response to said pulse code signals from said power lines; polling each of said substation injection units to obtain information pertaining to its status, possible alarm conditions, and analog or discrete data generated at the respective substations; transmitting and receiving serial binary block messages to and from each of said substation injection units, said block messages including substation injection unit address data, substation injection unit function commands and said data signals; and prioritizing and executing said group control commands.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |