EP1850357B1 - Indication de position pour installation de commutation électrique - Google Patents

Indication de position pour installation de commutation électrique Download PDF

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Publication number
EP1850357B1
EP1850357B1 EP06025172.5A EP06025172A EP1850357B1 EP 1850357 B1 EP1850357 B1 EP 1850357B1 EP 06025172 A EP06025172 A EP 06025172A EP 1850357 B1 EP1850357 B1 EP 1850357B1
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EP
European Patent Office
Prior art keywords
switchgear
switch
circuit breaker
switches
grounding
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.)
Active
Application number
EP06025172.5A
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German (de)
English (en)
Other versions
EP1850357A3 (fr
EP1850357A2 (fr
Inventor
Achim Stelter
Gerrit Böhm
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.)
General Electric Technology GmbH
Original Assignee
General Electric Technology GmbH
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
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Publication of EP1850357A2 publication Critical patent/EP1850357A2/fr
Publication of EP1850357A3 publication Critical patent/EP1850357A3/fr
Application granted granted Critical
Publication of EP1850357B1 publication Critical patent/EP1850357B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"

Definitions

  • the invention relates to a switch position display for an electrical switchgear, in particular for a medium or high voltage switchgear, according to the preamble of claim 1.
  • the invention further relates to an electrical switchgear, in particular medium or high voltage switchgear, according to the preamble of claim.
  • Such a shift position indicator, according to the preamble of claim 1, as well as such an electrical switchgear, according to the preamble of claim 4, is known from FR 2 366 722 A known.
  • the present invention particularly relates to so-called.
  • Compact high-voltage switchgear which are also referred to as Compact Switchgear Assemblies, according to the upcoming DIN IEC standard 62271-205 "High-voltage switchgear and switchgear - Part 205: High-voltage switchgear assemblies
  • the invention is also in gas-insulated switchgear in which the switchgear and the switches of the switchgear in a hermetically sealed and for isolation purposes with a gas, such as SF6, filled housing arranged
  • a gas such as SF6, filled housing
  • circuit breakers As an electrical switch in a switchgear, for example, circuit breakers, in particular so-called. Dead-tank circuit breaker used. Circuit breakers interrupt the flow of current through a line in the switchgear when an overcurrent or a short-circuit current or an operating current occurs. They include electromagnetic and / or thermal releases and switching contacts that interrupt the current path between the input and output terminals of the switchgear when triggered by one of the triggers. Other electrical switches commonly used in switchgear include earthing and / or disconnecting switches, individually or as a combination switch. A circuit breaker has a higher dielectric strength than a circuit breaker and serves to safely and reliably disconnect the switchgear from input lines and / or output lines.
  • a grounding switch is used to earth the switchgear in order to prevent, for example during an inspection or repair of the switchgear a risk to personnel from electric shock.
  • earthing and / or circuit breakers are usually not able to turn on electricity. For this reason, both earthing and disconnecting switches are always switched off when the circuit breaker is open.
  • An electrical switchgear comprises at least two connections that can be connected to each other via the switchgear or separated from each other.
  • the connections are, for example, connected to overhead lines, consumers of any kind (eg transformer, capacitor bank) and / or busbars.
  • To disconnect and ground a first connection the circuit breaker is first turned off. Then the disconnector is de-energized. Subsequently, the earthing switch is also switched on without power. Finally, the power switch is turned on so that the first terminal is disconnected from the second terminal and the switchgear is grounded.
  • This type of grounding where the earthing switch is only used to prepare grounding, but the actual grounding only by Closing the circuit breaker is also referred to as integral grounding. It allows a much simpler and more cost-effective in terms of electrical requirements of the earthing switch, since the high demands on the KurzInstituteinschaltfix be met by the circuit breaker.
  • the circuit breaker is first turned off. Then the earthing switch is de-energized. Thereafter, the circuit breaker is turned on without power. Finally, the circuit breaker is turned on again so that the first terminal is reconnected to the second terminal.
  • each switch of a switchgear has a separate switch position indicator, which is located in close proximity to the switch and is mechanically coupled to the switch.
  • the switch position display includes, for example, the representation of "0" for an open switch and "1" for a closed switch. The display can also be highlighted in color, for example, green for the open and red for the closed switch.
  • the recognition The current operating state of the switchgear is therefore complicated and only trained personnel possible in the prior art, which can interpret the various switching states correctly and combine with each other.
  • the recognition of the current operating state is also extremely prone to error, especially in dangerous and emergency situations.
  • the switch position indicators are often arranged on the back of the switchgear and therefore difficult to read.
  • ABB has arranged a switchgear diagram of the switchgear with switching symbols for the various switch positions in the switchgear cabinets of the type "Pass M0".
  • the switching symbols are electrically controlled by means of an auxiliary voltage and reflect the current switching state of the switches of the switchgear.
  • the current switching position of the switch is detected and transmitted by electrical means to the switching symbols or to suitable controller of the symbols in the switching cabinet associated control cabinet. It is conceivable, for example, a transmission via a data bus or via a radio link.
  • the current operating state of the switchgear of untrained personnel can be recorded simply and easily.
  • the switchgear "Pass M0" still has the mechanical switching indicators in the immediate vicinity of the various switches on the back of the switchgear. As a result, a detection of the switch positions should be made possible even if the auxiliary voltage fails.
  • the disadvantage is that in the known switchgear a double effort for the mechanical and the electrical switching position display is required and that in case of failure of the auxiliary voltage detecting switching state based on the mechanical display is extremely expensive and error-prone.
  • From the EP 0 631 360 A2 is a method and apparatus for monitoring the position of a switch, such as a switchgear, described by means of an auxiliary voltage.
  • a switch such as a switchgear
  • an auxiliary device is known, which is flanged to a switch of a switchgear, is coupled to the switch and generates a current switch position corresponding electrical signal which is transmitted via a fieldbus to an electrical switching position indicator.
  • a corresponding additional device is known in which the current switch position corresponding electrical signal is transmitted wirelessly by means of transponder and antenna via a radio link to the switch position display.
  • the present invention Based on this prior art, the present invention, the object of a switch position display of the type mentioned in such a way to design and develop that with a minimum of effort and the lowest possible cost a simple and straightforward determination of the current switching positions of the switches of the switchgear and the current operating state of the switchgear is possible.
  • the switch position display according to the invention has the advantage that no longer as before two separate displays, namely an electrical with mimic diagram in easily accessible front area of the switchgear and a mechanical security in the rear area of the switchgear, are required. Rather, the function of both switch position indicators is combined according to the invention in a single. In this case, both a simple and clear output of the switch positions (by the mimic diagram) and safety aspects (by the mechanical coupling of the display of the switching position with the switch) are taken into account. In the display of the switch positions in the mimic diagram, the operating states of the switchgear are taken into account, wherein the earthing switch is only shown as closed when both the earthing switch and the circuit breaker are closed. As a result, misinterpretations of the displayed switch positions can be almost excluded; the reliability of the switchgear is increased.
  • a first switch of the switchgear whose switching position is displayed in the mimic diagram comprises a circuit breaker of the switchgear. Additionally it is suggested that a second switch of the switchgear whose switching position is displayed in the mimic diagram, a disconnector and / or earthing switch of the switchgear includes.
  • the switchgear can individual isolation and / or earthing switch or combination switch, as for example.
  • the combined disconnector and earthing switch includes a grounding switch and a busbar connected to each switchgear.
  • the disconnector and earthing switch described in the cited document has three positions: closed, disconnected (ungrounded), earthed (and disconnected).
  • the indication of the switching position of the earthing switch does not indicate the completion of a grounding operation until the earthing switch and the circuit breaker associated therewith are both closed.
  • the switching position display can be taken directly from the operating state of the switchgear without the switching states of the individual switches must be interpreted or combined with each other to determine the operating state of the switchgear.
  • the switch position indicator shows the switching symbol of the earthing switch as open until the assigned circuit breaker is also closed and the switchgear is actually earthed.
  • the display of the switch position of the at least one switch of the switchgear comprises at least one switch symbol.
  • the representation of the switch position by means of symbols is particularly clear and quick and easy to detect. As a result, errors in detecting the switch position can be further reduced.
  • the mechanical coupling takes place at least partially positively.
  • the mechanical coupling can be formed positively in all directions of movement.
  • FIGS. 1 to 3 an electrical switchgear is shown, which may be designed in particular as a medium or high voltage switchgear, wherein the Figures 1 and 2 a switchgear according to the invention and the FIG. 3 shows a known from the prior art switchgear.
  • the switchgear is preferably designed as a so-called.
  • Compact high-voltage switchgear which is also referred to as Compact Switch Gear Assembly, according to the upcoming DIN IEC 62271-205 "High-voltage switchgear and switchgear - Part 205: High-voltage switchgear assemblies for rated voltages above 52 kV ", which already has a draft.
  • GIS gas-insulated switchgear
  • AIS air-insulated switchgear
  • the well-known switchgear off FIG. 3 is designated in its entirety by the reference numeral 10. It includes, for example, a current transformer 11, a circuit breaker 12 and a combined disconnector and earthing switch 13. Disconnecting and earthing switch 13 may also be formed as a separate switch, but for space, weight and cost reasons makes a combination of the two switches sense.
  • the connections are, for example, connected to overhead lines, consumers of any kind (eg transformer, capacitor banks) and / or busbars.
  • the left terminal is connected to a bus bar 19 formed as a single bus bar.
  • a current transformer 11 serves to measure a current flowing through the switchgear 10.
  • Each of the switches 12, 13 of the known switchgear 10 is associated with a mechanical switch position indicator 14, which is formed in the illustrated example as a preferably arranged on the back of the switchgear 10 circular display 14.
  • the display 14 comprises a circular aperture 15 with openings 16 at 12 o'clock and at 6 o'clock, as well as a diaphragm 15 behind the stored, also circular display disc 17, on the color-coded symbols ("0" on a green background for an open switch position and "1 "on a red background for a closed switch position) are shown.
  • the rotatable display disk 17 is mechanically coupled to the switching elements of the switches, so that a switching movement of a switch 12, 13 leads to a rotational movement of the indicator disk 17.
  • the known switchgear has an electromechanical switch position indicator 18, which reproduces the position of the switches 12, 13.
  • the display 18 is preferably arranged on the front side of the switchgear 10, in the field of vision of the personnel, for example in a control cabinet of the switchgear 10.
  • the display 18 comprises a mimic diagram of the switchgear 10 with switching symbols for the individual switches 12, 13.
  • To output the switching state of one of the switches 12, 13, the position of a switch 12, 13 is recorded, an electrical signal corresponding to the switching position is generated, the signal transmitted via electrical lines to the display 18 and where necessary processed, then finally the display elements, for example.
  • the signal lines for the transmission of the electrical signal from the switches 12, 13 to the display 18 are designated by the reference numeral 20.
  • the display 18 thus necessarily requires the electrical signal or an auxiliary voltage for receiving the position of the switches 12, 13 and for generating the electrical signal.
  • the positions of the switches 12, 13 on the mechanical display 14 on the back of the switchgear 10 must be read individually.
  • the Operating state of the switchgear 10 must be determined by interpreting or combining the switching states of the individual switches 12, 13 by trained personnel. This procedure is very complicated, time-consuming and error prone.
  • the already existing high breaking capacity of the circuit breaker 12 is used to reduce the electrical requirements of the earthing switch 13 can. This is achieved by first closing the interposed grounding switch 13 when the circuit breaker 12 is open and the circuit breaker 13 is open, without any appreciable current flowing. Thereafter, the circuit breaker 12 is closed again and completed the grounding process.
  • the earthing switch 13 is therefore only used for earthing in integral earthing, the actual grounding then being effected by closing the circuit breaker 12. This difference must be clearly recognizable to the user by suitable measures, since otherwise there is the danger that the user detects an alleged grounding of the switchgear 10, although this is actually not grounded, which is too injury to the user's death may result from electric shock.
  • a separate switch position indicator 14 of the circuit breaker 12 and the disconnector-earthing combination 13 does not allow a safe representation of the circuit breaker state in systems with integral grounding.
  • the color-coded symbols in the windows 16 of the panel 15 of the display 14 are unsuitable because the symbol "0" on a green background in the case of a grounding switch 13 is activated, the grounding process is complete, although the grounding is initially only prepared.
  • a safe representation of the operating state of the switchgear 10 (grounded or not) is only guaranteed if the position of the circuit breaker 12 and the disconnector-earthing combination 13 is reproduced together in a mimic diagram.
  • a relatively simple solution is the display 18 with a mimic diagram with electromechanically actuated switch symbols.
  • this display 18 has the disadvantage that in a power failure, no reliable display is possible and thus the additional mechanical display 14 is indispensable.
  • FIG. 1 an inventive electrical switchgear according to a first embodiment is designated in its entirety by the reference numeral 1.
  • the switchgear 1 comprises at least two terminals which can be connected to each other via the switchgear 1 or separated from each other.
  • the connections are, for example, connected to overhead lines, consumers of any kind (eg transformer, capacitor bank) and / or busbars 3.
  • the switchgear 1 comprises a circuit breaker 4 and a disconnector and earthing switch combination 5.
  • a switching element 6 'of the circuit breaker 4 can be switched between an open position and a closed position.
  • a switch element 6 "of the switch combination 5 can be switched over between a closed position (disconnect switch closed, earthing switch open) and an open position (disconnector open, earthing switch closed.)
  • a closed position disconnect switch closed, earthing switch open
  • an open position disconnector open, earthing switch closed.
  • at least one intermediate position may also be provided ( disconnected but not grounded).
  • the power switch 4 is turned off. Then, the circuit breaker 5 is turned off. Subsequently the earthing switch 5 is also turned on without power. Finally, the circuit breaker 4 is turned on again, so that the first terminal is disconnected from the second terminal and the switchgear 1 is grounded.
  • This type of grounding in which the earthing switch 5 only serves to prepare the earthing, but the actual grounding takes place only by closing the circuit breaker 4, is also referred to as integral earthing.
  • the power switch 4 is first turned off. Then the earthing switch 5 is switched off without power. Thereafter, the circuit breaker 5 is turned on without power. Finally, the power switch 4 is turned on again, so that the first terminal is again connected to the second terminal.
  • the switchgear comprises a purely mechanically operated display device 7.
  • Display device 7 is preferably arranged in the front area of the switchgear 1, which is easily visible to the personnel, for example, in a control cabinet of the switchgear 1.
  • a switch symbol 8 ', 8 " is, for example, via a mechanical coupling device (eg coupling rods, coupling and / or reversing gear, etc.) 9 with the corresponding movable switching element 6', 6" one of the switches 4, 5 connected.
  • the display device 7 according to the invention provides a more reliable function, a better understanding of the switching sequence and thus increased safety for the operator and a central reading possibility of the switch positions of all switches 4, 5 of the switchgear.
  • due to the mechanical actuation of the display device 7 on the additional mechanical switching displays of the individual switches 4, 5 are dispensed with on the back of the switchgear 1.
  • a second embodiment of a switchgear 1 according to the invention FIG. 2 is connected via its left connection to a double busbar comprising two separate busbars 3 ', 3 "
  • the disconnecting and earthing switch combination 5 of the switchgear 1 also comprises two movable disconnecting switch elements 6' and 6" and one movable earthing switching element 6 "' 4 comprises a movable switch element 6 "".
  • the display device 7 'of the switchgear 1 figure 2 or the individual switch symbols 8 'to 8 "" of the display 7' (cf. FIG. 5 ) are respectively connected to the monitored switches 4, 5 and the switch elements 6 'to 6 "" via a mechanical coupling device 9 in connection.
  • Each of the movable switch elements 6 'to 6 "" of the switches 4, 5 is connected in a purely mechanical manner, at least without an intermediate conversion of the switching movement into a corresponding electrical signal with the switch symbols 8' to 8 "" of the mimic diagram of the display device 7 ' ,
  • the switch symbols 8 "or 8"'of the earthing switch elements 6 "or 6"' only indicate a closed position in the displays 7 or 7 'when the integral circuit breaker elements 6' , 6 "" are closed and the actual grounding is thus actually completed. If only the earthing switch 6 “and 6"'is closed, but the corresponding circuit breaker 6' or 6 "” is not yet, the earthing is merely prepared and not yet completed. In such a case, the switch symbols 8 "and 8"'should remain in the open position to prevent the accidental detection of a grounding of the switchgear 1. The corresponding activation of the switch symbols 8 "or 8"'and 8 “” also takes place in purely mechanical ways.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (5)

  1. Indicateur de position (7, 7') pour un appareillage électrique (1), en particulier pour un appareillage à moyenne ou haute tension, comprenant un schéma synoptique d'au moins une partie de l'appareillage (1) et, dans le schéma synoptique, un indicateur de la position d'au moins un interrupteur de l'appareillage (1), dans lequel un premier interrupteur de l'appareillage (1), dont la position est indiquée dans le schéma synoptique, comprend un disjoncteur (4) de l'appareillage (1), dans lequel un deuxième interrupteur de l'appareillage (1), dont la position est indiquée dans le schéma synoptique, comprend un sectionneur et/ou interrupteur de mise à la terre (5) de l'appareillage (1), dans lequel un couplage purement mécanique (9) est réalisé entre les deux interrupteurs (4, 5) de l'appareillage (1) et l'indicateur de la position des deux interrupteurs (4, 5), caractérisé par le fait que l'indicateur de la position de l'interrupteur de mise à la terre (5) n'indique la fin d'une opération de mise à la terre que lorsque l'interrupteur de mise à la terre (5) et le disjoncteur (4) qui lui est associé sont fermés.
  2. Indicateur de position (7, 7') selon la revendication 1, caractérisé par le fait que l'indicateur de la position des deux interrupteurs (4, 5) de l'appareillage (1) comprend respectivement un symbole d'interrupteur (8', 8", 8"', 8"").
  3. Indicateur de position (7, 7') selon l'une quelconque des revendications 1 ou 2, caractérisé par le fait que le couplage mécanique se fait au moins en partie à engagement positif.
  4. Appareillage électrique (1) en particulier appareillage à moyenne ou haute tension, comprenant un indicateur de position (7, 7') ayant un schéma synoptique d'au moins une partie de l'appareillage (1) et, dans le schéma synoptique, un indicateur de la position d'au moins un interrupteur de l'appareillage (1), dans lequel un premier interrupteur de l'appareillage (1), dont la position est indiquée dans le schéma synoptique, comprend un disjoncteur (4) de l'appareillage (1), dans lequel un deuxième interrupteur de l'appareillage (1), dont la position est indiquée dans le schéma synoptique, comprend un sectionneur et/ou interrupteur de mise à la terre (5) de l'appareillage (1), dans lequel l'appareillage (1) comprend entre les deux interrupteurs (4, 5) de l'appareillage (1) et l'indicateur de la position des deux interrupteurs (4, 5) un élément de couplage mécanique (9) pour coupler d'une manière purement mécanique les deux interrupteurs (4, 5) et l'indicateur de la position d'interrupteur, caractérisé par le fait que l'indicateur de la position de l'interrupteur de mise à la terre (5) n'indique la fin d'une opération de mise à la terre que lorsque l'interrupteur de mise à la terre (5) et le disjoncteur (4) qui lui est associé sont fermés.
  5. Appareillage (1) selon la revendication 4, caractérisé par le fait que l'indicateur de position (7, 7') est réalisé selon l'une quelconque des revendications 2 ou 3.
EP06025172.5A 2006-04-25 2006-12-06 Indication de position pour installation de commutation électrique Active EP1850357B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610019605 DE102006019605A1 (de) 2006-04-25 2006-04-25 Schaltstellungsanzeige für eine elektrische Schaltanlage

Publications (3)

Publication Number Publication Date
EP1850357A2 EP1850357A2 (fr) 2007-10-31
EP1850357A3 EP1850357A3 (fr) 2008-05-07
EP1850357B1 true EP1850357B1 (fr) 2017-02-22

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EP06025172.5A Active EP1850357B1 (fr) 2006-04-25 2006-12-06 Indication de position pour installation de commutation électrique

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EP (1) EP1850357B1 (fr)
CN (1) CN101064418A (fr)
DE (1) DE102006019605A1 (fr)

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN104809964A (zh) * 2015-05-22 2015-07-29 八达电气（昆山）有限公司 电力电气控制符号动态指示器件

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Publication number Priority date Publication date Assignee Title
DE1799296U (de) * 1958-09-17 1959-11-05 Concordia Maschinen Und Elek Z Mechanische stellungsanzeigevorrichtung fuer steckhebelantriebe.
FR2366722A1 (fr) * 1976-07-28 1978-04-28 Henry Baulier Synoptique a voyants mecaniques actionnes par flexibles
DE3802207A1 (de) * 1988-01-26 1989-07-27 Concordia Sprecher Schalt Vorrichtung zur anzeige der schaltstellung von mehrstellungs-lasttrennschaltern
DE19900219B4 (de) * 1999-01-07 2006-07-20 Fritz Driescher KG Spezialfabrik für Elektrizitätswerksbedarf GmbH & Co Verriegelungsvorrichtung
DE10044058C1 (de) * 2000-08-31 2001-12-13 Siemens Ag Elektrischer Schalter
AT7145U1 (de) * 2003-03-26 2004-10-25 Alstom Austria Ag Gekapselte elektrische schaltzelle für hochspannung

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Publication number Publication date
CN101064418A (zh) 2007-10-31
DE102006019605A1 (de) 2007-10-31
EP1850357A3 (fr) 2008-05-07
EP1850357A2 (fr) 2007-10-31

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