[go: up one dir, main page]

DE636620C - Device for measuring, in particular remote measurement of the sum of measured quantities, in which the current strengths corresponding to the individual summands are regulated according to a compensation method - Google Patents

Device for measuring, in particular remote measurement of the sum of measured quantities, in which the current strengths corresponding to the individual summands are regulated according to a compensation method

Info

Publication number
DE636620C
DE636620C DE1930636620D DE636620DD DE636620C DE 636620 C DE636620 C DE 636620C DE 1930636620 D DE1930636620 D DE 1930636620D DE 636620D D DE636620D D DE 636620DD DE 636620 C DE636620 C DE 636620C
Authority
DE
Germany
Prior art keywords
sum
measuring
summands
measured quantities
compensation method
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
DE1930636620D
Other languages
German (de)
Inventor
Dipl-Ing Waldemar Brueckel
Dr-Ing Wilhelm Staeblein
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
Application granted granted Critical
Publication of DE636620C publication Critical patent/DE636620C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R7/00Instruments capable of converting two or more currents or voltages into a single mechanical displacement
    • G01R7/02Instruments capable of converting two or more currents or voltages into a single mechanical displacement for forming a sum or a difference
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Description

Einrichtung zur Messung, insbesondere Fernmessung der Summe von Meßgrößen, bei der den einzelnen Summanden entsprechende Stromstärken nach einem Kompensationsverfahren eingeregelt werden Für die Summierung von Meßgrößen, welche durch Stromstärken dargestellt werden, ist vorgeschlagen worden, sämtliche Summandenströme einem elektrischen Meßwerk zuzuleiten, das mehrere den einzelnen Summanden zugeordnete Meßspulen enthält. Ein. derartiges Spezialinstrument ist jedoch sehr -unbequem zu bauen und besonders kostspielig. Weiterhin ist eine Einrichtung bekannt, bei welcher die einzelnen Summanden durch Widerstände dargestellt werden, die von einem Meßzeiger abgegriffen werden. Die einzelnen Summanden werden durch SßannungsmeBgeräte, die Summen durch ein Strommeßgerät gemessen, das die Summe der durch die Sp,annungsmeßgeräte fließenden Ströme mißt. Bei derartigen Summenschaltungen ist Vorsorge zu treffen, daß alle Gebermeßgeräte für die einzelnen Summanden den gleichen Nennwert der Übertragungsgröße aufweisen. Es sind auch Summierungsschaltungen bekannt, bei denen ebenfalls die Übertragungsströme der einzelnen Summanden das Summeninstrument 'durchfließen und bei denen die übertragungsströme nach einem Kompensationsverfahren eingeregelt werden, so daß die Stromstärken unabhängig von den Leitungswiderständen sind. Auch bei diesen Schaltungen werden im Bedarfsfalle an den Gehermeßgeräten durch Bemessung der Kompensationseinrichtungen die Übertragungsgrößen so eingerichtet, daß ihre Einheiten die für die richtige Summierung erforderlichen gleichen Nennwerte aufweisen. Demgegenüber besteht die Erfindung darin, daß zwecks Vermeidung der an sich unerwünschten Abänderungen auf der Geberseite bei Summierungseinrichtung@en nachdem Kompensationsverfahren auf der Empfangsseite Teilströme von den über die Fernleitung eingeregelten Strömen abgezweigt und über ein gemeinsames Summeninstrument geführt werden, derart, da.ß das Verhältnis der dem Summeninstrument zugeführten Teilströme zu den betregenden Meßwerten für alle Summanden dasselbe ist.Device for measuring, in particular remote measurement of the sum of measured quantities, at the current strengths corresponding to the individual summands according to a compensation method For the summation of measured quantities, which are represented by current intensities It has been proposed that all summand currents be an electrical measuring mechanism to be supplied, which contains several measuring coils assigned to the individual summands. A. However, such a special instrument is very inconvenient to build and particularly expensive. Furthermore, a device is known in which the individual summands through Resistances are shown, which are tapped by a measuring pointer. the individual summands are measured by a voltage measuring device, the sums by an ammeter measured, which measures the sum of the currents flowing through the voltage meters. With such summation circuits, care must be taken to ensure that all encoder measuring devices have the same nominal value of the transfer variable for the individual summands. Summing circuits are also known in which the transmission currents of the individual summands' flow through the summation instrument and in which the transmission currents be regulated according to a compensation process, so that the current strengths are independent of the line resistances. These circuits are also used if necessary the transmission variables on the walking measuring devices by dimensioning the compensation devices set up their units to have the units necessary for proper totalization have the same nominal values. In contrast, the invention is that for the purpose Avoidance of undesirable changes on the encoder side in the case of summing devices after compensation process on the receiving side partial currents from the over the Pipeline regulated currents branched off and via a common sum instrument are performed in such a way that the ratio of the sum instrument fed Partial currents to the relevant measured values is the same for all summands.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es bedeuten i, 2, 3 die zu den Meßstellen führenden Leitungen, q., 5, 6 die Instrumente zur Ablesung der Werbe der einzelnen Summanden, 7 das Summeninstrument,. 8, g, i o Widerstände in den einzelnen Meßkreisen, 11, 12, 13 Widerstände in den Abzweigstromkreisen, 14 eine Batterie. Die Einrichtung arbeitet folgendermaßen: Die Stromstärke in den Kreisen i , 2, 3 wird durch die an den Meßstellen befindlichen Fernxneßgeberapparate zwangsläufig auf einen Wert eingestellt, welcher dem jeweiligen Wertdes Summanden entspricht. Dieser Ström-: wird von .der Batterie i q. geliefert. Derartige, Geberinstrumente sind z. B. diejenigen nach' dem automatischen Kompensationsverfahren. An den Widerständen 8, 9, i o liegt demgemäß eine Spannung, welche dem jeweiligen Betrag des Summanden proportional ist. In den Abzweigstromkreisen, die den Widerständen 8, 9 und i o parallel liegen, fließt ein den Spannungsabfällen längs dieser Widerstände jeweils proportionaler Teilstrom. Die Summe dieser Teilströme wird- im Summeninstrument 7 gemessen.An embodiment of the invention is shown in the drawing. I, 2, 3 are the lines leading to the measuring points, q., 5, 6 are the instruments for reading the advertising of the individual summands, 7 the sum instrument ,. 8, g, i o resistances in the individual measuring circuits, 11, 12, 13 resistances in the branch circuits, 14 a battery. The device works as follows: The amperage in the circles i, 2, 3 is by the Fernxneßgeberapparate located at the measuring points necessarily set to a value which corresponds to the respective value of the summand is equivalent to. This current is generated by the battery i q. delivered. Such donor instruments are z. B. those after 'the automatic compensation method. At the resistors 8, 9, i o is accordingly a voltage which corresponds to the respective amount of the summand is proportional. In the branch circuits that the resistors 8, 9 and i o are parallel, the voltage drops across these resistors flows in each case proportional partial flow. The sum of these partial flows is - in the sum instrument 7 measured.

Die Einrichtung gemäß der Erfindung ist insbesondere verwendbar, wenn die zu summierenden Größen verschiedene Nennbeträge besitzen. Wenn also in der Fernleitung i eine Meßgröße von beispielsweise iooo KW, in_ der Leitung 2 eine solche von 2ooo, in der Leitung 3 eine solche von 3ooo KW jeweils durch eine Stromstärke von io Milliampere dargestellt wird, so sind die Widerstände 8, 9, i o im Verhältnis 1.-2:3 abzustufen, um die Leitungsströme entsprechend ihrem Maßstab zu berücksichtigen.The device according to the invention is particularly useful when the sizes to be summed have different nominal values. So if in the long-distance line i a measured variable of, for example, iooo KW, in_ line 2 one of 2ooo, in line 3 one of 3ooo KW through an amperage of 10 milliamps is shown, the resistances 8, 9, i o are to be graded in the ratio 1.-2: 3, in order to consider the line currents according to their scale.

Ferner ist die Erfindung auch für die. Bildung willkürlicher Teilsummen verwendbar. Soll in der gewünschten Teilsumme irgendein Summand nicht vorhanden sein, so ist der betreffende Abzweigstromkreis zwischen dem Abzweigpunkt P, und dem Vereinigungspunkt P. durch einen Ausschalter zu unterbrechen.Furthermore, the invention is also for. Formation of arbitrary partial sums usable. Should any summand not be present in the desired subtotal the relevant branch circuit is between branch point P, and the junction point P. to be interrupted by a circuit breaker.

Claims (3)

PATENTANSPRÜCHE.: i. Einrichtung zur Messung, insbesondere Fernmessung der Summe von Meßgrößen, bei der .den einzelnen Summanden entsprechende Stromstärken nach einem Kompensationsverfahren derart eingeregelt werden, daß die Stromstärken unabhängig von den Widerständen des Fernleitungsstromkreises sind, dadurch gekennzeichnet, daß von den eingeregelten, über die Leitungen bzw. Fernleitungen geleiteten Strömen Teilströme abgezweigt und über ein Summeninstrument geführt werden, derart, daß.das Verhältnis .der dem Summeninstrument zugeführten Teilströme zu den betreffenden Meßwerten für alle Summanden .dasselbe ist. CLAIMS: i. Devices for measuring, in particular telemetry the sum of measured quantities, in which .the individual summands corresponding current strengths be regulated according to a compensation process in such a way that the current intensities are independent of the resistances of the long-distance line circuit, characterized in that that of the regulated currents conducted via the lines or long-distance lines Partial flows are branched off and guided via a summation instrument in such a way that the Ratio of the partial flows supplied to the sum instrument to the relevant Measured values for all summands .is the same. 2. Einrichtung nach Anspruch i, dadurch gekennzeichnet, .daß in den von den Geberinstrumenten ,gesteuerten Stromkreisen und in den Abzweigstromkreisen Widerstände entsprechend den Nennwerten der zu summierenden Größen eingeschaltet sind. 2. Device according to claim i, characterized that in the circuits controlled by the transmitter instruments and in the branch circuits, resistances corresponding to the nominal values of those to be summed Sizes are turned on. 3. Einrichtung nach Anspruch i und 2, dadurch gekennzeichnet, daß zur ' Bildung beliebiger Teilsummen in den Abzweigstromkreisen Ausschalter vorgesehen sind.3. Device according to claim i and 2, characterized in that that provided for 'formation of any partial sums in the branch circuits off switches are.
DE1930636620D 1930-03-08 1930-03-08 Device for measuring, in particular remote measurement of the sum of measured quantities, in which the current strengths corresponding to the individual summands are regulated according to a compensation method Expired DE636620C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE636620T 1930-03-08

Publications (1)

Publication Number Publication Date
DE636620C true DE636620C (en) 1936-10-12

Family

ID=6579490

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930636620D Expired DE636620C (en) 1930-03-08 1930-03-08 Device for measuring, in particular remote measurement of the sum of measured quantities, in which the current strengths corresponding to the individual summands are regulated according to a compensation method

Country Status (1)

Country Link
DE (1) DE636620C (en)

Similar Documents

Publication Publication Date Title
DE102012000557A1 (en) Monitoring device and method for monitoring a line section with a monitoring device
WO2017186410A1 (en) Method for determining a load current and battery sensor
DE636620C (en) Device for measuring, in particular remote measurement of the sum of measured quantities, in which the current strengths corresponding to the individual summands are regulated according to a compensation method
AT132993B (en) Method and circuit arrangement for total measurement in which the addends are represented by current intensities.
AT58704B (en) Circuit arrangement for locating faults on cables and lines.
DE475071C (en) Method for the electrical summation of variable measured quantities
DE563637C (en) Device for determining the fault location in the event of earth faults in ring networks
DE710488C (en) Circuit arrangement for total measurement, in particular in remote measuring systems
DE558393C (en) Device for displaying and controlling the ratio of measured quantities
DE407826C (en) AC bridge for measuring systems of complex resistances
DE477333C (en) Device for measuring and adding up similar measured quantities
AT135082B (en) Circuit arrangement for total measurement, especially in telemetry systems.
DE610307C (en) Device for monitoring electrical distribution networks
DE547120C (en) Method for measuring products of two or more arbitrary, in particular electrical, measured quantities and possibly also the time, using compensation devices
DE589392C (en) Circuit arrangement for displaying the difference between two currents or current sums with the aid of an electrical instrument upstream of which resistors are connected
DE432193C (en) Device for electrical measurement and registration of the total flow of a flow rate distributed over several separate pipelines
DE3111107A1 (en) Circuit arrangement for measurement transmission of DC voltages
DE760977C (en) The use of DC compensators in telemetry systems
DE601145C (en) Method for monitoring earth fault extinguishing devices in high-voltage networks
DE566180C (en) Device for the geometric summation of two measured quantities
DE627062C (en) Method for remote measurement of two measured quantities
DE566179C (en) Device for the geometric summation of two measured quantities
DE707150C (en) Method for the simultaneous electrical transmission of two measurement values
DE905049C (en) Device for determining the resistance of earth electrodes
DE562806C (en) Device for displaying, in particular remote display, the sum or difference of identical, mutually independent quantities to be measured