EP1926116A1 - Disjoncteur amortisseur de puissance avec pression réduite du volume d'amortissement - Google Patents

Disjoncteur amortisseur de puissance avec pression réduite du volume d'amortissement Download PDF

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Publication number
EP1926116A1
EP1926116A1 EP06405498A EP06405498A EP1926116A1 EP 1926116 A1 EP1926116 A1 EP 1926116A1 EP 06405498 A EP06405498 A EP 06405498A EP 06405498 A EP06405498 A EP 06405498A EP 1926116 A1 EP1926116 A1 EP 1926116A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
filling valve
puffer
support
volume
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
EP06405498A
Other languages
German (de)
English (en)
Other versions
EP1926116B1 (fr
Inventor
Helmut Heiermeier
Kurt Kammerl
Timo Kehr
Johan Frisk
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP06405498A priority Critical patent/EP1926116B1/fr
Priority to AT06405498T priority patent/ATE523889T1/de
Priority to KR1020070119927A priority patent/KR101395098B1/ko
Priority to JP2007303938A priority patent/JP2008135392A/ja
Priority to CN2007101857248A priority patent/CN101256915B/zh
Publication of EP1926116A1 publication Critical patent/EP1926116A1/fr
Application granted granted Critical
Publication of EP1926116B1 publication Critical patent/EP1926116B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/901—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism making use of the energy of the arc or an auxiliary arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
    • H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
    • H01H33/83—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas wherein the contacts are opened by the flow of air or gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H2033/908—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism using valves for regulating communication between, e.g. arc space, hot volume, compression volume, surrounding volume
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
    • H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/86—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve

Definitions

  • the invention relates to puffer circuit breakers having filling valves.
  • circuit breakers having a puffer chamber When being operated, circuit breakers having a puffer chamber generate a pressure build-up in their puffer volume that depends on current, speed of operation, puffer volume and contact system dimension.
  • the built-up pressure is required for quenching the arc under high current conditions, but it works against the drive and reduces the reachable speed. Additionally, it may create supersonic flow in the insulating nozzle, which may reduce the dielectric withstand capability between contacts due to a lower gas density in certain regions.
  • the object of the present invention is to provide a circuit breaker that addresses this problem. This object is achieved by the circuit breaker of claim 1.
  • the circuit breaker of the present invention uses a modified filling valve.
  • the filling valve is available anyhow in circuit breakers of this type and conventionally serves to allow a flow of gas into the puffer volume upon expansion of the puffer volume.
  • the closing member of the filling valve is biased in a direction against a flow of gas exiting from the puffer volume in such a manner that the filling valve remains open while the pressure build-up within the puffer volume remains below a given threshold. If the pressure build-up exceeds this threshold, which is the case when interrupting higher currents, the closing member closes the filling valve in order to allow the generation of a pressure and gas flow sufficient to extinguish a high power arc.
  • the invention allows to keep the pressure in the puffer volume low when opening the circuit breaker under low load conditions, thereby reducing the tendency of supersonic flow in the nozzle and reducing the energy required by the drive for the switching operation.
  • the circuit breaker of Figs. 1 and 2 is a high voltage circuit breaker designed for voltages of e.g. at least 72.5 kV. It comprises a first contact assembly 1 and a second contact assembly 2, at least one of which shall be movable. In the example shown, the first contact assembly 1 is stationary, but could be movable as well, and the second contact assembly 2 is movable. Movable contact assembly 2 is movably connected to a stationary support 3. A rod 4 comprising a base member 4a and a tube 4b is connected to movable contact assembly 2 for moving the contact assembly 2 along a direction of displacement that generally coincides with the longitudinal axis 5 of the circuit breaker.
  • Stationary contact assembly 1 comprises a series of first, stationary contacts 6 arranged to contact a mating second contact 7 of movable contact assembly 2.
  • second contact 7 disengages from the first contacts 6 and an arc is formed in an arc volume.
  • the pressure generated in arc volume feeds back, in part, into a puffer volume 9 (also called “buffer volume”) formed between movable contact assembly 2 and support 3.
  • Puffer volume 9 is formed between a front plate 11 of support 3 and a cylinder housing 12 of movable contact assembly 2.
  • Front plate 11 is slideably arranged in cylinder housing 12.
  • Support 3 preferably comprises an integral tubular body 10 made from a single piece of cast metal.
  • Body 10 is of tubular, approximately cylindrical shape and extends around rod 4. It forms front plate 11 at one end, a cylindrical base section 13a at the opposite end, and a valve section 13b located between front plate 11 and base section 13a.
  • Rod 4 is located in an axial cavity 14 of body 10 and guided therein by frictional bearings 15.
  • Filling valves 16 are mounted in valve section 13b of body 10. In the present embodiment, a total of two such filling valves are provided, one of which can be seen in Fig. 1 .
  • the primary, conventional purpose of these valves is to allow the entry of gas into puffer volume 9 when it is expanded while closing the circuit breaker.
  • Each filling valve 16 comprises an opening 17 extending from the side of support 3 through front plate 11.
  • the openings 17 of the filling valves 16 can be closed by means of a valve plate 18.
  • Valve plate 18 is arranged in puffer volume 9 over at least one opening 17.
  • valve plate 18 When the pressure difference over valve plate 18 is low or when the pressure in the openings 17 is higher than in buffer volume 9, valve plate 18 is in its "first" position shown in the figures, where it rests against four retainer members 19 arranged at a distance from front plate 11 of support 3. Each retainer member 19 is mounted to a rod member 20 that connects it to support 3. Each rod member 20 extends into a recess 21 in valve section 13b of support 3 and is screwed into a bore 22 at the bottom of the recess 21.
  • Four spring members 24, preferably formed by helical springs 24, are extending around the rod members 20 from the bottom of each recess 21 to valve plate 18. They push valve plate 18 away from support 3 and against the retainer members 19.
  • valve plate 18 If, however, the pressure build-up from the arc exceeds a given threshold, the gas flow through the filling valves 16 will generate a pressure drop over valve plate 18 that is sufficient to overcome the force of the springs 24, and valve plate 18 will be brought into its "second" position where it is pushed against the openings 17, thereby closing the filling valves 16. A subsequent further pressure build-up in puffer volume 9 will further increase the force by which the valve plate 18 is pushed against front plate 11 of support 3, thereby keeping the filling valves 16 safely closed, which allows to achieve a pressure sufficient for extinguishing a powerful arc.
  • the area of the valve plate 18 is designed to be larger than the area of the openings 17, here in the form of bananaholes 17, in order to achieve a certain hysteresis between opening and closing pressure, such that reopening takes place at much lower pressure than closing of the filling valve oder valves 16.
  • the openings 17 of all filling valves 16 can be closed by the same valve plate 18, which ensures that all valves 16 close at the same time.
  • valve plate 18 and springs 24 of the embodiment shown so far can also be replaced by other types of closing members 18 and spring members 24.
  • a spring plate may be attached at a first end section thereof to front plate 11. If the pressure drop over the spring plate is small, the second end section of the spring plate is located over opening 17 at a distance from front plate 11. In the presence of a strong pressure build-up from the arc, the second end section is pushed against front plate 11 thereby closing opening 17.
  • the spring member(s) of the present invention must be designed such that closing member(s) is (are) biased in a direction shifted against the flow of gas exiting from the puffer volume 9, such that filling valve 16 remains open while the pressure build-up within puffer volume 9 remains below a given threshold.
  • the threshold should be chosen such that the filling valves 16 close, if the pressure build-up corresponds to the one generated by an arc that could not be extinguished with the filling valves 16 being open.
  • the exact level of the threshold depends on the circuit breaker design and can be found experimentally or by numerical simulations.
  • the design of the filling valve 16 shown here is simple and compact and similar to the design of conventional filling valves. Since it is an integral part of support 3, the costs for its assembly are low.
  • modified filling valve 16 increases the average speed of the circuit breaker. Together with the higher density in the arcing zone it increases the important capacitive voltage withstand capability. This gives the possibility to use drives with lower operating energy, and/or to increase switching capabilities with existing drives to higher ratings.
  • the invention relates to a method for blowing an arc in a circuit breaker, the circuit breaker comprising a puffer chamber with at least one filling valve 16, the method being characterized by the steps of: during opening of the circuit breaker, keeping the filling valve 16 open while a built-up pressure within said puffer volume 9 remains below a given pressure threshold, and closing the filling valve 16 when the built-up pressure within said puffer volume 9 exceeds said given pressure threshold.
  • the pressure threshold shall be chosen such that the filling valve 16 is being closed, if the built-up pressure equals or exceeds the minimal pressure which can be generated by an arc that is no more extinguishable with the filling valve 16 being open.

Landscapes

  • Circuit Breakers (AREA)
EP06405498A 2006-11-27 2006-11-27 Disjoncteur amortisseur de puissance avec pression réduite du volume d'amortissement Active EP1926116B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06405498A EP1926116B1 (fr) 2006-11-27 2006-11-27 Disjoncteur amortisseur de puissance avec pression réduite du volume d'amortissement
AT06405498T ATE523889T1 (de) 2006-11-27 2006-11-27 Puffer leistungsschalter mit reduziertem puffervolumendruck
KR1020070119927A KR101395098B1 (ko) 2006-11-27 2007-11-22 감소된 퍼퍼 볼륨 압력을 가진 퍼퍼 회로 차단기
JP2007303938A JP2008135392A (ja) 2006-11-27 2007-11-26 減少されたパファー・ボリューム圧力を備えたパファー・サーキット・ブレーカ
CN2007101857248A CN101256915B (zh) 2006-11-27 2007-11-27 具有降低的压气容积压力的压气式断路器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06405498A EP1926116B1 (fr) 2006-11-27 2006-11-27 Disjoncteur amortisseur de puissance avec pression réduite du volume d'amortissement

Publications (2)

Publication Number Publication Date
EP1926116A1 true EP1926116A1 (fr) 2008-05-28
EP1926116B1 EP1926116B1 (fr) 2011-09-07

Family

ID=37909835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06405498A Active EP1926116B1 (fr) 2006-11-27 2006-11-27 Disjoncteur amortisseur de puissance avec pression réduite du volume d'amortissement

Country Status (5)

Country Link
EP (1) EP1926116B1 (fr)
JP (1) JP2008135392A (fr)
KR (1) KR101395098B1 (fr)
CN (1) CN101256915B (fr)
AT (1) ATE523889T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2237300A1 (fr) * 2009-04-03 2010-10-06 Areva T&D Sas Chambre de coupure de courant à contact mobile à soufflage d'arc réalisé intégralement par l'intérieur de celui-ci, interrupteur by pass HVDC et sous station de conversion HVDC comprenant une telle chambre
CN113690093A (zh) * 2021-08-25 2021-11-23 西安西电开关电气有限公司 断路器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296363A2 (fr) * 1987-06-24 1988-12-28 Licentia Patent-Verwaltungs-GmbH Interrupteur à écoulement de gaz d'extinction autoengendré
US5589673A (en) * 1992-03-31 1996-12-31 Siemens Aktiengesellschaft Electric high-tension circuit breaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR820001919B1 (en) * 1979-07-25 1982-10-19 Hitachi Ltd Puffer type gas circuit breaker
JPH0536333A (ja) * 1991-07-31 1993-02-12 Mitsubishi Electric Corp パツフア形ガス遮断器
FR2837321B1 (fr) 2002-03-18 2004-08-06 Alstom Disjoncteur haute tension comprenant un clapet de decompression
ATE456857T1 (de) 2006-05-29 2010-02-15 Abb Technology Ag Blaskolbenschalter mit einem überdruckventil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0296363A2 (fr) * 1987-06-24 1988-12-28 Licentia Patent-Verwaltungs-GmbH Interrupteur à écoulement de gaz d'extinction autoengendré
US5589673A (en) * 1992-03-31 1996-12-31 Siemens Aktiengesellschaft Electric high-tension circuit breaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2237300A1 (fr) * 2009-04-03 2010-10-06 Areva T&D Sas Chambre de coupure de courant à contact mobile à soufflage d'arc réalisé intégralement par l'intérieur de celui-ci, interrupteur by pass HVDC et sous station de conversion HVDC comprenant une telle chambre
FR2944136A1 (fr) * 2009-04-03 2010-10-08 Areva T & D Sa Chambre de coupure de courant a contact mobile a soufflage d'arc realise integralement par l'interieur de celui-ci, interrupteur by pass hvdc et sous station de conversion hvdc comprenant une telle chambre.
CN113690093A (zh) * 2021-08-25 2021-11-23 西安西电开关电气有限公司 断路器

Also Published As

Publication number Publication date
CN101256915A (zh) 2008-09-03
EP1926116B1 (fr) 2011-09-07
KR20080047981A (ko) 2008-05-30
KR101395098B1 (ko) 2014-05-15
CN101256915B (zh) 2012-05-30
ATE523889T1 (de) 2011-09-15
JP2008135392A (ja) 2008-06-12

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