GB1120460A - Short-circuit protective device for direct current power transmission lines - Google Patents

Short-circuit protective device for direct current power transmission lines

Info

Publication number
GB1120460A
GB1120460A GB54190/65A GB5419065A GB1120460A GB 1120460 A GB1120460 A GB 1120460A GB 54190/65 A GB54190/65 A GB 54190/65A GB 5419065 A GB5419065 A GB 5419065A GB 1120460 A GB1120460 A GB 1120460A
Authority
GB
United Kingdom
Prior art keywords
transistor
voltage
arrangement
line
circuit
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
GB54190/65A
Inventor
Vasily Makarovich Maranchak
Stanislav Petrovich Veisky
Vladislav Vladimirov Krivenkov
Jury Mikhailovich Remizov
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.)
Moskovsky Energetichesky Institut
Original Assignee
Moskovsky Energetichesky Institut
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
Priority to FR42701A priority Critical patent/FR1460317A/en
Application filed by Moskovsky Energetichesky Institut filed Critical Moskovsky Energetichesky Institut
Priority to GB54190/65A priority patent/GB1120460A/en
Priority to SE371/66A priority patent/SE314432B/xx
Publication of GB1120460A publication Critical patent/GB1120460A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
    • H02H3/445—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities of DC quantities
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
    • H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems

Abstract

1,120,460. Protective systems; converting, MOSKOVSKY ENERGETICHESKY INSTITUT. 21 Dec., 1965, No. 54190/65. Headings H2F and H2K. [Also in Division H3] A protective arrangement for a D.C. transmission line comprises a voltage divider 10 connected to the protected line, a differentiating unit 1 connected to the voltage divider and an actuating unit 2 connected to the unit 1 which comprises two transformers 3, 4 interconnected by a capacitor 7. When the line voltage falls due to a short circuit condition, the differential unit produces a single voltage pulse which is approximately proportional to the third derivative of the line voltage and enables the arrangement to distinguish between a short circuit on the line and a short circuit in an inverter. Diodes 5, 6 and 9 in the differentiating unit increase the sensitivity of the arrangement. The voltage pulse is applied to the base of a normally non-conducting transistor 11 in a monostable circuit. This circuit includes a normally conducting transistor 12 having its collector connected to the base of the transistor 11 through a resistor 16 and a choke 17 to prevent the input voltage being shorted out by the transistor 12. A relay 24 is connected to the collector circuit of the transistor 11 and a time delay is provided by a resistor 22 and capacitor 21. In a modified arrangement, Fig. 2 (not shown), the second transformer has a rectangular hysteresis loop core and a magnetizing winding.
GB54190/65A 1965-12-17 1965-12-21 Short-circuit protective device for direct current power transmission lines Expired GB1120460A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR42701A FR1460317A (en) 1965-12-17 1965-12-17 Short-circuit protection device for direct current power transmission lines
GB54190/65A GB1120460A (en) 1965-12-17 1965-12-21 Short-circuit protective device for direct current power transmission lines
SE371/66A SE314432B (en) 1965-12-17 1966-01-12

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR42701A FR1460317A (en) 1965-12-17 1965-12-17 Short-circuit protection device for direct current power transmission lines
GB54190/65A GB1120460A (en) 1965-12-17 1965-12-21 Short-circuit protective device for direct current power transmission lines
SE371/66A SE314432B (en) 1965-12-17 1966-01-12

Publications (1)

Publication Number Publication Date
GB1120460A true GB1120460A (en) 1968-07-17

Family

ID=53765653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54190/65A Expired GB1120460A (en) 1965-12-17 1965-12-21 Short-circuit protective device for direct current power transmission lines

Country Status (3)

Country Link
FR (1) FR1460317A (en)
GB (1) GB1120460A (en)
SE (1) SE314432B (en)

Also Published As

Publication number Publication date
FR1460317A (en) 1966-11-25
SE314432B (en) 1969-09-08

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