GB1076773A - Improvements relating to fault protection for electric power distribution systems - Google Patents
Improvements relating to fault protection for electric power distribution systemsInfo
- Publication number
- GB1076773A GB1076773A GB1680963A GB1680963A GB1076773A GB 1076773 A GB1076773 A GB 1076773A GB 1680963 A GB1680963 A GB 1680963A GB 1680963 A GB1680963 A GB 1680963A GB 1076773 A GB1076773 A GB 1076773A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sectionalizer
- circuit
- breaker
- open
- fault current
- 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
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
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/063—Details concerning the co-operation of many similar arrangements, e.g. in a network
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H75/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism
- H01H75/02—Details
- H01H75/04—Reset mechanisms for automatically reclosing a limited number of times
Landscapes
- Breakers (AREA)
Abstract
1,076,773. Protective arrangements; automatic circuit-breakers. A. REYROLLE & CO. Ltd. July 28, 1964 [April 29, 1963], No. 16809/63. Headings H2B and H2K. A power distribution system has an auto-reclosing circuit-breaker R4A controlling the supply to a cable or line 10 having a plurality of sectionalizers 1S3, 2S2, 3S1 spaced apart in series along the cable or line, each sectionalizer having a counting mechanism arranged to open the sectionalizer during a " dead-time " of the circuit breaker after a predetermined number of fault current passages less than the number of operations of the circuit-breaker required to cause it to lock open. The mechanism of each succeeding sectionalizer beyond the first is set to open the sectionalizer after fewer passages of fault current than the one before it, and the circuit-breaker is provided with an indicator to indicate the number of times the circuit-breaker has opened so as to show which sectionalizer has opened. Fig. 1 shows a system fed from both ends through circuit-breakers R4A, R4B arranged to look out after four successive opening and closing cycles within a short period. The sectionalizers 1S3, 4S3 open after three passages of fault current, the sectionalizers 2S2, 5S2 open after two passages of fault current and the sectionalizers 3S1, 6S1 after a single passage of fault current. With this arrangement the sectionalizer 3S1 would normally be open, but in a further arrangement in which the loop is normally closed, each sectionalizer is provided with two counting mechanisms respectively responsive to supplies from opposite ends of the cable or line. Each sectionalizer has a solenoid 20 energized in the event of overload or unbalance currents to operate a pawl 26 so as to raise a rack 37 one step, Fig. 3A. The return of the rack is delayed by a dash pot 40, the positioning of which determines the number of steps the rack has to be raised before a flange 60 lifts a stirrup 56 so that it engages behind a claw 61 on the solenoid plunger 25. Then as the circuit-breaker opens causing the solenoid to be de-energized, a spring (not shown) returns the plunger 25 and through the stirrup 56 turns a latch 54 to release the tripping lever 50 of the sectionalizer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1680963A GB1076773A (en) | 1963-04-29 | 1963-04-29 | Improvements relating to fault protection for electric power distribution systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1680963A GB1076773A (en) | 1963-04-29 | 1963-04-29 | Improvements relating to fault protection for electric power distribution systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1076773A true GB1076773A (en) | 1967-07-19 |
Family
ID=10084057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1680963A Expired GB1076773A (en) | 1963-04-29 | 1963-04-29 | Improvements relating to fault protection for electric power distribution systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1076773A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120876A (en) * | 1982-05-28 | 1983-12-07 | Electricty Council The | Sectionaliser |
GB2198001A (en) * | 1986-11-12 | 1988-06-02 | Mitsubishi Electric Corp | Fault section locating apparatus |
US5854582A (en) * | 1997-08-27 | 1998-12-29 | Hubbell Incorporated | Pivotal latching mechanism with interengageable latch arm and catch in a sectionalizer assembly |
CN109494697A (en) * | 2019-01-08 | 2019-03-19 | 华北电力大学 | A method of the new energy station multiterminal pilot protection based on cosine similarity |
-
1963
- 1963-04-29 GB GB1680963A patent/GB1076773A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2120876A (en) * | 1982-05-28 | 1983-12-07 | Electricty Council The | Sectionaliser |
US4553188A (en) * | 1982-05-28 | 1985-11-12 | The Electricity Council | Sectionalizer |
GB2198001A (en) * | 1986-11-12 | 1988-06-02 | Mitsubishi Electric Corp | Fault section locating apparatus |
GB2198001B (en) * | 1986-11-12 | 1990-08-29 | Mitsubishi Electric Corp | Fault section finding apparatus |
US5854582A (en) * | 1997-08-27 | 1998-12-29 | Hubbell Incorporated | Pivotal latching mechanism with interengageable latch arm and catch in a sectionalizer assembly |
CN109494697A (en) * | 2019-01-08 | 2019-03-19 | 华北电力大学 | A method of the new energy station multiterminal pilot protection based on cosine similarity |
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