EP0183873A1 - Dérivateur de surtensions pour une ligne aérienne à courant continu - Google Patents

Dérivateur de surtensions pour une ligne aérienne à courant continu Download PDF

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Publication number
EP0183873A1
EP0183873A1 EP84114941A EP84114941A EP0183873A1 EP 0183873 A1 EP0183873 A1 EP 0183873A1 EP 84114941 A EP84114941 A EP 84114941A EP 84114941 A EP84114941 A EP 84114941A EP 0183873 A1 EP0183873 A1 EP 0183873A1
Authority
EP
European Patent Office
Prior art keywords
voltage
spark
overhead line
direct current
overvoltage
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.)
Withdrawn
Application number
EP84114941A
Other languages
German (de)
English (en)
Inventor
André Lerondeau
Yvan Iserentant
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.)
L 'electricite Industrielle Belge Sa
Original Assignee
L 'electricite Industrielle Belge 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 L 'electricite Industrielle Belge Sa filed Critical L 'electricite Industrielle Belge Sa
Priority to EP84114941A priority Critical patent/EP0183873A1/fr
Publication of EP0183873A1 publication Critical patent/EP0183873A1/fr
Withdrawn legal-status Critical Current

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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
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/14—Arcing horns
    • 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
    • H01T1/16—Series resistor structurally associated with spark gap

Definitions

  • the present invention relates to an overvoltage arrester for a direct current overhead line, in particular for the overhead line of electrical railways, with a spark gap connected to the overhead line.
  • a surge arrester of the type mentioned is known.
  • This protective device is used to neutralize clouds of ionized gases that arise during lightning strikes and migrate along the overhead lines of electrical trains. It consists of a spark gap, the first electrode of which is connected to, but spaced from, the overhead line and the second of which is grounded in parallel with the first electrode. The electrodes form an acute angle with the overhead line and are so wide that the ionized cloud cannot run between the electrodes. With this spark gap and with other horn spark gaps common in railway companies, it is to be expected that an overvoltage between the electrodes will ignite an arc which cannot extinguish itself due to the direct current carried in the arc.
  • a modern surge arrester known from DE-PS 16 38 120 for example, with stacked spark gaps accommodated in an insulator and, in addition, series-connected, likewise stacked voltage-dependent resistors, is only suitable for AC voltage lines.
  • the spark gaps are unable to interrupt a direct current.
  • the object of the present invention is to provide an overvoltage arrester for a direct current overhead line, in particular for the overhead line of electrical railways, which is capable of responding to an overvoltage to discharge emerging electrical charges to earth, to interrupt the subsequent direct current, has a high level of operational safety and economic advantages.
  • n is at least 20.
  • the first spark horn connected to the DC voltage line is advantageously mounted on a first post insulator and the second spark horn on a second post insulator enclosing the voltage-dependent resistor, the connections of the voltage-dependent resistor being electrically conductively connected to the armatures of the second post insulator and both post insulators on are attached to a common grounded frame.
  • This arrangement results in a further simplification in the structure of the surge arrester and offers economic advantages.
  • the surge arrester shown in the two figures essentially consists of a spark gap formed between the two spark horns 1 and 2 and three voltage-dependent resistors 3 connected downstream of the spark gap.
  • the exponent n is at least 20. This size of the exponent results in practice in most cases for the interruption of the direct current flowing in the arc sufficient increase in the resistance in the operating voltage recurring after the overvoltage has decayed. In this way it is possible to interrupt the direct current flowing in the arc with the aid of simple voltage-dependent resistors and a simple pair of spark horns.
  • the first spark horn 1 connected to the DC overhead line (not shown) is mounted on a first post insulator 4 and the second spark horn 2 on a second post insulator 5 enclosing the voltage-dependent resistors 3.
  • the connections of the voltage-dependent resistors 3 are electrically conductively connected to the fittings 6, 7 of the second post insulator 5.
  • the two post insulators 4, 5 are attached to a common grounded frame 8.
  • the overvoltage arrester described allows the short-circuit direct current flowing after an overvoltage to subside to be interrupted by simple means in the overvoltage arrester arrangement itself, as a result of which the short-circuit separations of the existing circuit breakers caused by overvoltages are absent.

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  • Thermistors And Varistors (AREA)
EP84114941A 1984-12-07 1984-12-07 Dérivateur de surtensions pour une ligne aérienne à courant continu Withdrawn EP0183873A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP84114941A EP0183873A1 (fr) 1984-12-07 1984-12-07 Dérivateur de surtensions pour une ligne aérienne à courant continu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84114941A EP0183873A1 (fr) 1984-12-07 1984-12-07 Dérivateur de surtensions pour une ligne aérienne à courant continu

Publications (1)

Publication Number Publication Date
EP0183873A1 true EP0183873A1 (fr) 1986-06-11

Family

ID=8192336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114941A Withdrawn EP0183873A1 (fr) 1984-12-07 1984-12-07 Dérivateur de surtensions pour une ligne aérienne à courant continu

Country Status (1)

Country Link
EP (1) EP0183873A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406099A1 (fr) * 1989-06-30 1991-01-02 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Isolateur de ligne à courant alternatif muni d'un éclateur de protection
EP0459727A1 (fr) * 1990-05-24 1991-12-04 Ngk Insulators, Ltd. Système dérivateur de surtensions
WO2017182267A1 (fr) * 2016-04-19 2017-10-26 Dehn + Söhne Gmbh + Co. Kg Dispositif de protection contre des surcharges pour des appareils de protection contre des surcharges

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2135353A (en) * 1936-12-31 1938-11-01 Ohio Brass Co Arcing electrode
DE1924063A1 (de) * 1969-05-12 1970-11-26 Inst Rundfunktechnik Gmbh Selbstregelnde Schutzeinrichtung fuer blitzgefaehrdete Anlagen
DE2647233A1 (de) * 1975-11-28 1977-06-08 Gen Electric Ueberspannungsableiter
US4467387A (en) * 1982-09-30 1984-08-21 General Electric Company Combination strut insulator and lightning arrester

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2135353A (en) * 1936-12-31 1938-11-01 Ohio Brass Co Arcing electrode
DE1924063A1 (de) * 1969-05-12 1970-11-26 Inst Rundfunktechnik Gmbh Selbstregelnde Schutzeinrichtung fuer blitzgefaehrdete Anlagen
DE2647233A1 (de) * 1975-11-28 1977-06-08 Gen Electric Ueberspannungsableiter
US4467387A (en) * 1982-09-30 1984-08-21 General Electric Company Combination strut insulator and lightning arrester

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0406099A1 (fr) * 1989-06-30 1991-01-02 Sediver, Societe Europeenne D'isolateurs En Verre Et Composite Isolateur de ligne à courant alternatif muni d'un éclateur de protection
FR2649243A1 (fr) * 1989-06-30 1991-01-04 Sediver Ste Europ Isolat Verre Isolateur de ligne a courant alternatif muni d'un eclateur de protection
EP0459727A1 (fr) * 1990-05-24 1991-12-04 Ngk Insulators, Ltd. Système dérivateur de surtensions
US5172297A (en) * 1990-05-24 1992-12-15 Ngk Insulators, Ltd. Lightning arrestor
WO2017182267A1 (fr) * 2016-04-19 2017-10-26 Dehn + Söhne Gmbh + Co. Kg Dispositif de protection contre des surcharges pour des appareils de protection contre des surcharges
CN109075534A (zh) * 2016-04-19 2018-12-21 德恩及索恩两合股份有限公司 用于过载保护过电压保护装置的系统
RU2725170C2 (ru) * 2016-04-19 2020-06-30 Ден + Зёне Гмбх + Ко. Кг Блок защиты от перегрузки устройств защиты от перенапряжений
CN109075534B (zh) * 2016-04-19 2020-09-04 德恩塞两合公司 用于过载保护过电压保护装置的系统
US11201464B2 (en) 2016-04-19 2021-12-14 Dehn Se + Co Kg Arrangement for overload protection for overvoltage protection equipment

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: LERONDEAU, ANDRE

Inventor name: ISERENTANT, YVAN