DE2719212A1 - Test control circuit monitoring electrical circuit contact states - uses current supply device in series with each contact - Google Patents

Test control circuit monitoring electrical circuit contact states - uses current supply device in series with each contact

Info

Publication number
DE2719212A1
DE2719212A1 DE19772719212 DE2719212A DE2719212A1 DE 2719212 A1 DE2719212 A1 DE 2719212A1 DE 19772719212 DE19772719212 DE 19772719212 DE 2719212 A DE2719212 A DE 2719212A DE 2719212 A1 DE2719212 A1 DE 2719212A1
Authority
DE
Germany
Prior art keywords
contact
supply device
current supply
switching
series
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
DE19772719212
Other languages
German (de)
Other versions
DE2719212C3 (en
DE2719212B2 (en
Inventor
Hans Dieter Dipl Allmendinger
Kurt Dipl Ing Smutny
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DE2719212A priority Critical patent/DE2719212C3/en
Priority to NL7801790A priority patent/NL7801790A/en
Priority to NO780552A priority patent/NO146341C/en
Priority to AT203378A priority patent/AT353343B/en
Priority to IT22520/78A priority patent/IT1094447B/en
Priority to BE187111A priority patent/BE866387A/en
Priority to IE848/78A priority patent/IE46745B1/en
Publication of DE2719212A1 publication Critical patent/DE2719212A1/en
Publication of DE2719212B2 publication Critical patent/DE2719212B2/en
Application granted granted Critical
Publication of DE2719212C3 publication Critical patent/DE2719212C3/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Static Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Relay Circuits (AREA)

Abstract

The control circuit is designed to test the contact states of relay contacts connected to an electrical load. A converter element is associated with each contact so as to obtain by force an appropriate electrical load for the contact in question. The converter element is an intermittent operating current supply device. This device which is in series with the contact taps a large part of the current flowing through the contacts and directs it to an exterior circuit. The current supply device is a regulator which increases the output voltage. The power passing through the contact is fed by the current device to the current supply source and or to a separate circuit.

Description

tberwachungsschaltungmonitoring circuit

Die Erfindung betrifft eine Überwachungsschaltung entsprechend dem Oberbegriff des Hauptanspruches.The invention relates to a monitoring circuit according to the Preamble to the main claim.

Bei solchen Uberwachungsschaltungen, wie sie insbesondere bei Meldungseingaben von Fernwirkgeräten angewendet werden, werden z.B. für die abzufragenden Hilfsschalterkontakte von Lastschaltern als Umsetzelemente Relais verwendet, deren Relaiswicklung eine ausreichende Belastung der Hilfsschalterkontakte bildet, die zu Lichtbögen beim Öffnen führt und damit ein Freimachen der Kontaktteile von Schmutz- oder Oxydschichten bewerkstelligt. Die Relaiskontakte selbst können mit kleiner Belastung Meldekreise betätigen. Bei Fernwirkgeräten sind eine Vielzahl abzufragender Hilfsschalterkontakte mit einer entsprechenden Vielzahl von Umsetzelementen auf engen Raum (steckbare Schaltplatinen od.dgl.) in Schaltschränken untergebracht. Da Relaiswicklungen ebenso wie auch als Umsetzelemente verwendete Widerstände die über die Hilfsschalterkontakte zu führende Leistung in Wärme umsetzen, sind zur Vermeidung schädlicher Temperaturen aufwendige Kühlvorrichtungen erforderlich. Um dies zu vermeiden, hat man die elektrische Belastung der Hilfsschalterkontakte herabzusetzen versucht, was die Zuverlässigkeit der tberwachung stark gefährdet, oder man hat die Umsetzelemente räumlich weiter voneinander angeordnet, was zu größeren ausgedehnteren Meldeanlagen (größere Schaltschränke, weiterer Abstand der Schaltelemente) führt.In such monitoring circuits, as they are in particular when entering messages are used by telecontrol devices, e.g. for the auxiliary switch contacts to be queried used by load switches as relays converting elements, the relay winding of which a sufficient load on the auxiliary switch contacts, which can lead to arcing Opening leads and thus clearing the contact parts of layers of dirt or oxide accomplished. The relay contacts themselves can have signaling circuits with a small load actuate. In the case of telecontrol devices, there are a large number of auxiliary switch contacts to be queried with a corresponding number of moving elements in tight spaces (pluggable Circuit boards or the like.) Housed in control cabinets. Since relay windings as well as well as resistors used as conversion elements via the auxiliary switch contacts To convert the power to be conducted into heat, are to avoid harmful temperatures complex cooling devices required. To avoid this, one has the electric Attempts to reduce the load on the auxiliary switch contacts, which increases the reliability the monitoring is strongly endangered, or the moving elements are spatially further away arranged from each other, resulting in larger, more extensive signaling systems (larger control cabinets, further distance between the switching elements) leads.

Der Erfindung liegt die Aufgabe zugrunde, eine räumlich kompakte Überwachungsschaltung der eingangs genannten Art zu schaffen, bei der trotz ausreichend hoher Belastung der zu überwachenden Schaltkontakte die Wärmeerzeugung in den Umsetzelementen wesentlich niedriger gehalten wird und eine Stromrücklieferung in den äußeren Stromkreis erfolgt.The invention is based on the object of a spatially compact monitoring circuit to create the type mentioned, in spite of a sufficiently high load of the switching contacts to be monitored, the heat generation in the relocating elements is essential is kept lower and a current is returned to the external circuit.

Die Lösung der gestellten Aufgabe gelingt mit den kennzeichnenden Merkmalen des Hauptanspruches.The solution to the task at hand succeeds with the characteristic Features of the main claim.

Besonders vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand von Unteransprüchen.Particularly advantageous embodiments of the invention are the subject of subclaims.

Die Erfindung ist für ein Ausführungsbeispiel anhand einer stark vereinfachten Schaltung nachfolgend näher erläutert.The invention is based on a greatly simplified embodiment for an embodiment Circuit explained in more detail below.

An eine mit dem Pluspol einer Batterie Q als Gleichstromquelle verbundene Leitung L (Stromschiene) sind eine Vielzahl abzufragender Schaltkontakte, von denen nur zwei Schaltkontakte K1 und K2 gezeigt sind, mit ihrem einen Kontakt angeschlossen. Der jeweils andere Kontakt ist mit dem Eingang einer nach dem Prinzip der geschalteten Stromversorgung arbeitenden Einrichtung (Schaltregler) SE1 bzw. SE2 verbunden, deren Ausgang B mit der Leitung L verbunden ist. Der Eingang A ist im Stromregler SE1, SE2 über die Reihenschaltung einer Drossel Dr mit einer Diode Di mit dem Ausgang B in Verbindung gebracht. Die Klemmen C, D jedes Stromreglers SE1, SE2 usw. sind an den Minuspol der Batterie B und über einen Halbleiterschalter U an die Verbindung der Drossel Dr mit der Diode Di angeschlossen. Der Halbleiterschalter U wird intermittierend von einem Regler R mit eingegebenem Sollwert getaktet, wozu der Regler R seinen Stromistwert vom Ausgang B erhält.To one connected to the positive terminal of a battery Q as a direct current source Line L (busbar) are a large number of switching contacts to be queried, of which only two switching contacts K1 and K2 are shown, with one contact connected. The other contact is connected to the input according to the principle of the switched Power supply working device (switching regulator) SE1 or SE2 connected, their Output B is connected to line L. The input A is in the current controller SE1, SE2 via the series connection of a choke Dr with a diode Di with the output B related. Terminals C, D of each current regulator SE1, SE2 etc. are to the negative pole of battery B and via a semiconductor switch U to the connection the choke Dr connected to the diode Di. The semiconductor switch U becomes intermittent clocked by a controller R with an entered setpoint, for which the controller R is its Receives actual current value from output B.

Statt der beschriebenen Art eines Stromreglers können auch andere an sich bekannte Stromregler verwendet werden, vorzugsweise solche, die ihre Ausgangsspannung gegenüber ihrer Eingangsspannung erhöhen.Instead of the type of current regulator described, other Current regulators known per se are used, preferably those that control their output voltage increase compared to their input voltage.

Da in solchen Stromreglern nur ein Bruchteil der über die Schaltkontakte geführten Leistung in Wärme umgesetzt werden kann und der überwiegende Leistungsanteil auf die Leitung L zurückgeliefert wird, können die Umsetzelemente in großer Zahl räumlich eng beieinander angeordnet ohne gesonderte aufwendige Kühlvorrichtungen sicher betrieben werden.Because in such current regulators only a fraction of the over the switching contacts Led power can be converted into heat and the vast majority of power is returned to the line L, the conversion elements can be in large numbers Spatially arranged close together without separate expensive cooling devices be operated safely.

Anstelle einer Gleichstromquelle Q kann auch eine Wechselstromquelle bei Verwendung entsprechend aufgebauter Schaltregler vorgesehen sein. Auch ist die Rücklieferung des Stromes auf die einspeisende Gleich- oder Wechselstromquelle nicht notwendig oder wesentlich. So kann der Strom am Ausgang des Schaltreglers auch auf einen gesonderten Stromkreis, z.B. den Speisestromkreis für nicht dargestellte Steuerelemente, Meßgeräte od.dgl. geführt werden, wenn die Leitung L zwischen dem Ausgang und dem Eingang zum Schaltkontakt K1 getrennt ist.Instead of a direct current source Q, an alternating current source can also be used be provided when using appropriately constructed switching regulators. Also is that No return of the current to the direct or alternating current source necessary or essential. So the current at the output of the switching regulator can also increase a separate circuit, e.g. the supply circuit for control elements not shown, Measuring devices or the like. be performed when the line L between the output and the Input to switching contact K1 is separated.

3 Patentansprüche 1 Figur3 claims 1 figure

Claims (3)

Patentansprüche 1.)Überwachungsschaltung zum Abfragen von Schaltzuständen von seele elektrische Belastung fordernden Schaltkontakten in Stromkreisen unter Verwendung eines jedem Schaltkontakt zugeordneten Umsetzelementes zur Erzwingung einer entsprechenden elektrischen Belastung des betreffenden Schaltkontaktes, d a d u r c h g e k e n n z e i c h n e t , daß als Umsetzelement eine intermittierend arbeitende Stromversorgungseinrichtung vorgesehen ist, die in Reihe mit dem Schaltkontakt liegend die über den Schaltkontakt fließende Leistung größtenteils auf einen äußeren Stromkreis abführt.Claims 1.) Monitoring circuit for querying switching states from seele electrical load demanding switching contacts in circuits below Use of a conversion element assigned to each switching contact for enforcement a corresponding electrical load on the relevant switch contact, d a d u r c h g e k e n n n z e i c h n e t that as a conversion element an intermittent working power supply device is provided, which is in series with the switching contact most of the power flowing through the switch contact lies on an external one Circuit dissipates. 2. Schaltung nach Anspruch 1, dadurch gekennzeichnet, daß als Stromversorgungseinrichtung ein ausgangsspannungserhöhender Schaltregler vorgesehen ist.2. Circuit according to claim 1, characterized in that as a power supply device an output voltage increasing switching regulator is provided. 3. Schaltung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die über den Schaltkontakt fließende Leistung von der Stromversorgungseinrichtung auf die speisende Stromquelle und/oder einen gesonderten Stromkreis geführt ist.3. A circuit according to claim 1 or 2, characterized in that the Power flowing through the switching contact from the power supply device the feeding power source and / or a separate circuit is performed.
DE2719212A 1977-04-29 1977-04-29 DC-fed monitoring circuit for switching contacts Expired DE2719212C3 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE2719212A DE2719212C3 (en) 1977-04-29 1977-04-29 DC-fed monitoring circuit for switching contacts
NL7801790A NL7801790A (en) 1977-04-29 1978-02-16 MONITORING CIRCUIT.
NO780552A NO146341C (en) 1977-04-29 1978-02-17 OVERVAAKNINGSKOBLING.
AT203378A AT353343B (en) 1977-04-29 1978-03-22 MONITORING CIRCUIT
IT22520/78A IT1094447B (en) 1977-04-29 1978-04-20 HEAVY LOAD SURVEILLANCE CIRCUIT ON ELECTRIC CONTACTS
BE187111A BE866387A (en) 1977-04-29 1978-04-26 CONTROL CIRCUIT
IE848/78A IE46745B1 (en) 1977-04-29 1978-04-28 Improvements in or relating to monitoring circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2719212A DE2719212C3 (en) 1977-04-29 1977-04-29 DC-fed monitoring circuit for switching contacts

Publications (3)

Publication Number Publication Date
DE2719212A1 true DE2719212A1 (en) 1978-11-09
DE2719212B2 DE2719212B2 (en) 1980-10-16
DE2719212C3 DE2719212C3 (en) 1981-06-25

Family

ID=6007661

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2719212A Expired DE2719212C3 (en) 1977-04-29 1977-04-29 DC-fed monitoring circuit for switching contacts

Country Status (7)

Country Link
AT (1) AT353343B (en)
BE (1) BE866387A (en)
DE (1) DE2719212C3 (en)
IE (1) IE46745B1 (en)
IT (1) IT1094447B (en)
NL (1) NL7801790A (en)
NO (1) NO146341C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383443B (en) * 1985-03-19 1987-07-10 Elin Union Ag CIRCUIT ARRANGEMENT FOR A MICROPROCESSOR-CONTROLLED REMOTE CONTROL SYSTEM

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS ERMITTELT *

Also Published As

Publication number Publication date
NO780552L (en) 1978-10-31
NO146341C (en) 1982-09-08
IE46745B1 (en) 1983-09-07
IE780848L (en) 1978-10-29
NO146341B (en) 1982-06-01
AT353343B (en) 1979-11-12
NL7801790A (en) 1978-10-31
IT1094447B (en) 1985-08-02
DE2719212C3 (en) 1981-06-25
ATA203378A (en) 1979-04-15
DE2719212B2 (en) 1980-10-16
BE866387A (en) 1978-08-14
IT7822520A0 (en) 1978-04-20

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee