DE923859C - Device for quick determination of the fault location in electrical wiring systems - Google Patents

Device for quick determination of the fault location in electrical wiring systems

Info

Publication number
DE923859C
DE923859C DEA18445D DEA0018445D DE923859C DE 923859 C DE923859 C DE 923859C DE A18445 D DEA18445 D DE A18445D DE A0018445 D DEA0018445 D DE A0018445D DE 923859 C DE923859 C DE 923859C
Authority
DE
Germany
Prior art keywords
fault location
capacitors
quick determination
electrical wiring
error
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
Application number
DEA18445D
Other languages
German (de)
Inventor
Johann Reppisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG AG filed Critical AEG AG
Priority to DEA18445D priority Critical patent/DE923859C/en
Application granted granted Critical
Publication of DE923859C publication Critical patent/DE923859C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02Details
    • H02H3/04Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/042Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)

Description

In elektrischen Leitungsanlagen werden zum Schutze von Leitungen und Anlagen Schutzrelais benutzt, welche in bestimmten Entfernungen längs einer Leitung angeordnet sind. Diese Relais sind in bekannter Weise derart untereinander gestaffelt, daß die dem Fehlerort am nächsten gelegene Relaiseinrichtung sofort, die weiter entfernteren entsprechend gestaffelt ansprechen und erforderlichenfalls den zugehörigen Leitungsabschnitt abschalten. Hierbei wird in jedem Falle der Fehlerort nicht unmittelbar, sondern nur zonenweise festgestellt.In electrical wiring systems are used to protect lines and Plant protection relays are used, which at certain distances along a line are arranged. These relays are staggered one below the other in a known manner, that the relay device closest to the fault location immediately, the next Address more distant ones in a staggered manner and, if necessary, the associated Switch off line section. In any case, the location of the fault is not immediately but only determined in zones.

Es besteht ein Interesse daran, den Fehlerort möglichst genau und direkt zu erfassen, gleichgültig ob er in der Schnellzone oder einer der Staffelzonen, von .der Meßstelle raus gesehen, liegt. Die Schnellzeit der Schutzrelais ist sehr gering und liegt in der Größenordnung von etwa o,i Sekunde, einer Zeit also, während der ein Instrument mit Zeigersystem kaum ansprechen und s.einien Endausschlag erreichen kann. Die Meßgrößen, welche den Fehlerfall darzustellen gestatten., stehen im Normalfalle daher nur für die kurze Zeit vom Auftreten -des Fehlers bis zur Abschaltung der Leitung mittels der Relais, also während der Schnellzeit, des Relais, zur Verfügung. Es kommt deshalb bei einer Schnellfehlerortmeßeinrichtung .darauf an, die Meßgrößen innerhalb einer sehr kurzen Zeit zu erfassen und ihnen entsprechende elektrische Größen zu speichern, so daß .durch bekannte technische Mittel längere Zeit, im Vergleich zur Schnellzeit der Schutzrelais, später die Darstellung des Fehlerfalls beispielsweise durch Kurzgchlußspannung und -strom möglich ist und bei den bekannten Leitungseigenschaften der Fehlerort ermittelt werden kann.There is an interest in locating the fault location as precisely as possible and to be recorded directly, regardless of whether he is in the fast zone or one of the relay zones, Seen from the measuring point, lies. The fast time of the protection relays is very low and is of the order of about o, i second, a time during which hardly respond to an instrument with a pointer system and reach a full deflection can. The measured variables which allow the error case to be represented are in the normal case therefore only for the short time from the occurrence of the error until the shutdown of the Line by means of the relay, i.e. during the high-speed time, the relay is available. It is therefore important in a rapid fault location measuring device, the measured variables within a very short time to grasp and provide them with appropriate electrical To save sizes so that. By known technical means longer time in comparison for the high-speed time of the protective relay, later the display of the error, for example by short-circuit voltage and current is possible and with the known line properties the location of the fault can be determined.

Erfindungsgemäß erfolgt die Speicherung der für die Fehlerortbestimmung maßgebenden Größen, hier nämlich Fehlerspannung und Fehlerstrom, durch Aufladung von Kondensatoren bekannter Größeund Eigenschaften; diese Kondensatoren sind den Spannungs- und Strompfaden der Meßwandler, welche die Verbindung zwischen Leitung und Schutzrelrais sowie auch mit der Schnel.lfehlerortmeßeinrichtung hier beschriebener Art herstellen, zugeordnet. Mit der Anregung der Schutzrelais erfolgt auch diejenige der Fehlerortmeß-einrächtung; gleichzeitig mit Auslösung der Schutzrelais erfolgt die Abtrennung dieser Kondensatoren von, den Stromkreisen, über die ihre Aufladung erfolgt äst. Die Spannung bzw. Ladung, welche diese Kondenr satoren besitzen, ist entweder proportional oder in bekannter gesetzmäßiger Abhängigkeit von den .sie hervorrufenden Fehlergrößen (Kurzschlußspannung und -strom).According to the invention, the storage of the error location takes place decisive variables, here namely fault voltage and fault current, due to charging of capacitors of known size and properties; these capacitors are the Voltage and current paths of the transducers, which make the connection between the line and protective relay as well as with the Schnel.l Fehlerortmeßeinrichtung described here Produce type, assigned. When the protective relay is activated, this also occurs the fault location measuring device; takes place at the same time as the protective relay is triggered the separation of these capacitors from the circuits through which they are charged takes place. The voltage or charge that these capacitors have is either proportionally or with a known lawful dependence on the .sie causing error variables (short-circuit voltage and current).

In der Zeichnung ist in Fig. i und 2 der Spannungs- bzw. Strompfad eines Ausführungsbeispiels einer Fehlerortmeßeinrächtung nach der Erfindung dargestellt. Die einander entsprechenden Teile in den Sp.annungs- bzw. Strompfaden sind mit den gleichen Bezugszeichen versehen, und zur Unterscheidung sind die Bezugszeichen für die Teile des Strompfades mit einem Indexstrich versehen.In the drawing, the voltage or current path is shown in FIGS. I and 2 an embodiment of an Fehlerortmeßeinrächtung shown according to the invention. The corresponding parts in the voltage or current paths are with the The same reference numerals are provided, and the reference numerals for are used to distinguish them mark the parts of the current path with an index line.

Über die Widerstände r, 2 wird die Spannung U und ebenso über die Widerstände i', 2' der vom Strom I an dem Nebenschlußwiderstand io hervorgerufene Spannungsabfall geteilt. Die Teilrspannungen werden den aus den Gleichrichtern 3 bzw. 3' und Ladekondensatoren 6 bzw. 6' bestehenden Kreisen zugeführt.Via the resistors r, 2, the voltage U and also via the Resistances i ', 2' that caused by the current I at the shunt resistor io Voltage drop shared. The partial voltages are those from the rectifiers 3 or 3 'and charging capacitors 6 and 6' existing circuits.

Zwischen den Gleichrichtern 3 bzw. 3' und den Ladekondensatoren 6 bzw. 6' liegen die Relaiskontakte 5 bzw. 5', die vom Relais q. betätigt werden,. Dieses Relais q. schaltet die Kondensatoren 6 bzw. 6' von den vorgeordneten Stromkreisen mit den Gleichrichtern 3 bzw. 3' mit Ablauf der Schnellzeit ab. Die Spannung der Kondensatoren 6 bzw. 6' wird durch das aus der Elektronenröhre 7 bzw. 7' und dem Anzeigeinstrument 8 bzw. 8' bestehenden Röhrenvoltmeter gemessen.Between the rectifiers 3 or 3 'and the charging capacitors 6 or 6 'are the relay contacts 5 and 5', which are from the relay q. be operated. This relay q. switches the capacitors 6 or 6 'from the upstream circuits with the rectifiers 3 or 3 'with the expiry of the fast time. The tension of the Capacitors 6 and 6 'is made up of the electron tube 7 or 7' and the Measuring instrument 8 or 8 'existing tube voltmeter.

Die erfindungsgemäße Einrichtung kann sowohl für Wechselstrom- als auch für Gleichstromleitungen angewendet werden; beiden letzteren entfallen .dann die Gleichrichter 3 und 3'.The device according to the invention can be used for both AC as can also be used for direct current lines; the latter two are omitted the rectifiers 3 and 3 '.

Claims (2)

PATENTANSPRÜCHE: i. Einrichtung zur schnellen Bestimmung des Fehlerorters in elektrischen Leitungsanlagen, dadurch gekennzeichnet, daß Kondensatoren elektrische Ladungen zugeführt werden, welche den Fehlergrößen Strom und Spannung der fehlerbehafteten Leitung proportional sind oder in bekannter Beziehung mit den Fehlergrößen stehen. PATENT CLAIMS: i. Device for quick determination of the fault locator in electrical line systems, characterized in that capacitors are electrical Charges are supplied, which correspond to the error variables current and voltage of the error-prone Line are proportional or have a known relationship with the error magnitudes. 2. Einrichtung nach Anspruch i, d-wdurch gekennzeichnet, daß die Kondensatoren nach kurzer Zeit von ihren Speisestromkreisen abgeschaltet werden, spätestens gleichzeitig mit .der Abschaltung der fehlerbehafteten Leitung.2. Device according to claim i, d-w characterized in that the capacitors according to be switched off from their supply circuits for a short time, at the latest at the same time with .the shutdown of the faulty line.
DEA18445D 1940-01-04 1940-01-04 Device for quick determination of the fault location in electrical wiring systems Expired DE923859C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA18445D DE923859C (en) 1940-01-04 1940-01-04 Device for quick determination of the fault location in electrical wiring systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA18445D DE923859C (en) 1940-01-04 1940-01-04 Device for quick determination of the fault location in electrical wiring systems

Publications (1)

Publication Number Publication Date
DE923859C true DE923859C (en) 1955-02-21

Family

ID=6924171

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA18445D Expired DE923859C (en) 1940-01-04 1940-01-04 Device for quick determination of the fault location in electrical wiring systems

Country Status (1)

Country Link
DE (1) DE923859C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967448C (en) * 1951-03-31 1957-11-14 Siemens Ag Device for measuring the fault location distance in the event of short-circuiting of lines
DE1027789B (en) * 1956-09-28 1958-04-10 Siemens Ag Procedure for measuring the distance to faults in the event of line short circuits
DE1113984B (en) * 1959-06-20 1961-09-21 Verbundnetz Ost Veb Method and device for the metrological investigation of abnormal operating conditions in electrical energy supply networks
DE1239399B (en) * 1960-09-16 1967-04-27 Bbc Brown Boveri & Cie Circuit arrangement for measuring and storing the value of the quotient of two direct voltages present at a determinable point in time

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967448C (en) * 1951-03-31 1957-11-14 Siemens Ag Device for measuring the fault location distance in the event of short-circuiting of lines
DE1027789B (en) * 1956-09-28 1958-04-10 Siemens Ag Procedure for measuring the distance to faults in the event of line short circuits
DE1113984B (en) * 1959-06-20 1961-09-21 Verbundnetz Ost Veb Method and device for the metrological investigation of abnormal operating conditions in electrical energy supply networks
DE1239399B (en) * 1960-09-16 1967-04-27 Bbc Brown Boveri & Cie Circuit arrangement for measuring and storing the value of the quotient of two direct voltages present at a determinable point in time

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