DE956609C - Fast-acting distance protection arrangement for three-phase networks - Google Patents

Fast-acting distance protection arrangement for three-phase networks

Info

Publication number
DE956609C
DE956609C DEL11130A DEL0011130A DE956609C DE 956609 C DE956609 C DE 956609C DE L11130 A DEL11130 A DE L11130A DE L0011130 A DEL0011130 A DE L0011130A DE 956609 C DE956609 C DE 956609C
Authority
DE
Germany
Prior art keywords
conductor
fast
protection arrangement
distance protection
acting distance
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
DEL11130A
Other languages
German (de)
Inventor
Heinz Gutmann
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL11130A priority Critical patent/DE956609C/en
Application granted granted Critical
Publication of DE956609C publication Critical patent/DE956609C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0038—Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number
    • H02H1/0046—Commutating the detecting means in dependance of the fault, e.g. for reducing their number

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Description

Schnellwirkende Distanzschutzanordnung für Drehstromnetze Es ist eine schnellwirkende Distanzschutzanordnung für Drehstromnetze mit je einem Relais pro Phasenleiter bekannt, bei der die Meßkreise der Relais so geschaltet sind, daß ständig die drei Schleifen Leiter gegen Erde überwacht werden und nur beim zusätzlichen Auftreten von Fehlerkriterien in einem oder mehreren Nachbarleitern eine Umschaltung auf die Meßgrößen für die Schleife Leiter/Leiber erfolgt. Hierdurch wird erreicht, daß die weitaus am häufigsten vorkommenden einpoligen Erdschlüsse mit den kürzestmöglichen Auslösezeiten abgeschaltet werden. Durch die bei Auftreten mehrphasiger Anregebedingungen erfolgende Umschaltung der Meßsysteme auf die entsprechenden verketteten Spannungen und Ströme werden auch zwei- oder dreipolige Fehler einwandfrei ausgemessen, allerdings mit einer etwas größeren Auslösezeit, die durch die notwendige Umschaltung der Meßkreise bedingt ist.Fast-acting distance protection arrangement for three-phase networks It is a Fast-acting distance protection arrangement for three-phase networks with one relay per Phase conductor known, in which the measuring circuits of the relay are switched so that constantly the three loops conductors to earth are monitored and only when additional If failure criteria occur in one or more neighboring conductors, a switchover occurs takes place on the measured quantities for the loop conductor / body. This achieves that by far the most common single-pole earth faults with the shortest possible Tripping times can be switched off. By the occurrence of multi-phase pickup conditions subsequent switchover of the measuring systems to the corresponding linked voltages and currents, two- or three-pole faults are also measured correctly, however with a slightly longer tripping time, which is caused by the necessary switching of the measuring circuits is conditional.

Die Erfindung bezweckt nun, bei zwelipoliigen Fehlern mit Erdbeteiligung diese etwas erhöhte Auslösezeit zu vermeiden, was erfindungsgemäß dadurch erreicht wird, daß auch im Unsymmetrie-Stromkreis der Stromwandler ein Anregegliied (Unsymmetrierelais) vorgesehen ist, das bei seinem _ Ansprechen beim Auftreten von Summenstrom entweder direkt oder über ein nachgeschaltetes Hilfsrelais eine Umschaltung der Meßglieder auf verkettete Meßwerte verhindert. Es werden dann also auch zweipolige Fehler mit Erdberührung in der schnellstmöglichen Weise erfaßt.The invention now aims at bipolar errors with earth involvement to avoid this somewhat increased release time, which is achieved according to the invention is that the current transformer is also a stimulus in the asymmetry circuit (Unbalance relay) it is provided that either when it responds when a cumulative current occurs the measuring elements can be switched over directly or via a downstream auxiliary relay prevents chained measured values. So there are also two-pole errors with Earth contact detected in the fastest possible way.

Ein weiterer Vorteil dieser Erfindung besteht darin, daß einpolige 'Erdschlüsse auch beim Auftreten von Überstrom in den gesunden Leitern (Bauchsches Pardoxon) auf alle Fälle einwandfrei erfaßt werden. Ohne die erfindungsgemäße Anordnung würde in diesen Fällen eine Umschaltung auf verkettete Werte erfolgen, was zu falschen Impedanzmessungen führen würde.Another advantage of this invention is that unipolar '' Earth faults also when an overcurrent occurs in the healthy conductors (Bauchsches Pardoxon) must be recorded properly in any case. Without the arrangement according to the invention In these cases there would be a switch to chained values, which would lead to incorrect values Impedance measurements would result.

Claims (1)

PATENTANSPRUCH: Schnellwirkende Distanzschutzanordnung für Drehstromnetze mit je einem Relais pro Phasenleiter, bei der die Meßkreise der Relais so angeordnet sind, daß ständig die Schleifen Leiter/Erde überwacht werden und daß nur beim zusätzlichen Auftreten von Fehlerkriterien, in einem oder mehreren Nachbarleitern eine Umschaltung auf die Meßgrößen für die Schleife Leiter/Leiter erfolgt, dadurch gekennzeichnet, daß beim Auftreten von Summenstrom mittels eines Unsymmetrierelais eine Umschaltung der Meßkreise auf die Schleife Leiter/Leiter verhindert wird.PATENT CLAIM: Fast-acting distance protection arrangement for three-phase networks with one relay per phase conductor, in which the measuring circuits of the relays are arranged in this way are that the loops conductor / earth are constantly monitored and that only when additional Occurrence of error criteria, a switchover in one or more neighboring conductors on the measured variables for the conductor / conductor loop, characterized in that that when a total current occurs, a switch is made by means of an unbalance relay the measuring circuits on the loop conductor / conductor is prevented.
DEL11130A 1951-12-21 1951-12-21 Fast-acting distance protection arrangement for three-phase networks Expired DE956609C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL11130A DE956609C (en) 1951-12-21 1951-12-21 Fast-acting distance protection arrangement for three-phase networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL11130A DE956609C (en) 1951-12-21 1951-12-21 Fast-acting distance protection arrangement for three-phase networks

Publications (1)

Publication Number Publication Date
DE956609C true DE956609C (en) 1957-01-24

Family

ID=7258728

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL11130A Expired DE956609C (en) 1951-12-21 1951-12-21 Fast-acting distance protection arrangement for three-phase networks

Country Status (1)

Country Link
DE (1) DE956609C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012059136A1 (en) * 2010-11-05 2012-05-10 Siemens Aktiengesellschaft Monitoring a power supply line supplied at one end for earth faults

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012059136A1 (en) * 2010-11-05 2012-05-10 Siemens Aktiengesellschaft Monitoring a power supply line supplied at one end for earth faults
CN103261900A (en) * 2010-11-05 2013-08-21 西门子公司 Monitoring a power supply line supplied at one end for earth faults
CN103261900B (en) * 2010-11-05 2015-08-05 西门子公司 The method that the ground short circuit of the supply lines of the one-sided power supply of three phase supply net is monitored and electrical protection apparatus

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