DE9409403U1 - Voltage converter - Google Patents
Voltage converterInfo
- Publication number
- DE9409403U1 DE9409403U1 DE19949409403 DE9409403U DE9409403U1 DE 9409403 U1 DE9409403 U1 DE 9409403U1 DE 19949409403 DE19949409403 DE 19949409403 DE 9409403 U DE9409403 U DE 9409403U DE 9409403 U1 DE9409403 U1 DE 9409403U1
- Authority
- DE
- Germany
- Prior art keywords
- voltage
- switchgear
- encapsulation housing
- measuring
- measuring probe
- 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
- 238000005538 encapsulation Methods 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 11
- 238000012360 testing method Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/16—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices
- G01R15/165—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices measuring electrostatic potential, e.g. with electrostatic voltmeters or electrometers, when the design of the sensor is essential
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/065—Means for detecting or reacting to mechanical or electrical defects
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Description
94GA06 894GA06 8
Beschreibung
SpannungswandlerDescription
Voltage converter
Die Erfindung bezieht sich auf einen Spannungswandler mit einem Kapselungsgehäuse für eine metallgekapselte Hochspannungsschaltanlage .The invention relates to a voltage transformer with an encapsulation housing for a metal-encapsulated high-voltage switchgear.
Ein derartiger Spannungswandler ist beispielsweise aus dem Siemens Prospekt "Auf Zukunft schalten mit SFg-isolierten Schaltanlagen", Seite 4, 5 bekannt.Such a voltage transformer is known, for example, from the Siemens brochure "Switching to the future with SFg-insulated switchgear", pages 4 and 5.
Solche Spannungswandler werden in gekapselte Hochspannungsschaltanlagen eingebaut, um die Betriebsspannung zu messen.Such voltage transformers are installed in encapsulated high-voltage switchgear to measure the operating voltage.
Ein Problem ergibt sich diesbezüglich beim Aufbau der Anlage und bei der Hochspannungsprüfung, bei der die dielektrische Festigkeit der gesamten Anlage überprüft wird. Eine solche Messung findet normalerweise vor der Installation der Spannungswandler statt, um die hohe, für den Test der Schaltanlage notwendige Wechselspannung nicht an die Spannungswandler gelangen zu lassen. Die Spannungswandler werden üblicherweise nach ihrer Herstellung einer eigenen Hochspannungsprüfung unterzogen. Sollten jedoch Transportschäden an Spannungswandlern auftreten, so können diese nach dem Einbau in die gekapselte Hochspannungsschaltanlage nur schwierig festgestellt werden.A problem arises in this regard when setting up the system and during the high-voltage test, which checks the dielectric strength of the entire system. Such a measurement is normally carried out before the voltage transformers are installed in order to prevent the high alternating voltage required to test the switchgear from reaching the voltage transformers. The voltage transformers are usually subjected to their own high-voltage test after they have been manufactured. However, if transport damage occurs to voltage transformers, this can be difficult to detect after installation in the encapsulated high-voltage switchgear.
Es ist üblich, an verschiedenen Stellen innerhalb einer gekapselten Hochspannungsschaltanlage Meßsonden zur Messung von Teilentladungen und/oder Überspannungen vorzusehen. Über solche Meßsonden können auf verschiedene Art und Weise Teilentladungen und Überspannungen nachgewiesen werden, wie es beispielsweise im Artikel "Premiere für Feldsonden" in der Siemens Zeitschrift EV-Report 1/94 dargestellt ist.It is usual to provide measuring probes for measuring partial discharges and/or overvoltages at various points within an encapsulated high-voltage switchgear. Partial discharges and overvoltages can be detected in various ways using such measuring probes, as is shown, for example, in the article "Premiere for field probes" in the Siemens magazine EV-Report 1/94.
94 G 4 O 6 d94 G 4 O 6 d
Der Erfindung liegt die Aufgabe zugrunde, gesondert für Spannungswandler nach deren Einbau in eine metallgekapselte Schaltanlage eine Uberwachungsmöglichkeit für Teilentladungen bzw. dielektrische Festigkeit zu schaffen. 5The invention is based on the task of creating a monitoring option for partial discharges or dielectric strength separately for voltage transformers after they have been installed in a metal-encapsulated switchgear. 5
Die Aufgabe wird erfindungsgemäS dadurch gelöst, daß innerhalb des Kapselungsgehäuses des Spannungswandlers eine MeS-sonde zur Messung von Teilentladungen und/oder Überspannungen vorgesehen ist.The object is achieved according to the invention in that a measuring probe for measuring partial discharges and/or overvoltages is provided within the encapsulation housing of the voltage transformer.
Eine solche Meßsonde erlaubt die Überprüfung eines Spannungswandlers, ohne daß das Anlegen einer sehr hohen Testspannung notwendig wäre, so daß die Gefahr der Beschädigung des Spannungswandlers, wie sie beim Hochspannungstest der gesamten Schaltanlage besteht, ausgeschlossen ist.Such a measuring probe allows a voltage transformer to be tested without the need to apply a very high test voltage, so that the risk of damaging the voltage transformer, as occurs during high-voltage testing of the entire switchgear, is excluded.
Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, daß die Meßsonde im wesentlichen aus einer im Inneren des Kapselungsgehäuses angeordneten Elektrode besteht. 20An advantageous embodiment of the invention provides that the measuring probe essentially consists of an electrode arranged inside the encapsulation housing. 20
Eine solche Meßsonde ist konstruktiv einfach aufgebaut, wenig fehleranfällig und kostengünstig.Such a measuring probe is structurally simple, less prone to errors and cost-effective.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels in einer Zeichnung gezeigt und anschließend beschrieben. In the following, the invention is shown using an embodiment in a drawing and then described.
Dabei zeigt die Figur schematisch einen Spannungswandler und einen Teil einer gekapselten Hochspannungsschaltanlage.The figure shows a schematic of a voltage transformer and part of an encapsulated high-voltage switchgear.
An einen Flansch 1 einer metallgekapselten Hochspannungsschaltanlage 2 ist das Kapselungsgehäuse 3 eines Spannungswandlers 4 gasdicht angeflanscht. Das Innere des Kapselungsgehäuses 3 ist durch einen von einem Hochspannungsleiter 10 durchsetzten Schottisolator 5 vom Inneren der Metallkapselung der übrigen Hochspannungsschaltanlage 2 getrennt. Im InnerenThe encapsulation housing 3 of a voltage transformer 4 is flanged in a gas-tight manner to a flange 1 of a metal-encapsulated high-voltage switchgear 2. The interior of the encapsulation housing 3 is separated from the interior of the metal encapsulation of the rest of the high-voltage switchgear 2 by a bulkhead insulator 5 through which a high-voltage conductor 10 passes. Inside
94 G 4 0 6 894 G 4 0 6 8
des Kapselungsgehäuses 3 ist eine MeSsonde 6 in Form einer
Meßelektrode 9 angeordnet, die zur Messung von Teilentladungen und/oder Oberspannungen dient. Die AnschluSleitung 7 der
Meßsonde 6 ist isoliert und gasdicht durch das Kapselungsgehäuse 3 hindurchgeführt und zu einer außerhalb des Kapselungsgehäuses
3 angeordneten Meßelektronik 8 hingeführt.of the encapsulation housing 3 is a measuring probe 6 in the form of a
Measuring electrode 9 is arranged, which serves to measure partial discharges and/or overvoltages. The connecting line 7 of the measuring probe 6 is insulated and passed through the encapsulation housing 3 in a gas-tight manner and led to a measuring electronics 8 arranged outside the encapsulation housing 3.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19949409403 DE9409403U1 (en) | 1994-06-06 | 1994-06-06 | Voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19949409403 DE9409403U1 (en) | 1994-06-06 | 1994-06-06 | Voltage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9409403U1 true DE9409403U1 (en) | 1994-07-28 |
Family
ID=6909684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19949409403 Expired - Lifetime DE9409403U1 (en) | 1994-06-06 | 1994-06-06 | Voltage converter |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE9409403U1 (en) |
-
1994
- 1994-06-06 DE DE19949409403 patent/DE9409403U1/en not_active Expired - Lifetime
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