NO116472B - - Google Patents

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Publication number
NO116472B
NO116472B NO16790667A NO16790667A NO116472B NO 116472 B NO116472 B NO 116472B NO 16790667 A NO16790667 A NO 16790667A NO 16790667 A NO16790667 A NO 16790667A NO 116472 B NO116472 B NO 116472B
Authority
NO
Norway
Prior art keywords
voltage
resistance
switching
capacitor
shunted
Prior art date
Application number
NO16790667A
Other languages
Norwegian (no)
Inventor
W Stein
Original Assignee
Siemens 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 Siemens Ag filed Critical Siemens Ag
Publication of NO116472B publication Critical patent/NO116472B/no

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Control Of Electrical Variables (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Description

Anordning til lasteomkobling ved trinntransformatorer ved hjelp av styrbare halvlederlikeretter-apparater. Device for load switching at step transformers using controllable semiconductor rectifier devices.

Der har allerede vært foreslått en anordning til lastomkobling ved trinntransformatorer ved hjelp av styrte halvlederlike-rettere hvor der parallelt med de styrbare halvlederlikeretter-apparafatl-er anordnet styreapparater som med sine utganger mater det respektive i den annen velgerarm liggende styrbare halvlederlikeretter-apparat og., takket være anordningen av et RC-ledd parallelt med inngangen., kan fore laststrommen i noen få mikrosekunder under omkoblingen etter null-gjennomgang av strommen uten at der på dem opptrer noen vesentlig spenning sammenholdt med trinnspenningen. Denne lille spenning bevirker via en kondensator og en dermed seriekoblet transformator 'allerede tenning av de tilsluttede styrbare halvlederlikeretbere. Den vesentlig hoyere trinnspenning frembringer via kondensatoroverforings-leddet og et dermed parallellkoblet motstandsoverforingsledd bare st-yrestrommer av tilstrekkelig stbrrelse, som adderes på transfon..a-Kfr. kl. 21C-67/01 torens sekundærsider og som folge av sin faseforskyvning gir den nodvendige ubrutte likestrom. De styreapparater soin anvendes i denne forbindelse, og som får sin styrespenning fra den til enhver tid foreliggende trinnspenning på trinntransformatoren, er anvendelige for forskjellig trinnspenning, f.eks. opp til et forhold 1:4. Nu forekommer det imidlertid i praksis, f.eks. ved lokomotivtransforma-torer, at trinnspenningene varierer i enda hoyere forhold, f.eks. 1:7. Blir styrekretsen i slike tilfeller dimensjonert for den minste forekommende trinnspenning, så opptrer der en for hby belastning ved de meget sterkt varierende trinnspenninger, altså f.eks. opp til syv ganger inngangsspenningen. A device has already been proposed for load switching at step transformers using controlled semiconductor rectifiers, where control devices are arranged in parallel with the controllable semiconductor rectifier apparatus which, with their outputs, feed the respective controllable semiconductor rectifier device located in the other selector arm and., thanks to the arrangement of an RC link in parallel with the input., can carry the load current for a few microseconds during the switching after zero crossing of the current without any significant voltage appearing on them compared to the step voltage. This small voltage causes the connected controllable semiconductor rectifiers via a capacitor and a series-connected transformer to already be ignited. The significantly higher step voltage produces via the capacitor transfer link and a parallel-connected resistance transfer link only control currents of sufficient strength, which are added to the transformer..a-Kfr. at 21C-67/01 the secondary sides of the tor and, as a result of its phase shift, it provides the necessary uninterrupted direct current. The control devices used in this connection, which get their control voltage from the step voltage present at any time on the step transformer, are applicable for different step voltages, e.g. up to a ratio of 1:4. However, it now occurs in practice, e.g. with locomotive transformers, that the step voltages vary in even higher proportions, e.g. 1:7. In such cases, if the control circuit is dimensioned for the smallest occurring step voltage, then too high a load occurs with the very strongly varying step voltages, i.e. e.g. up to seven times the input voltage.

Oppfinnelsens oppgave er å angi en losning hvorved styreapparater av .vedkommende art også kan gjores anvendelige ved to forskjellige spenningsområder, f.eks. 1:4 og 1:7, og det særlig slik The task of the invention is to provide a solution whereby control devices of the relevant kind can also be made applicable at two different voltage ranges, e.g. 1:4 and 1:7, and especially so

at omkoblingen fra det ene spenningsområde til det annet skjer automatisk that the switching from one voltage range to the other occurs automatically

Ifblge oppfinnelsen blir dette oppnådd ved hjelp av en forkoblingsmotstand som er innkoblet foran styreapparatene og består av en koblingskontakt som ligger 1 ledningsføringen for styreapparatets tilslutningsledninger og er innkoblet i diagonalen i en Gratzbro, og som er shuntet med en motstand og påvirkes av et relé beliggende mellom de to trinnvelgerarmer, samt av en kondensator som er tilsluttet Gratzbroens likespenningsutgang og shuntet med en motstand. According to the invention, this is achieved by means of a ballast resistor which is connected in front of the control devices and consists of a switching contact which is located in the wiring for the control device's connection cables and is connected diagonally in a Gratzbro, and which is shunted with a resistance and is affected by a relay located between the two step selector arms, as well as by a capacitor which is connected to Gratzbroen's direct voltage output and shunted with a resistor.

Oppfinnelsen vil bli belyst nærmere under henvisningThe invention will be explained in more detail under reference

til tegningen.to the drawing.

Fig. 1 viser oppbygningen fra forkoblingsapparatetFig. 1 shows the structure of the ballast

samt dettes sammenkobling med stjTeapparatet.as well as its connection with the control device.

Fig. 2 viser hvorledes det relé som påvirker forkoblings-apparatets koblingskontakt, er innkoblet mellom de to velgerarmer. Fig. 2 shows how the relay that affects the ballast's switching contact is connected between the two selector arms.

På fig. 1 er der ved 1 antydet et styreapparat utfortIn fig. 1, a control device is indicated by 1

i henhold til det ovennevnte eldre forslag. 11 og 12 er styreapparatets inngangsklemrner. 2 betegner et forkoblingsapparat som er anordnet i samsvar med oppfinnelsen, og som ligger i serie med styreapparatet 1 og folgelig er tilsluttet dels styreapparatets inn-gangs kl emme 11 og dels klemmen 13. Forkobllngsapparatet består av en koblingskontakt 22 som ligger i ledningslopet for inngangsledningen. og samtidig i diagonalen av en Gratzbro 23. Koblingskontakten 22 er shuntet! med en motstand 21. Til Gratzbroens likespenningsutgang er der koblet en kondensator 24, som igjen er shuntet med en motstand 25. Koblingskontakten 22 styres av et relé 5 (jfr. fig. 2) innkoblet i en ledning j according to the above older proposal. 11 and 12 are the control unit's input terminals. 2 denotes a ballast device which is arranged in accordance with the invention, and which is in series with the control device 1 and is consequently connected partly to the control device's input terminal 11 and partly to terminal 13. The ballast device consists of a coupling contact 22 which is located in the cable loop for the input cable. and at the same time in the diagonal of a Gratzbro 23. The coupling contact 22 is shunted! with a resistor 21. A capacitor 24 is connected to the Gratzbroen's DC output, which in turn is shunted with a resistor 25. The switching contact 22 is controlled by a relay 5 (cf. Fig. 2) connected in a wire j

som forbinder en av de to velgerarmer 41, 42, som kan kobles langs faste uttakskontakter, f.eks. 31, 32, på en trinnvikling 3-which connects one of the two selector arms 41, 42, which can be connected along fixed outlet contacts, e.g. 31, 32, on a step winding 3-

Anordningen arbeider på folgende måte: Ved små trånn-spenninger er relékontakten 22 sluttet, da reléet3ikke er magnetisert. Dermed ligger hele spenningen på styreapparatet 1. Når trinnspenningen når en bestemt storre hoyde, blir reléet 5 magnetisert og åpner dermed koblingskontakten 22. Motstanden 21 panner nu for styreapparatet en seriemotstand som reduserer spenningen over styreapparatet til en passende verdi. Denne nedsettelse av spenningen er onskelig i stasjoner tilstand. Nu oker imidlertid forkoblingsmotstanden 21 styreapparatets reaksjonstid på ugunstig måte når der legges spenning til klemmene 13, 12. Por å unngå denne uheldige virkning er motstanden 21 shuntet med en kondensator 24 i parallellkobling med en forholdsvis stor motstand 25. Men da nettopp kondensatoren 24 ville bevirke sveising av koblingskontakten 22 ved slutningen, er en direkte shuntin.5 av motstanden 21 ikke tilrådelig, og kondensatoren 24 er derfor tilsluttet likespennings-utgangen fra Gratzbroen 23. Dermed kan kondensatoren kortvarig virke til å shunte motstanden, men kan ikke lenger lade seg ut over relékontakten 22 på farlig måte. The device works in the following way: At low voltages, the relay contact 22 is closed, as the relay 3 is not magnetized. Thus, the entire voltage is on the control device 1. When the step voltage reaches a certain greater height, the relay 5 is magnetized and thus opens the switching contact 22. The resistor 21 now creates a series resistance for the control device which reduces the voltage across the control device to a suitable value. This lowering of the voltage is undesirable in the drives condition. Now, however, the ballast resistor 21 increases the reaction time of the control device in an unfavorable way when voltage is applied to the terminals 13, 12. To avoid this unfortunate effect, the resistor 21 is shunted with a capacitor 24 in parallel connection with a relatively large resistor 25. But precisely then the capacitor 24 would cause welding of the coupling contact 22 at the end, a direct shunting of the resistor 21 is not advisable, and the capacitor 24 is therefore connected to the direct voltage output of the Gratz bridge 23. Thus, the capacitor can briefly act to shunt the resistance, but can no longer discharge itself over relay contact 22 in a dangerous manner.

Claims (1)

Anordning til lastomkobling ved trinntransformatorerDevice for load switching at step transformers ved hjelp av styrte halvlederlikeretter-apparater i begge velgerarmer uten overkoblingsmotstand og kvelespoler, hvor styreapparater som med sine innganger ligger parallelt; med de styrbare halvlederlikeretter-apparater og med sine utganger mater det respektive 1 den annen velj;er-arm liggende styrbare nalvlederlikeretter-apparat, samt et paralielc med inngangen liggende RC-ledd forer lastrommen noen få iicrosek uncer under omkoblingen etter muligjennomgang av stronjm m uten at der på dem opptrer noen vesentlig spenning sammenholdt med trinnspennin.jen, og hvor denne lille spenning over en kondensator os en dermed seriekoblet transformator bevirker tenning av dent ilsluttede styrbare halvlederlikeretter og selv den vesentlig hdyere trinnspenning over dette kondensatoroverforingsledd og et ytterligere den:,ed parallellkoblet motstandsoverfdringsledd bare frembringer styrestromr. er av tilstrekkelij storrelse, som adderes på transformatorens sekundærsider og som fdlje av sin faseforskyvning gir den nodvendige ubrutte likestrcjtii, karakterisert ved at der med. styreapparatene (1, fig. 1) er seriekoblet et forkoblingsapparat (2) bestående av en koblingskontakt (22) som er innkoblet i lednings foringen for tilslutning::! édningen (13, II) og innkoblet i diagonalen av en Gratzbro (23), o;; som er shuntet med en motstand '(21) ov påvirkes fra et rele" ( j) soi ligger mellom de to trinnvelgerarmer (4l, 42, fi^. 2), samt av en kondensator (24) son. er shuntet med en motstand (25) og er tilsluttet Gratzbroens (2J) • 1 i ke sp enn inj3s u t gang.by means of controlled semiconductor rectifier devices in both selector arms without switching resistance and choke coils, where control devices with their inputs are in parallel; with the controllable semiconductor rectifier devices and with its outputs it feeds the respective 1 the other selector arm lying controllable nal conductor rectifier device, as well as a paralielc with the input lying RC link lines the cargo compartment a few iicrosec unces during the switching after re-review of the stronjm m without that some significant voltage appears on them compared to the step voltage, and where this small voltage across a capacitor and a transformer connected in series with it causes ignition of the electrically connected controllable semiconductor rectifier and even the significantly higher step voltage across this capacitor transfer link and a further parallel-connected resistance transfer link only produces control current. is of sufficient size, which is added to the secondary sides of the transformer and which, as a result of its phase shift, provides the necessary unbroken direct current, characterized by the fact that the control devices (1, fig. 1) are connected in series a ballast device (2) consisting of a switching contact (22) which is plugged into the cable sheath for connection::! the édningen (13, II) and connected in the diagonal by a Gratzbro (23), o;; which is shunted with a resistance '(21) ov is influenced from a relay" (j) soi lies between the two step selector arms (4l, 42, fi^. 2), as well as by a capacitor (24) son. is shunted with a resistance (25) and is connected to Gratzbroens (2J) • 1 i ke sp ennj3s u t gang.
NO16790667A 1964-09-19 1967-04-27 NO116472B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19641271820 DE1271820C2 (en) 1964-09-19 1964-09-19 ARRANGEMENT FOR SWITCHING THE LOAD FOR STEPPING TRANSFORMERS IN NATURAL ZERO PASSAGE OF THE LOAD CURRENT
DES0093243 1964-09-19
DES0104400 1966-06-23

Publications (1)

Publication Number Publication Date
NO116472B true NO116472B (en) 1969-03-31

Family

ID=27180554

Family Applications (1)

Application Number Title Priority Date Filing Date
NO16790667A NO116472B (en) 1964-09-19 1967-04-27

Country Status (9)

Country Link
BE (2) BE668266A (en)
CH (1) CH435440A (en)
DE (2) DE1271820C2 (en)
DK (1) DK133645B (en)
ES (1) ES342202A1 (en)
GB (1) GB1130739A (en)
NL (7) NL6512004A (en)
NO (1) NO116472B (en)
SE (2) SE319232B (en)

Also Published As

Publication number Publication date
NL6708051A (en) 1967-12-27
NL136228C (en)
NL130274C (en)
BE698600A (en) 1967-11-03
SE319553B (en) 1970-01-19
DK133645C (en) 1976-11-08
DE1271820C2 (en) 1973-11-22
DE1271820B (en) 1973-11-22
SE319232B (en) 1970-01-12
NL6512004A (en) 1966-03-21
GB1130739A (en) 1968-10-16
NL128998C (en)
NL273278A (en)
ES342202A1 (en) 1968-07-16
CH435440A (en) 1967-05-15
DE1563356B2 (en) 1971-12-23
DK133645B (en) 1976-06-21
NL277399A (en)
DE1563356A1 (en) 1970-05-27
BE668266A (en) 1965-12-01

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