| Vorschlussdrossel (Vorschaltdrossel) series reactor
Explanation:
(57) Vorrichtung und Verfahren zur Prüfung einer mit einem elektrischen Versorgungsnetz verbundenen Stromerzeugungseinheit, insbesonderer einer Windenergieanlag3 (16), die eine zwischen Stromerzeugungseinheit und Versorgungsnetz (10) schaltbare Kurzschlusstesteinheit (12) mit einer Längsimpedanz (Zk) und einer Serienimpedanz (ZN) und einem zwischen Kurzschlusstesteinheit (12) und Versorgungsnetz (10) schaltbaren Transformator (20) aufweist, der unter Last stufbar ist.
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[0008] Kurzschlusssimulatoren bzw. Kurzschlusstesteinheiten können beispielsweise nach einem Spannungsteilerprinzip arbeiten. Hierzu verfügen sie über eine Vorschlussdrossel und eine Kurzschlussdrossel. Vorschlussdrossel wird gelegentlich auch als Serienimpedanz bezeichnet, während die Kurzschlussdrossel auch als Längsimpedanz bezeichnet wird. Die Kurzschlussdrossel wird über einen Schalter aktiviert …
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[26] … Die Kurzschlusstesteinheit 12 besitzt eine Serien- und Längsimpedanz ZN und ZK, die geschaltet werden, um die Spannung der Windenergieanlage für eine definierte Dauer um einen definierten Betrag zu reduzieren. Die Serienimpedanz ZK kann durch einen Schalter S3 überbrückt werden. Die Längsimpedanz ZK kann durch eine Schalter S4 geerdet werden.
(Anm: Abb. 1 zeigt: Kurzschlussdrossel ZN mit parallelem Schalter S3, anschließend eine zur Masse geschaltete "Längsimpedanz" ZK mit Schalter S4 in Reihe. Link aus Vertraulichkeitsgründen nicht angegeben.)
Goggle shows:
"Vorschlussdrossel" 2 results (0,24 seconds)
Anm.: ein sehr ungewöhnlicher Begriff. Gemeint ist eine Vorschaltdrossel.
Dagegen: "Vorschaltdrossel" About 6.330 results (0,40 seconds)
Vorschaltdrossel f series reactor
(Budig, Fachwörterbuch und Elektronik)
Anm.: "Vorschlussdrossel" ist dort nicht enthalten.
е series reactor d Vorschaltdrossel
https://books.google.de/books?id=QNH3CAAAQBAJ&pg=PA273&lpg=P...
(Dictionary of Electrical Engineering)
Vorschaltdrossel / (El) current-limiting reactor, series reactor
https://books.google.de/books?id=vai7wiq5HIYC&pg=PA1595&lpg=...
(Langenscheidt Routledge German dictionary of phiysics)
Transformator oder Vorschaltdrossel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass an der Trennwand (4) Drahtführungsmittel (12,13,14) angeformt sind, welche jeweils den Drahtweg für die freien Enden der Spulendrähte bestimmen.
Transformer or series reactor according to one of claims 1 to 7, characterized in that wire guides (12, 13, 14) are formed on the partition wall (4) in order to determine the paths of the free ends of the coil wire.
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An jedem Wickelkopf eines Transformators oder einer symmetrischen Vorschaltdrossel ist ein einstückiges Formstück mit einer Trennwand (4) zur Trennung der beiden Spulen (2,3) vorgesehen.
An integral moulding having a separating wall (4) for separating the two coils (2,3) is provided on each winding overhang of a transformer or of a balanced series inductor.
https://context.reverso.net/translation/german-english/Vorsc...
Series reactor are high impedance electrical components that are used to limit current , mostly in cases of inductive motors or powerful flood lights. Sometimes, they're also used to alter the power factor of an electrical appliance or in ground-return earthings.
https://www.quora.com/What-is-Series-Reactor
Series reactors are sometimes referred to as current limiting reactors and, as the name suggests, are used for the purpose of limiting fault currents or restricting the fault levels of power station auxiliary systems.
https://www.sciencedirect.com/topics/engineering/current-lim...
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Note added at 1 day 20 hrs (2020-02-17 11:28:32 GMT)
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Let’s check Wikipedia:
In an electric power transmission grid system, switchyard reactors are installed at substations to help stabilize the power system.
For transmission lines, the space between overhead line and ground forms a capacitor parallel to transmission line, which causes an increase in voltage as the distance increases. To offset the capacitive effect of the transmission line and to regulate the voltage and reactive power of the power system, reactors are connected either at line terminals or at the middle, thereby improving the voltage profile of transmission line.
https://en.wikipedia.org/wiki/Switchyard_reactor
In electrical engineering, current limiting reactors can reduce short-circuit currents, which result from plant expansions and power source additions, to levels that can be adequately handled by existing distribution equipment.
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The most common type is designed for three-phase electric power, in which three isolated inductors are each wired in series with one of the three line phases.
https://en.wikipedia.org/wiki/Current_limiting_reactor
Examples of series compensation
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• Thyristor-controlled series reactor (TCSR): a series reactor bank is shunted by a thyristor-controlled reactor
https://en.wikipedia.org/wiki/Flexible_AC_transmission_syste...
Why not 'series impedance'?
Short line
The short line approximation is normally used for lines less than 50 miles long. For a short line, only a series impedance Z is considered, while C and G are ignored.
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Medium line
The medium line approximation is used for lines between 50 and 150 miles long. In this model, the series impedance and the shunt (current leak) conductance are considered, with half of the shunt conductance being placed at each end of the line.
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Long line
The long line model is used when a higher degree of accuracy is needed or when the line under consideration is more than 150 miles long. Series resistance and shunt conductance are considered as distributed parameters, meaning each differential length of the line has a corresponding differential resistance and shunt admittance.
https://en.wikipedia.org/wiki/Electric_power_transmission
(Not applicable to the context as used for power transmission lines)
As the current is the same, the radiation resistance (real part of series impedance) will be half of the series impedance of the comparable dipole
https://en.wikipedia.org/wiki/Dipole_antenna
(Subject radio and telecommunication)
At resonance, the series impedance of the two elements is at a minimum and the parallel impedance is at maximum. Resonance is used for tuning and filtering, because it occurs at a particular frequency for given values of inductance and capacitance.
https://en.wikipedia.org/wiki/Electrical_resonance
(Neither applicable)
Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied. The term complex impedance may be used interchangeably.
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Impedance is a complex number, with the same units as resistance, for which the SI unit is the ohm (Ω). Its symbol is usually Z, …
The reciprocal of impedance is admittance, whose SI unit is the Siemens, formerly called mho.
https://en.wikipedia.org/wiki/Electrical_impedance
Conclusion: The term "impedance" relates to electrical properties, rather than to a device. Instead of that, a 'reactor' is a device.
| Johannes Gleim
Local time: 22:15
Specializes in field
Native speaker of: German
PRO pts in category: 449
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peer agreement (net): +3