DK161997B - CONNECTING TO CREATE A MULTIPLY DERIVATED DERIVATIVE POWER SUPPLY TO AN ERROR POWER PROTECTION RELAY BY AUTHORIZATION. - Google Patents

CONNECTING TO CREATE A MULTIPLY DERIVATED DERIVATIVE POWER SUPPLY TO AN ERROR POWER PROTECTION RELAY BY AUTHORIZATION. Download PDF

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Publication number
DK161997B
DK161997B DK536079A DK536079A DK161997B DK 161997 B DK161997 B DK 161997B DK 536079 A DK536079 A DK 536079A DK 536079 A DK536079 A DK 536079A DK 161997 B DK161997 B DK 161997B
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DK
Denmark
Prior art keywords
conductor
rectifiers
protection relay
relay
power supply
Prior art date
Application number
DK536079A
Other languages
Danish (da)
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DK161997C (en
DK536079A (en
Inventor
Richard Meyer
Original Assignee
Schupa Elektro Gmbh & Co Kg
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Filing date
Publication date
Application filed by Schupa Elektro Gmbh & Co Kg filed Critical Schupa Elektro Gmbh & Co Kg
Publication of DK536079A publication Critical patent/DK536079A/en
Publication of DK161997B publication Critical patent/DK161997B/en
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Publication of DK161997C publication Critical patent/DK161997C/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00Details of emergency protective circuit arrangements
    • H02H1/06Arrangements for supplying operative power

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  • Emergency Protection Circuit Devices (AREA)
  • Rectifiers (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Description

iin

DK 161997 BDK 161997 B

i 5 Opfindelsen angår en kobling ifølge indledningen til kravet.The invention relates to a coupling according to the preamble to the claim.

Sædvanligvis kræver fejlstrømsbeskyttelsesrelæer ud over den af fejlstrømmen over strømtransformatoren 10 til udløserelæet tilførte energi ingen ekstra energi til udløsning. Der findes dog tilfælde# hvor det ønskes at forøge fejlstrømsbeskyttelsesrelæets følsomhed. En måde hertil er anvendelse af en ekstra energikilde.Usually, in addition to the energy supplied by the fault current over the current transformer 10 to the trigger relay, fault current protection relays require no additional energy for tripping. However, there are cases # where it is desired to increase the sensitivity of the fault current protection relay. One way to do this is to use an additional energy source.

1515

Pra tysk fremlæggelsesskrift nr. 2.653.453 kendes et fejlstrømsbeskyttelsesrelæ# der kræver en hjælpespænding for at fungere. Denne kobling forsyner relæet med hjælpespænding# selv om indtil to vilkårlige 20 ledere falder ud. Ingen af hjælpespændingens poler er imidlertid tilsluttet nullederen direkte. De herfra kendte koblinger kræver således to yderligere ensretterdioder# for at fungere# og der fås en kompliceret og kostbar kobling med mange komponenter.German German Patent Specification No. 2,653,453 discloses a fault current protection relay which requires auxiliary voltage to operate. This coupling supplies the relay with auxiliary voltage # even if two arbitrary 20 conductors fall out. However, none of the auxiliary voltage terminals are directly connected to the neutral conductor. Thus, the known couplings from this require two additional rectifier diodes # to operate # and a complicated and expensive coupling with many components is obtained.

2525

En kobling# hvor der fra det forhåndenværende flerle-dernet med nulleder over ensrettere tilsluttet faselederne frembringes en hjælpespænding# for derpå at benytte denne til frembringelse af udløsestrømmen 30 for et fejlstrømsbeskyttelsesrelæs udløserelæ# kendes fra en afhandling af C. Biegelmeier# der er offentliggjort i tidsskriftet "Elektrotechnik u. Maschinenbau*# april 1965# 82. årgang# hæfte 4# side 154-155# især fig. 9.A coupling # wherein from the present multi-conductor with zero conductor over rectifiers connected to the phase conductors, an auxiliary voltage # is then generated to use it to generate the trigger current 30 for a fault current protection relay trigger read from a thesis of C. Biegelmeier # published in "Elektrotechnik u. Maschinenbau * # April 1965 # 82. vintage # booklet 4 # pages 154-155 # especially fig. 9.

22

DK 161997 BDK 161997 B

1 Med en sådan kobling viser det sig, at ved udfald af nullederen vil forsyningsspændingen for udløserelæet mangle og fejlstrømsbeskyttelsesrelæet således ikke være funktionsdygtigt* 51 With such a coupling it turns out that in the event of failure of the neutral conductor, the supply voltage for the trigger relay will be missing and the fault current protection relay thus not functioning * 5

Det er opfindelsens formål at anvise en kobling af den angivne art, der med en forholdsvis billig og lidet pladskrævende konstruktion ved tilstedeværelse af i det mindste to vilkårlige ledere i et flerle-10 dernet med nulleder kan sikre en forsyningsspænding til udløserrelæet for et fejlstrømsbeskyttelsesrelæ, også når to vilkårlige ledere falder ud.SUMMARY OF THE INVENTION It is an object of the invention to provide a coupling of the kind specified, which with a relatively inexpensive and somewhat space-consuming construction in the presence of at least two arbitrary conductors in a multi-conductor with a zero conductor can ensure a supply voltage to the relay relay for a fault current protection relay, also when two arbitrary leaders fall out.

Dette formål kan opnås ifølge opfindelsen ved en 15 kobling med de i den kendetegnende del af kravet angivne træk.This object can be achieved according to the invention by a coupling having the features specified in the characterizing part of the claim.

Trods sin enkelthed er koblingen ifølge opfindelsen i stand til at fungere tilfredsstillende, selv om 20 to vilkårlige ledere falder ud, også selv om en af disse ledere er nullederen.In spite of its simplicity, the coupling according to the invention is capable of functioning satisfactorily, even if two two arbitrary conductors fail, even if one of these conductors is the zero conductor.

I det følgende skal opfindelsen forklares nærmere under henvisning til tegningen, hvor 25 fig. 1 viser et diagram for en kendt udførelsesform for en trefaset stjernekobling, fig. 2 et diagram for en kobling ifølge opfin-30 delsen med yderligere tre ensrettere, og fig. 3 et diagram for en forenklet kobling, hvor fire ensrettere er erstattet med 3In the following, the invention will be explained in more detail with reference to the drawing, in which FIG. 1 is a diagram of a known embodiment of a three-phase star coupling; FIG. 2 is a diagram of a coupling according to the invention with three additional rectifiers; and FIG. 3 is a diagram for a simplified coupling, where four rectifiers are replaced by 3

DK 161997 BDK 161997 B

1 fire modstande.1 four resistors.

I de i fig. 1 til 3 viste diagrammer er på tegningen de tre ledere i et trefaset net betegnet med Li, 5 L2, L3, og nullederen med N og tilslutningsklemmerne for forsyningsspændingen til udløserelæet med d og e.In the FIG. 1 to 3, in the drawing, the three conductors in a three-phase grid are denoted by Li, L5, L3, and the zero conductor by N and the connection terminals of the supply voltage to the relay relay with d and e.

I den i fig. 1 viste udførelsesform viser det sig, 10 at ved udfald af nullederen N afbrydes strømforsyningen til udløserelæet for fejlstrømsbeskyttelsesrelæet, og relæet kan ikke udkoble, når det kræves.In the embodiment shown in FIG. 1, it turns out that in the event of failure of the neutral conductor N, the power supply to the relay relay for the fault current protection relay is interrupted and the relay cannot switch off when required.

Ved den i fig. 2 viste udførelsesform kan derimod 15 to vilkårlige ledere falde Ud, uden at strømforsyningen til udløserelæet for fejlstrømsbeskyttelsesrelæet falder bort* Med de tre ekstra ensrettere D4, D5 og Dg i fig. 2 anbragt i en sædvanlig 3-fase ensretterkobling opnås, at der ved udfald af nullederen 20 N dannes et stjernepunkt ved nullederen, så der mellem klemmerne d og e opretholdes en tilstrækkelig stor spænding til at betjene udløserelæet for fejlstrømsbeskyttelsesrelæet .In the embodiment shown in FIG. 2, on the other hand, 15 two arbitrary conductors can fall out without the power supply to the relay of the fault current protection relay fading * With the three extra rectifiers D4, D5 and Dg in fig. 2 arranged in a conventional 3-phase rectifier coupling, it is obtained that upon failure of the neutral conductor 20 N, a star point is formed at the neutral conductor, so that between the terminals d and e a sufficiently large voltage is maintained to actuate the relay of the fault current protection relay.

25 Den i fig. 2 viste kobling fungerer på følgende måde:The embodiment of FIG. 2 shown as follows:

Den ved formodstandene Ri til R3 af tagne spænding, der står til rådighed ved klemmerne a, b og c tilføres ensretterne Dj - Dg. Ved tilstedeværelse af alle lederne eller i det mindste én faseleder og nullederen 30 fungerer koblingen på den måde, at hvis en faseleder Li, L2 eller L3 har et negativt potentiale, vil potentialet på den tilsvarende formodstandsklemme a, b eller c tilnærmelsesvis antage nullederen Ν’s potentiale, idet der vil løbe en strøm igennem den tilsva- 4The at the resistors R 1 to R 3 of the voltage taken at the terminals a, b and c are supplied to rectifiers Dj - Dg. In the presence of all the conductors or at least one phase conductor and the neutral conductor 30, the coupling functions in such a way that if a phase conductor Li, L2 or L3 has a negative potential, the potential of the corresponding resistor terminal a, b or c will approximate the potential of the neutral conductor Ν , as a current will flow through it 4

DK 161997 BDK 161997 B

1 rende formodstand Ri, R2 eller R3. Ved udfald af nullederen N, eller nullederen og en faseleder, vil koblingen fungere som en sædvanlig helbølge trefase-ensretterkobling, henholdsvis tofase-ensretterkobling.1 running resistance R1, R2 or R3. Upon failure of the zero conductor N, or the neutral conductor and a phase conductor, the coupling will function as a conventional full-wave three-phase rectifier coupling, or two-phase rectifier coupling, respectively.

5 Herved sikres, at der ved tilstedeværelse af i det mindste to vilkårlige ledere altid står en hjælpespænding U2 til rådighed ved klemmerne d og e. Hjælpespændingen ϋ2 er, alt efter forholdene i flerledernettet med alle ledere tilstede, én leder mangler, to 10 ledere mangler, nullederen mangler, en jævnspænding med overlejret vekselspænding (fuldbølgeensretning) eller en pulserende ensrettet spænding. Ved tilslutning af passende konstruktionselementer til klemmerne d og e kan hjælpespændingen stabiliseres og udglattes« 155 This ensures that in the presence of at least two arbitrary conductors, an auxiliary voltage U2 is always available at terminals d and e. The auxiliary voltage ϋ2 is, depending on the conditions in the multi-conductor network with all conductors, one conductor missing, two 10 conductors missing. , the zero conductor is missing, a DC with superimposed alternating voltage (full wave direction) or a pulsating unidirectional voltage. By connecting appropriate structural elements to terminals d and e, the auxiliary voltage can be stabilized and smoothed '15

Den i fig. 3 viste kobling afviger fra den i fig.The FIG. 3 differs from the coupling shown in FIG.

2 viste ved, at fire ensrettere ud af seks kan undværes. Ensretterne D]_, D3 og D5 erstattes af modstande R4, R5 og Rg. I stedet for ensretteren D2 forefindes 20 en direkte forbindelse mellem klemmerne b og e.2 showed that four rectifiers out of six can be avoided. Rectifiers D1, D3 and D5 are replaced by resistors R4, R5 and Rg. Instead of rectifier D2, there is a direct connection between terminals b and e.

Koblingen fungerer på følgende måde:The coupling works as follows:

Den ved formodstandene Ri til R3 udtagne og til klem-25 merne a, b og c til rådighed stående spænding føres til en kobling, der består af modstandene R4, R5 og Rg og af ensretterne Di Og D2. Hjælpespændingen U2 er, alt efter forholdene i flerledernettet med alle lederne tilstede, én leder mangler, to ledere 30 mangler, nullederen mangler, en pulserende ensrettet eller sinusformet spænding. Ved tilslutning af passende elektriske konstruktionselementer, heriblandt et ensretter element, til klemmerne d og e kan hjælpespændingen stabiliseres og udglattes, og såledesThe voltage available at the resistors R1 to R3 and to the terminals a, b and c available at terminals 25 is applied to a coupling consisting of resistors R4, R5 and Rg and by rectifiers Di and D2. The auxiliary voltage U2 is, depending on the conditions in the multi-conductor network with all the conductors present, one conductor missing, two conductors 30 missing, the null conductor missing, a pulsed unidirectional or sinusoidal voltage. By connecting appropriate electrical structural elements, including a rectangular element, to terminals d and e, the auxiliary voltage can be stabilized and smoothed, and thus

DK 161997 BDK 161997 B

5 1 levere den nødvendige energi til udløserelæet.5 1 supply the necessary energy for the trigger relay.

5 10 15 20 25 305 10 15 20 25 30

Claims (2)

1 PATENTKRAV1 PATENT REQUIREMENT 5 Koblingsanordning til dannelse af en fra et fler- ledernet bestående af tre faseledere (Εχ# E2* og en nulleder (N) afledet strømforsyning til et fejlstrømsbeskyttelsesrelæ# hvorhos der ved de enkelte faseledere (Εχ# E2# E3) er ført tilsluttede modstande (RI# R2# R3) og i serie hermed liggende ensrettere (Di# D2# D3) til en første pol (e) for hjælpespændingskilden# og hvor der fra forbindelsespunkterne imellem de til de enkelte faseledere tilsluttede modstande og de i serie hermed liggende ensrettere X5 er ført yderligere ensrettere (D4/ D5# Dg) til den anden pol (d) for hjælpespændingskilden# kendetegnet ved# at de yderligere ensrettere (D4# D5# D$) er lagt mod nullederen (N)# der direkte danner den anden pol (d) for hjælpespændingskilden (II2). 20 25 305 Switching device for forming a power supply from a multi-conductor network consisting of three phase conductors ((# E2 * and a zero conductor (N)) for a fault current protection relay #, where the resistors (Εχ # E2 # E3) are connected ( RI # R2 # R3) and in series therewith rectifiers (Di # D2 # D3) to a first pole (s) of the auxiliary voltage source # and where from the connection points between the resistors connected to the individual phase conductors and the series rectifiers X5 are fed further rectifiers (D4 / D5 # Dg) to the second pole (d) for the auxiliary voltage source # characterized by # that the additional rectifiers (D4 # D5 # D $) are applied to the zero conductor (N) # directly forming the second pole (d) for the auxiliary voltage source (II2)
DK536079A 1978-12-23 1979-12-17 CONNECTING TO CREATE A MULTIPLY DERIVATED DERIVATIVE POWER SUPPLY TO AN ERROR POWER PROTECTION RELAY BY AUTHORIZATION. DK161997C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2855923 1978-12-23
DE19782855923 DE2855923A1 (en) 1978-12-23 1978-12-23 CIRCUIT ARRANGEMENT FOR GENERATING A POWER SUPPLY DERIVED FROM A MULTIPLE WIRE NETWORK FOR RECTIFIER CURRENT SWITCHES BY RECTIFIER

Publications (3)

Publication Number Publication Date
DK536079A DK536079A (en) 1980-06-24
DK161997B true DK161997B (en) 1991-09-02
DK161997C DK161997C (en) 1992-03-16

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Application Number Title Priority Date Filing Date
DK536079A DK161997C (en) 1978-12-23 1979-12-17 CONNECTING TO CREATE A MULTIPLY DERIVATED DERIVATIVE POWER SUPPLY TO AN ERROR POWER PROTECTION RELAY BY AUTHORIZATION.

Country Status (8)

Country Link
AT (1) AT390855B (en)
BE (1) BE880159A (en)
DE (1) DE2855923A1 (en)
DK (1) DK161997C (en)
ES (1) ES487207A1 (en)
FR (1) FR2445050A1 (en)
IT (1) IT1127721B (en)
NL (1) NL187289C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938068A1 (en) * 1979-09-20 1981-04-02 Siemens AG, 1000 Berlin und 8000 München CIRCUIT ARRANGEMENT, ESPECIALLY FOR MULTIPOLE RECTIFIER CIRCUIT BREAKERS
FR2549287B1 (en) * 1983-07-13 1988-07-29 Etude Realisation Disjoncteurs DEVICE FOR DIFFERENTIAL CIRCUIT BREAKER FOR MAINTAINING PROTECTION IN THE EVENT OF NEUTRAL CUT
FR2553943B1 (en) * 1983-10-24 1986-04-11 Merlin Gerin RESIDUAL DIFFERENTIAL DEVICE PROVIDED WITH A DEVICE FOR MONITORING THE ELECTRONIC POWER SOURCE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2096904B2 (en) * 1970-07-15 1973-06-08 Comp Generale Electricite
DE2653453C3 (en) * 1976-11-25 1986-10-02 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Circuit arrangement for an auxiliary voltage derived from the mains voltage via rectifier elements for multi-pole residual current circuit breakers
NL176508C (en) * 1977-06-14 1985-04-16 Hazemeijer Bv NUTRITION EQUIPMENT FOR A PROTECTION DEVICE, SUCH AS AN EARTH DETECTION DEVICE, AND PROTECTION EQUIPMENT EQUIPPED WITH SUCH A NUTRITION EQUIPMENT.

Also Published As

Publication number Publication date
NL187289B (en) 1991-03-01
BE880159A (en) 1980-03-17
DE2855923A1 (en) 1980-07-10
ES487207A1 (en) 1980-09-16
DK161997C (en) 1992-03-16
NL7908131A (en) 1980-06-25
FR2445050A1 (en) 1980-07-18
ATA719979A (en) 1989-12-15
AT390855B (en) 1990-07-10
DK536079A (en) 1980-06-24
NL187289C (en) 1991-08-01
FR2445050B1 (en) 1985-05-17
IT1127721B (en) 1986-05-21
IT7928059A0 (en) 1979-12-17
DE2855923C2 (en) 1988-08-11

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