EP0647955A1 - Hochspannungsschalter zur Unterbrechung von Fehlerstrome mit verzögerte Nulldurchgänge - Google Patents

Hochspannungsschalter zur Unterbrechung von Fehlerstrome mit verzögerte Nulldurchgänge Download PDF

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Publication number
EP0647955A1
EP0647955A1 EP94402269A EP94402269A EP0647955A1 EP 0647955 A1 EP0647955 A1 EP 0647955A1 EP 94402269 A EP94402269 A EP 94402269A EP 94402269 A EP94402269 A EP 94402269A EP 0647955 A1 EP0647955 A1 EP 0647955A1
Authority
EP
European Patent Office
Prior art keywords
instant
circuit breaker
tzmax
blowing
fault
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
EP94402269A
Other languages
English (en)
French (fr)
Other versions
EP0647955B1 (de
Inventor
Jocelyn Tremblay
René Doche
André Lefrancois
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.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
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 GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0647955A1 publication Critical patent/EP0647955A1/de
Application granted granted Critical
Publication of EP0647955B1 publication Critical patent/EP0647955B1/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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/52—Driving mechanisms, i.e. for transmitting driving force to the contacts with means to ensure stopping at intermediate operative positions
    • 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
    • H01H33/006—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means adapted for interrupting fault currents with delayed zero crossings

Definitions

  • the present invention relates to a high voltage circuit breaker capable of breaking delayed zero crossing fault currents.
  • a high-voltage circuit breaker capable of breaking alternating fault currents of pseudo-period T and delayed zero crossing, passing through zero after a maximum period of time tzmax-t0 after the instant t0 of appearance of the fault, this period of time tzmax-t0 being determined by simulations or by tests, comprising a plurality of interrupting chambers in series equipped with means for opening at an instant t1 subsequent to the instant of the fault t0 and with blowing means of the arc designed to operate between instant t1 and an instant tc prior to tzmax-T.
  • the aim of the present invention is to solve the problem of breaking delayed zero-crossing fault currents with only conventional breaking chambers, the circuit breaker according to the invention requiring only a modification of the control apparatus. particularly simple.
  • the circuit breaker comprises means for reducing the blowing flow rate adapted so that the blowing is extended up to an instant t2 between tzmax-T and tzmax + T.
  • the advantage of this arrangement is that it does not require any device for intelligent detection of the fault current and that it is fully automatic.
  • the instant t2 is substantially equal to tzmax.
  • the time t2-t0 is substantially equal to 7 pseudo-periods.
  • the means for decreasing the blowing rate are means for slowing down the moving assembly from a threshold d of its normal displacement.
  • the threshold d is between 2D / 3 and D, D being the normal total travel of the moving assembly.
  • the slowdown of the moving assembly is carried out at constant speed.
  • the slowing means consist of a cylindrical part disposed between the piston and the cone, the ring being adjusted to obtain a certain radial clearance between it and the cylindrical part.
  • Figure 1 is a graph showing the variations of a delayed zero-crossing alternating current.
  • Figure 2 is a partial longitudinal sectional view of a conventional circuit breaker.
  • FIG. 3 is a graph representing as a function of time the displacement of the movable arcing contact of a circuit breaker according to the invention according to a first variant.
  • FIG. 4 is a graph representing as a function of time the displacement of the movable arcing contact of a circuit breaker according to the invention according to a second variant.
  • Figure 5 is a longitudinal sectional view of the end of a hydraulic cylinder comprising slowing means according to the invention.
  • the oscillogram in Figure 1 shows the fault current with the delayed current going through zero. On the abscissa is represented time and on the ordinate the intensity of the current.
  • the fault current appears at time t0 and contributes to delaying the next passage by zero until a certain time.
  • Such behaviors are determined by tests and / or simulations and it is therefore possible to determine, for a given network and the predicted fault currents, the maximum time lapse before the passage through zero and therefore the instant tzmax of this passage through zero.
  • FIG. 2 A breaking chamber of a circuit breaker according to the invention capable of breaking such fault currents is shown in FIG. 2. It is a conventional chamber comprising in an insulating envelope 10 the breaking elements comprising a first metal tube 2 constituting the main fixed contact and a second tube 3 coaxial with the first and forming the fixed arcing contact. These two contacts are connected to a first socket.
  • the envelope is filled with a gas with good dielectric properties such as sulfur hexafluoride under a pressure of a few bars.
  • the moving assembly comprises a metal tube 4 extended by a corona hood 5 and provided with a transverse metal partition 8 carrying contact fingers 6 constituting the movable main contact and a blowing tube 7 extended by contact fingers 8 constituting the movable arcing contact.
  • the partition 8 is pierced with holes for the passage of the blowing gas and carries a blowing nozzle 9 made of insulating material.
  • the blowing is provided by a fixed piston 11 disposed inside the tube 4. This tube 4 is connected to a second socket.
  • the circuit breaker comprises a plurality of such interrupting chambers per phase.
  • the displacement of the moving assembly is defined on the graphs represented in FIGS. 3 and 4.
  • the series interrupting chambers are equipped with means for opening at an instant t1 subsequent to the instant of the fault t0 and with arc blowing means operating between instant t1 and a subsequent instant.
  • the moving assembly is subjected to a normal opening movement at a normal opening speed defined by the normal operating conditions and this movement is interrupted at time tc shown in the figures.
  • the displacement of the mobile assembly is modified from a threshold d of its normal displacement to end at the instant t2 comprised between tzmax-T and tzmax + T and advantageously t2 is substantially equal to tzmax.
  • the threshold d is preferably between 2D / 3 and D. At this threshold d, the moving assembly is slowed down to a speed preferably constant in order to reach the total stroke D at time t2.
  • the threshold d is equal to the normal total opening stroke D.
  • the total stroke D ' is then increased and is greater than D.
  • the time t2 is preferably substantially equal to 110 milliseconds.
  • the modification of the movement of the mobile assembly can be carried out in various ways.
  • FIG. 5 The preferred embodiment of the means for slowing down the movable assembly, the latter being moved by means of a hydraulic cylinder, is shown in FIG. 5.
  • This figure represents the hydraulic cylinder in the tripping position, that is to say the opening of the contacts.
  • the piston 20 of the jack is at the end of the stroke.
  • the opening order was transmitted by a control coil causing the evacuation of a pressurized fluid by the valve 21.
  • the sliding valve 22, released from the thrust of the slide 23, s' is therefore moved to the right (according to the figure) under the action of its return spring 24. It therefore closed the passage of the pressurized oil through the channel 25 supplied by the inlet 32 and the pressurized oil which held the piston 20 in the high position corresponding to the closed position of the contacts was evacuated through the channel 26 released by the slide 23.
  • the piston 20 is equipped with a damping cone 27 which, during opening, cooperates with a ring 28 mounted in its housing with longitudinal play and also having radial play.
  • the purpose of this arrangement is, at the end of opening, to slow down the piston 20 along the section of curve A in FIGS. 3 or 4.
  • the play of the ring 28 allows on the one hand its self-adjustment around the cone 27 and on the other hand, the passage of the oil between it and the cone 27.
  • the retarding means according to the invention consist of a cylindrical part 29 disposed between the piston 20 and the cone 27 and preferably integral with the latter.
  • This cylindrical part 29 is of length 1.
  • the ring 28 is adjusted to obtain a certain radial clearance j between it and the cylindrical part 29.
  • the movement of the contacts is first of all slowed down in a conventional manner by the cone 27 along the section of curve A, then slowed down at constant speed taking into account the play j chosen and for a time t2-tc taking into account the length 1 chosen according to the straight section B shown in FIGS. 3 or 4.
  • the implementation of the invention therefore requires minimal adaptation of an existing circuit breaker.
  • switching chambers can be used depending on the characteristics of the network.
  • at least four rooms can be provided.
  • four rooms will be provided for a line with a voltage of 800kV.

Landscapes

  • Circuit Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Keying Circuit Devices (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
EP94402269A 1993-10-12 1994-10-10 Hochspannungsschalter zur Unterbrechung von Fehlerströmen mit verzögerten Nulldurchgängen Expired - Lifetime EP0647955B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9312118 1993-10-12
FR9312118A FR2711269B1 (fr) 1993-10-12 1993-10-12 Disjoncteur à haute tension capable de couper des courants de défaut à passage par zéro retardé.

Publications (2)

Publication Number Publication Date
EP0647955A1 true EP0647955A1 (de) 1995-04-12
EP0647955B1 EP0647955B1 (de) 1998-12-16

Family

ID=9451742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402269A Expired - Lifetime EP0647955B1 (de) 1993-10-12 1994-10-10 Hochspannungsschalter zur Unterbrechung von Fehlerströmen mit verzögerten Nulldurchgängen

Country Status (9)

Country Link
US (1) US5510591A (de)
EP (1) EP0647955B1 (de)
CN (1) CN1043386C (de)
AT (1) ATE174720T1 (de)
BR (1) BR9404059A (de)
CA (1) CA2117836C (de)
DE (1) DE69415259T2 (de)
FR (1) FR2711269B1 (de)
TR (1) TR28008A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107078500A (zh) * 2014-10-30 2017-08-18 Abb瑞士股份有限公司 交流电力系统与直流电力系统之间的方法、设备和接口装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0721197B1 (de) * 1995-01-06 2002-03-06 Gec Alsthom T & D Sa Lastschalter mit zwei Löschkammern je Pol
JP3589061B2 (ja) * 1999-01-25 2004-11-17 株式会社日立製作所 真空開閉装置及び真空開閉装置の開閉方法
SE516437C2 (sv) * 2000-06-07 2002-01-15 Abb Ab Förfarande, anordning, apparat och användning, dataprogram med dataprodukt för prediktering av en nollgenomgång hos en växelström
US20090260407A1 (en) * 2006-12-04 2009-10-22 Rodney Henson Locking assembly
JP5389279B2 (ja) * 2011-01-07 2014-01-15 三菱電機株式会社 開閉装置
TW201442051A (zh) * 2013-03-08 2014-11-01 Hitachi Ltd 氣體斷路器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE599314C (de) * 1932-03-16 1934-07-30 Bbc Brown Boveri & Cie Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
CH555589A (de) * 1973-07-12 1974-10-31 Sprecher & Schuh Ag Hochspannungsschalter, insbesondere druckgasschalter.
FR2398378A1 (fr) * 1977-07-21 1979-02-16 Mitsubishi Electric Corp Interrupteur de circuit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE555589C (de) * 1929-09-14 1932-07-27 Bernh Draeger Verfahren zur Erkennbarmachung von Kohlenoxyd mittels eines Reagenzpapiers
DE1665937A1 (de) * 1967-04-28 1971-04-08 Sachsenwerk Licht & Kraft Ag Loeschkammer fuer fluessigkeitsarme elektrische Leistungsschalter
US3659065A (en) * 1970-03-06 1972-04-25 Westinghouse Electric Corp Fluid-blast circuit interrupter with delayed moving contact travel
US4159498A (en) * 1977-11-17 1979-06-26 General Electric Company Electric circuit breaker with high current interruption capability
FR2641643B1 (fr) * 1989-01-10 1991-03-22 Alsthom Gec Disjoncteur a haute ou moyenne tension
FR2678770B1 (fr) * 1991-07-04 1995-02-10 Alsthom Gec Disjoncteur hybride haute tension a grande tension d'arc.
FR2681724B1 (fr) * 1991-09-24 1997-01-31 Alsthom Gec Disjoncteur haute tension a grande tension d'arc.
FR2683937B1 (fr) * 1991-11-20 1993-12-31 Gec Alsthom Sa Disjoncteur hybride pour la coupure des courants a grande composante continue.
FR2684486B1 (fr) * 1991-11-29 1994-01-07 Gec Alsthom Sa Disjoncteur a haute tension a courant alternatif a circuit lc.
FR2694127B1 (fr) * 1992-07-24 1994-08-19 Alsthom Gec Disjoncteur à deux chambres de coupure concentriques.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE599314C (de) * 1932-03-16 1934-07-30 Bbc Brown Boveri & Cie Schalter mit Lichtbogenloeschung durch stroemendes Druckgas
CH555589A (de) * 1973-07-12 1974-10-31 Sprecher & Schuh Ag Hochspannungsschalter, insbesondere druckgasschalter.
FR2398378A1 (fr) * 1977-07-21 1979-02-16 Mitsubishi Electric Corp Interrupteur de circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107078500A (zh) * 2014-10-30 2017-08-18 Abb瑞士股份有限公司 交流电力系统与直流电力系统之间的方法、设备和接口装置
CN107078500B (zh) * 2014-10-30 2019-02-15 Abb瑞士股份有限公司 交流电力系统与直流电力系统之间的方法、设备和接口装置

Also Published As

Publication number Publication date
DE69415259D1 (de) 1999-01-28
CA2117836A1 (fr) 1995-04-13
ATE174720T1 (de) 1999-01-15
CN1043386C (zh) 1999-05-12
FR2711269A1 (fr) 1995-04-21
US5510591A (en) 1996-04-23
BR9404059A (pt) 1995-07-18
TR28008A (tr) 1995-11-14
FR2711269B1 (fr) 1995-12-29
CN1105147A (zh) 1995-07-12
CA2117836C (fr) 1998-12-29
DE69415259T2 (de) 1999-08-12
EP0647955B1 (de) 1998-12-16

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