DE518534C - Method for measuring an operating quantity of a part of an electrical system protected by a protective relay - Google Patents
Method for measuring an operating quantity of a part of an electrical system protected by a protective relayInfo
- Publication number
- DE518534C DE518534C DES89627D DES0089627D DE518534C DE 518534 C DE518534 C DE 518534C DE S89627 D DES89627 D DE S89627D DE S0089627 D DES0089627 D DE S0089627D DE 518534 C DE518534 C DE 518534C
- Authority
- DE
- Germany
- Prior art keywords
- relay
- resistance
- measuring
- current
- reactance
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
Es ist bekannt, Messungen in der Weise auszuführen, daß eine Größe, meist ein Widerstand, so geregelt wird, bis ein Anzeigegerät auf Null steht oder auf irgendeinem bestimmten markierten Ausschlag. Es wird dann zweckmäßig an dem zu regelnden Teile gleich die Skala für die Meßgröße angebracht. Gemäß der Erfindung wird ein Verfahren ähnlich dem genannten verwendet, umIt is known to carry out measurements in such a way that a quantity, usually a Resistance, is regulated until a display device is at zero or on some certain marked rash. The scale for the measured variable is then expediently attached to the part to be controlled. According to the invention, a method similar to that mentioned is used to
ίο Meßgeräte zu sparen.ίο to save measuring instruments.
In solchen Schaltungen, in denen Relais vorhanden sind, werden diese Relais in gleicher Weise zu Messungen verwendet wie die Anzeigegeräte in denjenigen Schaltungen, bei denen auf einen bestimmten Ausschlag geregelt wird. \Torzugsweise ist diese Methode bestimmt zur Messung von Leitungswiderständen. Für diese Messung werden die Relais der Schutzschaltungen verwendet, so daßIn circuits in which relays are present, these relays are used for measurements in the same way as the display devices in those circuits in which a certain deflection is controlled. \ T orzugsweise this method is intended for measuring lead resistances. The relays of the protective circuits are used for this measurement, so that
so sich die Beschaffung eines besonderen Meßgerätes für diesen Zweck erübrigt.so the procurement of a special measuring device for this purpose is unnecessary.
Die Erfindung betrifft somit ein Verfahren zur Messung einer Betriebsgröße eines durch ein Schutzrelais geschützten Teils einer elekirischen Anlage, bei dem erfindungsgemäß dem auf eine bestimmte Ansprechempfindlichkeit eingestellten Schutzrelais so viel Widerstand vor- oder parallelgeschaltet wird, daß es bei der zu messenden Betriebsgröße gerade anspricht und die Größe dieses zusätzlich eingeschalteten Widerstandes ein Maß für die zu messende Betriebsgröße ist.The invention thus relates to a method for measuring an operating variable by a protective relay protected part of an electrical system in which, according to the invention so much resistance to the protective relay set to a certain response sensitivity is connected upstream or in parallel so that it is just the case with the operating variable to be measured responds and the size of this additionally switched on resistor is a measure of the to measuring company size is.
Die Regelung geschieht mit Hilfe von Regelwiderständen, die, je nachdem ob es sich um einen stromempfindlichen oder einen spannungsempfindlichen Geräteteil handelt, im Nebenschluß oder vorgeschaltet werden. So kann ein Strommesser zur Messung beliebiger Stromstärke von einer bestimmten Größe ab aufwärts verwendet werden, wenn man ihm einen Nebenschluß gibt und diesen so einregelt, daß der Stromzeiger bei jeder Meßstromstärke denselben Ausschlag gibt. Die Skala des Regehviderstandes würde dann gleich in Meßstromstärken geeicht werden. Entsprechend läßt sich mit einem Spannungsmesser jede Spannung bis zu einem bestimmten Wert abwärts mit Hilfe eines regelbaren Vorschaltwiderstandes messen. Auch ein Spannungsteiler kann verwendet werden, wobei das Anzeigegerät auf einen bestimmten Ausschlag eingestellt wird.The regulation happens with the help of rheostats, which, depending on whether it is A current-sensitive or a voltage-sensitive part of the device is involved, in the shunt or upstream. So an ammeter can measure any Amperage from a certain size upwards can be used when you give it a shunt and adjust it so that the current pointer for each Measurement current strength gives the same deflection. The rain resistance scale would then are immediately calibrated in measuring currents. Correspondingly, a voltmeter can be used Measure every voltage down to a certain value with the help of an adjustable series resistor. Also a Voltage divider can be used, with the display device on a specific Deflection is set.
Als Anzeigegerät kann beispielsweise das AViderstandsrelais einer Schutzschaltung dienen, das bei einer bestimmten Größe des Leitungswiderstandes, die Kippwiderstand heißen möge, anspricht. Gibt man der Stromspule des Relais einen Nebenschluß, der aufThe A resistance relay of a protective circuit can serve as a display device, for example. which responds at a certain size of the line resistance, which may be called the tilting resistance. You give the current coil of the relay has a shunt that opens
*J Von dem Patentsucher ist als der Erfinder angegeben worden:* J The following has been indicated by the patent seeker as the inventor:
Dr.-Ing. Hans Poleck in Berlin-Lichterfelde.Dr.-Ing. Hans Poleck in Berlin-Lichterfelde.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES89627D DE518534C (en) | 1929-01-26 | 1929-01-26 | Method for measuring an operating quantity of a part of an electrical system protected by a protective relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES89627D DE518534C (en) | 1929-01-26 | 1929-01-26 | Method for measuring an operating quantity of a part of an electrical system protected by a protective relay |
Publications (1)
Publication Number | Publication Date |
---|---|
DE518534C true DE518534C (en) | 1931-02-18 |
Family
ID=7515241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES89627D Expired DE518534C (en) | 1929-01-26 | 1929-01-26 | Method for measuring an operating quantity of a part of an electrical system protected by a protective relay |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE518534C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1065067B (en) * | 1953-11-24 | 1959-09-10 | Hagenuk Neufeldt Kuhnke Gmbh | Circuit arrangement for automatic impedance regulator |
-
1929
- 1929-01-26 DE DES89627D patent/DE518534C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1065067B (en) * | 1953-11-24 | 1959-09-10 | Hagenuk Neufeldt Kuhnke Gmbh | Circuit arrangement for automatic impedance regulator |
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