EP0236974B1 - Kombinierter Hochspannungsstrom- und -spannungswandler - Google Patents

Kombinierter Hochspannungsstrom- und -spannungswandler Download PDF

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Publication number
EP0236974B1
EP0236974B1 EP87103201A EP87103201A EP0236974B1 EP 0236974 B1 EP0236974 B1 EP 0236974B1 EP 87103201 A EP87103201 A EP 87103201A EP 87103201 A EP87103201 A EP 87103201A EP 0236974 B1 EP0236974 B1 EP 0236974B1
Authority
EP
European Patent Office
Prior art keywords
transformer
hood
combined
current transformer
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 - Lifetime
Application number
EP87103201A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0236974A2 (de
EP0236974A3 (en
Inventor
Norbert Dipl.-Ing. Preissinger (Fh)
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.)
Trench Germany GmbH
Original Assignee
MWB Messwandler Bau 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
Priority claimed from DE19863608388 external-priority patent/DE3608388A1/de
Priority claimed from DE19863608390 external-priority patent/DE3608390A1/de
Priority claimed from DE19863608389 external-priority patent/DE3608389A1/de
Application filed by MWB Messwandler Bau AG filed Critical MWB Messwandler Bau AG
Priority to AT87103201T priority Critical patent/ATE76999T1/de
Publication of EP0236974A2 publication Critical patent/EP0236974A2/de
Publication of EP0236974A3 publication Critical patent/EP0236974A3/de
Application granted granted Critical
Publication of EP0236974B1 publication Critical patent/EP0236974B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F38/34—Combined voltage and current transformers
    • H01F38/36—Constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Definitions

  • the present invention relates to a combined high-voltage current and voltage converter in head design according to the preamble of claim 1.
  • the feed-through conductor forming the primary conductor of the current transformer is arranged horizontally and is passed laterally through the hood forming the head of the current transformer.
  • at least one of the two bushings is designed to be electrically insulating.
  • the hood is usually divided lengthways, that is to say it has two shells (cf. DE-A-27 28 191).
  • Such a design of a hood thus has not only three openings, which must be tightly sealed during assembly for later filling with insulating liquid or with pressurized insulating gas, but also the longitudinal dividing line to be sealed.
  • the object of the present invention is to provide a combined high-voltage current and voltage converter at the beginning Form mentioned type so that a simple manufacture of the head housing and a good seal is made possible with the least possible sealable bushings within the head housing.
  • both the primary conductor of the current transformer and the secondary system of the current and active parts of the voltage transformer should be easy to install.
  • all lateral openings in the hood are eliminated.
  • the hood is completely relieved of the weight of the secondary system of the current transformer and only has to bear the lower weight of the voltage transformer.
  • the hood can therefore be made of much thinner material, possibly even in one piece using the deep-drawing process, and thus can be manufactured much more cheaply and easily.
  • all current transformer parts can also be preassembled on the end plate and the voltage transformer in the hood, and the units preassembled in this way can be placed on the insulating column (support) or on the end plate and fastened there.
  • a controlled foil feedthrough in the through opening of the secondary system can also be dispensed with. So you get by with a uniform insulating medium, especially with an inert insulating gas, such as sulfur hexafluoride, or insulating oil.
  • a head-mounted high-voltage current transformer in particular under the usual excess pressure of an inert insulating gas, such as sulfur hexafluoride, which essentially consists of a column made of insulating material (supports), such as porcelain, epoxy resin or a composite insulator made of a GRP tube with cast-on silicone fins , consists of a base part 3 supporting the insulating column 2 and the head part 4 containing the active parts of the current and voltage converter.
  • an outlet pipe 5 is arranged coaxially to the latter, in which the secondary outlet pipes 6 run and are guided to the secondary terminals in the foot part 3.
  • a potential control device in particular potential control winding, can be provided in a manner known per se.
  • an end plate 8 is insulated, ie oil or gas-tight. It has a collar 9 projecting downwards, which engages over the insulating column 2 from the outside.
  • An inner support edge 10 lies on the end face 11 of the insulating column 2 with the interposition of a seal 12.
  • the discharge pipe 5 is inserted in a secondary system 16, which preferably consists of a plurality of toroidal cores 13 with associated secondary windings and a cast resin sheathing 15 forming a ring 14.
  • the latter is exclusively attached to the end plate 8 by means of insulating supports 17. These supports 17 are advantageously arranged at an angle to the outside and are expediently attached centrally to the discharge pipe 5.
  • the primary conductor 18 is exclusively attached to the end plate 8. This is U-shaped, the base 19 of which passes through the ring 14 or the cores 13 at least approximately centrally, the one leg 20 being fastened in this by means of a connecting section 22 which is guided through the bore 100 of the end plate 8 so as to be insulating-tight.
  • An outer flange 23 attached to the leg 20 serves as a support. This leg can be contacted from the outside, ie from below the end plate 8.
  • the connecting section 22 is secured by an insulating sleeve 47 and an insulating ring 48, which may consist of one piece with the insulating sleeve 47, and is insulated and insulated.
  • the other leg 21 is attached from the inside by means of the outer flange 23 on the inside 101 of the end plate 8, in particular screwed on. There are no holes through to the outside, so that no seals are required.
  • the connection is made via an externally attached connection 106, so that the entire head 4 is at this potential connected there. It is therefore a non-switchable primary conductor 18.
  • the end plate 8 is designed such that it projects laterally on all sides of all active parts, that is to say the secondary system 16 and the primary conductor 18.
  • it has a tub or plate shape.
  • a hood 24 designed as a head housing is placed over these aforementioned parts from above.
  • a flange 27 is provided with which the hood 24 can be screwed tightly onto the end plate 8 by means of screw connections 28.
  • the hood 24 can consist of a tube section 29 and a hood-shaped or pot-shaped cover 30, which are sealed at the joint 31 in an insulating-tight manner, are soldered or welded or screwed, for example flanged, in the case of a metal design, and are, for example, in the case of a GRP (glass fiber reinforced plastic) design the joint 31 are overlapped.
  • the hood 24 can also consist of a single drawn or pressed part or molded part.
  • the secondary discharges are led out at the periphery 32 at a reinforced diversion point 33, into which the diversion pipe 5 is inserted.
  • the ring 14 is preferably metallized on the outside, for example with spray galvanizing. As usual, this metal covering is connected to earth potential.
  • At least three supports 17 are provided.
  • the supports 17 for the ring 14 can also be integrally formed on the ring 14, that is to say they can be cast in one piece from casting resin. But they can also be molded with suitable approaches or releasably connected to the ring 14.
  • the arrangement of an individual support 17 on the ring 14 can be such that a threaded part 43 designed as a threaded sleeve or threaded bolt is molded into the cast resin sheathing 15 and the supports 17 can be screwed to the latter by means of a counter-threaded part 44 molded therein (FIG. 2).
  • connection between the diversion point 33 and the diversion pipe 5 is designed mechanically as a longitudinally displaceable plug connection.
  • the upper end of the diversion tube 5 is coaxially surrounded and held resiliently in the manner of a sliding fit by one or more contact springs 45, for example as ring contact springs arranged in the ring around the diversion tube 5, preferably as a multiply slotted collar.
  • Each abutment 102 expediently has a support plate 103 for each support 17, the support surface 35 of which is preferably arranged perpendicular to the longitudinal axis L of the associated supports 17.
  • the support plates 103 are provided with a bore 104 through which a screw shaft 37 of a fastening screw 38 can be pushed through from below and is screwed to a threaded part of the support 17 designed as a threaded bushing 39.
  • the support plates 103 can be one leg of an angle rail, the other leg of which is attached to the end plate 8, for example by screws from the inside.
  • a support plate 103 is advantageously provided on each side of a prism 105, this prism 105 being integrally formed on or attached to the end plate 8.
  • This type of support attachment within the space of the hood 24 avoids that 8 holes have to be provided in the end plate and sealed in an insulating-tight manner.
  • a voltage converter 200 is provided over the secondary system 16 or over its cast resin sheathing 15. It is arranged within the one- or in particular two-part hood 24 and fastened in it to at least two fastening tabs 201 provided there or to a partial or an annular flange.
  • the cover 30 is preferably designed as a dome and connected to a lower cylindrical section, for example the pipe section 29, in an insulating-tight manner, in particular screwed.
  • a plug device 202 is attached at the bottom of the voltage converter 200, preferably screwed on or in particular molded onto the cast resin sheathing 203 of the high and low voltage windings 200.1, 200.2. This is preferably a multiple plug device for the secondary rejects of the voltage converter 200, so that a voltage converter 200 with a plurality of connections is thus provided.
  • a plug device counterpart 203 is rigidly fastened in the lower part of the hood 24 or the head 4, for example screwed to it.
  • the plug device counterpart 203 is attached to the secondary system 16 of the current transformer at the top, for example screwed on or molded on.
  • open outlet lines which are molded on the outside, in particular along the cast resin sheathing 15 or cheaper, or molded into it by means of cast resin, and are led into the discharge pipe 5. In the latter they are led to the clipboard in foot 3 of the converter.
  • the plug connection 202, 204 is designed such that the individual devices 202, 204 are axially displaceable relative to one another in the assembled state, but remain securely connected.
  • the arrangement can be such that the assembly of the plug device parts 202, 204 takes place directly and automatically or indirectly via intermediate connecting elements when the hood 24 is put on.
  • the division of the hood 24 is expediently arranged in an area 205 between the feedthrough conductor, that is to say the base 19 of the primary conductor 18 and the leg 206 of the magnetic core 207 passing through the windings 200.1 and 200.2 of the voltage converter 200.
  • this leg 206 is below and the non-winding Leg 208 arranged above.
  • the magnetic core 207 or 207.1 and the beginning of the internal high-voltage winding 200.1 are at high-voltage potential.
  • the dome 30 is adapted to the dimensions of the voltage converter 200 and it can usually be at least smaller in diameter around it than the remaining section of the hood 24. This possibility arises when the magnetic core 207 is designed as a frame core according to FIG. 4.
  • the magnetic core can advantageously be designed as a jacket core 207.1. This is preferably arranged in the horizontal plane. This results in a lower design and the diameter of the dome 30 must at least not be greater than that of the cylindrical section 29.
  • the magnetic core 207 or 207.1 is attached directly or indirectly to the transducer head 4 via angular or U-shaped sections 211.
  • the plug connection can be brought together in the direction of rotation without difficulty in an exact angular position, the plug devices 202 and 204 and / or on the hood 24 or on the dome 30 and on the end plate 8 or on the pipe section 29 and / or on the cast resin casings 15 and 203 coding elements 209 and counterparts 210, for example in the form of tongue and groove or pins 209.1 and bores 210.1 or the like. In this way, incorrect connection of the voltage converter 200 can be avoided in principle.
  • the primary conductor 18 of the current transformer 16, 18 can consist of two or more parts consist, for example, of an angle and one leg or of a base and two legs. At an angle, the one angle leg forms the base 19 to which the leg 20 or 21 is attached.
  • This type of design allows easy installation, especially with small core or ring inner diameters.
  • the legs 20, 21 are attached at an obtuse angle to a right angle at the ends of the rod-shaped base 19.
  • the legs 20, 21 can be designed as bolts.
  • the isolation of the leg or legs 20 and / or 21 is advantageously carried out via an insulating sleeve and a ring, which is preferably a flange of the insulating sleeve, which are attached tightly in the end plate 8, for example by pouring or by means of ring seals or the like.
  • the ring or flange is screwed tightly on the one hand to the outer flange 23 of the legs 20, 21 and on the other hand to the end plate 8.
  • the primary conductor 18 is designed as a coaxial double conductor in which two U-shaped conductors which are insulated from one another are provided.
  • One preferably consists of an outer conductor 50 and the other of an inner conductor 51. These are separated and fixed in position by suitable insulation paths which are at least partially separated from one another by a solid dielectric 52, such as cast resin.
  • the dielectric 52 is provided at least in the region of the connection sections 22 and thus seals at the same time.
  • the outer conductor 50 of one leg 20 is arranged insulated from the end plate 8 by an insulating bush and the outer conductor 50 of the other leg 21 is conductively connected to the end plate 8, for example directly attached therein without insulation.
  • the outer conductors 50 of the legs 20, 21 have an outer flange 23.
  • the inner conductors 51 of the legs 20, 21 are guided to the outside in an insulated manner, and connection contacts 53, for example by means of a clamp 54, can be pivoted accordingly. The same can be provided on the insulated outer conductor 50 of the leg 20.
  • This configuration of the primary conductor 18 as a double conductor makes it possible to use the two conductors separately or to connect them in series or in parallel. It is therefore possible to switch over in a ratio of 1: 2 or, in the case of parallel connection, the primary conductor can be used for a higher current load.
  • each of the two coaxial conductors can also carry a separate measuring current.
  • the parallel connection takes place by interconnecting the inner conductor 50 and the outer conductor 51 of the leg 20 and the leg 21.
  • connection contacts 53 to the left outer conductor 50, by electrically connecting the outer flange 23 to the electrically conductive end plate 8, by a further electrical connection of the end plate 8 via a further connection contact 53 to the left inner conductor 51, with the right one Connection section 22 is further contacted with the right terminal contact 53.
  • Clamp clamps 54 can also be used to connect the base 19 of the primary conductor 18 to the legs 20, 21. These can be made from the tubular or solid material of the legs 20, 21 or from the base 19, both in the outer conductors 50 and in the Inner conductors 51, be made. This can be done by appropriate shaping and / or machining. The conductor part 55 to be clamped can be reduced in diameter.
  • the outer conductor 50 of the legs 20, 21 has a bore in the area 56 of the inner conductor 51 of the base 19.
  • connection of the outer conductors 50 from the base 19 to the legs 20, 21 takes place in each case via a flange 59 which is attached to the ends 19 of the outer conductor 50 on the base 19 and with which the ends 60 of the outer conductors 50 of the legs protrude somewhat inside the head housing 24 20, 21 are screwed.
  • Shields 212 are advantageously attached to all inner surfaces of the jacket core 207. These can also form a common framework. They are advantageously rounded at the end 213 which points downward to the ring 14 of the current transformer 16, 18, and are rounded downwards.
  • the sheath core 207 in the direction of the feed-through conductor 19 of the current transformer primary conductor 18.
  • the feed-through conductor 19 can penetrate the entire head 4 horizontally, protruding from the hood 24 on both sides and being electrically insulated from it at least on one side. But it can also have the U-shape described. If necessary, it can also consist of two parallel strands, so that it can be switched. One of the two strands is then attached to each leg in an electrically insulated manner from the end plate.
  • the use of the current transformer part with a switchable primary winding of the combined transformer according to the invention is particularly advantageous if the voltage transformer part is disconnected via the plug device 202, 204 and this transformer is then operated as a pure current transformer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
EP87103201A 1986-03-13 1987-03-06 Kombinierter Hochspannungsstrom- und -spannungswandler Expired - Lifetime EP0236974B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87103201T ATE76999T1 (de) 1986-03-13 1987-03-06 Kombinierter hochspannungsstrom- und spannungswandler.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE19863608388 DE3608388A1 (de) 1986-03-13 1986-03-13 Kombinierter hochspannungsstrom- und -spannungswandler
DE3608390 1986-03-13
DE3608388 1986-03-13
DE19863608390 DE3608390A1 (de) 1986-03-13 1986-03-13 Kombinierter hochspannungsstrom- und -spannungswandler
DE19863608389 DE3608389A1 (de) 1986-03-13 1986-03-13 Kombinierter hochspannungsstrom- und -spannungswandler
DE3608389 1986-03-13

Publications (3)

Publication Number Publication Date
EP0236974A2 EP0236974A2 (de) 1987-09-16
EP0236974A3 EP0236974A3 (en) 1988-07-20
EP0236974B1 true EP0236974B1 (de) 1992-06-03

Family

ID=27194151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103201A Expired - Lifetime EP0236974B1 (de) 1986-03-13 1987-03-06 Kombinierter Hochspannungsstrom- und -spannungswandler

Country Status (11)

Country Link
US (1) US4731599A (xx)
EP (1) EP0236974B1 (xx)
CN (1) CN1010721B (xx)
AU (1) AU593891B2 (xx)
BR (1) BR8700893A (xx)
CA (1) CA1278350C (xx)
DE (1) DE3779451D1 (xx)
HU (1) HU201420B (xx)
IN (1) IN166063B (xx)
SU (1) SU1662362A3 (xx)
TR (1) TR22966A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232665A1 (de) 2022-06-03 2023-12-07 Siemens Energy Global GmbH & Co. KG Beschichtetes aktives bauteil in einem hochspannungsgerät und verfahren zur erhöhung der dielektrischen festigkeit

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
DE3737989C1 (de) * 1987-11-09 1989-05-11 Messwandler Bau Ag Hochspannungsspannungswandler
CH682190A5 (xx) * 1991-04-22 1993-07-30 Asea Brown Boveri
IT1279382B1 (it) * 1992-03-04 1997-12-10 Mario Antonio Taddei Trasformazione di corrente per alta tensione, a produzione per magazzino, mediante automazione del suo isolamento.
DE4240118C1 (de) * 1992-11-30 1994-03-31 Ritz Messwandler Kg Durchführung, insbesondere für hohe Spannungen mit spezieller Elektrodenhalterung
DE4243207A1 (de) * 1992-12-19 1994-06-23 Abb Patent Gmbh Spannungswandler
IT1275290B (it) * 1995-06-01 1997-08-05 Passoni E Villa Fabbrica Isola Trasformatore per misura di corrente in reti elettriche ad alta tensione
DE59812131D1 (de) * 1997-09-16 2004-11-18 Kg Ritz Messwandler Gmbh & Co Wandleranordnung mit trenneinrichtung
US7517235B2 (en) * 2006-12-28 2009-04-14 General Electric Company Press fit connection for mounting electrical plug-in outlet insulator to a busway aluminum housing
US8749226B2 (en) * 2010-05-17 2014-06-10 Abb Technology Ag Line-powered instrument transformer
CN102479610A (zh) * 2010-11-26 2012-05-30 江苏思源赫兹互感器有限公司 一种组合式电子互感器
US8587399B2 (en) 2012-02-06 2013-11-19 Continental Control Systems, Llc Split-core current transformer
CN102779637A (zh) * 2012-08-15 2012-11-14 保定市久鼎电力设备有限责任公司 一种组合电力互感器
EP2800113B1 (en) * 2013-04-29 2016-03-16 ABB Technology AG High voltage dry instrument transformer
CN105588976B (zh) * 2015-12-23 2018-07-03 国网重庆市电力公司电力科学研究院 电压电流组合式传感器及电压电流检测系统
PL3559963T3 (pl) 2016-12-21 2022-02-07 Abb Power Grids Switzerland Ag Zespolony transformator miernikowy prądowy i napięciowy do zastosowań wysokiego napięcia
EP3474024A1 (de) * 2017-10-19 2019-04-24 RITZ Instrument Transformers GmbH Stromwandler mit fluid- oder ölpapierisolierung für hochspannung
DE102019214368B4 (de) * 2019-09-20 2023-02-02 Siemens Energy Global GmbH & Co. KG Messwandleranordnung mit einem Spannungswandler und einem Stromwandler
EP4060696A1 (en) * 2021-03-17 2022-09-21 Hitachi Energy Switzerland AG High-voltage column current transformer

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DE1563272B1 (de) * 1966-11-29 1970-07-02 Licentia Gmbh Stuetzerkopfstromwandler
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DE2242010C3 (de) * 1972-08-23 1980-02-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Kleinstromwandler
DE2325446B2 (de) * 1973-05-17 1977-03-31 Siemens AG, 1000 Berlin und 8000 München Spannungswandler fuer eine mehrere leiter fuehrende hochspannungsschaltanlage mit einer metallkapselung
SE399985B (sv) * 1976-07-02 1978-03-06 Asea Ab Stromtransformator
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JPS55125616A (en) * 1979-03-22 1980-09-27 Mitsubishi Electric Corp Voltage and current transformer for gas-insulation meter
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DE3540547A1 (de) * 1985-11-15 1987-05-21 Messwandler Bau Ag Hochspannungsstromwandler und verfahren zur herstellung eines derartigen hochspannungsstromwandlers
DE3737989C1 (de) * 1987-11-09 1989-05-11 Messwandler Bau Ag Hochspannungsspannungswandler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023232665A1 (de) 2022-06-03 2023-12-07 Siemens Energy Global GmbH & Co. KG Beschichtetes aktives bauteil in einem hochspannungsgerät und verfahren zur erhöhung der dielektrischen festigkeit
DE102022205691A1 (de) 2022-06-03 2023-12-14 Siemens Energy Global GmbH & Co. KG Beschichtetes aktives Bauteil in einem Hochspannungsgerät und Verfahren zur Erhöhung der dielektrischen Festigkeit

Also Published As

Publication number Publication date
IN166063B (xx) 1990-03-10
AU593891B2 (en) 1990-02-22
EP0236974A2 (de) 1987-09-16
TR22966A (tr) 1988-12-13
HU201420B (en) 1990-10-28
EP0236974A3 (en) 1988-07-20
US4731599A (en) 1988-03-15
CN1010721B (zh) 1990-12-05
CN87101790A (zh) 1987-09-30
DE3779451D1 (de) 1992-07-09
BR8700893A (pt) 1987-12-22
SU1662362A3 (ru) 1991-07-07
HUT44356A (en) 1988-02-29
CA1278350C (en) 1990-12-27
AU6994187A (en) 1987-09-17

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