EP0475270A2 - Hochspannungsschalter mit Selbstbeblasung - Google Patents

Hochspannungsschalter mit Selbstbeblasung Download PDF

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Publication number
EP0475270A2
EP0475270A2 EP91114964A EP91114964A EP0475270A2 EP 0475270 A2 EP0475270 A2 EP 0475270A2 EP 91114964 A EP91114964 A EP 91114964A EP 91114964 A EP91114964 A EP 91114964A EP 0475270 A2 EP0475270 A2 EP 0475270A2
Authority
EP
European Patent Office
Prior art keywords
pressure storage
circuit breaker
chamber
springs
pressure
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
EP91114964A
Other languages
English (en)
French (fr)
Other versions
EP0475270A3 (en
EP0475270B1 (de
Inventor
Staffan Jacobsson
Tomas Otterberg
Gunnar Persson
Peter Stengard
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 AB
Original Assignee
Asea Brown Boveri AB
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 Asea Brown Boveri AB filed Critical Asea Brown Boveri AB
Publication of EP0475270A2 publication Critical patent/EP0475270A2/de
Publication of EP0475270A3 publication Critical patent/EP0475270A3/en
Application granted granted Critical
Publication of EP0475270B1 publication Critical patent/EP0475270B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H33/905—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 the compression volume being formed by a movable cylinder and a semi-mobile piston
    • 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
    • H01H33/88—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

Definitions

  • the invention relates to a high-voltage circuit breaker of self-blasting type according to the precharacterising part of claim 1.
  • the invention is primarily intended for circuit breakers with rated operating voltages of the order of magnitude of 100-300 kV, but it may, in principle, be used also for circuit breakers for voltages both above and below this range, for example for medium-voltage circuit breakers.
  • the reservoir for gas intended for arc extinction consists of two parts, namely, a pressure storage chamber, also referred to below as the pressure storage volume, and a compression chamber, also referred to below as the puffer volume.
  • the two volumes are separated by a non-return valve which is closed when the pressure in the pressure storage volume is higher than in the puffer volume.
  • the invention aims at providing a high-voltage circuit breaker of self-blasting type of the above-mentioned kind which exhibits an improved breaking capacity for the second opening operation in an open-close-open operation sequence.
  • the invention suggests a high-voltage circuit breaker of self-blasting type according to the introductory part of claim 1, which is characterized by the features of the characterizing part of claim 1.
  • the blast piston of the puffer volume rests on one or more springs which will be compressed when an overpressure builds up in the compression chamber.
  • These springs may be adapted in strength and prestress in such a way that, at a certain overpressure in the compression chamber, the blast piston will start moving and further compressing the springs.
  • the distance the blast piston is free to travel may be limited to a predetermined value.
  • the piston At the end of the opening operation, when the non-return valve located between the puffer volume and the pressure storage volume opens and the overpressure in the puffer volume falls, the piston will make a return movement whereby a puff of gas is pressed into the pressure storage volume.
  • This extra gas puff which is thus accomplished with the aid of the movable piston, is an important addition to the gas mass in the pressure storage volume, in which the temperature is considerably reduced, thus greatly improving the breaking capacity in the second opening operation in an open-close-open operation.
  • the circuit breaker shown in the drawing has a gas-tight casing 1 which at least partly consists of insulating material and which contains a fixed, plug- shaped arcing contact 2 and an axially movable sleeve-shaped arcing contact 3a.
  • the arcing contact 3a forms part of a movable contact unit 3 which includes a tubular contact rod 4 and an insulating operating rod (not shown).
  • the movable contact unit 3 is connected to an operating device of, for example, the design described in SE-A-9001116-4. With the aid of the operating device, the movable contact unit may be displaced between the closed position shown to the left in the figure and the open position shown to the right in the figure.
  • the movable contact unit 3 supports a hollow cylinder 5 of metal, which contributes in forming a pressure storage chamber 6, the volume of which is constant, and a compression chamber 7.
  • the movable contact unit 3 further supports an electrically insulating blast nozzle 8 with an annular channel 9, which connects the pressure storage chamber 6 to the region where the arc is burning during an opening operation.
  • the hollow cylinder 5 constitutes the movable operating current contact of the circuit breaker, which cooperates with a fixed operating current contact 10.
  • the pressure storage chamber 6 and the compression chamber 7 are coaxially arranged around the movable contact rod 4 and are separated by a wall 11 provided with openings 12. These openings function as a non-return valve with the help of an adjacent annular plate 13, which is arranged axially displaceable between the wall 11 and a limiting stop 14 fixed to the movable contact rod 4.
  • the non-return valve 12 to 14 allows flow only in a direction from the compression chamber 7 to the pressure storage volume 6.
  • the compression chamber 7 is delimited by a puffer cylinder 15, a blast piston 16, the movable contact rod 4 and the wall 11, which constitutes the bottom in the pressure storage chamber.
  • the puffer cylinder 15 in its turn is formed by the hollow cylinder 5.
  • the blast piston 16 consists of an annular plate resting on a number of springs 17, which support against a fixed counter support 18.
  • the contact rod 4 is pulled downwards with the aid of the operating device, the operating current contacts 5 and 10 being first separated.
  • the current then commutates over to the arcing contacts 2, 3a which become separated with an arc being created between them.
  • the arc heats the gas in the arc region, which results in increased gas pressure and starts a gas flow through the channel 9 into the pressure storage chamber 6.
  • the arc current follows the power system frequency sine curve, and when the current value approaches the zero crossing, the pressure in the arc region starts decreasing.
  • the contact movement has now proceeded so far that the plug contact 2 has released the nozzle outlet, where the pressure is now lower than in the pressure storage chamber 6. This gives rise to a gas flow from the pressure storage chamber 6 through the channel 9 and the nozzle 8 to a surrounding expansion chamber 19.
  • the arc is cooled by this flow and is extinguished at the following current zero crossing.
  • the gas in the compression chamber 7 is compressed because the distance between the wall 11 and the blast piston 16 then decreases. This causes an increase of pressure in the compression chamber which in turn moves the blast piston downwards against the resistance of the springs 17. Since in the embodiment shown the springs are prestressed by means of a rod 20, which is secured to the blast piston 16 and bears with an end stop 20a against the counter support 18, the downward movement of the blast piston 16 does not start until the overpressure in the compression chamber exceeds a certain level. This prestressing of the springs ensures that also in cases of small operating currents to be broken by the circuit breaker a sufficient increase of pressure will occur in the compression chamber.
  • a second end stop 21 may be provided that limits the distance the blast piston 16 can travel.
  • the pressure in the pressure storage chamber 6 is decreased, as described above, and the non-return valve 13 opens.
  • This additional gas entails a considerable reduction of the temperature in the pressure storage chamber 6, the breaking capacity of an immediately following opening operation thus being greatly improved.
  • the pressure increase in the pressure storage chamber 6, generated by the arc is insufficient to achieve an effective flow of arc extinguishing gas.
  • the arc extinction is performed with the aid of the compression chamber 7, in which a pressure build-up takes place during the opening operation because of the downward movement of the wall 11.
  • the pressure in the compression chamber 7 then becomes higher than in the pressure storage chamber 6, which causes the non-return valve 13 to open and cold arc-extinguishing gas to flow from the compression chamber 7 via the pressure storage chamber 6 and the channel 9 to the blast nozzle 8, where the arc is cooled and extinguished.
  • the blast piston 16 may be provided with an overpressure valve for discharge of gas from the compression chamber 7 to the expansion chamber 19 if the pressure in the compression chamber should exceed a certain level.
  • the blast piston may be provided with a non-return valve to refill the compression chamber with gas from the expansion chamber upon closing of the circuit breaker.
  • the invention is not limited to be used in connection with circuit breakers in which the breaker casing 1 is made of electrically insulating material, but the invention may also be used with metal-enclosed gas insulated circuit breakers.

Landscapes

  • Circuit Breakers (AREA)
EP19910114964 1990-09-11 1991-09-05 Hochspannungsschalter mit Selbstbeblasung Expired - Lifetime EP0475270B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9002885 1990-09-11
SE9002885A SE466979B (sv) 1990-09-11 1990-09-11 Hoegspaenningsbrytare av sjaelvblaasande typ

Publications (3)

Publication Number Publication Date
EP0475270A2 true EP0475270A2 (de) 1992-03-18
EP0475270A3 EP0475270A3 (en) 1992-11-19
EP0475270B1 EP0475270B1 (de) 1995-01-25

Family

ID=20380323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910114964 Expired - Lifetime EP0475270B1 (de) 1990-09-11 1991-09-05 Hochspannungsschalter mit Selbstbeblasung

Country Status (3)

Country Link
EP (1) EP0475270B1 (de)
DE (1) DE69106986T2 (de)
SE (1) SE466979B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696274A1 (fr) * 1992-09-29 1994-04-01 Alsthom Gec Disjoncteur à haute tension à auto-soufflage ayant une chambre de coupure à compression de gaz réduite.
EP0621616A1 (de) * 1993-04-20 1994-10-26 Hitachi, Ltd. Erdungsschalter
FR2715499A1 (fr) * 1994-01-25 1995-07-28 Gec Alsthom T & D Sa Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement.
US5561280A (en) * 1994-06-20 1996-10-01 Gec Alsthom T&D Ag Compressed gas-blast circuit breaker
EP0744759A1 (de) * 1995-05-24 1996-11-27 Siemens Aktiengesellschaft Hochspannungs-Leistungsschalter mit einem feststehenden Heizvolumen
FR2748598A1 (fr) * 1996-05-13 1997-11-14 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage
FR2751462A1 (fr) * 1996-07-22 1998-01-23 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage d'arc
EP0821382A1 (de) * 1996-07-23 1998-01-28 Gec Alsthom T & D Sa Hochspannungsschalter mit Selbstbeblasung
EP1091378A1 (de) * 1999-10-07 2001-04-11 Schneider Electric High Voltage SA Selbstbeblasender Lastschalter mit Überdruckventil und Füllklappe
WO2002080212A1 (es) * 2001-03-30 2002-10-10 Grupo Ormazabal, S.A. Sistema de soplado para interruptores de corte en carga
CN102024618A (zh) * 2009-09-10 2011-04-20 Ls产电株式会社 用于气体断路器的阀门以及具有该阀门的气体断路器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1765153A1 (de) * 1967-04-13 1971-07-01 Magrini Fab Riun Scarpa Selbstloeschender elektrischer Gasdruckschalter mit Schaltkammer mit einer Muendungsoeffnung
JPS4981874A (de) * 1972-12-14 1974-08-07
FR2291601A1 (fr) * 1974-11-15 1976-06-11 Alsthom Cgee Dispositif de coupure a autocompression
JPS5813565Y2 (ja) * 1977-10-31 1983-03-16 日新電機株式会社 吸引パッフア−型開閉器
DE3141324C2 (de) * 1981-10-17 1986-02-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Leistungsschalter

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1042770C (zh) * 1992-09-29 1999-03-31 Gec阿尔斯托姆T&D公司 带有气体弱压缩断流器的自充气型高压断路器
EP0591039A1 (de) * 1992-09-29 1994-04-06 Gec Alsthom T Et D Sa Hochspannung selbst-Blaslastscharter mit Schnittkammer mit reduzierter Gaskompression
FR2696274A1 (fr) * 1992-09-29 1994-04-01 Alsthom Gec Disjoncteur à haute tension à auto-soufflage ayant une chambre de coupure à compression de gaz réduite.
EP0621616A1 (de) * 1993-04-20 1994-10-26 Hitachi, Ltd. Erdungsschalter
US5543597A (en) * 1993-04-20 1996-08-06 Hitachi, Ltd. Grounding switch gear device
FR2715499A1 (fr) * 1994-01-25 1995-07-28 Gec Alsthom T & D Sa Disjoncteur à auto-soufflage à piston semi-mobile verrouillé pneumatiquement.
EP0667633A1 (de) * 1994-01-25 1995-08-16 Gec Alsthom T & D Sa Selbstbeblasener Leistungsschalter mit pneumatisch festlegbarem halbbeweglichem Kolben
US5561280A (en) * 1994-06-20 1996-10-01 Gec Alsthom T&D Ag Compressed gas-blast circuit breaker
EP0744759A1 (de) * 1995-05-24 1996-11-27 Siemens Aktiengesellschaft Hochspannungs-Leistungsschalter mit einem feststehenden Heizvolumen
US5898150A (en) * 1996-05-13 1999-04-27 Gec Alsthom & D Sa Gas-blast high-voltage circuit-breaker
EP0807946A1 (de) * 1996-05-13 1997-11-19 Gec Alsthom T & D Sa Hochspannungs-Blaskolbenschalter
FR2748598A1 (fr) * 1996-05-13 1997-11-14 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage
FR2751462A1 (fr) * 1996-07-22 1998-01-23 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage d'arc
CN1063279C (zh) * 1996-07-23 2001-03-14 Gec阿尔斯托姆T&D公司 自动吹弧高压断路器
US5808257A (en) * 1996-07-23 1998-09-15 Gec Alsthom T & D Sa High-voltage gas-blast circuit-breaker
FR2751782A1 (fr) * 1996-07-23 1998-01-30 Gec Alsthom T & D Sa Disjoncteur a haute tension a auto-soufflage d'arc
EP0821382A1 (de) * 1996-07-23 1998-01-28 Gec Alsthom T & D Sa Hochspannungsschalter mit Selbstbeblasung
EP1091378A1 (de) * 1999-10-07 2001-04-11 Schneider Electric High Voltage SA Selbstbeblasender Lastschalter mit Überdruckventil und Füllklappe
FR2799571A1 (fr) * 1999-10-07 2001-04-13 Schneider Electric High Voltag Disjoncteur a autoexpansion a clapet de surpression et de remplissage
WO2002080212A1 (es) * 2001-03-30 2002-10-10 Grupo Ormazabal, S.A. Sistema de soplado para interruptores de corte en carga
ES2179773A1 (es) * 2001-03-30 2003-01-16 Grupo Ormazabal Sa Sistema de soplado para interruptores de corte en carga
CN102024618A (zh) * 2009-09-10 2011-04-20 Ls产电株式会社 用于气体断路器的阀门以及具有该阀门的气体断路器
CN102024618B (zh) * 2009-09-10 2013-08-07 Ls产电株式会社 用于气体断路器的阀门以及具有该阀门的气体断路器

Also Published As

Publication number Publication date
SE9002885D0 (sv) 1990-09-11
EP0475270A3 (en) 1992-11-19
DE69106986D1 (de) 1995-03-09
SE466979B (sv) 1992-05-04
EP0475270B1 (de) 1995-01-25
DE69106986T2 (de) 1995-09-21
SE9002885L (sv) 1992-03-12

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