WO2000017981A1 - Dispositif d'alimentation en energie pour appareils de protection d'installations de commutation - Google Patents

Dispositif d'alimentation en energie pour appareils de protection d'installations de commutation Download PDF

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Publication number
WO2000017981A1
WO2000017981A1 PCT/DE1999/003091 DE9903091W WO0017981A1 WO 2000017981 A1 WO2000017981 A1 WO 2000017981A1 DE 9903091 W DE9903091 W DE 9903091W WO 0017981 A1 WO0017981 A1 WO 0017981A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective
charging
voltage
switchgear
power supply
Prior art date
Application number
PCT/DE1999/003091
Other languages
German (de)
English (en)
Inventor
Jochen Ermisch
Ralf-Reiner Volkmar
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP99955807A priority Critical patent/EP1116312A1/fr
Publication of WO2000017981A1 publication Critical patent/WO2000017981A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • H02H1/063—Arrangements for supplying operative power primary power being supplied by fault current

Definitions

  • the invention relates to an energy supply device for protective devices of switchgear, in particular for medium-voltage switchgear, with a protective switch after a bridge rectifier and one after charging a charging capacitor
  • Protection device actively switched, short-circuiting the voltage supply lines, control device.
  • the protective devices are represented here by so-called overcurrent releases, which contain a release magnet and a release circuit with an output for emitting a release signal.
  • the trigger signal acts directly on a shutdown device which, in order to limit the damage, immediately prevents the supply of energy supply and distribution.
  • the protection devices are supplied with energy via an energy supply device which is fed directly from the energy supply network.
  • converter devices are used in a known manner, the correspondingly reduced conductor currents of which generate a DC voltage by means of a bridge rectifier device. The DC voltage is set to a setpoint with a voltage regulator, with which the charging capacitor in the protective device is charged immediately.
  • the power supply devices of these protective devices require, on the one hand, an ter the most diverse operating conditions safe charging of the charging capacitor and on the other hand, the full capacity of the charging capacitor must be ensured in a very short time in order to be able to interrupt the power supply very quickly in the event of faults, for example in the event of electrical short-circuits.
  • This switching process requires high power losses for the components arranged in the short circuit due to the short circuit.
  • the object on which the invention is based is to achieve the conditions required in this technology with less expenditure on switching means with considerably lower power losses and to ensure the availability of the full capacitance of the charging capacitor at all times under all operating conditions of the switchgear. According to the invention, this is achieved by features 1.1.
  • the protective switching device contains a bidirectionally controllable thyristor circuit with a series resistor connected in series. 1.2 the thyristor circuit is under the control of an arrester which ignites when the holding current is exceeded,
  • control device is realized by a current flow the voltage-carrying lines to the charging of the charging capacitor ⁇ the protective device interrupting longitudinal regulating device,
  • the bridge rectifier device is bridged on the DC side by a high-voltage capacitor.
  • the wire cross-section of the secondary-side converter device in the power supply device according to the invention is designed for the average load current. Only the dielectric strength of the wire is to be dimensioned such that it is above the ignition voltage of the conductor.
  • the high-loss energy supply devices previously designed according to the known low-voltage concept are therefore replaced by low-loss energy supply devices according to the known high-voltage concept.
  • the seconds The overload-side converter device and the bridge rectifier device are overloaded by the high-voltage capacitor, which can then assume voltage values in the range of several 100 volts.
  • the features are 2.1 the longitudinal control device is formed from a fast-acting analog controller and a low-loss switching stage controller, 2.2 the analog controller and the switching stage controller are functionally decoupled by decoupling diodes, 3.3 the longitudinal control device is controllable in such a way that in a first time period The charging capacitor is charged exclusively by the analog controller and is then taken over entirely by the switching stage controller at the beginning of a second period.
  • the transistor switch of the series regulating device is under the control influence of the optocoupler arranged in the cathode branch of the shunt regulator in such a way that the output current when the circuit breaker is switched in the event of a short circuit leads to the safe tripping thereof.
  • the analog controller immediately takes over the feed for the charging capacitor of the protective device. Since the generated output voltage is slightly below the nominal output voltage, the switching stage controller can be switched on practically without load in a short time swing. After the switching stage controller has fully settled, the analog controller is put out of operation by the shunt controller turning on and thus the optocoupler short-circuiting the gate-source path of the transistor switch.
  • the analog controller with a higher power loss balance in the first time period is thus replaced by the switching stage controller which is effective only in the second time period and has a significantly reduced power loss.
  • the combination of a fast-settling analog controller with a relatively high power loss and a switching stage controller with a correspondingly lower power loss, which becomes effective with a time delay, can also be used generally to reduce power losses overall, regardless of the power supply to protective devices.
  • the longitudinal control device is equipped with a charging current limiting circuit in front.
  • FIG. 1 depicting the prior art which has been customary up to now in the basic circuit diagram
  • FIG. 2 showing the energy supply device according to the invention in the basic circuit diagram
  • FIG. 3 representing a preferred embodiment of the energy supply device according to FIG.
  • FIG. 1 shows the basic structure of the known energy supply devices, which essentially consist of a bridge rectifier device BG and the voltage supply lines after the charging process has been completed short-circuiting control device KR are formed with the transistor switch TK. Between the converter device V.' ⁇ and the bridge rectifier device BG, a protective switching device SE is provided, with which the components are protected against the effects of high induced induction voltages in the event of network short-circuits.
  • the charging capacitor CL of the protective device SG is charged in such a way that the protective device SG immediately interrupts the energy supply in the faulty power supply unit in the event of network short-circuits by means of switching contacts (not shown).
  • FIG. 2 shows the energy supply device according to the invention with its essential functional elements, likewise in a simplified basic illustration.
  • the short-circuiting control device KR (FIG. 1) is replaced by the longitudinal control device LR.
  • the longitudinal regulating device LR is equipped with the transistor switch TU which interrupts the line for the voltage supply and which is controlled by the action of the shunt regulator SR.
  • the bridge rectifier device BG is bridged on the DC side by the high-voltage capacitor CH, which in the case of the blocking transistor switch TU is charged to a voltage value of several 100 volts.
  • the converter device WE is only burdened here during the charging process and is otherwise unloaded. Accordingly, the bridge rectifier device BG and the transistor switch TU are loaded only by an average load current of the converter device.
  • the protective switching device SE here contains a bidirectionally controllable thyristor circuit TH, which is connected in series with a series resistor RV to limit the current.
  • the thyristor circuit TR is under the control influence of the conductor AL, which ignites when the holding current of the thyristor circuit TH is exceeded. Here, too, will be on the Lär ' .
  • the output voltage UA applied to the control device is ultimately charged by the charging capacitor CL of the protective device SG to the required voltage value.
  • FIG. 3 shows further details of the energy supply device according to the invention according to FIG. 2 in a preferred embodiment, in which only the components necessary for understanding are also shown and labeled or only indicated.
  • the longitudinal control device LR essentially consists of the analog controller AN and the switching stage controller RS.
  • the transistor switch TS is under the control influence of the optocoupler OK, which is arranged directly in the cathode branch of the shunt regulator SR.
  • the optocoupler OK becomes so effective that an admissibly limited voltage value is established as the output voltage UA.
  • the longitudinal control device LR also contains the switching stage controller RS.
  • the switching stage controller RS and the analog controller AN are functionally decoupled from one another within the longitudinal control device LR by the decoupling diodes EDI, 2, so that defined functional sequences for the charging processes can take place. Since the start of the charging process is initially carried out exclusively by the analog controller AN, the switching stage controller SR can be used with its
  • Swing gear shift device SS load-free and be in a steady state in a very short time. Then the shunt controller SR is controlled by the switching stage controller SR and the gate-source Route of the transistor switch TS with the conductive transistor T short-circuited.
  • the charging current for the charging capacitor CL of the protective device SG is limited to a permissible value.

Landscapes

  • Rectifiers (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Protection Of Static Devices (AREA)

Abstract

L'invention concerne un dispositif d'alimentation en énergie pour appareils de protection (SG) d'installations de commutation, en particulier pour installations de commutation en technique moyenne tension, comprenant un dispositif à redresseur en pont (BG) monté en aval d'un dispositif de circuit de protection (SE), et un dispositif de régulation, monté actif après rechargement d'un condensateur de charge (CL) de l'appareil de protection (SG) et court-circuitant les lignes d'amenée de tension. Le dispositif de circuit de protection (SE) comprend un circuit à thyristor (TR) à commande bidirectionnelle, avec résistance additionnelle (RV) montée en série. Le circuit à thyristor (TR) est sollicité par la commande d'une dérivation d'amorçage (AL) lorsqu'on dépasse le courant de maintien, le dispositif de régulation étant constitué par un régulateur en phase (LR) interrompant le flux de courant des lignes d'amenée de tension, après rechargement du condensateur de charge (CL) de l'appareil de protection (SG). Le dispositif redresseur en pont (BG) est shunté, côté courant continu, par un condensateur haute tension (CH). De tels dispositifs d'alimentation en énergie sont utilisés en liaison avec des appareils de protection d'installations de commutation pour l'alimentation et la distribution d'énergie.
PCT/DE1999/003091 1998-09-22 1999-09-22 Dispositif d'alimentation en energie pour appareils de protection d'installations de commutation WO2000017981A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99955807A EP1116312A1 (fr) 1998-09-22 1999-09-22 Dispositif d'alimentation en energie pour appareils de protection d'installations de commutation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19845779.0 1998-09-22
DE1998145779 DE19845779A1 (de) 1998-09-22 1998-09-22 Energieversorgungseinrichtung für Schutzgeräte von Schaltanlagen

Publications (1)

Publication Number Publication Date
WO2000017981A1 true WO2000017981A1 (fr) 2000-03-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/003091 WO2000017981A1 (fr) 1998-09-22 1999-09-22 Dispositif d'alimentation en energie pour appareils de protection d'installations de commutation

Country Status (4)

Country Link
EP (1) EP1116312A1 (fr)
CN (1) CN1319269A (fr)
DE (1) DE19845779A1 (fr)
WO (1) WO2000017981A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954038A1 (de) * 1999-10-29 2001-05-03 Siemens Ag Schaltungsanordnung mit einer Kapazität als Energiespeicher zur Betätigung des Auslösemagneten eines Niederspannungs-Leistungsschalters und Verfahren zur Aufladung der Kapazität
DE102007058877A1 (de) * 2007-12-05 2009-06-18 Sartorius Ag Strombegrenzungsschaltung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE553522T1 (de) * 2000-12-28 2012-04-15 Abb Technology Ag Verbesserte mittelspannungs-schaltvorrichtung
DE102010033238A1 (de) * 2010-07-29 2012-02-02 Siemens Aktiengesellschaft Leistungsschalter und Einrichtung zur Überwachung eines Leistungsschalters
DE102016217425A1 (de) 2016-09-13 2018-03-15 Siemens Aktiengesellschaft Energieversorgung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155429A1 (fr) * 1984-02-24 1985-09-25 Siemens Aktiengesellschaft Montage de circuit pour la surveillance d'une tension
EP0702445A1 (fr) * 1994-09-14 1996-03-20 Siemens Aktiengesellschaft Disjoncteur de protection à courants de défaut avec circuit de stockage d'énergie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155429A1 (fr) * 1984-02-24 1985-09-25 Siemens Aktiengesellschaft Montage de circuit pour la surveillance d'une tension
EP0702445A1 (fr) * 1994-09-14 1996-03-20 Siemens Aktiengesellschaft Disjoncteur de protection à courants de défaut avec circuit de stockage d'énergie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954038A1 (de) * 1999-10-29 2001-05-03 Siemens Ag Schaltungsanordnung mit einer Kapazität als Energiespeicher zur Betätigung des Auslösemagneten eines Niederspannungs-Leistungsschalters und Verfahren zur Aufladung der Kapazität
DE102007058877A1 (de) * 2007-12-05 2009-06-18 Sartorius Ag Strombegrenzungsschaltung
US7924543B2 (en) 2007-12-05 2011-04-12 Sartorius Ag Current-limiting circuit with additional current path
DE102007058877B4 (de) * 2007-12-05 2014-11-27 Sartorius Lab Instruments Gmbh & Co. Kg Strombegrenzungsschaltung

Also Published As

Publication number Publication date
EP1116312A1 (fr) 2001-07-18
DE19845779A1 (de) 2000-03-23
CN1319269A (zh) 2001-10-24

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