EP0315835B1 - Hochspannungsspannungswandler - Google Patents
Hochspannungsspannungswandler Download PDFInfo
- Publication number
- EP0315835B1 EP0315835B1 EP88117960A EP88117960A EP0315835B1 EP 0315835 B1 EP0315835 B1 EP 0315835B1 EP 88117960 A EP88117960 A EP 88117960A EP 88117960 A EP88117960 A EP 88117960A EP 0315835 B1 EP0315835 B1 EP 0315835B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- winding
- low
- electrode
- metal screen
- 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
Links
- 238000004804 winding Methods 0.000 claims description 50
- 239000002184 metal Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 238000000576 coating method Methods 0.000 claims description 10
- 239000011888 foil Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims 6
- 239000011810 insulating material Substances 0.000 claims 4
- 238000010276 construction Methods 0.000 claims 2
- 238000009413 insulation Methods 0.000 description 6
- 230000001052 transient effect Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
-
- 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 present invention relates to a high-voltage voltage converter, in particular a combined high-voltage current and voltage converter in a head design, according to the preambles of claims 1 and 8.
- Such high-voltage converters are known per se.
- it is customary to mount the active parts of the converter consisting of core, high and low voltage winding on an insulating column and to surround them with a head housing.
- the insulating column is attached to a foot section that supports the terminal box with the terminal board for the converter's rejects.
- the secondary leads from the converter head housing to the terminal board are therefore relatively long. This applies in particular to combined high-voltage current and voltage transformers in the design according to the own DE-A-36 08 390.9, in which the voltage transformer is arranged above the current transformer.
- the present invention ensures that a very large capacitance is formed between the metal shield of the high voltage winding and the lead electrode of the voltage converter.
- the lead electrode is electrically connected to the outer shield electrode in the shortest possible way and therefore with very little inductance. This reliably prevents the metal shield of the high-voltage winding from rising to impermissibly high values and prevents impermissibly high transient overvoltages from being coupled into the low-voltage winding.
- a combined high-voltage current and voltage converter is shown. It consists of a base part 1 with a terminal box 3 containing a terminal board 2. On the base part 1, a support insulator 4 is arranged tightly and firmly, which carries a metal end plate 5 at the top. On the latter is a U-shaped primary conductor 6 with the legs 7, 8 and the base 9 attached, one leg 8 is electrically conductively connected to the end plate 5 and the other leg 7 is brought out in an electrically insulating manner and can be contacted from the outside.
- the base 9 of the primary conductor 6 is surrounded concentrically by a secondary winding 10 with a plurality of cores.
- the primary conductor 6 and secondary winding 10 form a high-voltage current transformer, the secondary leads of which are led to the terminal board 2.
- the connections 11 of the legs 7, 8 and thus the end plate 5 are at high voltage potential.
- a high-voltage voltage converter 12 is arranged above the high-voltage current transformer 6, 10. It is electrically connected, for example, to a connector 13 with the former, the outlets of the voltage converter 12 being arranged in the connector 13 and then - like the secondary outlets of the current converter 6, 10 - being guided to the terminal board 2.
- the voltage converter 12 consists in a known manner of an iron core 15 made of magnetizable material.
- the high-voltage winding 16 is applied around its one leg as a cylinder, step or trapezoidal winding. This is concentrically surrounded by a low-voltage winding 17.
- These active parts of the entire voltage converter 12 are surrounded concentrically by an annular or cylindrical shielding electrode 18 which is at ground potential.
- a pot-shaped one- or multi-part housing 19 is tightly and firmly attached, which surrounds both transducers 6, 10 and 12 together and is at high voltage potential.
- FIG. 2 shows a section of the voltage converter of a combined high-voltage current and voltage converter in a head design according to FIG. 1.
- this voltage converter can also be used without being combined with a current converter.
- the last turn or turn position of the two-stage high-voltage winding 16 surrounding the iron core is provided with a slotted metal screen 20 which extends over its winding length.
- the latter consists of a layer of highly electrically conductive material, for example copper, silver or zinc, or of a metal covering in the form of a metal foil or a metal cylinder.
- the metal screen 20 is slotted in a manner known per se in the direction of the longitudinal axis W of the winding in order to prevent the occurrence of short-circuit currents.
- a lead 21 is electrically connected to the metal screen 20 and leads to the terminal X for the high-voltage winding 16 in the terminal board 2.
- a concentrically surrounding discharge electrode 22 which forms a large capacitance with the metal screen 20.
- the space provided by the distance A is partially or completely filled with insulating tapes or foils, these being impregnated with the insulating gas or a liquid insulating medium of the present gas- or oil-insulated combined high-voltage current and voltage converter. It is sufficient to attach only a few insulation layers, for example 4 to 6 insulation layers with an insulation tape or insulation film thickness of 40 to 80 ⁇ , which results in a total distance A of 160 to 360 ⁇ . However, several insulating layers up to a maximum distance A of approximately 5 mm can also be provided.
- the lead-off electrode 22 consists of an electrically conductive layer, in particular a metal layer or a metallic cylinder or a metal foil or steps thereof. When using metallic cylinder or metal foil electrodes, these can be glued and / or bandaged, for example by means of an insulating bandage winding.
- the coaxial low-voltage winding 17 is arranged above the discharge electrode 22 at a relatively large distance B, which is primarily determined by the necessary fastening and support elements 24. This is provided with a grounded metallic shield 25, which preferably surrounds the low-voltage winding 17 on all sides, but whose cylindrical parts are also slotted in the direction of the longitudinal axis W of the low-voltage winding 17 and in the circumferential direction in order to prevent short-circuit currents.
- the shield 25 of the low-voltage winding 17 is electrically conductively connected to the shielding electrode 18, which is connected to earth potential, via a, preferably a plurality of connecting brackets 26 distributed over the circumference, with little inductance.
- the discharge electrode 22 is also connected to the shielding electrode 18 via at least one, but preferably via a plurality of short, as wide as possible connecting lines 27 distributed around the circumference.
- the connection should be as inductive as possible, so it must be as short as possible.
- the secondary outlets 28, 29 of the low-voltage winding 17 are like the outlet 21 for the metal screen 20 led to the terminal board 2. This can be done together while maintaining an insulation level of 3 kV within the discharge pipe.
- the risk of breakdowns in the case of transient, high-frequency processes as a result of coupling in to high potential to the terminals in the terminal box 3 is effectively excluded by the measures according to the invention.
- FIG. 3 which shows a modification of the high-voltage voltage converter according to FIG. 2, the same parts are identified with the same reference numbers as in FIG. 2.
- the metal shield 20 of the high-voltage winding 16 is electrically conductively contacted by means of electrically conductive connection elements 20 b distributed over the circumference of the high-voltage winding 16 with at least one further metallic coating 20 a on the support body 30 of the low-voltage winding 17 and by means of the lead 21 connected to the terminal X for the high-voltage winding 16. Details can be found in particular in FIGS. 4 and 5.
- the electrical insulation between the metallic coating 20 a or between the metallic coatings 20 a and the discharge electrode (s) 22 a preferably corresponds to the embodiment as was described in more detail in FIG. 2. Even in the embodiment According to FIG. 3, the lead electrode or lead electrodes 22 a are connected in an electrically conductive manner to the shielding electrode 18 via one or more connecting leads 27 a in the shortest way, that is to say with little inductance.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
- Transformers For Measuring Instruments (AREA)
- Coils Or Transformers For Communication (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88117960T ATE85725T1 (de) | 1987-11-09 | 1988-10-28 | Hochspannungsspannungswandler. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3737989A DE3737989C1 (de) | 1987-11-09 | 1987-11-09 | Hochspannungsspannungswandler |
DE3737989 | 1987-11-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0315835A1 EP0315835A1 (de) | 1989-05-17 |
EP0315835B1 true EP0315835B1 (de) | 1993-02-10 |
Family
ID=6340108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88117960A Expired - Lifetime EP0315835B1 (de) | 1987-11-09 | 1988-10-28 | Hochspannungsspannungswandler |
Country Status (20)
Country | Link |
---|---|
US (1) | US4845453A (ja) |
EP (1) | EP0315835B1 (ja) |
JP (1) | JP2693188B2 (ja) |
KR (1) | KR0127019B1 (ja) |
CN (1) | CN1020018C (ja) |
AR (1) | AR244019A1 (ja) |
AT (1) | ATE85725T1 (ja) |
AU (1) | AU601135B2 (ja) |
BR (1) | BR8805790A (ja) |
CA (1) | CA1303693C (ja) |
DD (1) | DD283474A5 (ja) |
DE (2) | DE3737989C1 (ja) |
ES (1) | ES2040308T3 (ja) |
HU (1) | HU200029B (ja) |
IN (1) | IN171971B (ja) |
RU (1) | RU2046427C1 (ja) |
TR (1) | TR24104A (ja) |
UA (1) | UA25892A1 (ja) |
YU (1) | YU47634B (ja) |
ZA (1) | ZA888251B (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR8700893A (pt) * | 1986-03-13 | 1987-12-22 | Messwandler Bau Ag | Transformador combinado de alta tensao e de corrente de alta tensao |
DE3737989C1 (de) * | 1987-11-09 | 1989-05-11 | Messwandler Bau Ag | Hochspannungsspannungswandler |
CH682190A5 (ja) * | 1991-04-22 | 1993-07-30 | Asea Brown Boveri | |
JPH0992127A (ja) * | 1995-09-19 | 1997-04-04 | Hitachi Ltd | 漏電遮断器 |
WO2007067999A2 (en) * | 2005-12-09 | 2007-06-14 | Amnis Corporation | Extended depth of field imaging for high speed object analysis |
WO2010061399A1 (en) * | 2008-11-27 | 2010-06-03 | Areva T&D India Ltd. | A current transformer |
CN101982858A (zh) * | 2010-10-13 | 2011-03-02 | 中国人民解放军国防科学技术大学 | 磁浮列车用电抗器 |
CN102737828B (zh) * | 2011-04-13 | 2015-08-26 | 华东电力试验研究院有限公司 | 带暂态过电压监测单元的电容式电压互感器 |
CN104576006B (zh) * | 2015-01-08 | 2016-09-28 | 大连第二互感器集团有限公司 | 一种能减少局部放电的电流互感器及其制造方法 |
DE102015216860A1 (de) * | 2015-09-03 | 2017-03-09 | Siemens Aktiengesellschaft | Felgenelektrode und Wicklungsanordnung eines Messwandlers |
DE102016216499B4 (de) * | 2016-09-01 | 2018-04-19 | Siemens Aktiengesellschaft | Spannungswandlereinheit mit einem Aktivteilgehäuse |
US11328863B2 (en) * | 2016-12-21 | 2022-05-10 | Hitachi Energy Switzerland Ag | Combined instrument transformer for HV applications |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE699987C (de) * | 1934-09-30 | 1940-12-11 | Aeg | Hochspannungstransformator, insbesondere Spannungswandler |
US2170048A (en) * | 1935-03-20 | 1939-08-22 | Edison Inc Thomas A | Coupled circuit system |
US3028569A (en) * | 1959-08-31 | 1962-04-03 | Gen Electric | Open core potential transformer |
DE1227140B (de) * | 1962-09-26 | 1966-10-20 | Siemens Ag | Spannungswandler mit einem Stabkern |
US3173115A (en) * | 1962-10-26 | 1965-03-09 | Westinghouse Electric Corp | High voltage potential transformer |
US3699488A (en) * | 1972-02-28 | 1972-10-17 | Allis Chalmers | Distribution transformer having static shield |
DE2452056B2 (de) * | 1974-11-02 | 1978-02-09 | Messwandler-Bau Gmbh, 8600 Bamberg | Induktiver spannungswandler fuer eine mittels isoliergas vollisolierte, metallgekapselte hochspannungsschaltanlage |
DE3608390A1 (de) * | 1986-03-13 | 1987-09-17 | Messwandler Bau Ag | Kombinierter hochspannungsstrom- und -spannungswandler |
BR8700893A (pt) * | 1986-03-13 | 1987-12-22 | Messwandler Bau Ag | Transformador combinado de alta tensao e de corrente de alta tensao |
DE3737989C1 (de) * | 1987-11-09 | 1989-05-11 | Messwandler Bau Ag | Hochspannungsspannungswandler |
-
1987
- 1987-11-09 DE DE3737989A patent/DE3737989C1/de not_active Expired
-
1988
- 1988-10-27 IN IN892/CAL/88A patent/IN171971B/en unknown
- 1988-10-27 AR AR88312319A patent/AR244019A1/es active
- 1988-10-28 AT AT88117960T patent/ATE85725T1/de not_active IP Right Cessation
- 1988-10-28 DE DE8888117960T patent/DE3878404D1/de not_active Expired - Fee Related
- 1988-10-28 ES ES198888117960T patent/ES2040308T3/es not_active Expired - Lifetime
- 1988-10-28 YU YU201588A patent/YU47634B/sh unknown
- 1988-10-28 EP EP88117960A patent/EP0315835B1/de not_active Expired - Lifetime
- 1988-11-03 ZA ZA888251A patent/ZA888251B/xx unknown
- 1988-11-04 UA UA4356843A patent/UA25892A1/uk unknown
- 1988-11-04 RU SU884356843A patent/RU2046427C1/ru not_active IP Right Cessation
- 1988-11-07 US US07/268,340 patent/US4845453A/en not_active Expired - Lifetime
- 1988-11-07 DD DD88321538A patent/DD283474A5/de not_active IP Right Cessation
- 1988-11-07 BR BR888805790A patent/BR8805790A/pt not_active IP Right Cessation
- 1988-11-08 TR TR88/0811A patent/TR24104A/xx unknown
- 1988-11-08 HU HU885741A patent/HU200029B/hu not_active IP Right Cessation
- 1988-11-08 CA CA000582525A patent/CA1303693C/en not_active Expired - Fee Related
- 1988-11-08 AU AU24797/88A patent/AU601135B2/en not_active Ceased
- 1988-11-08 CN CN88107737A patent/CN1020018C/zh not_active Expired - Fee Related
- 1988-11-09 KR KR1019880014708A patent/KR0127019B1/ko not_active IP Right Cessation
- 1988-11-09 JP JP63281514A patent/JP2693188B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA1303693C (en) | 1992-06-16 |
UA25892A1 (uk) | 1999-02-26 |
HU200029B (en) | 1990-03-28 |
DE3878404D1 (de) | 1993-03-25 |
JPH01258405A (ja) | 1989-10-16 |
EP0315835A1 (de) | 1989-05-17 |
IN171971B (ja) | 1993-02-27 |
KR890008865A (ko) | 1989-07-12 |
DD283474A5 (de) | 1990-10-10 |
DE3737989C1 (de) | 1989-05-11 |
HUT49746A (en) | 1989-10-30 |
CN1020018C (zh) | 1993-03-03 |
ES2040308T3 (es) | 1993-10-16 |
AU601135B2 (en) | 1990-08-30 |
AU2479788A (en) | 1989-05-11 |
ATE85725T1 (de) | 1993-02-15 |
AR244019A1 (es) | 1993-09-30 |
YU201588A (en) | 1991-02-28 |
BR8805790A (pt) | 1989-08-01 |
US4845453A (en) | 1989-07-04 |
KR0127019B1 (ko) | 1998-04-02 |
TR24104A (tr) | 1991-03-18 |
YU47634B (sh) | 1995-12-04 |
CN1036477A (zh) | 1989-10-18 |
RU2046427C1 (ru) | 1995-10-20 |
JP2693188B2 (ja) | 1997-12-24 |
ZA888251B (en) | 1989-08-30 |
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