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GB2019138A - Method and apparatus for controlling the supply of power to loads from a limited electricity supply - Google Patents

Method and apparatus for controlling the supply of power to loads from a limited electricity supply

Info

Publication number
GB2019138A
GB2019138A GB7909308A GB7909308A GB2019138A GB 2019138 A GB2019138 A GB 2019138A GB 7909308 A GB7909308 A GB 7909308A GB 7909308 A GB7909308 A GB 7909308A GB 2019138 A GB2019138 A GB 2019138A
Authority
GB
United Kingdom
Prior art keywords
loads
supply
predetermined
disconnected
priority scheme
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7909308A
Other versions
GB2019138B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electricity Supply Board
Original Assignee
Electricity Supply Board
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electricity Supply Board filed Critical Electricity Supply Board
Publication of GB2019138A publication Critical patent/GB2019138A/en
Application granted granted Critical
Publication of GB2019138B publication Critical patent/GB2019138B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/007—Adapted for special tariff measuring
    • G01R21/008—Measuring maximum demand

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The current or power output from a limited electricity supply is continuously measured by a circuit 5 and compared with predetermined transient and steady threshold levels. If the measured level exceeds the transient threshold level, all interruptable loads 9 are disconnected by a microcomputer 7 which switches off the respective triac 10 in series with the load, and are subsequently reconnected one at a time when the transient condition has passed. If the measured level exceeds the steady threshold level, the interruptable loads 9 are disconnected one at a time according to a predetermined priority scheme, and the disconnected loads are subsequently reconnected according to the same or an altered load priority scheme. Under the load priority scheme, certain loads have a greater prospect of connection to the supply during a predetermined time period, but all loads are assured a predetermined minimum connection time. <IMAGE>
GB7909308A 1978-03-19 1979-03-16 Method and apparatus for controlling the supply of power to loads from a limited electricity supply Expired GB2019138B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE191377A IE771913L (en) 1978-03-19 1978-03-19 Controlling power supply to loads from a limited electricity¹supply

Publications (2)

Publication Number Publication Date
GB2019138A true GB2019138A (en) 1979-10-24
GB2019138B GB2019138B (en) 1982-10-20

Family

ID=11031644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909308A Expired GB2019138B (en) 1978-03-19 1979-03-16 Method and apparatus for controlling the supply of power to loads from a limited electricity supply

Country Status (2)

Country Link
GB (1) GB2019138B (en)
IE (1) IE771913L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178067A1 (en) * 1984-09-11 1986-04-16 Westinghouse Electric Corporation Watthour meter with demand responsive load control capability
GB2188799A (en) * 1986-04-04 1987-10-07 Philip Hall Bertenshaw Control system for electric power distribution
GB2180706B (en) * 1985-09-10 1989-08-16 Sanden Corp Heater current control method for automatic vending machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178067A1 (en) * 1984-09-11 1986-04-16 Westinghouse Electric Corporation Watthour meter with demand responsive load control capability
GB2180706B (en) * 1985-09-10 1989-08-16 Sanden Corp Heater current control method for automatic vending machine
US4915162A (en) * 1985-09-10 1990-04-10 Sanden Corporation Method and apparatus for heater current control for automatic vending machine
GB2188799A (en) * 1986-04-04 1987-10-07 Philip Hall Bertenshaw Control system for electric power distribution

Also Published As

Publication number Publication date
GB2019138B (en) 1982-10-20
IE771913L (en) 1979-09-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee