GB523689A - Improvements in and relating to systems for limiting electric loads - Google Patents

Improvements in and relating to systems for limiting electric loads

Info

Publication number
GB523689A
GB523689A GB1070/39A GB107039A GB523689A GB 523689 A GB523689 A GB 523689A GB 1070/39 A GB1070/39 A GB 1070/39A GB 107039 A GB107039 A GB 107039A GB 523689 A GB523689 A GB 523689A
Authority
GB
United Kingdom
Prior art keywords
load
current
heater
thermostat
thermal
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.)
Expired
Application number
GB1070/39A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1070/39A priority Critical patent/GB523689A/en
Publication of GB523689A publication Critical patent/GB523689A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
    • H02J2310/52—The controlling of the operation of the load not being the total disconnection of the load, i.e. entering a degraded mode or in current limitation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

523,689. Thermal switches ; switching systems. SCHILLER, P. Jan. 12, 1939, No. 1070. [Class 38 (v)] [Also in Group XXXV] To limit the load of consumers of electricity the whole or portion of the load is periodically disconnected by a thermal switch when a predetermined load is exceeded, and in order to maintain the resultant mean load as little below the above predetermined level as possible, the relation between the load current and its effect on the thermal element is made to be a function of a lower power than the square of the load current. For example, the effect may vary directly with the load current. In the form shown, when the total load from a supply 16 to consuming devices 17, 18 exceeds the limit a heater 19 included in the circuit operates a thermostat 58 which thereupon cuts out the device 18. The heating effect of the heater 19 on the thermostat would normally be proportional to the square of the current but this relationship is altered according to the invention by causing variations in the current to control valves 62, 63 through an electromagnet 48. These valves admit cold air in and let hot air out and the heat reaching the thermostat is accordingly varied. The required relationship may also be obtained by shunting the heater of the thermal interrupter with an iron core operating along or along and above the bend in the saturation curve. Or a current transformer may be used having such an iron core. Alternatively the heater may be shunted with a resistance that decreases with increasing current.
GB1070/39A 1939-01-12 1939-01-12 Improvements in and relating to systems for limiting electric loads Expired GB523689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1070/39A GB523689A (en) 1939-01-12 1939-01-12 Improvements in and relating to systems for limiting electric loads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1070/39A GB523689A (en) 1939-01-12 1939-01-12 Improvements in and relating to systems for limiting electric loads

Publications (1)

Publication Number Publication Date
GB523689A true GB523689A (en) 1940-07-19

Family

ID=9715652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1070/39A Expired GB523689A (en) 1939-01-12 1939-01-12 Improvements in and relating to systems for limiting electric loads

Country Status (1)

Country Link
GB (1) GB523689A (en)

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