DE19749986A1 - Metal-encapsulated, gas-insulated HV switchgear apparatus - Google Patents
Metal-encapsulated, gas-insulated HV switchgear apparatusInfo
- Publication number
- DE19749986A1 DE19749986A1 DE1997149986 DE19749986A DE19749986A1 DE 19749986 A1 DE19749986 A1 DE 19749986A1 DE 1997149986 DE1997149986 DE 1997149986 DE 19749986 A DE19749986 A DE 19749986A DE 19749986 A1 DE19749986 A1 DE 19749986A1
- Authority
- DE
- Germany
- Prior art keywords
- field control
- gas
- socket
- control element
- switchgear according
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0878—Sensors; antennas; probes; detectors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/066—Devices for maintaining distance between conductor and enclosure
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
Description
Die Erfindung betrifft eine Hochspannungsschaltanlage gemäß dem Oberbegriff des Anspruches 1.The invention relates to a high-voltage switchgear according to the preamble of Claim 1.
In elektrischen Schaltanlagen der oben genannten Art besteht zeitweise das Problem, daß aufgrund ungünstiger Isolationsverhältnisse Teilentladungen auftreten, die auf Dauer die Isolierung stark beschädigen und zu einer Havarie in der Schaltanlage füh ren können.In electrical switchgear of the type mentioned above, there is occasionally the problem that partial discharges occur due to unfavorable insulation conditions Severely damage the insulation and cause an accident in the switchgear can.
Aufgabe der Erfindung ist es, eine Schaltanlage der eingangs genannten Art zu schaf fen, bei der die Teilentladungen detektiert werden können, ohne große Veränderungen der Schaltanlage vornehmen zu müssen.The object of the invention is to provide a switchgear of the type mentioned in which the partial discharges can be detected without major changes the switchgear.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des An spruches 1 gelöst.This object is achieved by the characterizing features of the Proverb 1 solved.
Man macht sich dabei zunutze, daß Teilentladungen hochfrequente elektromagneti sche Wellen aussenden und daß innerhalb der Schottungsisolatoren Feldsteuerele mente angeordnet sind; diese Feldsteuerelemente wirken als eine Antenne, mit denen jene hochfrequenten Wellen aufgefangen und empfangen werden können. Diese von den Feldsteuerelementen empfangenen Signale können mit geeigneten Auskoppe lungselementen ausgekoppelt und einer Meß- und Auswerteeinrichtung zugeführt wer den. One makes use of the fact that partial discharges of high-frequency electromagnetic emit cal waves and that within the bulkhead isolators field control elements elements are arranged; these field controls act as an antenna with which those high-frequency waves can be caught and received. This one from The field control elements can receive signals with suitable decoupling tion elements decoupled and fed to a measuring and evaluation device the.
Weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind den weiteren Unteransprüchen zu entnehmen.Further advantageous refinements and improvements of the invention are the see further subclaims.
Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung näher erläutert und beschrieben werden.Using the drawing, in which an embodiment of the invention is shown, the invention and further advantageous refinements and improvements the invention are explained and described in more detail.
Es zeigenShow it
Fig. 1 eine schematische Teilschnittansicht einer Schaltanlage und Schaltungsisola tor, Fig. 1 is a schematic partial sectional view of a switching circuit and Isola gate,
Fig. 2 eine schematische Darstellung einer Auskoppelungsanordnung, im Schnitt, und Fig. 2 is a schematic representation of a decoupling arrangement, in section, and
Fig. 3 eine Schnittansicht durch die Auskoppelungsanordnung, in vergrößertem Maßstab. Fig. 3 is a sectional view through the decoupling arrangement, on an enlarged scale.
In einer metallgekapselten Schaltanlage mit einer Metallkapselung 10 sitzt zwischen den Flanschen 11a, 12a zweier Rohrteilstücke 11 und 12 ein Schottungsisolator 13, durch den Innenleiter 14 (nur einer ist gezeichnet) hindurchgeführt werden. Innerhalb des Schottungsisolators befindet sich ein Feldsteuerelement 15, welches aus elektrisch leitendem Material gebildet ist (s. Fig. 2). Solche Feldsteuerelemente 15 sind an sich bekannt, so daß sie hier nicht näher beschrieben zu werden brauchen.In a metal-enclosed switchgear assembly with a metal encapsulation 10 , between the flanges 11 a, 12 a of two pipe sections 11 and 12, there is a partition insulator 13 , through which the inner conductor 14 (only one is shown) is passed. A field control element 15 , which is formed from electrically conductive material, is located within the partition isolator (see FIG. 2). Such field control elements 15 are known per se, so that they need not be described in more detail here.
Das eine Ende des Feldsteuerelementes 15 endet an einer durch einen metallischen Ring gebildeten Umfangskante 16 des Schottungsisolators 13; dort ist eine Öffnung 17 vorgesehen, in die das Auskoppelelement gemäß Fig. 3 eingesetzt werden kann.One end of the field control element 15 ends at a peripheral edge 16 of the partition isolator 13 formed by a metallic ring; there is an opening 17 into which the decoupling element according to FIG. 3 can be inserted.
Das Auskoppelelement gemäß Fig. 3 besitzt einen Stift 20, an dessen freiem Ende ein Gewinde 21 angeordnet ist, mit dem das Auskoppelelement gemäß Fig. 3 in elektrisch leitende Verbindung mit dem Feldsteuerelement 15, das so ausgebildet ist, daß eine Erdungseinrichtung anschließbar ist, gebracht werden kann. Der Stift 20 besitzt ein weiteres Außengewinde 22, mit dem er in das Innengewinde 23 eines Isolierelementes 24 eingeschraubt ist. Das Isolierelement 24 ist in eine Buchse 25 eingesetzt und zwar ebenfalls wieder in ein Innengewinde 26. Die Innenbohrung 27 der Buchse 25, die das Gewinde 26 trägt, besitzt eine Stufung 28, gegen die eine radiale Stufung 29 des Iso lierkörpers 24 anliegt, so daß der Isolierkörper 24 im Gewinde 26 fixiert ist. Über die Stufungen 28, 29 verringert sich der Innendurchmesser der Buchse 25 und der Außen durchmesser des Isolierstücks 24. The decoupling element according to FIG. 3 has a pin 20 is disposed at the free end of a thread 21 with which the decoupling element that grounding means is shown in FIG. 3 in electrically conductive connection with the field control element 15, which is formed so connected, brought can be. The pin 20 has a further external thread 22 , with which it is screwed into the internal thread 23 of an insulating element 24 . The insulating element 24 is inserted into a socket 25 and again also in an internal thread 26. The inner bore 27 of the socket 25 , which carries the thread 26 , has a step 28 , against which a radial step 29 of the Iso lierkörper 24 rests, so that the insulating body 24 is fixed in the thread 26 . About the steps 28 , 29 , the inner diameter of the bush 25 and the outer diameter of the insulating piece 24 is reduced .
Mit dem Zapfen oder Stift 20 ist ein Verbindungselement 30 verbunden, das mit einer Koaxialsteckbuchse 31 in Verbindung steht, mit deren aus der Buchse 25 herausra gendem Ende 32 eine handelsübliche Maßeinrichtung 34 verbunden werden kann, wie in Fig. 2 dargestellt.With the pin or pin 20 , a connecting element 30 is connected, which is connected to a coaxial socket 31 , with the end 32 from the socket 25 a commercially available measuring device 34 can be connected, as shown in Fig. 2.
Die durch das Feldsteuerelement 15 empfangenen, durch Teilentladungen TE erzeugte elektromagnetische Wellen 35 werden über die erfindungsgemäße Anordnung nach außen herausgekoppelt und können über z. B. ein UHF-Kabel 35 der Auswerte- und Meßanordnung 34 zugeführt werden.The received by the field control element 15 , generated by partial discharges TE electromagnetic waves 35 are coupled out via the arrangement according to the invention and can be z. B. a UHF cable 35 of the evaluation and measurement arrangement 34 are supplied.
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997149986 DE19749986A1 (en) | 1997-11-12 | 1997-11-12 | Metal-encapsulated, gas-insulated HV switchgear apparatus |
DE29723524U DE29723524U1 (en) | 1997-11-12 | 1997-11-12 | High voltage switchgear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997149986 DE19749986A1 (en) | 1997-11-12 | 1997-11-12 | Metal-encapsulated, gas-insulated HV switchgear apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19749986A1 true DE19749986A1 (en) | 1999-05-27 |
Family
ID=7848399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1997149986 Withdrawn DE19749986A1 (en) | 1997-11-12 | 1997-11-12 | Metal-encapsulated, gas-insulated HV switchgear apparatus |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19749986A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10034363A1 (en) * | 2000-07-14 | 2002-01-24 | Abb Patent Gmbh | Partial discharge sensor for high voltage unit has broadband loop antenna to sense longitudinal fields |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277746A (en) * | 1978-02-03 | 1981-07-07 | Hitachi, Ltd. | Gas-insulated electric apparatus and method of detecting partial discharge therein |
US5200737A (en) * | 1990-11-30 | 1993-04-06 | Kabushiki Kaisha Toshiba | System and method for detecting partial discharge of gas-insulated switchgear |
DE4310619A1 (en) * | 1992-04-02 | 1993-10-14 | Fuji Electric Co Ltd | Detecting reduction in degree of vacuum of vacuum switching valve - determining discharge current caused by bulge, e.g. in protective shield, whilst holding shield at same potential as electrodes |
DE19523074A1 (en) * | 1995-06-24 | 1997-01-02 | Abb Management Ag | Support insulator |
-
1997
- 1997-11-12 DE DE1997149986 patent/DE19749986A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277746A (en) * | 1978-02-03 | 1981-07-07 | Hitachi, Ltd. | Gas-insulated electric apparatus and method of detecting partial discharge therein |
US5200737A (en) * | 1990-11-30 | 1993-04-06 | Kabushiki Kaisha Toshiba | System and method for detecting partial discharge of gas-insulated switchgear |
DE4310619A1 (en) * | 1992-04-02 | 1993-10-14 | Fuji Electric Co Ltd | Detecting reduction in degree of vacuum of vacuum switching valve - determining discharge current caused by bulge, e.g. in protective shield, whilst holding shield at same potential as electrodes |
DE19523074A1 (en) * | 1995-06-24 | 1997-01-02 | Abb Management Ag | Support insulator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10034363A1 (en) * | 2000-07-14 | 2002-01-24 | Abb Patent Gmbh | Partial discharge sensor for high voltage unit has broadband loop antenna to sense longitudinal fields |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |