DE640468C - Electrical measuring and protection equipment - Google Patents

Electrical measuring and protection equipment

Info

Publication number
DE640468C
DE640468C DEA76593D DEA0076593D DE640468C DE 640468 C DE640468 C DE 640468C DE A76593 D DEA76593 D DE A76593D DE A0076593 D DEA0076593 D DE A0076593D DE 640468 C DE640468 C DE 640468C
Authority
DE
Germany
Prior art keywords
winding
voltage
leg
zero point
star
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
DEA76593D
Other languages
German (de)
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
Priority to DEA76593D priority Critical patent/DE640468C/en
Application granted granted Critical
Publication of DE640468C publication Critical patent/DE640468C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/353—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system involving comparison of phase voltages

Landscapes

  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Description

Das Patent 639 823 betrifft eine Meß- und Schutzeinrichtung, bei der Spannungswandler verwendet werden, die gleichzeitig zur Ge-. winnung der Phasenerdspannung sowie der Nullpunktserdspannung, d. h. der Spannung des Systemnullpunktes gegen Erde dienen. Die für Meßzwecke erforderlichen Phasennullpunktsspannungen werden gemäß dem Hauptpatent durch geometrische Zusammen-Setzung. der Spannung des Phasenleiters .gegenüber dem erdgeschlossenen Punkte und der Nullpunktserdspannung gebildet. Die Wicklungen müssen dabei so bemessen sein, daß die Nxollpuriktsexdspannung bei sattem Leitererdschluß in ihrer Größe gleich der Phasennullpunktsspannung ist.The patent 639 823 relates to a measuring and Protective device in which voltage transformers are used, which are used at the same time. Obtaining the phase earth voltage and the zero point earth voltage, d. H. the tension of the system zero point against earth. The phase zero voltages required for measurement purposes are according to the main patent by geometric composition. the voltage of the phase conductor. compared to the grounded point and the zero point earth voltage. The windings must be dimensioned in such a way that that the Nxollpuriktsexdspannung at full The size of the conductor earth fault is equal to the phase zero point voltage.

Dies läßt sich nach dem Hauptpatent dadurch verwirklichen, daß man 'einen unverketteten Mehrphasenwandler mit einer* Sternao wicklung und auf besonderen Ausgleichsschenkeln angeordneten Wicklungen verwendet und auf einem der Schenkel eine An-According to the main patent, this can be achieved by creating an unlinked Polyphase converter with a * Sternao winding and windings arranged on special compensating legs are used and on one of the legs an

1
zapfung vorsieht, die eine Spannung von rn=- 1
tap provides a voltage of rn = -

der verketteten Spannung an der Sternwicklung liefert. Bei entsprechender Bemessung der einzelnen Wicklungsteile lassen sich dann ohne weiteres die Phasennullpunkts spannungen und die Nullpunktserdspannung gewinmen. Die Einrichtung hat jedoch den Nachteil, daß der Wandler unsymmetrisch belastet wird. Dies läßt sich dadurch vermeiden, daß man erfindungsgemäß die Wicklungen auf dem vierten und fünften Schenkel des Mehrphasenwandlers je mit einer Anzapfung versieht, von denen die eine mit dem Sternpumkt der sekundären Sternwicklung verbunden und die andere als Nullpunkt nach außen geführt ist, derart, daß zwischen diesem Nullpunkt und dem Anfang der sekundären Sternwicklung je eine . Phasennullpunktsspannung und zwischen den beiden freien Endklemmen der Wicklungen auf dem vierten und fünften Schenkel die Nullpunktserdspannung erscheint. 4-5the line-to-line voltage on the star winding. With appropriate dimensioning of the individual winding parts can then easily be the phase zero voltages and gain the zero-point earth voltage. However, the facility has the disadvantage that the converter is loaded asymmetrically. This can be avoided by the fact that, according to the invention, the windings on the fourth and fifth legs of the polyphase converter each with a tap one of which is connected to the star pump of the secondary star winding and the other is led to the outside as the zero point, in such a way that between this Zero point and the beginning of the secondary star winding one each. Phase neutral voltage and between the two free end terminals of the windings on the fourth and fifth legs, the zero point earth voltage appears. 4-5

Bei dem Ausführungsbeispiel der Erfindung ist mit ι die Primärwicklung eines an die Phasen RS T angeschlossenen Spannungswandlers bezeichnet, der auf seinen mittleren Schenkeln drei, auf seinen beiden äußeren Schenkeln eine Ausgleichswicklung 4 trägt. Der Sternpunkt der Wicklung 3 ist erfindungsgemäß mit einer Anzapfung et auf dem vierten Schenkel verbunden. Eine Anzapfung O des fünften Schenkels ist erfindungsgemäß nach außen geführt,, ferner sind die nicht miteinander verbundenen Klemmen e und 11 der Wicklungen auf dem vierten und fünften Schenkel nach außen geführt. Beträgt die Windungszahl einer. Wicklung auf einem Schenkel der sekundären Sternwicklung a, dann soll die Windungszahl einerIn the exemplary embodiment of the invention, the primary winding of a voltage converter connected to the phases RS T is designated by ι, which carries three compensating winding 4 on its middle legs and one compensating winding 4 on its two outer legs. According to the invention, the star point of the winding 3 is connected to a tap e t on the fourth leg. According to the invention, a tap O of the fifth leg is led to the outside, furthermore the terminals e and 11 , which are not connected to one another, of the windings on the fourth and fifth legs are led to the outside. If the number of turns is one. Winding on one leg of the secondary star winding a, then the number of turns should be one

Wicklung auf dem vierten und fünften Schenkel jeTT^", die Windungszahl eines Wicklungsteiles zwischen einer Anzapfung ei3 0 urf||l den miteinander verbundenen Klemmen pWinding on the fourth and fifth leg perTT ^ ", the number of turns of a winding part between a tap e i3 0 urf || l the interconnected terminals p

vierten und fünften Schenkels — betragfourth and fifth leg amount

Mit Rücksicht auf die Streuverhältnisse ist es zweckmäßig, diese BemessungsvorschriftWith regard to the scattering conditions, it is advisable to use this dimensioning rule

ίο nicht genau einzuhalten, sondern die Windungszahl sämtlicher Wicklungsteile auf dem vierten und fünften Schenkel etwas höher, beispielsweise um 2 o/o höher, zu wählen. Es erscheint dann zwischen .den Punktene und η die Nullpunktserdspannung U0, zwischen den Punkten r, s, t der sekundären Sternwicklung 3 und dem Nullpunkt 0 jeweils die Phasennullpunktsspannung Up; ferner zwischen der Anzapfung ^1 und einem der Punkte R, S, T jeweils die Phasenerdspannung einer Leitung gegen Erde, also beispielsweise zwischen 5 und el die Spannung Use- ίο not to be adhered to exactly, but rather to choose the number of turns of all winding parts on the fourth and fifth leg a little higher, for example by 2 o / o higher. The zero point earth voltage U 0 then appears between the points e and η , and the phase zero point voltage U p between the points r, s, t of the secondary star winding 3 and the zero point 0 ; furthermore, between the tap ^ 1 and one of the points R, S, T , the phase earth voltage of a line to earth, i.e. for example between 5 and e l the voltage Use-

Claims (2)

Patentansprüche:Patent claims: i. Meß- und Schutzeinrichtung, bei der unverkettete Mehrphasenwandler mit einer Sternwicklung und auf besonderen Aus-3ü gleichsschenkeln angeordneten Wicklungen vorgesehen sind, deren Windungszahli. Measuring and protective device in which the non-chained multiphase converter with a Star winding and windings arranged on special isosceles are provided, the number of turns jeweils γ^=~ der Windungszahl einer sekundären Sternwicklung beträgt und die Anzapfungen besitzen, welche eine Spannungeach γ ^ = ~ the number of turns of a secondary Star winding and the taps have a voltage ι
von .— der verketteten Spannung an derι
of .— the chained voltage at the sekundären Sternwicklung zur geometri-.- sehen Zusammensetzung mit der Spannung des Phasenleiters gegenüber dem erdgeschlossenen Punkt liefern, nach Patent 639 823, dadurch gekennzeichnet, daß die Wicklungen auf dem vierten und fünften Schenkel des Mehrphasenwandlers je mit einer Anzapfung (elt 0) versehen sind, von denen die eine (^1) mit dem Sternpunkt der sekundären Sternwicklung verbunden und die andere als Nullpunkt (0) nach außen geführt ist, derart, daß zwischen diesem Nullpunkt (0) und den Anfängen der Sternwicklung [r, s, t) je eine Phasennullpunktsspannung und zwischen den beiden freien Endklemmen {e, ti) der Wicklungen auf dem vierten und fünften Schenkel die Nullpunktserdspannung (U0) erscheint.Secondary star winding to the geometri -.- see composition with the voltage of the phase conductor against the grounded point, according to patent 639 823, characterized in that the windings on the fourth and fifth legs of the polyphase converter are each provided with a tap (e lt 0) , of which one (^ 1 ) is connected to the star point of the secondary star winding and the other is led to the outside as zero point (0) in such a way that between this zero point (0) and the beginning of the star winding [r, s, t) a phase zero point voltage each and the zero point earth voltage (U 0 ) appears between the two free end terminals {e, ti) of the windings on the fourth and fifth leg. 2. Meß- und Schutzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Windungszahl einer Wicklung auf einem Schenkel der sekundären Sternwicklung«!, einer Wicklung auf dem vierer ten und fünften Schenkel je etwaγ;-^und2. Measuring and protection device according to claim 1, characterized in that the number of turns of a winding on one leg of the secondary star winding «!, a winding on the fourth and fifth leg each about γ; - ^ and eines Wicklungsteiles zwischen einer Anzapfung (ei7 0) und den miteinander verbundenen Klemmen des vierten unda winding part between a tap (e i7 0) and the interconnected terminals of the fourth and fünften Schenkels etwa je ■-'-- beträgt.fifth leg is approximately each ■ -'--. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEA76593D 1935-07-20 1935-07-20 Electrical measuring and protection equipment Expired DE640468C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA76593D DE640468C (en) 1935-07-20 1935-07-20 Electrical measuring and protection equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA76593D DE640468C (en) 1935-07-20 1935-07-20 Electrical measuring and protection equipment

Publications (1)

Publication Number Publication Date
DE640468C true DE640468C (en) 1937-01-07

Family

ID=6946835

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA76593D Expired DE640468C (en) 1935-07-20 1935-07-20 Electrical measuring and protection equipment

Country Status (1)

Country Link
DE (1) DE640468C (en)

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