EP3642854A1 - Parafoudre et procédé de fabrication d'un parafoudre - Google Patents

Parafoudre et procédé de fabrication d'un parafoudre

Info

Publication number
EP3642854A1
EP3642854A1 EP18753118.1A EP18753118A EP3642854A1 EP 3642854 A1 EP3642854 A1 EP 3642854A1 EP 18753118 A EP18753118 A EP 18753118A EP 3642854 A1 EP3642854 A1 EP 3642854A1
Authority
EP
European Patent Office
Prior art keywords
glass fiber
fiber material
surge arrester
arrester
column
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Withdrawn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
EP18753118.1A
Other languages
German (de)
English (en)
Inventor
Henrik Roggow
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP3642854A1 publication Critical patent/EP3642854A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/034—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/02—Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/102—Varistor boundary, e.g. surface layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/24—Thermosetting resins

Definitions

  • the invention relates to a surge arrester according to claim 1 and a manufacturing method for a
  • Overvoltage arrester according to claim 8.
  • Surge arresters are used in the medium voltage and high voltage range in order to safely derive so-called overvoltages, ie voltages far above the nominal voltages provided in the operation, to ground. This avoids damage to equipment such as transformers.
  • a surge arrester for high voltage can be arranged on an overhead line and in case of lightning strike or short circuit inadmissibly discharge high currents towards the earth.
  • Surge arresters essentially comprise a housing and metal oxide resistors, so-called varistors. Va varistors are electrical resistors whose electrical Wi ⁇ derstandswert up to a maximum design threshold voltage is very high and is greatly reduced above the threshold voltage, so that the surge arrester to a good electrical conductor.
  • metal oxide resistors are arranged in disk form one above the other in a housing and connected to the respective ends of the housing with the high voltage potential and the ground potential.
  • the surge ⁇ Vietnamese sabieiter is barely conductive in control mode, so only a small leakage current flows to earth. In the event of a fault, on the other hand, a high leakage current flows.
  • the housing serves to protect the resistors against external influences and mechanical stresses.
  • Polymer housings usually consist of different materials. Reinforcement elements in the interior provide the required mecha ⁇ African strength.
  • Various embodiments of the auctioning ⁇ fung elements are common: GRP rods, FRP pipes or harzge- soaked fiberglass ribbons or mats. These are then covered by another material, eg silicone or ethylene-propylene-diene rubber (EPDM), to ensure protection against environmental influences.
  • EPDM ethylene-propylene-diene rubber
  • the surge arrester is provided for the medium voltage level and has a plurality of varistor blocks which are stacked to form a rejection column.
  • the dissipation column is mechanically stabilized by wrapping it with a preimpregnated fiber material.
  • the fibrous material is designed as a fabric, ie that individual fibers of the material intersect alternately over ⁇ .
  • a conventional silicone housing with screens to extend a creepage path is applied, eg, by an injection molding process.
  • Silicone is permeable to water vapor. During operation, this causes water vapor to constantly diffuse into and out of the housing. Dammed water can lead to partial discharges and / or increase the power loss in the device. Both mechanisms shorten the lifetime of the device and lead to premature failure. Particularly critical is the prevention of the ingress of moisture ⁇ ability in devices whose mechanical reinforcement is made by resin-impregnated glass fiber ribbons or mats.
  • the object of the invention is to provide a surge arrester. admit that comparatively particularly weather-resistant, long-lasting and inexpensive to produce.
  • the invention solves this problem by a surge arrester according to claim 1.
  • the tape first single glass ⁇ fibers (for example, each of 4) twisted bundles.
  • Fibers that the cavities between the fibers are not geeigne ⁇ te passage area for more water. It is exploited that the thinner fibers twist better and thus cavities are avoided or kept small. This makes the processing easier and less expensive, since the wrapping and curing of the strip can take place under air.
  • a possible alternative solution is to cure the tape under vacuum, removing the air from the tape.
  • this has the serious disadvantage that it makes the processing process more complicated and much more expensive. It is particularly preferred if the glass fiber material glass ⁇ fibers having a diameter of at most 7 [im. This causes a still further improved durability of Abieiters.
  • the surge arrester is designed for medium-voltage applications.
  • the arrester according to the invention at medium voltage is particularly good one ⁇ settable because it is durable and also inexpensive to manufacturer's position because of the expensive and complex Ar ⁇ beits Colour of vacuuming to remove air bubbles is saved.
  • the glass fiber material has a resin content of more than 21 percent by weight. This is an advantage because tests have shown that a sol ⁇ ches fiberglass material has a particularly good resistance to moisture in conjunction with the present invention strig ⁇ NEN glass fibers. A high proportion of resin means a stable hardening and closing of cavities. A higher resin content also reduces the air contained in the cured belt. A resin content of more than 21 Ge ⁇ weight percent can, for example, according to the Chinese standard JB / T can be set from 6236 to 2015, for example, a glass fiber reinforced ⁇ sermaterial of the "2845-W".
  • the glass fiber material has a content of volatile substances in the resin of less than 4% by weight have shown that such a glass fiber material in conjunction ⁇ tion with thin glass fibers according to the invention has a particularly good resistance to moisture ⁇ .
  • Volatile substances are substances that either evaporate at room temperature or when the glass fiber material is heated to harden the resin. This causes gas bubbles in being cured fiberglass material that must be avoided or greatly reduced in order to achieve good weatherability ⁇ permanence.
  • a proportion of volatile substances in the resin of less than 4 percent by weight can, for example after the see Chinese Standard JB / T adjusted 6236-2015 ⁇ to, for example, a glass fiber material of the type "2845- W".
  • the glass fiber material is applied by wrapping the arrester. This is an advantage because this allows a simple and cost herstel ⁇ development of the arrester.
  • the glass fiber material is formed as a band which has a smaller width than the length of the arrester column.
  • the band is formed more ⁇ fold wound around the arrester column. This is an advantage because a particularly dense layer around the arrester column is formed.
  • a housing of a Ma ⁇ TERIAL that at least partially comprises silicone. This is an advantage because silicone is a cost-effective and long-proven case material.
  • the object is to provide a manufacturing method for a surge arrester, which permits a comparatively low cost herstel ⁇ development of a highly weather-resistant and long haltba ⁇ ren surge arrester.
  • FIG. 3 shows an intermediate step in the manufacture of a surge arrester.
  • FIG. 1 shows a section through a surge arrester 1 according to the invention.
  • the surge arrester 1 has a housing 2 made of silicone.
  • the housing 2 has a Be ⁇ screen 3.
  • a Ableit yarn consisting of several stacked Varistortionn 8.
  • At the top and bottom of the Ableit yarn is in each case an end fitting 6.
  • At the end fitting 6, a threaded bolt 4 is fixed by a nut 5.
  • the Ablesit yarn with Varistortionn 8 is wrapped with a Glasfa ⁇ sermaterial 7, the glass fibers having at most 8 ⁇ diameter.
  • the glass fiber material 7 has a hardened resin, so that the glass fiber material 7 mechanically stabilizes the Ab ⁇ guide column with Varistorin 8 and also substantially reduces the penetration of water through the housing 2 to the Varistorin 8.
  • the glass fiber material 7 is particularly impermeable to water because it has a resin content of more than 21 weight percent to ⁇ . This effect is further improved in that the resin used comprises less than 4 weight percent Peek ⁇ term substances.
  • the glass fiber material 9 has a fiber diameter of 7 ⁇ ⁇ on.
  • the glass fiber material 10 has egg ⁇ nen fiber diameter of 9 ⁇ .
  • the fiber material 9 with the ver ⁇ like smaller fiber diameter of 7 ⁇ has a much finer fiber structure. This finer fiber ⁇ structure is effected by a better twisting of the individual glass fibers to the illustrated strip material 9.
  • FIG. 3 shows an intermediate step in the production of a surge arrester according to the invention.
  • Varistor disks 8 are stacked on top of each other, so that a Ableit yarn is formed.
  • an end fitting 6, 13 is provided in each case.
  • the Endarmatu ⁇ ren are compressed by pressure in the direction of the arrows 16. This provides in the form of a band not ⁇ manoeuvrable for further processing stability of the Ableit yarn for wrapping with glass fiber material.
  • the Endarma- tures 6, 13 each have an annular recess 14.
  • the annular recess 14 makes it possible to wrap the glass ⁇ fiber material band 9 tightly around the end fitting and then in a slightly tapered shape the entire length to wrap the delivery column with the band 9. Shown is an intermediate step, in which from left to right about a quarter of the length of the Ableit yarn was already wrapped with the tape 9 um ⁇ .
  • the wrapping is done by rotating the Ableit Vietnamese sheaver with end ⁇ fittings 6, 13 about the axis 15 in a clockwise direction.
  • the band 9 on the right side reaches the bulges 14 of the end fitting 13.
  • the band 9 can be rolled tightly so that it is in the bulge 14 comes to rest.
  • the band 9 can again be slightly bevelled in the opposite direction, ie in the direction of the end fitting 6.
  • the now tapered in the other direction winding again comes to lie in the recess 14 of the end fitting 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Thermistors And Varistors (AREA)

Abstract

La présente invention concerne un parafoudre comprenant une colonne de parafoudre qui est pourvue d'une pluralité de varistance et qui est stabilisée avec un matériau en fibres de verre. Le matériau en fibres de verre est préimprégné d'une résine. L'invention est caractérisée en ce que le matériau en fibres de verre comporte des fibres de verre ayant un diamètre de 8 µm maximum. De plus, la présente invention concerne un procédé de fabrication de parafoudre correspondant.
EP18753118.1A 2017-08-16 2018-08-02 Parafoudre et procédé de fabrication d'un parafoudre Withdrawn EP3642854A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017214287.1A DE102017214287A1 (de) 2017-08-16 2017-08-16 Überspannungsableiter und Herstellungsverfahren für einen Überspannungsableiter
PCT/EP2018/070985 WO2019034439A1 (fr) 2017-08-16 2018-08-02 Parafoudre et procédé de fabrication d'un parafoudre

Publications (1)

Publication Number Publication Date
EP3642854A1 true EP3642854A1 (fr) 2020-04-29

Family

ID=63168391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18753118.1A Withdrawn EP3642854A1 (fr) 2017-08-16 2018-08-02 Parafoudre et procédé de fabrication d'un parafoudre

Country Status (5)

Country Link
US (1) US10446296B2 (fr)
EP (1) EP3642854A1 (fr)
CN (1) CN110998756A (fr)
DE (1) DE102017214287A1 (fr)
WO (1) WO2019034439A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11636960B2 (en) * 2018-08-30 2023-04-25 Siemens Energy Global GmbH & Co. KG Surge arrester and production method for a surge arrester
US11757279B2 (en) 2020-08-25 2023-09-12 Eaton Intelligent Power Limited Surge arrester for fire mitigation
DE102020133830B3 (de) * 2020-12-16 2022-03-31 TRIDELTA Meidensha GmbH Überspannungsableiter mit Wickeldesign und Verfahren zu seiner Herstellung

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993726A (en) * 1974-01-16 1976-11-23 Hercules Incorporated Methods of making continuous length reinforced plastic articles
US4588538A (en) * 1984-03-15 1986-05-13 Celanese Corporation Process for preparing tapes from thermoplastic polymers and carbon fibers
FR2619244B1 (fr) * 1987-08-06 1992-09-04 Sediver Ste Europ Isolateurs V Procede de fabrication d'un parafoudre et parafoudre obtenu par ce procede
JPH07118237B2 (ja) * 1990-12-28 1995-12-18 日本碍子株式会社 避雷碍子
JPH06116851A (ja) * 1992-10-05 1994-04-26 Polyplastics Co 繊維強化熱可塑性樹脂構造体およびその製造法
SE516123C2 (sv) * 1994-05-13 2001-11-19 Abb Ab Ventilavledare, metod för framställning av en sådan samt användning
FR2747500B1 (fr) * 1996-04-12 1998-06-26 Soule Materiel Electr Parafoudre perfectionne a base de varistances
JP3665416B2 (ja) * 1996-05-02 2005-06-29 音羽電機工業株式会社 避雷器
US6008975A (en) * 1997-03-03 1999-12-28 Mcgraw-Edison Company Self-compressive surge arrester module and method of making same
JP2001023807A (ja) * 1999-07-09 2001-01-26 Toshiba Corp 避雷器およびその製造方法
US7015786B2 (en) * 2001-08-29 2006-03-21 Mcgraw-Edison Company Mechanical reinforcement to improve high current, short duration withstand of a monolithic disk or bonded disk stack
GB0414131D0 (en) * 2004-06-24 2004-07-28 Tyco Electronics Raychem Irela A method of manufacturing a crimped assembly, and related apparatuses
WO2010107059A1 (fr) * 2009-03-19 2010-09-23 昭和電工株式会社 Composition pour remplissage d'entrefer de décharge et protecteur contre les décharges électrostatiques
CN101866731B (zh) 2010-02-12 2013-04-03 陕西泰普瑞电工绝缘技术有限公司 无局放复合玻璃纤维缠绕管的制备方法
EP2629305B1 (fr) * 2012-02-20 2014-04-02 ABB Technology AG Matériaux composites pour une utilisation dans des dispositifs haute tension
JP6202857B2 (ja) * 2013-04-02 2017-09-27 株式会社東芝 電気機器用コーティング材
CN104124011A (zh) * 2014-08-14 2014-10-29 陈晓光 一种一体式避雷器绝缘子

Also Published As

Publication number Publication date
US20190057797A1 (en) 2019-02-21
CN110998756A (zh) 2020-04-10
DE102017214287A1 (de) 2019-02-21
WO2019034439A1 (fr) 2019-02-21
US10446296B2 (en) 2019-10-15

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