DE354770C - Circuit arrangement of the overcurrent protection of lines connected in parallel - Google Patents
Circuit arrangement of the overcurrent protection of lines connected in parallelInfo
- Publication number
- DE354770C DE354770C DEA33181D DEA0033181D DE354770C DE 354770 C DE354770 C DE 354770C DE A33181 D DEA33181 D DE A33181D DE A0033181 D DEA0033181 D DE A0033181D DE 354770 C DE354770 C DE 354770C
- Authority
- DE
- Germany
- Prior art keywords
- circuit arrangement
- parallel
- relay
- lines connected
- overcurrent protection
- 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
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/267—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for parallel lines and wires
Landscapes
- Relay Circuits (AREA)
Description
Schaltungsanordnung des. Überstromschutzes parallel geschalteter Leitungen. In der Patentschrift 337314 ist eine Schaltungsanordnung mm Schutze parallel geschalteter Leitungen gegen Überströme beschrieben, bei :der am Anfang und Ende der Leitungen Überstromrelais mit von der Stromstärke abhängiger Auslösezeit eingebaut sind, die im normalen Betriebe, d. h. wenn die parallel geschalteten Leitungen sämtlich im Betrieb sind, durch ein die gleichmäßige Stromverteilung in Aden Leitungen kontrollierendes Steuerrelais gesperrt ,sind. Beim Auftreten eines Fehlers innerhalb des geschützten Leitungssystems gibt .das Steuerrelais die Überstromrelais frei, und die vom größten Strom durchflossene fehlerhafte Leitung wird abgeschaltet.Circuit arrangement of the overcurrent protection of lines connected in parallel. In the patent 337314 a circuit arrangement is mm protectors connected in parallel Lines against overcurrents described for: the one at the beginning and end of the lines Overcurrent relays are built in with a tripping time that depends on the current strength in normal operations, d. H. if the lines connected in parallel are all in Are in operation, by controlling the even distribution of current in the Aden lines Control relays are locked. When an error occurs within the protected The control relay releases the overcurrent relays, and those of the largest The faulty line flowing through the current is switched off.
Um die Auslösung .des Überstromrelais nicht nur von,der Höhe des Überstromes, sondern auch von der Richtung des Energieflusses abhängig zu machen, wird nach der Erfindung an Stelle .des lediglich vom Strom abhängigen Steuerrelais ein Wattrelais verwendet, das beim Lauf nach !der einen Richtung das eine Überstromrelais, beim Lauf nach der anderen Richtung das andere Überstromrelais sperrt bzw. freigibt.In order to trigger the overcurrent relay not only from, the level of the overcurrent, but also to make it dependent on the direction of the flow of energy, according to the Invention instead of the control relay, which is only dependent on the current, a wattrelay used, the one overcurrent relay when running in one direction Run in the other direction the other overcurrent relay blocks or enables.
Ein solches Wattrelais spricht aber bei sehr niedrigen Spannungen nicht mit Sicherheit an, würde also bei einem in unmittelbarer Nähe auftretenden Kurzschluß unwirksam sein. Um idiesen Fehler izubeheben, kann man das im Hauptpatent hesohriebene .Stromrelai.s R neben dem Wattrelais beibehalten. Dabei ist die Anordnung so zu treffen, daß das Stromrelais R :die beiden an einem Ende der Leitung liegenden Relais A freigibt, während das Wattrelais die Auswahl zwischen ,diesen beiden Relais besorgt.Such a wading relay speaks at very low voltages not with certainty, so would occur with one in the immediate vicinity Short circuit will be ineffective. In order to correct this error, this can be found in the main patent Retained hesohriebene .Stromrelai.s R next to the wattrelais. Here is the arrangement so that the current relay R: the two lying at one end of the line Relay A enables, while the water relay makes the choice between these two relays concerned.
Der Vorteil oder neuen Anordnung besteht darin, d#aß ein Versagen, id. h. ein Abschalten auch der gesunden Leitung nur dann eintreten kann, wenn sowohl die Spannung an der Stelle, iwo (die Relais eingebaut sind, zu niedrig ist als .auch wenn an dem entgegengesetzten Ende der Leitung keine Energie liefernden Maschinen oder Zuleitungen angeschlossen sind. Eine unerwünschte Abschaltung einer gesunden Leitung würde also nur :dann eintreten, wenn die genannten Fälle gleichzeitig auftreten, ein Fall, der im praktischen Betriebe wohl äußerst selten vorkommen wird.The advantage, or rearrangement, is that a failure, id. H. a shutdown of the healthy line can only occur if both the voltage at the point iwo (the relays are built in is too low than .auch when there are no power-supplying machines at the opposite end of the line or supply lines are connected. An unwanted shutdown of a healthy Management would only: then occur if the aforementioned cases occur simultaneously, a case that will probably occur extremely rarely in practical operations.
Das Steuerrelais R nach dem Hauptpatent und das Wattrelais nach dem vorliegenden Zusatzpatent :können in einem einzigen Relais vereinigt werden, das beispielsweise nach der Patentschrift 327631 gebaut sein kann.The control relay R according to the main patent and the Wattrelais according to the present additional patent: can be combined in a single relay that can be built for example according to the patent 327631.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA33181D DE354770C (en) | 1920-03-27 | 1920-03-27 | Circuit arrangement of the overcurrent protection of lines connected in parallel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA33181D DE354770C (en) | 1920-03-27 | 1920-03-27 | Circuit arrangement of the overcurrent protection of lines connected in parallel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE354770C true DE354770C (en) | 1922-06-15 |
Family
ID=6928051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA33181D Expired DE354770C (en) | 1920-03-27 | 1920-03-27 | Circuit arrangement of the overcurrent protection of lines connected in parallel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE354770C (en) |
-
1920
- 1920-03-27 DE DEA33181D patent/DE354770C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2742997C2 (en) | Procedure for overcurrent protection of inverters in high-voltage direct current transmission systems | |
DE354770C (en) | Circuit arrangement of the overcurrent protection of lines connected in parallel | |
DE604912C (en) | Protection device against internal faults in series capacitors | |
DE338824C (en) | Circuit arrangement of the overcurrent protection of lines connected in parallel | |
DE457892C (en) | Device to protect metal vapor rectifier systems in the event of return | |
DE638541C (en) | Protective device with pendulum lock for the protection of coupling lines | |
AT121910B (en) | Protective device for electrical systems. | |
DE576431C (en) | Device for restarting as a result of a fault in failed networks or network parts | |
DE376356C (en) | Protection circuit against overcurrent in branch lines with main switch in the supply line to the busbars and secondary switches in the branch lines | |
DE844334C (en) | Switching method for earth fault compensated three-phase networks | |
DE404704C (en) | Overcurrent protection with reactance short-circuited in fault-free operation | |
AT104964B (en) | Protection device for rectifier systems against backfire. | |
DE587842C (en) | Device for the automatic disconnection of a diseased phase conductor and for the automatic connection of a replacement conductor | |
AT92999B (en) | Circuit for electrical line networks. | |
AT132438B (en) | Safety device for switches and signals. | |
DE550061C (en) | Device for the rapid de-energization of electrical power generators | |
DE948341C (en) | Electromagnetic voltage-dependent switch-on and switch-off device | |
DE723819C (en) | Protective device for the selective shutdown of defective system parts | |
AT33117B (en) | Safety circuit for electrical signal boxes. | |
DE935850C (en) | Surge arrester for direct current high voltage systems | |
DE911758C (en) | Procedure for protecting inverters against interference | |
DE899068C (en) | Forming arrangement with mechanical contacts | |
DE886421C (en) | Electrically operated bell | |
DE713630C (en) | Device for the operation of overway signal systems or similar security systems with the help of primary elements | |
DE662943C (en) | Selective protection device for a network node depending on the line resistance |