DE3246385A1 - Circuit for monitoring the switching function of semiconductor switches - Google Patents

Circuit for monitoring the switching function of semiconductor switches

Info

Publication number
DE3246385A1
DE3246385A1 DE19823246385 DE3246385A DE3246385A1 DE 3246385 A1 DE3246385 A1 DE 3246385A1 DE 19823246385 DE19823246385 DE 19823246385 DE 3246385 A DE3246385 A DE 3246385A DE 3246385 A1 DE3246385 A1 DE 3246385A1
Authority
DE
Germany
Prior art keywords
semiconductor switches
switching function
circuit
monitoring
relay
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.)
Granted
Application number
DE19823246385
Other languages
German (de)
Other versions
DE3246385C2 (en
Inventor
Hubert 5628 Heiligenhaus Röllecke
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun 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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Priority to DE19823246385 priority Critical patent/DE3246385A1/en
Publication of DE3246385A1 publication Critical patent/DE3246385A1/en
Application granted granted Critical
Publication of DE3246385C2 publication Critical patent/DE3246385C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/18—Modifications for indicating state of switch

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Electronic Switches (AREA)

Abstract

A disadvantageous factor in protective relays is when these cause mistripping due to a defective component. The object of the invention is to specify a circuit for monitoring the switching function of semiconductor switches which operate an auxiliary relay. It is proposed to connect the divider tap of a high-resistance voltage divider to the common junction of the semiconductor switches. A subsequent window discriminator with display element outputs a continuous signal when the switching function of a semiconductor switch is disturbed.

Description

Schaltung zur tberwachung der Schaltfunktion von Halb-Circuit for monitoring the switching function of half

leiterschaltern l Die Erfindung betrifft eine Schaltung zur Überwachung der Schaltfunktion von Halbleiterschatern, die ein Hilfsrelais betätigen. Bei Schutzrelais ist es nachteilig, wenn diese, insbesondere beim Einsatz in Hochspannungsnetzen, eine Fehlabschaltung verursachen, die auf ein defektes Bauelement zurückzuführen ist. In der Praxis veranlaßt eine derartige, als Überfunktion eines Schutzrelais bezeichnete Störung häufig weitreichende Netz-Abschaltungen.conductor switches l The invention relates to a circuit for monitoring the switching function of semiconductor shutters that actuate an auxiliary relay. With protection relay it is disadvantageous if these, especially when used in high-voltage networks, cause a faulty shutdown, which can be attributed to a defective component is. In practice, this causes an overfunction of a protective relay The designated malfunction often involves extensive network shutdowns.

Demgegenüber wird bei einer Unterfunktion, also beim Ausbleiben einer Netz-Abschaltung, der Schutz vom übergeordneten Schutzrelais durchgeführt, so daß über die Staffelung der Netzschutz gewährleistet bleibt.In contrast, if there is a subfunction, i.e. if there is no Mains disconnection, the protection carried out by the higher-level protective relay, so that The grid protection is guaranteed via the staggering.

Ausgehend von einer Schaltung der eingangs genannten Art besteht die Aufgabe der Erfindung darin, Überfunktionen von Schutzrelais zu verhindern und zu signalisieren. Die Aufgabe ist mit den kennzeichnenden Merkmalen des Anspruches 1 geldst. Anhand eines schematisch dargestellten Ausführungsbeispieles wird die Erfindung näher erläutert.Based on a circuit of the type mentioned, there is The object of the invention is to prevent and to prevent overfunction of protective relays signal. The task is with the characterizing features of the claim 1 money Using a schematically illustrated embodiment, the Invention explained in more detail.

Die Figur zeigt das Blockschaltbild eines Überstromzeitrelais. Es besteht aus den Baugruppen Anregeglieder 1 und 2, Zeitglied 3, Halbleiterschalter 4 und 5 und dem Hilfs- relais 6. Das ttberstromzeitrelais ist teilweise redundant aufgebaut. So bewirkt das Anregeglied 2, daß das Hilfsrelais 6 nur anspricht, wenn die beiden in Reihe liegenden Halbleiterschalter 4 und 5 gleichzeitig in den leitenden Zustand geschaltet sind. Damit wird verhindert, daß bei einer Überfunktion der Baugruppen 1 2 und 3 eine Fehlabschaltung veranlaßt wird, Eine Meldung des Fehlverhaltens erfolgt jedoch noch nicht. Unter Überfunktion wird in diesem Ausführungsbeispiel die Erregung des Hilfsrelais 6 als Folge eines Kurzschlusses in den Halbleiterschaltern verstanden.The figure shows the block diagram of an overcurrent time relay. It consists of the modules excitation elements 1 and 2, timing element 3, semiconductor switch 4 and 5 and the auxiliary relay 6. The overcurrent time relay is partial built redundantly. The excitation element 2 has the effect that the auxiliary relay 6 only responds when the two series semiconductor switches 4 and 5 are simultaneously in the conductive state are switched. This prevents an overfunction the modules 1 2 and 3 cause a faulty shutdown, a message of the faulty behavior does not take place yet. In this exemplary embodiment, hyperfunction the excitation of the auxiliary relay 6 as a result of a short circuit in the semiconductor switches Understood.

Die Überwachung und Meldung Ubernimmt die nachfolgende Schaltung: Zwei Widerstände 7 und 8, die hochohmig gegenüber dem Widerstand des Hilfsrelais 6 sind, sind an dem Verbindungspunkt 14 der Halbleiterschalter 4, 5 angeschlossen.The following switching takes over the monitoring and reporting: Two resistors 7 and 8, which have a high resistance to the resistance of the auxiliary relay 6, the semiconductor switches 4, 5 are connected to the connection point 14.

Wird einer der beiden Halbleiterschalter oder beide gleichzeitig leitend, so wird die Spannung U an dem Teilerabgriff 11 verstimmt. Diese Teilerspannung U überwacht der Pensteraiskriminator 9. Steigt oder fällt die Spannung U huber den vorgebbaren Spannungsbereich des Diskriminators hinaus, so spricht dieser an und ein nachgeschaltetes Anzeigeelement 10 signalisiert dieses Verhalten. Da auch bei einer normalen Anregung des Uberstromzeitrelais für die Laufzeit des Zeitgliedes 3 bis zur Stromabschaltung durch das Hilfsrelais 6 der Fensterdiskriminator 9 anspricht, kann über einen Zeitbaustein 12, der vor der ernsignalisierung mittels Melderelais 13 geschaltet ist und dessen Verzögerungszeit geringfügig über der Laufzeit des Zeitgliedes 3 liegt, eine vorzeitige Pernsignalisierung verhindert werden.If one of the two semiconductor switches or both are conductive at the same time, so the voltage U at the divider tap 11 is detuned. This divider voltage U monitors the Pensteraiskriminator 9. If the voltage U rises or falls above the predeterminable voltage range of the discriminator, it responds to and a downstream display element 10 signals this behavior. There too with normal excitation of the overcurrent relay for the duration of the timer 3 until the power is switched off by the auxiliary relay 6, the window discriminator 9 responds, can via a time module 12, which is set before the renewed signaling by means of a signal relay 13 is switched and its delay time is slightly longer than the duration of the Timing element 3 lies, premature pern signaling can be prevented.

Das Anzeigeelement 10 erfüllt somit zwei Funktionen: erstens signalisiert es die Anregung des Überstromzeitre- lais für die Laufzeit des Relais und zweitens wird bei einem defekten Halbleiterschalter ein Dauersignal gegeben. Wenn also in der Warte das Melderelais 13 einen Schutzrelaisfehler meldet, 80 erkennt man das defekte Überstromzeitrelais vor Ort an dem eingeschalteten Anzeigeelement 10. In der Praxis können mehrere Schutzrelais auf einen gemeinsamen Zeitbaustein 12 mit einem Melderelais 13 arbeiten.The display element 10 thus fulfills two functions: firstly, it signals it is the excitation of the overcurrent lais for the runtime of the relay and secondly, a continuous signal is given in the event of a defective semiconductor switch. So if the signal relay 13 reports a protective relay error in the control room, 80 detects it the defective overcurrent relay on site at the switched-on display element 10. In practice, several protective relays can use a common time module 12 work with a signal relay 13.

Claims (1)

PatentansprUche 0, ) Schaltung zur Überwachung der Schaltfunktion von Ralbleiterschaltern, die ein Hilfsrelais (6) betätigen, gekennzeichnet durch die folgenden Merkmale: a) zwei Widerstände (7, 8), die hochohmig gegenüber der Hilfsrelaiswicklung sind, bilden einen Spannungsteiler, dessen Teilerabgriff (11) mit dem Eingang eines Fensterdiskriminators (9) verbunden ist; b) der gemeinsame Verbindungspunkt (14) zweier in Reihe geschalteter Halbleiterschalter (4, 5) ist mit dem Teilerabgriff (11) verbunden und c) dem Fensterdiskriminator ist ein Anzeigeelement (10) nachgeschaltet, das aufleuchtet, wenn die Eingangsspannung (U) den vorgegebenen Spannungsbereich des Fensterdiskriminators über- oder unterschreitet.Patent claims 0,) Circuit for monitoring the switching function of semiconductor switches that actuate an auxiliary relay (6), characterized by the following features: a) two resistors (7, 8) which have high resistance to the Auxiliary relay winding form a voltage divider whose divider tap (11) is connected to the input of a window discriminator (9); b) the common Connection point (14) of two series-connected semiconductor switches (4, 5) is connected to the divider tap (11) and c) the window discriminator is a display element (10), which lights up when the input voltage (U) exceeds the specified value The voltage range of the window discriminator is exceeded or not reached. 2,) Schaltung nach Anspruch 1, dadurch gekennzeichnet, daß der Signalzustand des Anzeigeelementes zeitverzögert (Zeitbaustein 12) ein Melderelais (17) betätigt.2,) Circuit according to claim 1, characterized in that the signal state of the display element is actuated with a time delay (time module 12) a signal relay (17).
DE19823246385 1982-12-15 1982-12-15 Circuit for monitoring the switching function of semiconductor switches Granted DE3246385A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823246385 DE3246385A1 (en) 1982-12-15 1982-12-15 Circuit for monitoring the switching function of semiconductor switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823246385 DE3246385A1 (en) 1982-12-15 1982-12-15 Circuit for monitoring the switching function of semiconductor switches

Publications (2)

Publication Number Publication Date
DE3246385A1 true DE3246385A1 (en) 1984-06-20
DE3246385C2 DE3246385C2 (en) 1988-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823246385 Granted DE3246385A1 (en) 1982-12-15 1982-12-15 Circuit for monitoring the switching function of semiconductor switches

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DE (1) DE3246385A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835303A1 (en) * 1988-10-17 1990-04-19 Hartmann & Braun Ag Circuit for the monitoring of analog input circuits for hyperfunctioning
FR2650236A1 (en) * 1989-07-28 1991-02-01 Teves Gmbh Alfred CIRCUIT CONFIGURATION FOR CONTROLLING A SAFETY RELAY
DE4441581A1 (en) * 1994-10-17 1996-04-25 Landis & Gyr Tech Innovat Control device for actuating switching devices
FR2855682A1 (en) * 2003-06-02 2004-12-03 Honeywell SECURITY STATIC OUTPUT STAGE
DE102010000728A1 (en) * 2010-01-07 2011-07-14 DBK David + Baader GmbH, 76870 Electronic driver for switching and controlling power consumption of vehicle e.g. car, performs switching between MOSFET switch devices with respect to signals from controller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539915B4 (en) * 1995-10-27 2007-06-28 Elan Schaltelemente Gmbh & Co. Kg Method for monitoring such as standstill and / or Einrichtdrehzahlüberwachung a drive, in particular highly dynamic servo drive, and load relay in particular for use in a corresponding method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2356854B2 (en) * 1973-11-14 1975-09-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electronic switch
DE2213921C2 (en) * 1972-03-22 1977-09-08 Siemens AG, 1000 Berlin und 8000 München Electronic short-circuit-proof switch system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2213921C2 (en) * 1972-03-22 1977-09-08 Siemens AG, 1000 Berlin und 8000 München Electronic short-circuit-proof switch system
DE2356854B2 (en) * 1973-11-14 1975-09-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electronic switch

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3835303A1 (en) * 1988-10-17 1990-04-19 Hartmann & Braun Ag Circuit for the monitoring of analog input circuits for hyperfunctioning
FR2650236A1 (en) * 1989-07-28 1991-02-01 Teves Gmbh Alfred CIRCUIT CONFIGURATION FOR CONTROLLING A SAFETY RELAY
US5309314A (en) * 1989-07-28 1994-05-03 Alfred Teves Gmbh Circuit configuration for actuating a safety relay
DE4441581A1 (en) * 1994-10-17 1996-04-25 Landis & Gyr Tech Innovat Control device for actuating switching devices
DE4441581B4 (en) * 1994-10-17 2004-02-05 Landis & Gyr Technology Innovation Ag Control device for actuating switching devices
FR2855682A1 (en) * 2003-06-02 2004-12-03 Honeywell SECURITY STATIC OUTPUT STAGE
WO2004109918A1 (en) * 2003-06-02 2004-12-16 Honeywell Static secure output stage
DE102010000728A1 (en) * 2010-01-07 2011-07-14 DBK David + Baader GmbH, 76870 Electronic driver for switching and controlling power consumption of vehicle e.g. car, performs switching between MOSFET switch devices with respect to signals from controller
DE102010000728A8 (en) * 2010-01-07 2012-03-01 Dbk David + Baader Gmbh Electronic control device

Also Published As

Publication number Publication date
DE3246385C2 (en) 1988-12-15

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