DE202004000279U1 - Circuit arrangement for signal conditioning has per conductor parallel to display measurement circuit for voltage display with constant input impedance a further measurement circuit with high input resistance - Google Patents
Circuit arrangement for signal conditioning has per conductor parallel to display measurement circuit for voltage display with constant input impedance a further measurement circuit with high input resistance Download PDFInfo
- Publication number
- DE202004000279U1 DE202004000279U1 DE200420000279 DE202004000279U DE202004000279U1 DE 202004000279 U1 DE202004000279 U1 DE 202004000279U1 DE 200420000279 DE200420000279 DE 200420000279 DE 202004000279 U DE202004000279 U DE 202004000279U DE 202004000279 U1 DE202004000279 U1 DE 202004000279U1
- Authority
- DE
- Germany
- Prior art keywords
- display
- circuit
- measurement circuit
- circuit arrangement
- 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
Links
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
Schaltungsanordnung zur Messwertaufbereitung von Signalen aus kapazitiven Spannungsanzeigesystemen in HochspannungsanlagenCircuit arrangement for the processing of measured values of signals from capacitive voltage display systems in high-voltage systems
Allgemeine Beschreibung / Stand der Technikgeneral description / State of the art
In Hochspannungsanlagen (1-380kV) sind sogenannte kapazitive Spannungsanzeige- und Prüfsysteme (im Folgenden Spannungsanzeigesysteme genannt) bekannt und u.a. in der Norm VDE 0682 Teil 415 bzw. IEC 61243-5 näher beschrieben. Diese Spannungsanzeigesysteme koppeln zur Prüfung auf Vorhandensein der Spannung dieselbe mittels eines sog. kapazitiven Koppelteils aus und führen es einer Auswerteschaltung mit entsprechender Anzeige zu, die es erlaubt den Spannungszustand festzustellen.In high voltage systems (1-380kV) are so-called capacitive voltage display and test systems (hereinafter referred to as voltage display systems) and among others described in more detail in standard VDE 0682 Part 415 and IEC 61243-5. These voltage display systems couple for testing the presence of the voltage by means of a so-called capacitive Coupling part out and lead it to an evaluation circuit with a corresponding display that it allows to determine the state of tension.
Es werden fest in die Anlage integrierte und steckbare Systeme unterschieden. Bei letzteren kann das Anzeigegerät räumlich vom Koppelteil entfernt werden und ist somit austauschbar.It is firmly integrated into the system and pluggable systems. In the latter, the display device can be spatially from Coupling part are removed and is therefore interchangeable.
Bei integrierten Spannungsanzeigesystemen
bleibt das Anzeigegerät
dauerhaft mit dem Koppelteil verbunden. Besonders vorteilhaft ist
die Verwendung von integrierten kapazitiven Spannungsanzeigesystemen
mit konstanter Eingangsimpedanz (Z4). Diese bestehen zumindest aus
einem Koppelteil mit Primärkapazität C1 (
Aufgabenstellungtask
Soll das Signal aus dem kapazitiven Koppelteil nicht nur für die Anzeige des Vorhandenseins der Spannung, sondern auch zur Spannungsmessung oder Nullspannungsbildung herangezogen werden, muss ein weiterer Messkreis parallel zum Anzeigemesskreis aufgebaut werden. Die Messkreise dürfen sich nicht gegenseitig beeinflussen. Damit das Signal auch zum Zwecke der Nullspannungsmessung verarbeitet werden kann, ist eine signalformgetreue Verstärkung zwingend.Should the signal from the capacitive Coupling part not only for the indication of the presence of voltage, but also for voltage measurement or zero voltage formation, another must be used Measuring circuit parallel to the display measuring circuit. The measuring circles allowed to do not influence each other. So that the signal also for the purpose The zero voltage measurement can be processed, a form-true amplification is mandatory.
Erfinderische Lösunginnovative solution
Die Aufgabenstellung wird dadurch
erfüllt, dass
dem integrierten Spannungsanzeigesystem (
Der Impedanzwandler (
Das Eingangssignal UL1e wird frequenzgetreu und möglichst phasentreu auf den Ausgang UL1a bzw. UL11a abgebildet, damit eine Weiterverarbeitung sowohl für Messung als auch für Schutzaufgaben gewährleistet ist.The input signal UL1e is true to frequency and if possible mapped onto the output UL1a or UL11a, so that a Processing both for Measurement as well for Protection tasks guaranteed is.
Optional kann das Signal aus dem
Impedanzwandler UL1a über
einen analogen oder digitalen Potenziometer (
Dieser Abgleich am Potenziometer kann sowohl manuell als auch über eine automatisierte Regelung erfolgen.This adjustment on the potentiometer can be done manually as well automated regulation.
Darüber hinaus kann die Schaltungsanordnung
für alle
drei Leiter eines Drehstromsystems dahingehend erweitert werden,
dass aus den Ausgangssignalen ULxa gemäß (
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420000279 DE202004000279U1 (en) | 2004-01-10 | 2004-01-10 | Circuit arrangement for signal conditioning has per conductor parallel to display measurement circuit for voltage display with constant input impedance a further measurement circuit with high input resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420000279 DE202004000279U1 (en) | 2004-01-10 | 2004-01-10 | Circuit arrangement for signal conditioning has per conductor parallel to display measurement circuit for voltage display with constant input impedance a further measurement circuit with high input resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202004000279U1 true DE202004000279U1 (en) | 2004-03-18 |
Family
ID=32049822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200420000279 Expired - Lifetime DE202004000279U1 (en) | 2004-01-10 | 2004-01-10 | Circuit arrangement for signal conditioning has per conductor parallel to display measurement circuit for voltage display with constant input impedance a further measurement circuit with high input resistance |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202004000279U1 (en) |
-
2004
- 2004-01-10 DE DE200420000279 patent/DE202004000279U1/en not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20040422 |
|
R163 | Identified publications notified |
Effective date: 20040812 |
|
R150 | Term of protection extended to 6 years |
Effective date: 20070709 |
|
R151 | Term of protection extended to 8 years |
Effective date: 20100812 |
|
R152 | Term of protection extended to 10 years | ||
R152 | Term of protection extended to 10 years |
Effective date: 20120703 |
|
R071 | Expiry of right | ||
R071 | Expiry of right |