DE599210C - Method for controlling several alternating current generators to maintain the readiness for parallel switching with the help of a digital frequency - Google Patents
Method for controlling several alternating current generators to maintain the readiness for parallel switching with the help of a digital frequencyInfo
- Publication number
- DE599210C DE599210C DE1930599210D DE599210DD DE599210C DE 599210 C DE599210 C DE 599210C DE 1930599210 D DE1930599210 D DE 1930599210D DE 599210D D DE599210D D DE 599210DD DE 599210 C DE599210 C DE 599210C
- Authority
- DE
- Germany
- Prior art keywords
- digital frequency
- readiness
- maintain
- help
- alternating current
- 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
- 238000000034 method Methods 0.000 title claims description 4
- 239000013598 vector Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
- H02J3/42—Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
Verfahren zur Regelung mehrerer Wechselstromerzeuger zur Aufrechterhaltung der Parallelschaltbereitschaft mit Hilfe einer Leitfrequenz Es ist bereits vorgeschlagen, zur Aufrechterhaltung der Parallelschaltbereitschaft von mehreren Wechselstromenergieverteilungsnetzen die Phasenlage der Spannungsvektoren dauernd so genau miteinander in übereinst:mmung zu bringen, daß seine Parallelschaltung jederzeit möglich ist. Es ist ferner bereits vorgeschlagen worden, bei derartigen Anlagen sowie zur Regelung von parallel geschalteten Wechselstrommaschinen eine Leitfrequenz zu verwenden, um bestimmte Winkellagen der Spannungsvektoren reinzustellen. Unter Leitfrequenz wird eine besondere Hilfsfrequenz verstanden, die nicht zur Leistungsübertragung, sondern lediglich als Normalfrequenz dient.Method for controlling multiple alternators for maintenance the readiness for parallel switching with the help of a digital frequency It has already been proposed to maintain the readiness for parallel switching of several AC power distribution networks the phase position of the voltage vectors is always exactly in agreement with one another to bring that its parallel connection is possible at any time. It is also already has been proposed in such systems and for regulating parallel-connected AC machines use a digital frequency to determine certain angular positions of the Put in voltage vectors. A special auxiliary frequency is referred to as the master frequency understood that not for power transmission, but only as a normal frequency serves.
Nach einem anderen Vorschlag zur Aufrechterhaltung der P;arallelschaltbiereitschaft von Wechselstromnetzen wird nicht eine absolute Übereinstimmung der Phasen herheigeführt, sondern !es werden die Frequenzen so genau konstant gehalten, daß nur langsam Sehwebungen auftreten. In diesem Pall erhält man zwangsläufig in ausreichend kurzen Zeitabständen leine genügende Übereinstimmung der Phasen, so daß man in diesen Zeitpunkten ohne weiteres parallel schalten kann.According to another suggestion to maintain the parallel switching service AC networks do not ensure that the phases are absolutely identical, the frequencies are kept constant so precisely that the visual weaving is slow appear. In this pall you inevitably receive in sufficiently short time intervals There is no sufficient correspondence between the phases, so that at these points in time one can without can connect further in parallel.
Gemäß der Erfindung wird die Leitfrequenz in Abhängigkeit vorn der Uhrzeit beeinflußt. Die Beeinflussung der Leitfrequenz in Abhängigkeit von der Uhrzeit kann in jedem der oben beschriebenen Fälle vorgenommen werden. Durch Beeinflussung der Leitfrequenz in Abhängigkeit von der Uhrzeit kann man erreichen, daß die Periodensumme über größere Zeitabschnitte in seinem ganz bestimmten Verhältnis zu der Uhrzeit steht, so daß Synchronuhren, die an die Netze angeschlossen sind, stets genau zeigen. Es ist zweckmäßig, die Beeinflussung der Leitfrequenz in Abhängigkeit von der Uhrzeit in der Weise vorzunehmen, daß man auf einen zur Konstanthaltung der Leitfrequenz dienenden Regler bei Abweichungen der Leitfrequenz vom Sollwert, der durch die Uhrzeit festgelegt wird, zusätzlich ;einwirkt, um dadurch eine Korrektion der Leitfrequenz herbeizuführen.According to the invention, the master frequency is dependent on the Time influences. The influence of the digital frequency as a function of the time can be done in any of the cases described above. By influencing the digital frequency as a function of the time can be achieved that the period sum over longer periods of time in its very specific relationship to the time so that synchronous clocks connected to the network always show exactly. It is useful to influence the digital frequency as a function of the time make in such a way that you have to keep the master frequency constant Serving controller in the event of deviations of the digital frequency from the setpoint, which is determined by the time is determined, in addition; acts to thereby correct the master frequency bring about.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE599210T | 1930-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE599210C true DE599210C (en) | 1934-06-27 |
Family
ID=6574340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1930599210D Expired DE599210C (en) | 1930-11-27 | 1930-11-27 | Method for controlling several alternating current generators to maintain the readiness for parallel switching with the help of a digital frequency |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE599210C (en) |
-
1930
- 1930-11-27 DE DE1930599210D patent/DE599210C/en not_active Expired
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