DE903943C - Impedance relays, especially distance protection relays - Google Patents
Impedance relays, especially distance protection relaysInfo
- Publication number
- DE903943C DE903943C DEA7233D DEA0007233D DE903943C DE 903943 C DE903943 C DE 903943C DE A7233 D DEA7233 D DE A7233D DE A0007233 D DEA0007233 D DE A0007233D DE 903943 C DE903943 C DE 903943C
- Authority
- DE
- Germany
- Prior art keywords
- impedance
- current
- relays
- circuit
- winding
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/40—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current
Landscapes
- Relay Circuits (AREA)
Description
Das Patent 895 946 betrifft ein Schnellschaltrel,ais, insbesondere Impedarnzrelais, unter Verwendung eines mit großer Haltekraft, aber geringer Fernwirkung versehenen Haltemagneten; der mit getrennten, vom Gleich- und Wechselstrom durchflossenen Wicklungen versehen sein kann, wobei der - Gleichstromwicklung ein der Netzspannung proportionaler, gleichgerichteter und geglätteter Strom und der Wechsclstromwicklung der Phasenstrom des Netzes zugeführt wird und wobei der mehrphasige Wechselstrom für die Spannungsmagnetisierung aus drei Strömen mit einer Phasenverschiebung von 6o oder i2o elektrischen Gnaden besteht, die nach Gleichrichtung je einer Wicklung des oder der Haltemagneten zugeführt werden.Patent 895,946 relates to a quick release relay, ais, in particular Impedance relay, using one with great holding power, but little effect at a distance provided holding magnets; the one with separate, direct and alternating currents flowing through it Windings can be provided, the - DC winding an the mains voltage proportional, rectified and smoothed current and the AC winding the phase current of the network is supplied and wherein the polyphase alternating current for the voltage magnetization from three currents with a phase shift of 6o or i2o electrical grace exists, which after rectification each one winding of the holding magnet or magnets are supplied.
Bei einer derartigen Anordnung wird die Wattleistung des Impedanzgliedes im wesentlichen von der Spannungsseite verbraucht. Die vorliegende Erfindung beschäftigt sich nun mit der Aufgabe, durch Verwendung einer Leistung.ssparschaltung des Impedanzgliedes den Leistungsverbrauch der Anordnung nach dem Hauptpatent wesentlich herabzusetzen.With such an arrangement, the wattage of the impedance member essentially consumed from the voltage side. The present invention is concerned now with the task of using a power saving circuit of the impedance element significantly reduce the power consumption of the arrangement according to the main patent.
Die Eifindung sei an Hand der Zeichnung näher erläutert.The finding is explained in more detail with reference to the drawing.
Der dreiphasige Strom für die Spannungsmagnetisierung der Haltemagneten wird hierbei aus der Netzspannung U (_) genommen, und zwar zwei der Ströme (Stromkreis I und II) unter Einfügung geeigneter Vorwiderstände (K1 und K2) und R, während der dritte (Stromkreis III) aus diesen beidem Strömen über den Zwischenwandler,4 durch Zusammensetzung über den Summenstromwandler B erhalten wird. Der gleichgerichtete Strom J(-; durchfließt die Wicklungen a und b :der Haltemagneten, von denen der eine (A-Glied) als Anregegli.ed und der andere (Z-iGlied) als Impedanzglied dient, über den Dämpfungswiderstand D, zu dem parallel die Kapazität K vorgesehen ist.The three-phase current for the voltage magnetization of the holding magnets is taken from the mains voltage U (_), namely two of the currents (circuit I and II) with the addition of suitable series resistors (K1 and K2) and R, while the third (circuit III) is off these two currents via the intermediate transformer, 4 is obtained by combining via the summation current transformer B. The rectified current J (-; flows through the windings a and b : the holding magnets, one of which (A member) serves as a stimulus and the other (Z member) as an impedance member, via the damping resistor D, to which the capacitance K is provided.
Im Kreis II ist außer dem Widerstand R gemäß der Erfindung noch der im normaleng Betrieb engeschaltete Widerstand R' vorgesehen, der den Strom stark verkleinert und so groß zu wählen ist, daß das. Ansprechen des Anregegliedes (A-Glied) noch sicher vonstatten geht. Dieser erfindungsgemäß vorgesehene Widerstand R' wird im Augenblick des Auftretens eines Leitungskurzschlusses durch das Ansprechen des; Anregegliedes durch Einlegen. de-s Schalters i kurzgeschlossen, wodurch die Anordnung augenblicklich und schwingungsfrei auf Impedanzmeßbereitschaft geschaltet wird.In the circle II is in addition to the resistor R according to the invention still the In normal operation, a connected resistor R 'is provided, which increases the current strongly reduced in size and to be selected so large that the response of the excitation element (A element) is still going on safely. This resistor R 'provided according to the invention becomes at the moment a line short circuit occurs when the; Stimulating member by inserting. de-s switch i shorted, making the arrangement is switched instantaneously and vibration-free to readiness for impedance measurement.
Wird der Strom im Stromkreis II zwecks Erzielung einer großen Leistungsersparnis sehr stark geschwächt, so bleibt die 6o°-bzw. i2o°-Phasenlage auf der Gleichstromseite nicht mehr gewahrt. Die weitere Erfindung schlägt aus diesem Grunde vor, durch Einlegen des ebenfalls vom Anregeglied des Impe,danzrelais gesteuerten Schalters 2 bei L eistungskurzschluß noch die Kapazität K2 einzuschalten, wodurch die Phasenlage in der vorgeschriebenen Weise korrigiert wird.Is the current in circuit II in order to achieve a large power saving very much weakened, the 60 ° or i2o ° phase position on the direct current side no longer observed. The further invention proposes for this reason, by inserting of switch 2 at L, which is also controlled by the exciter of the impedance relay power short-circuit to switch on the capacitance K2, whereby the phase position in corrected in the prescribed manner.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA7233D DE903943C (en) | 1939-08-05 | 1939-08-05 | Impedance relays, especially distance protection relays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA7233D DE903943C (en) | 1939-08-05 | 1939-08-05 | Impedance relays, especially distance protection relays |
Publications (1)
Publication Number | Publication Date |
---|---|
DE903943C true DE903943C (en) | 1954-02-11 |
Family
ID=6921188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA7233D Expired DE903943C (en) | 1939-08-05 | 1939-08-05 | Impedance relays, especially distance protection relays |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE903943C (en) |
-
1939
- 1939-08-05 DE DEA7233D patent/DE903943C/en not_active Expired
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