EP0808004B1 - Verfahren zur Löschung des Lichtbogens eines Netzfolgestromes in einer Funkenstrecke, sowie Funkenstreckenanordnung zur Durchführung des Verfahrens - Google Patents

Verfahren zur Löschung des Lichtbogens eines Netzfolgestromes in einer Funkenstrecke, sowie Funkenstreckenanordnung zur Durchführung des Verfahrens Download PDF

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Publication number
EP0808004B1
EP0808004B1 EP97107014A EP97107014A EP0808004B1 EP 0808004 B1 EP0808004 B1 EP 0808004B1 EP 97107014 A EP97107014 A EP 97107014A EP 97107014 A EP97107014 A EP 97107014A EP 0808004 B1 EP0808004 B1 EP 0808004B1
Authority
EP
European Patent Office
Prior art keywords
spark gap
arc
gas
gap arrangement
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 - Lifetime
Application number
EP97107014A
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German (de)
English (en)
French (fr)
Other versions
EP0808004A1 (de
Inventor
Jörg Dipl.-Ing. Pospiech
Friedhelm Prof.Dr.-Ing. Noack
Peter Dr.-Ing. Hasse
Peter Dr.-Ing. Zahlmann
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.)
Dehn SE and Co KG
Original Assignee
Dehn and Soehne GmbH and Co KG
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 Dehn and Soehne GmbH and Co KG filed Critical Dehn and Soehne GmbH and Co KG
Publication of EP0808004A1 publication Critical patent/EP0808004A1/de
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Publication of EP0808004B1 publication Critical patent/EP0808004B1/de
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/02—Means for extinguishing arc
    • H01T1/08—Means for extinguishing arc using flow of arc-extinguishing fluid
    • H01T1/10—Means for extinguishing arc using flow of arc-extinguishing fluid with extinguishing fluid evolved from solid material by heat of arc

Definitions

  • Spark gap arrangements are based on, among other things a preferred component due to its high energy dissipation capacity for overvoltage protection.
  • high voltage technology are discharge lines with a tubular, an arc combustion chamber surrounding housing and at the ends of the Provided housing known.
  • the hollow cylindrical Arc combustion chamber is inside with a Heating by the arc-emitting insulating material Mistake. Because of the aforementioned hollow cylindrical
  • the extinguishing gas can be arranged from all sides flow radially against the arc (see e.g. DE 710 387, and a blow gap according to CH 234 227). A statement or information about a current limitation is not to be found in the aforementioned references.
  • DE 759 626 also shows an electrode which is located within a Insulating block made of gas-emitting material is embedded and has an approximately conical bore, so that there the arc extinguishing gas acts on it from all sides.
  • the short-circuit current (so-called prospective short-circuit current) relatively high, e.g. Is 50 kA.
  • spark gap arrangements installed in low voltage supply systems, and this relates to the present invention, it can when discharging an overvoltage to a line follow current come.
  • a method for deleting the Arc of a line follow current of a surge current-carrying, to be used in low voltage supply systems Spark gap provided, for limiting the follow current Extinguishing gas flow radially from all sides against the arc of the line follow current is blown and this blowing over about the entire length of the arc is done using an extinguishing gas that is from an insulating material (Hard gas) of the spark gap is released, as well also an adjustment of the mass flow rate from the Spark gap arrangement outflowing heated gases takes place.
  • the hard gas used can be, for example, POM (polyoxymethylene) or PMMA (polymethylene methacrylate) or PTFE (Polytetrafluoroethylene).
  • a spark gap arrangement using the method according to claim 1 is the subject of claim 2.
  • Zum State of the art of the use claimed here in low-voltage supply systems is based on the above statements, e.g. also on the spark gap arrangement already mentioned referred to in DE-OS 29 34 236.
  • the electrodes kept at a distance by means of an insulating piece.
  • a chamber encloses the area of the arc discharge with a cylindrical circumferential wall made of insulating material (Hard gas) provided, which under the influence of heat Extinguishing gas releases.
  • This construction is relative complicated. It only does the above Pushing the arc away from a gap between the two electrodes. The ionized gases are released to the outside blown.
  • Another advantage of the invention is that already mentioned Self-control by the amount of through the Thermal radiation of the arc produced quenching gases from the depends on the strength of the arc current.
  • a very high arc current releases the correspondingly large amount of extinguishing gas required while a smaller arc compared to that correspondingly smaller amount of extinguishing gas from the hard gas material generated.
  • the method and the associated spark gap arrangement according to the invention thus create a automatic and current-dependent control of the arc resistance.
  • prospective Follow current in the network especially a low-voltage network limit to a few 100 A.
  • the spark gap arrangement automatically creates the most favorable extinguishing conditions.
  • such self-regulation already serves described above, by creating an essentially ohmic resistance of the arc itself without common zero crossing resulting in special control means the voltage and current curve.
  • the spark gap arrangement shown in FIGS. 1 and 2 for use in low-voltage supply systems consists of a first electrode 1, a second electrode 2, an insulating material body 3 which emits a gas when heated and a housing-like carrier element 4.
  • a rectilinear arc 6 is provided between these two electrodes and within the insulating body 3.
  • the carrier element 4 and the insulating material body 3 are each designed as hollow cylinders.
  • the insulating material body 3 can be designed as a hollow cylindrical lining of the inner wall of the carrier element 4.
  • the insulating material body 3 preferably consists of a so-called hard gas, ie a material that releases an extinguishing gas when heated appropriately.
  • a hard gas ie a material that releases an extinguishing gas when heated appropriately.
  • These can be, for example, POM (polyoxymethylene) as the preferred embodiment, and alternatively also PMMA (polymethylene methacrylate), or PTFE (polytetrafluoroethylene).
  • the insulating or hard gas body 3 surrounds the hollow cylindrical space in its interior, namely the above-mentioned arc combustion chamber 5.
  • this chamber 5 On the end faces of this chamber 5 there are the electrodes 1, 2, between which, in the event of a rollover, the rectilinear arc 6, which thus forms in the Central longitudinal axis AA of this spark gap arrangement and thus also runs in the central longitudinal axis of the arc combustion chamber 5.
  • the thermal energy emitted to the environment, in particular radiant heat from the arc 6, releases the quenching gas from the hard gas of the insulating body 3, which according to the arrows 7 from all sides of the hollow cylindrical jacket made of hard gas into the chamber 5 and thereby radially inward against the plasma of the Arc 6 flows.
  • the high resistance of the arc 6 necessary for effective current limitation is achieved by means of the cooling of the arc 6 which is hereby optimized by means of the gas flow 7.
  • an extinguishing gas that is particularly suitable for this purpose is used (see the examples above).
  • This also includes, for example, H 2 , SF 6 . It can also be seen that the advantageous radial blowing of the arc by the quenching gas is particularly promoted by the hollow cylindrical design of the arc chamber 6.
  • the gas heated by the arc flows through a Passage opening 8 of the electrode 2 according to the arrows 9 outward.
  • the opening 8 is preferably also hollow cylindrical formed and surrounds the central longitudinal axis A-A.
  • the heated gas is located in the arc combustion chamber a very high pressure that the desired cooling effect strengthened.
  • the gas can flow out through the opening 8 reach a speed that is a multiple of Speed of sound, i.e. of 1 mach. through Varying the diameter D2 of the passage opening 8 you can see the residence time of the gases in the arc combustion chamber and thus the conditions of the energy exchange between Affect arc and quenching gas.
  • the speed of passage of the hot gases through the opening 8 can by designing the cross section accordingly Opening 8 can be varied. Examples of this are shown in FIG. 3 and 4.
  • a small exit speed of the heated gases from the opening 8 causes a corresponding small mass throughput and thus a long dwell time heated gases in the arc combustion chamber.
  • the direction of flow 15 is hot gases. It only penetrates the cross section D1 smaller entry area of the passage opening 8 and occurs at their larger exit area in cross section D2 out. This causes a reduction in the exit speed compared to the entry speed at D1.
  • a cross-sectional shape according to FIG. 4 is also possible.
  • the one out the arc combustion chamber according to arrow 15 coming current heated gases first enter the narrowing Area 8 so that the speed of the gas flow up to a constriction 8 "and thus the mass throughput increased there accordingly.
  • Area 8 ' increases in the gas flow direction 15 its cross section.
  • this area 8 '"then decreases the speed of passage the gases.
  • the effect of this arrangement after Fig. 4 is that the narrowed opening 8 "only so large chooses that the gases released by a surge current can still be conveyed straight through, their Exit speed from the constriction 8 "as large as possible should be.
  • Fig. 5 shows two spark gap arrangements F according to the Invention within an installation housing 16, this Spark gap arrangements electrically connected in series are. The respective external connections are 17 and an electrical connection between the two spark gap arrangements numbered at 18. The from the spark gap arrangements escaping gas flows 19 are through openings 20 of the installation housing dissipated to the outside. A similar Arrangement, however, is for only one spark gap arrangement F. 6.
  • the figures according to Fig. 5th are for only one spark gap arrangement F.

Landscapes

  • Circuit Breakers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Insulators (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Discharge Heating (AREA)
EP97107014A 1996-05-14 1997-04-28 Verfahren zur Löschung des Lichtbogens eines Netzfolgestromes in einer Funkenstrecke, sowie Funkenstreckenanordnung zur Durchführung des Verfahrens Expired - Lifetime EP0808004B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19619334A DE19619334A1 (de) 1996-05-14 1996-05-14 Verfahren zur Löschung des Lichtbogens des Netzfolgestromes in einer Funkenstrecke sowie Funkenstreckenanordnung zur Durchführung des Verfahrens
DE19619334 1996-05-14

Publications (2)

Publication Number Publication Date
EP0808004A1 EP0808004A1 (de) 1997-11-19
EP0808004B1 true EP0808004B1 (de) 2003-03-19

Family

ID=7794233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107014A Expired - Lifetime EP0808004B1 (de) 1996-05-14 1997-04-28 Verfahren zur Löschung des Lichtbogens eines Netzfolgestromes in einer Funkenstrecke, sowie Funkenstreckenanordnung zur Durchführung des Verfahrens

Country Status (5)

Country Link
EP (1) EP0808004B1 (da)
AT (1) ATE235115T1 (da)
DE (2) DE19619334A1 (da)
DK (1) DK0808004T3 (da)
ES (1) ES2193294T3 (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717802B4 (de) * 1997-04-26 2009-09-17 Dehn + Söhne GmbH + Co KG Funkenstrecke
DE19818674B4 (de) 1998-04-27 2004-04-29 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
DE19845889B4 (de) * 1998-10-06 2007-03-01 Dehn + Söhne GmbH + Co KG Funkenstreckenanordnung
DE102007056165A1 (de) 2007-11-21 2009-05-28 Epcos Ag Überspannungsableiter mit thermischem Überlastschutz
DE102014209261A1 (de) * 2014-05-15 2015-11-19 Phoenix Contact Gmbh & Co. Kg Funkenstreckenanordnung mit verbesserter Kühlung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB528895A (en) * 1938-05-21 1940-11-08 Westinghouse Electric Int Co Improvements in or relating to a method of and apparatus for protecting electrical apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE566462C (de) * 1931-06-16 1932-12-17 Aeg Elektrischer Apparat mit druckgasbeblasenen Elektroden
DE710387C (de) * 1937-08-14 1941-09-12 Siemens Schuckertwerke Akt Ges UEberspannungssicherung
DE759626C (de) * 1938-12-23 1953-05-26 Siemens Schuckertwerke A G Selbstloeschende Entladungsstrecke
DE732002C (de) * 1939-10-13 1943-02-19 Aeg UEberspannungsableiter
CH234227A (de) * 1943-07-03 1944-09-15 Oerlikon Maschf Uberspannungsableiter mit Blasfunkenstrecke.
AT311478B (de) * 1971-06-18 1973-11-26 Elin Union Ag Hochspannungslast- oder -leistungsschalter
US4444671A (en) * 1976-03-29 1984-04-24 S&C Electric Company Arc extinguishing material
DE2934236C2 (de) * 1979-08-24 1983-02-24 Aeg-Telefunken Ag, 1000 Berlin Und 6000 Frankfurt Überspannungsableiter mit Funkenstrecke
DE2934238C2 (de) * 1979-08-24 1982-02-18 Dehn + Söhne GmbH + Co KG, 8500 Nürnberg Funkenstrecke
DE3829650A1 (de) * 1988-09-01 1990-03-15 Telefunken Systemtechnik Kombinierte loeschfunkenstrecke

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB528895A (en) * 1938-05-21 1940-11-08 Westinghouse Electric Int Co Improvements in or relating to a method of and apparatus for protecting electrical apparatus

Also Published As

Publication number Publication date
DK0808004T3 (da) 2003-07-14
EP0808004A1 (de) 1997-11-19
ATE235115T1 (de) 2003-04-15
DE19619334A1 (de) 1997-11-20
ES2193294T3 (es) 2003-11-01
DE59709538D1 (de) 2003-04-24

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