DE19533559A1 - Active power and current limiting method for power capacitors testing - Google Patents
Active power and current limiting method for power capacitors testingInfo
- Publication number
- DE19533559A1 DE19533559A1 DE19533559A DE19533559A DE19533559A1 DE 19533559 A1 DE19533559 A1 DE 19533559A1 DE 19533559 A DE19533559 A DE 19533559A DE 19533559 A DE19533559 A DE 19533559A DE 19533559 A1 DE19533559 A1 DE 19533559A1
- Authority
- DE
- Germany
- Prior art keywords
- power
- testing
- capacitors
- current limiting
- active power
- 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.)
- Ceased
Links
Classifications
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/64—Testing of capacitors
Abstract
Description
Verfahren zur Begrenzung von Wirkleistung und Strom im Stö rungsfall bei der Prüfung von Leistungskondensatoren.Process for limiting active power and current in disturbance case when testing power capacitors.
Die Erfindung betrifft ein Verfahren zur Begrenzung von Wirk leistung und Strom im Störungsfall bei der Prüfung von Lei stungskondensatoren.The invention relates to a method for limiting effectiveness power and current in the event of a fault when testing Lei power capacitors.
Bei der Prüfung von Leistungskondensatoren besteht die Ge fahr, daß in Störungsfällen ein derartiger Druckanstieg im Gehäuse stattfinden kann, daß das Gehäuse explodiert.When testing power capacitors, Ge drive that such a pressure increase in the event of malfunctions Housing can take place that the housing explodes.
Um diese Gefahren zu vermeiden ist es bekannt, schnelle Über stromsicherungen zu verwenden bzw. die Meßwerte zu beobachten und bei Überschreitung von Grenzwerten den Kondensator frei zuschalten. Hierbei ist es erforderlich, zusätzliche mecha nische Vorrichtungen bereitzustellen, die ein schnelles Öffnen des Gehäuses zur Begrenzung des Druckanstiegs und Ver meidung von Explosionen dienen.In order to avoid these dangers it is known to quickly over Use current fuses or observe the measured values and if the limit values are exceeded, the capacitor is released switch on. This requires additional mecha African devices to provide a fast Open the housing to limit the pressure rise and Ver to avoid explosions.
Der Nachteil bei den beschriebenen Verfahren ist, daß Strom- und Wirkleistung zunächst die Nennwerte weit überschreiten, daß durch Belastung eine Standzeitverringerung von Kontak tiersystemen eintritt und daß starke Netzrückwirkungen im Störungsfall vorkommen.The disadvantage of the methods described is that electricity and Active power initially far exceeds the nominal values, that by loading a reduction in the service life of contact animal systems occurs and that strong network repercussions in Malfunction occurs.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren der eingangs genannten Art anzugeben, bei dem die vorstehend aufgezeigten Schwierigkeiten umgangen werden.The object of the present invention is a method of Specify the type mentioned, in which the above identified difficulties can be avoided.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der zu prüfende Kondensator als Kapazität in einem Reihenschwing kreis geschaltet ist.This object is achieved in that the testing capacitor as capacitance in a series oscillation circuit is switched.
Hierdurch ergeben sich folgende Vorteile:This has the following advantages:
- 1. Der Strom wird im Störungsfall ohne Überschwingen auf 1/Q × Nennstrom begrenzt (Q = Güte des verwendeten Schwingkreises);1. The current is on in the event of a fault without overshoot 1 / Q × nominal current limited (Q = quality of the used Resonant circuit);
- 2. Es treten keine Netzrückwirkungen im Störungsfall auf;2. There are no network effects in the event of a fault;
- 3. Prüfspannung und Prüfstrom sind von hoher spektraler Rein heit, wodurch neben der reinen Belastungsprüfung Messungen von kleinen Verlustfaktoren bis hin zu Teilentladungen möglich sind;3. Test voltage and test current are of high spectral purity unit, which means that in addition to the pure load test, from small loss factors to partial discharges possible are;
- 4. die dem Netz entnommene Leistung ist nahezu reell und be trägt nur ca. 1/Q × Pprüf.4. the power taken from the network is almost real and is only about 1 / Q × P ver .
Die beiden letzten Vorteile würden sich auch bei einem Paral lelschwingkreis ergeben, wogegen sämtliche Vorteile nur durch die Schaltung im Reihenschwingkreis erhalten werden.The last two advantages would also apply to a parallel lelschwingkreis yield, whereas all advantages only by the circuit can be obtained in the series resonant circuit.
Im folgenden sind zwei Reihenschwingkreise als Ausführungs
beispiele angeführt:
560 kVAr, Q ca. 20;
125 kVAr, Q ca. 10.The following are two series resonant circuits as examples:
560 kVAr, Q approx. 20;
125 kVAr, Q approx. 10.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19533559A DE19533559A1 (en) | 1995-09-11 | 1995-09-11 | Active power and current limiting method for power capacitors testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19533559A DE19533559A1 (en) | 1995-09-11 | 1995-09-11 | Active power and current limiting method for power capacitors testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19533559A1 true DE19533559A1 (en) | 1997-03-13 |
Family
ID=7771832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19533559A Ceased DE19533559A1 (en) | 1995-09-11 | 1995-09-11 | Active power and current limiting method for power capacitors testing |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19533559A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3020107A1 (en) * | 1980-05-27 | 1981-12-03 | Siemens AG, 1000 Berlin und 8000 München | MONITORING DEVICE FOR AN LC FILTER CIRCUIT ON AN AC VOLTAGE NETWORK |
| EP0187312A1 (en) * | 1985-01-08 | 1986-07-16 | BBC Brown Boveri AG | Filter circuit |
-
1995
- 1995-09-11 DE DE19533559A patent/DE19533559A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3020107A1 (en) * | 1980-05-27 | 1981-12-03 | Siemens AG, 1000 Berlin und 8000 München | MONITORING DEVICE FOR AN LC FILTER CIRCUIT ON AN AC VOLTAGE NETWORK |
| EP0187312A1 (en) * | 1985-01-08 | 1986-07-16 | BBC Brown Boveri AG | Filter circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: EPCOS AG, 81541 MUENCHEN, DE |
|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |