EP0041917B2 - Transformateur de tension inductif entièrement isolé pour un appareillage de commutation à haute tension à enveloppe métallique - Google Patents

Transformateur de tension inductif entièrement isolé pour un appareillage de commutation à haute tension à enveloppe métallique Download PDF

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Publication number
EP0041917B2
EP0041917B2 EP81730049A EP81730049A EP0041917B2 EP 0041917 B2 EP0041917 B2 EP 0041917B2 EP 81730049 A EP81730049 A EP 81730049A EP 81730049 A EP81730049 A EP 81730049A EP 0041917 B2 EP0041917 B2 EP 0041917B2
Authority
EP
European Patent Office
Prior art keywords
high voltage
metal
voltage transformer
supply line
voltage
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
Application number
EP81730049A
Other languages
German (de)
English (en)
Other versions
EP0041917A3 (en
EP0041917B1 (fr
EP0041917A2 (fr
Inventor
Jürgen Dr.-Ing. Moeller
Manfred Dr.-Ing. Weniger
Werner Keil
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 AG
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
Priority to AT81730049T priority Critical patent/ATE12437T1/de
Publication of EP0041917A2 publication Critical patent/EP0041917A2/fr
Publication of EP0041917A3 publication Critical patent/EP0041917A3/de
Publication of EP0041917B1 publication Critical patent/EP0041917B1/fr
Application granted granted Critical
Publication of EP0041917B2 publication Critical patent/EP0041917B2/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/24—Voltage transformers
    • H01F38/26—Constructions

Definitions

  • the invention is based on an inductive voltage converter for a fully insulated, metal-encapsulated high-voltage switchgear assembly with a boiler that can be flanged onto the metal capsule of the switchgear assembly, in which the active system of the voltage converter is located with a high-voltage electrode coaxially surrounding the high-voltage winding and in which a high-voltage supply line ends, in which the Cable train between high-voltage supply line and high-voltage winding, a resistance device connected to the high-voltage electrode is switched on.
  • the high-voltage winding of the active system is encompassed by an annular high-voltage electrode, which is held on the high-voltage winding by means of support elements.
  • the support means contain a guide plate as well as lock parts, guide strips, threaded bushes and grub screws and can consist of resistance material in order to simultaneously serve to dampen discharge currents of empty lines.
  • a high-voltage lead is mechanically and electrically connected at one end by means of connection angles; the other end of the high-voltage supply line is fastened in a terminating insulator of the boiler.
  • inductive voltage transformers connected to cables can be subjected to such a large current on the primary side during discharge processes that not only thermal but also mechanical overloading of the voltage transformer occurs; the mechanical overload can become so great that the entire inductive voltage converter is permanently damaged. Will one in the cauldron .
  • - Inductive voltage converter for fully insulated, metal-encapsulated high-voltage circuits housed a resistance device that is switched on in the cable between the high-voltage supply line and the high-voltage winding, then the current through the primary winding of the voltage converter is reduced and thus mechanical overload is avoided.
  • the invention has for its object to design an inductive voltage converter for a fully insulated, metal-encapsulated high-voltage switchgear with a resistance device in the cable between the high-voltage supply line and the high-voltage winding so that the resistance device is not only inexpensive and mechanically very strong, but also because of the low height in the boiler is easy to install even without an extension.
  • the resistance device extends from the high-voltage supply line to the high-voltage electrode and consists of a -saltic structure of several mass resistance elements, whereby between two adjacent mass resistance elements there is a round metal disk, which is provided with an injection of the same height from each side and which Press-fit operations are cyclically offset in successive metal disks in the circumferential direction in such a way that a helical arrangement of the mass resistance elements is created; the metal disks and the mass resistance elements are held together by means of pressure plates located at the ends of the columnar structure, of which one pressure plate is fastened to the high-voltage feed line and the other pressure plate has a recess into which a plug device of the high-voltage electrode engages.
  • the voltage converter according to the invention By accommodating the resistance device in such a way that it extends from the high-voltage feed line to the high-voltage electrode, it is achieved in the voltage converter according to the invention that the boiler of the voltage converter does not need to be enlarged because of the resistance device, because usually between the high-voltage electrode and the end of the boiler facing the switchgear is sufficient. There is space to accommodate the resistance device.
  • the voltage converter according to the invention because of the columnar structure of its resistance device, the voltage converter according to the invention is of low-voltage design and mechanically very strong. A relatively low overall height can also be achieved with the columnar resistance device, which is particularly advantageous in view of the limited space in the boiler of an inductive voltage converter.
  • a voltage converter is known from DE-C-655 694, in which a slack resistance cord is provided between the high-voltage feed line and the high-voltage winding.
  • This converter is designed as a high-voltage outdoor voltage converter.
  • Arrangements are also known from FR-A-1 318 052, DE-C-1 015 909 and DE-C-652 205, in which disk-shaped resistance elements and metal plates have a columnar shape Form the structure, however, these are surge arresters, in which the individual resistance elements do not represent ohmic resistors, but have a behavior of their resistance values that is dependent on the level of the surge voltage.
  • the one pressure plate advantageously carries a threaded pin which is received by a threaded bore in the high-voltage supply line.
  • the recess in the other pressure plate is cylindrical and widens in a funnel shape towards the high-voltage electrode.
  • the metal disks have at least one further press-in for receiving an insulating spacer element on each side and diametrically opposite the press-in.
  • two further press-ins are provided, as a result of which the individual metal disks press against one another when pressure is exerted on the pressure plates, forming a straight columnar structure.
  • the metal disks furthermore advantageously have three through holes offset by 120 ° from one another, through which clamping bolts made of insulating material are guided; the clamping bolts clamp the pressure plates together. In this way, a mechanically fixed configuration of the resistance device is achieved.
  • the clamping bolts made of insulating material are advantageously held in one pressure plate by pins which engage in transverse bores of the clamping bolts.
  • the clamping bolts advantageously carry threaded bushes onto which nuts are screwed for bracing.
  • the metal disks are advantageously provided with a circumferential bead on the edge.
  • the active system 2 of the inductive voltage converter is accommodated in a boiler 1 shown only partially in FIG. 1.
  • a boiler 1 shown only partially in FIG. 1.
  • FIG. 1 Of the active system 2, only part of an iron core 3 and a high-voltage electrode 4 are shown in FIG. 1, which includes an unrecognizable high-voltage winding on the outside.
  • a plug device 5 is attached to the outside of the high-voltage electrode 4, which creates an electrical connection to a resistance device 6.
  • the resistance device 6 contains a pressure plate 7 at its upper end in FIG. 1 and a further pressure plate 8 at its lower end in FIG. 1. Between the pressure plates 7 and 8 there are a plurality of round metal disks 9, between each of which a mass resistance element 10 is housed.
  • the resistance device 6 is held together by three clamping bolts 11 made of insulating material, which are guided through through holes 12, 13 and 14 of the metal disks 9, which are each offset by 120 ° (cf. also FIGS. 2 and 3).
  • each of the clamping bolts 11 is guided in through holes 15 in one pressure plate 7 and held there by pins 16 which are guided through transverse bores 17.
  • the clamping bolts 11 are each provided with a threaded bushing 18 (see FIG. 3).
  • the threaded bushings 18 can be glued to the clamping bolts.
  • a nut 20 is screwed onto the threaded bushings 18 and, as a result, a clamping force is exerted on the pressure plates 7 and 8 and thus also on the metal disks 9 and the mass resistance elements. This creates a resistance device 6 with a relatively high mechanical strength.
  • the other pressure plate 8 has a recess 21 which is cylindrical and extends in a funnel shape towards the high-voltage electrode 4. This simplifies the insertion of the plug device 5 into the recess 21 when the inductive voltage converter is being installed.
  • the one pressure plate 7 is provided with a threaded pin 22 which is received by a threaded bore 23 of a high-voltage supply line 24.
  • the threaded pin 22 thus provides a secure mechanical and galvanic connection of the resistance device 6 to the high-voltage supply line 24.
  • the high-voltage supply line 24 in turn is embedded in an insulator 25, which is held on an end plate 28 by means of a pressure ring 26 with a sealing ring 27 interposed therebetween.
  • This end plate 28 is screwed to a flange 30 of the boiler 1 with the interposition of a further sealing ring 29.
  • each individual metal disc 9 has an indentation 31 and 32 on its different sides. These press-in are offset by 120 ° on the metal disc 9 and are each designed such that they are each once concave and convex when viewed from one side. Diametrically opposite the press-in 31 and 32 there are two further press-in 33 and 34, which serve to receive cylindrical spacing elements, not shown, made of insulating material. These are spacers designed in accordance with the height of the mass resistance elements in their length and ensure that when the resistance device 6 is compressed, the individual metal disks 9 lie parallel to one another and do not tilt.
  • the individual metal disks 9 are each stacked on top of one another such that successive metal disks are cyclically offset in the lateral direction in such a way that a helical arrangement of the mass of resistance elements 10 is formed.
  • a concave pressing in of a disk is opposed to a convex pressing in of the next following disk, as a result of which the individual mass resistance elements are held securely.
  • a mechanically very stable resistance device with a relatively low overall height is achieved.
  • the voltage converter described also maintains its mechanical structure in the event of large currents threatening in the event of abnormal operating conditions, this property being achieved without lasting structural changes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Breakers (AREA)
  • Surgical Instruments (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Transformers For Measuring Instruments (AREA)

Claims (8)

1. Transformateur de tension inductif pour une -installation de commutation haute tension entièrement isolée et placée blindage métallique, comportant une cuve (1) qui est raccordée par bride au blindage métallique l'installation de commutation et dans laquelle se trouve disposé le système actif (2) du transformateur de tension comportant une électrode à haute tension (4) entourant coaxialement l'enroulement à haute tension, et dans laquelle aboutit une ligne d'alimentation à haute tension (84), un dispositif à résistance (6) relié à l'électrode haute tension (4) étant branché dans le trajet de conduction situé entre la ligne d'alimentation haute tension (24) et l'enroulement haute tension, caractérisé par le fait que le dispositif à résistance (6) s'étend depuis la ligne d'alimentation haute tension (24) jusqu'à l'électrode à haute tension (4) et est constitué par une structure en forme de colonne formée par l'assemblage de plusieurs éléments de résistance de masse (10), dans lequel un disque métallique circulaire (9) présentant des renfoncements (31, 32) de même hauteur ménagés dans ces faces respectives, est inséré respectivement entre deux éléments de résistance de masse (10) voisins, que les renfoncements (31, 32) sont décalés cycliquement dans la direction circonférentielle dans des disques métalliques (9) successifs, que l'on obtient une disposition hélicoïdale des éléments de résistance de masse (10), et que les disques métalliques (9) et les éléments de résistance de masse (10) sont maintenus assemblés au moyen de plateaux de pression (7, 8), qui sont situés aux extrémités de la structure en forme de colonne et dont l'un (7) est fixé à la ligne d'alimentation haute tension (24), tandis que l'autre (8) comporte un évidement (21) dans lequel s'engage un dispositif en forme de fiche mâle (5) de l'électrode haute tension.
2. Transformateur de tension suivant la revendication 1, caractérisé par le fait qu'un plateau de pression (7) comporte un embout fileté (22) qui est reçu dans un taraudage (23) situé dans la ligne d'alimentation à haute tension (24).
3. Transformateur de tension suivant la revendication 1 ou 2, caractérisé par le fait que l'évidement (21) est cylindrique et s'élargit en forme d'entonnoir en direction de l'électrode à haute tension.
4. Transformateur de tension suivant l'une des revendications précédentes, caractérisé par le fait que le disque métallique (9) comporte, de chaque côté et dans des positions diamétralement opposées au renfoncement (31, 32), au moins un autre renfoncement (33, 34) destiné à recevoir une entretoise isolante.
5. Transformateur de tension suivant l'une des revendications précédentes, caractérisé par le fait que le disque métallique (9) possède trois trous de passage (12, 13, 14), qui sont décalés réciproquement de 120° et que traversent les boulons de serrage (11) réalisés en un matériau isolant qui serrent en les repoussant l'un vers l'autre les plateaux de pression (7, 8).
6. Transformateur de tension suivant la revendication 5, caractérisé par le fait que les boulons de serrage (11) sont maintenus dans un plateau de pression (7) par des goupilles (16) qui s'engagent dans des perçages transversaux (17) des boulons de serrage (11).
7. Transformateur de tension suivant la revendica- .tion 5 ou 6, caractérisé par le fait que les boulons de serrage (11) portent, au voisinage de l'autre plateau de pression (8), des douilles filetées (18) sur lesquelles des éçrous (20) sont vissés pour réaliser le serrage.
8. Transformateur de tension suivant l'une des revendications précédentes, caractérisé par le fait que les disques métalliques (9) comportent, sur leur bord, un rebord périphérique.
EP81730049A 1980-05-30 1981-05-14 Transformateur de tension inductif entièrement isolé pour un appareillage de commutation à haute tension à enveloppe métallique Expired EP0041917B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81730049T ATE12437T1 (de) 1980-05-30 1981-05-14 Induktiver spannungswandler fuer eine vollisolierte, metallgekapselte hochspannungsschaltanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8014832U 1980-05-30
DE19808014832U DE8014832U1 (de) 1980-05-30 1980-05-30 Induktiver spannungswandler fuer eine vollisolierte, metallgekapselte hochspannungsschaltanlage

Publications (4)

Publication Number Publication Date
EP0041917A2 EP0041917A2 (fr) 1981-12-16
EP0041917A3 EP0041917A3 (en) 1982-01-20
EP0041917B1 EP0041917B1 (fr) 1985-03-27
EP0041917B2 true EP0041917B2 (fr) 1988-11-09

Family

ID=6715974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81730049A Expired EP0041917B2 (fr) 1980-05-30 1981-05-14 Transformateur de tension inductif entièrement isolé pour un appareillage de commutation à haute tension à enveloppe métallique

Country Status (4)

Country Link
EP (1) EP0041917B2 (fr)
AT (1) ATE12437T1 (fr)
DE (1) DE8014832U1 (fr)
ZA (1) ZA813613B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4338537A1 (de) * 1993-11-11 1995-05-18 Sachsenwerk Ag Induktiver elektrischer Wandler für Mittelspannung
CN104361985B (zh) * 2014-10-31 2017-07-28 平高集团有限公司 一种电压互感器及其引线结构
CN112802657B (zh) * 2021-01-11 2023-06-09 中气电力装备有限公司 一种山地环境用变压器组装式支撑组件

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT131016B (de) * 1930-07-04 1932-12-27 Siemens Ag Anordnung zum Messen hoher Spannungen, insbesondere in Röntgenanlagen.
DE626600C (de) * 1933-03-04 1936-02-28 Guenther Kujath Dipl Ing Messeinrichtung fuer hohe Spannungen
GB1204446A (en) * 1968-03-29 1970-09-09 Muirhead Ltd Formerly Known As Improvements relating to electrical components

Also Published As

Publication number Publication date
EP0041917A3 (en) 1982-01-20
DE8014832U1 (de) 1980-08-28
EP0041917B1 (fr) 1985-03-27
EP0041917A2 (fr) 1981-12-16
ZA813613B (en) 1982-06-30
ATE12437T1 (de) 1985-04-15

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