EP0167896A1 - Bobinage de bobine à plateaux pour transformateurs - Google Patents

Bobinage de bobine à plateaux pour transformateurs Download PDF

Info

Publication number: EP0167896A1
Authority: EP; European Patent Office
Prior art keywords: disc; winding; coils; disc coil; voltage
Prior art date: 1984-07-02
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.): Granted

Application number

EP85107558A

Other languages

German (de)

English (en)

Other versions

EP0167896B1 (fr

Inventor

Wolfgang Dr. Dipl.-Ing. Knorr

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

Transformatoren Union AG

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.)

1984-07-02

Filing date

1985-06-19

Publication date

1986-01-15

1985-06-19 Application filed by Transformatoren Union AG, Siemens AG filed Critical Transformatoren Union AG

1985-06-19 Priority to AT85107558T priority Critical patent/ATE31125T1/de

1986-01-15 Publication of EP0167896A1 publication Critical patent/EP0167896A1/fr

1987-11-25 Application granted granted Critical

1987-11-25 Publication of EP0167896B1 publication Critical patent/EP0167896B1/fr

Status Expired legal-status Critical Current

Links

238000004804 winding Methods 0.000 title claims abstract description 60
239000004020 conductor Substances 0.000 claims abstract description 11
238000001816 cooling Methods 0.000 claims abstract description 9
238000000034 method Methods 0.000 abstract description 3
238000009413 insulation Methods 0.000 description 12
230000015556 catabolic process Effects 0.000 description 6
230000007423 decrease Effects 0.000 description 2
238000009826 distribution Methods 0.000 description 2
239000003795 chemical substances by application Substances 0.000 description 1
239000002826 coolant Substances 0.000 description 1
230000001186 cumulative effect Effects 0.000 description 1
238000011161 development Methods 0.000 description 1
230000018109 developmental process Effects 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
229910000679 solder Inorganic materials 0.000 description 1
238000005728 strengthening Methods 0.000 description 1

Images

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/343—Preventing or reducing surge voltages; oscillations
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils

Definitions

the invention relates to a disk coil winding for transformers comprising one or more winding conductors which alternate left and right-hand spirals and with radial cooling and insulating channels arranged between the individual disk coils.
Simple disc coils have a non-linear surge voltage distribution in the axial direction along the individual coils, so that breakdowns can occur between two adjacent coils when subjected to voltage surges. A number of measures are already known for controlling these loads resulting from voltage surges.
the disc coils are wound from two winding conductors fed simultaneously and spatially parallel to one another during the winding process. Subsequently, the winding conductor sections lying within the individual disk coils are electrically connected in series, for example by solder connections, so that the same current flows through each disk coil twice, a voltage lying within this disk coil between adjacent turns which is equal to the product of the turn voltage and the total number of turns each Disc spool is.
the turns are provided in the order in which they are are traversed by the current, with turn indices, the voltage against earth potential drops correspondingly with increasing turn indices.
the winding indices can therefore also be viewed as a multiple of the winding voltage compared to the winding input.
the voltage drop in a single pass through a disc coil is called the branch voltage that occurs along the conductor. Accordingly, in a single coil winding between adjacent turns there is a single branch voltage and in a double coil winding intertwined between the turns there is twice the branch voltage.
the single-coil circuit is therefore preferred for higher surge voltage stresses.
the known interwoven disc coil windings also have their disadvantages. These are due to the increased winding stress, since instead of the single winding voltage which occurs in double coils which are not interwoven, the one or more branch voltage occurs between adjacent turns. This branch voltage reaches a multiple of the linearly calculated value during impact processes. As a result, pre-discharges in or between the disc coils are not excluded.
the winding insulation is therefore reinforced in interwoven coils compared to simple coils so that no winding breakdown occurs, but preliminary discharges in the gussets between the edges of adjacent turns are often accepted. As a result, part of the longitudinal capacity gained by wrapping one another is lost again.
additional insulation which comprise at least one highly stressed edge of these turns and is angular Winding capacity between windings free of additional insulation is increased compared to the winding capacity of windings equipped with additional insulation.
more than two, possibly all, windings of the coils located at the winding input can be made with additional insulation, the thickness of which decreases to zero on the coils further away from the input.
Another possibility for strengthening the insulation between these edge turns is to increase the distance between these edge turns from one another by arranging an axial cooling channel.
the invention is therefore based on the object for disc coil windings of transformers To create order, which has a further improved security against surge voltage breakdowns and still requires such a low insulation job that the heat loss occurring in normal operation can be optimally dissipated J nd a minimization of the cross-sectional area required for the winding is achieved.
the disc coils when applied to disc coil windings with graded longitudinal capacitance, are also split in the region of jumps of the longitudinal capacitance of the winding into two parts axially one above the other, each forming an additional insulating channel.
Advantageous refinements of the invention consist in that the two parts which form the same disk coil are galvanically connected to one another at the winding lying on the inner jacket and on the outer jacket of the winding, and that at least in the disk coils having an additional insulating channel, the first and the second turn is more insulated from each other than the other turns.
the winding arrangement according to the invention is very advantageous because longitudinal flashovers favored by sliding discharges are reliably avoided by the electrically unloaded additional insulating channels.
Disc coil windings 41 and 42 are supported on an insulating and support cylinder 43 via axially parallel cooling channel strips 44.
Axial cooling channels lying between the axially parallel cooling channel strips 44 are connected to radial cooling and insulating channels 46 between the disk coils 41 and 42.
the disk coils 41 and 42 are constructed from two winding conductors wound at the same time, each of which is connected to one another in a crossed manner on the inside diameter of the disk coils 41 and 42, and the ends of which on the outside diameter of the disk coils 41 and 42 represent either a return connection in a disk coil pair or the connection to the adjacent disk coil pair.
the top disk coil 41 is connected to a high voltage input 45 and the bottom disk coil 42 is either connected to ground potential and / or a star point or in a manner not shown to produce a delta connection to the high voltage input 45 of the next phase.
Each of the disk coils 41 and 42 is split into two parts which are identical in terms of the winding in the axial direction and form an additional insulating channel 47 between them.
the two parts, each forming a disc coil 41 and 42, are wound in the exemplary embodiment from winding conductors having the same cross section. Due to the winding design of the parts belonging to the same disk coil 41 or 42, there is no potential difference in the additional insulating channel 47 in the axial direction.
the coolant and insulating agent which also fills the additional insulating channels 47 is therefore not subjected to electrical stress in these channels during normal operation in the axial direction.

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Coils Of Transformers For General Uses (AREA)
Regulation Of General Use Transformers (AREA)
Ignition Installations For Internal Combustion Engines (AREA)

EP85107558A 1984-07-02 1985-06-19 Bobinage de bobine à plateaux pour transformateurs Expired EP0167896B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT85107558T ATE31125T1 (de)	1984-07-02	1985-06-19	Scheibenspulenwicklung fuer transformatoren.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3424285		1984-07-02
DE3424285		1984-07-02

Publications (2)

Publication Number	Publication Date
EP0167896A1 true EP0167896A1 (fr)	1986-01-15
EP0167896B1 EP0167896B1 (fr)	1987-11-25

Family

ID=6239624

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP85107558A Expired EP0167896B1 (fr)	1984-07-02	1985-06-19	Bobinage de bobine à plateaux pour transformateurs

Country Status (4)

Country	Link
EP (1)	EP0167896B1 (fr)
AT (1)	ATE31125T1 (fr)
BR (1)	BR8503151A (fr)
DE (1)	DE3561088D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT397889B (de) *	1991-04-05	1994-07-25	Asta Eisen Und Metallwarenerze	Drilleiter
AT399962B (de) *	1992-09-16	1995-08-25	Asta Eisen Und Metallwarenerze	Drilleiter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE975856C (de) *	1945-01-04	1962-10-31	English Electric Co Ltd	Wicklungsanordnung mit Scheibenwicklungen, insbesondere fuer Transformatoren
DE1225291B (de) *	1962-09-05	1966-09-22	Siemens Ag	Hochspannungsroehrenwicklung aus Scheibenspulen
DE3105317A1 (de) *	1981-02-13	1982-09-02	Transformatoren Union Ag, 7000 Stuttgart	Scheibenspulenwicklung aus ineinandergewickelten einzel- oder doppelspulen

1985
- 1985-06-19 AT AT85107558T patent/ATE31125T1/de not_active IP Right Cessation
- 1985-06-19 DE DE8585107558T patent/DE3561088D1/de not_active Expired
- 1985-06-19 EP EP85107558A patent/EP0167896B1/fr not_active Expired
- 1985-07-01 BR BR8503151A patent/BR8503151A/pt not_active IP Right Cessation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE975856C (de) *	1945-01-04	1962-10-31	English Electric Co Ltd	Wicklungsanordnung mit Scheibenwicklungen, insbesondere fuer Transformatoren
DE1225291B (de) *	1962-09-05	1966-09-22	Siemens Ag	Hochspannungsroehrenwicklung aus Scheibenspulen
DE3105317A1 (de) *	1981-02-13	1982-09-02	Transformatoren Union Ag, 7000 Stuttgart	Scheibenspulenwicklung aus ineinandergewickelten einzel- oder doppelspulen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT397889B (de) *	1991-04-05	1994-07-25	Asta Eisen Und Metallwarenerze	Drilleiter
US5477007A (en) *	1991-04-05	1995-12-19	Asta Elektrodraht Gmbh	Twisted conductor
AT399962B (de) *	1992-09-16	1995-08-25	Asta Eisen Und Metallwarenerze	Drilleiter

Also Published As

Publication number	Publication date
ATE31125T1 (de)	1987-12-15
DE3561088D1 (en)	1988-01-07
EP0167896B1 (fr)	1987-11-25
BR8503151A (pt)	1986-03-18

Legal Events

Date	Code	Title	Description
1985-11-16	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1986-01-15	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB IT LI NL SE
1986-04-09	17P	Request for examination filed	Effective date: 19860205
1986-12-30	17Q	First examination report despatched	Effective date: 19861112
1987-01-07	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: TRANSFORMATOREN UNION AKTIENGESELLSCHAFT
1987-10-10	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1987-10-21	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: SIEMENS AKTIENGESELLSCHAFT BERLIN UND MUENCHEN
1987-11-25	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI NL SE
1987-11-25	REF	Corresponds to:	Ref document number: 31125 Country of ref document: AT Date of ref document: 19871215 Kind code of ref document: T
1988-01-07	REF	Corresponds to:	Ref document number: 3561088 Country of ref document: DE Date of ref document: 19880107
1988-01-22	ET	Fr: translation filed
1988-02-24	ITF	It: translation for a ep patent filed
1988-03-23	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1988-09-21	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1988-09-21	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1988-11-09	26N	No opposition filed
1991-06-30	ITTA	It: last paid annual fee
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 85107558.0
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
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2003-12-31	BERE	Be: lapsed	Owner name: SIEMENS A.G. BERLIN UND MUNCHEN Effective date*: 20030630
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2005-08-02	EUG	Se: european patent has lapsed

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