EP0088155A2 - Ultraschall-Positionsmelder für Trennschalter - Google Patents

Ultraschall-Positionsmelder für Trennschalter Download PDF

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Publication number
EP0088155A2
EP0088155A2 EP82108365A EP82108365A EP0088155A2 EP 0088155 A2 EP0088155 A2 EP 0088155A2 EP 82108365 A EP82108365 A EP 82108365A EP 82108365 A EP82108365 A EP 82108365A EP 0088155 A2 EP0088155 A2 EP 0088155A2
Authority
EP
European Patent Office
Prior art keywords
signaling system
assembly
ultrasonic
contact
blade
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.)
Granted
Application number
EP82108365A
Other languages
English (en)
French (fr)
Other versions
EP0088155B1 (de
EP0088155A3 (en
Inventor
Julien Simard
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.)
Hydro Quebec
Original Assignee
Hydro Quebec
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 Hydro Quebec filed Critical Hydro Quebec
Priority to AT82108365T priority Critical patent/ATE45834T1/de
Publication of EP0088155A2 publication Critical patent/EP0088155A2/de
Publication of EP0088155A3 publication Critical patent/EP0088155A3/fr
Application granted granted Critical
Publication of EP0088155B1 publication Critical patent/EP0088155B1/de
Expired legal-status Critical Current

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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"
    • H01H9/168—Indicators for switching condition, e.g. "on" or "off" making use of an electromagnetic wave communication

Definitions

  • the present invention relates to signaling the relative position of the contacts of a high-voltage disconnect device, and more particularly relates to a signaling system intended for such a disconnect device which includes at least one movable contact element and at least one element. fixed contact - and intended to detect the relative position between this movable contact and this fixed contact.
  • Any electrical energy distribution and transport network includes disconnectors capable of energizing and isolating the transmission lines and energy devices connected to them.
  • Each disconnector generally consists of a pivoting blade which is rotated by means of a motorized mechanism and a fixed jaw provided with contact fingers subject to separation between which comes to insert the disconnector blade which is then turned around its axis to separate the contact fingers and allow the powering of a line or electrical device. It is therefore essential to obtain exact information on the relative position of the various contacts of the disconnector in order to avoid any switching error which could prove costly and so as to promote the automation scheme of the network as a whole.
  • a feature of the present invention resides in a signaling system free from the disadvantages inherent in currently known signaling systems, and which provides accurate and large information; reliability as to the relative position of each of the contacts of a disconnector, whether the latter is single-phase or three-phase.
  • Another characteristic of the present invention resides in a system capable of removing any uncertainty as to the actual position of the movable contact of a disconnector.
  • An additional feature of the present invention resides in a relatively easy and rapid installation signaling system, requiring no special tools and which can be installed on the majority of existing disconnectors.
  • the present invention relates to a signaling system intended for an electrical disconnect device including at least one movable contact element and at least one fixed contact element, this system comprising an emission assembly connected to said fixed elements and mobile of the disconnector device, for the emission of at least one ultrasonic signal signaling the relative position of the movable member and the fixed member of said disconnect device; and a set for receiving said ultrasonic signal emitted by said set for transmitting and generating an output signal representative of said relative position of the movable element and of the fixed element of the disconnector.
  • the present invention relates to a signaling system for an electrical disconnect device including at least one contact blade and at least one contact finger, said system comprising an assembly for transmitting at least one ultrasonic signal. , connected to said finger of the disconnect device, for the emission of said ultrasonic signal when said finger undergoes a movement under the action of said blade; a reception assembly receiving said ultrasonic signal transmitted by said transmission assembly; and a decoding assembly connected to said reception assembly and generating an output signal corresponding to a predetermined position of said contact finger relative to said blade, so as to signal a condition of activation or not of the disconnector.
  • the transmission assembly is mechanically active and generates two trains of ultrasonic waves of different frequencies, when actuated by a flexible control cable connected to the contact fingers, the frequency of each train d waves corresponding respectively to a separation of the contact fingers under the action of the closing of the blade of the disconnector or to a relaxation of these same fingers following the opening of the disconnector.
  • the assembly for receiving the ultrasonic waves includes reflecting surfaces which direct the ultrasonic waves to a device for transforming these waves into electrical signals, the latter signals representative of the particular frequency of a wave train are then decoded and processed in order to selective actuation of a relay for generating at the output of the receiving assembly a signal indicating the position of the blade relative to the contact fingers of the disconnector.
  • each phase is connected, at a certain strategic point in the network, to a high-voltage or very high-voltage disconnector, the main components of which are illustrated in Figure 1.
  • the disconnector comprises generally two metal structures 1 and 2 placed respectively on the concrete bases 3 and 4 connected together or not.
  • the metal structure 2 supports a column of insulators 5 made of porcelain, while the metal structure 1 supports the columns of insulators 6 and 7.
  • the columns of insulators 5 and 6 are mounted fixed on their respective metal structures while the column 7 can be driven in rotation by the motorized drive mechanism 8 or by means of the flywheel 9 and the reduction gear 10.
  • the rotation of the column 7 causes the blade 12 of the position switch to pivot.
  • the actual signaling system generally comprises an emission assembly consisting of a first ultrasonic transmitter 14 mounted at the upper end of the insulation column 5 and a second ultrasonic transmitter 15 fixed at the upper end of the insulation column 6.
  • the ultrasonic signals emitted by the transmitter 14 provide an indication of the closed or undetermined condition of the disconnector while the transmitter 15 generates ultrasonic waves representative of the open position (position A) of the blade or of any other indeterminate position located between positions "A" and "B".
  • the receiver 16 also incorporates a decoding unit which converts the ultrasonic signals received in corresponding electrical signals and which generates an output signal to a control center (not shown) in order to signal the open or closed condition of the disconnector, or the fact that the blade 12 occupies an undetermined position.
  • each transmitter comprises a flexible control cable 18 made of stainless material, a sealed housing 20 containing two pulsers and a waveguide 19 fixed to the periphery of an opening made in the housing 20.
  • Each pulser contained inside the housing 20 comprises a striker 21 or 22 associated respectively with a tuning fork 24 or 25, each striker being actuated separately by a lever 23 pivotally mounted at 23 '.
  • each tuning fork 24, 25 emits a train of ultrasonic waves of frequency different from each other which is chosen from a range of frequencies generally varying from 35 to 45 KHZ.
  • the operation of the transmission assembly is as follows. If we consider the transmitter 14 which provides information on the open or closed condition of the disconnector, the end of the control cable 18 is connected directly to one of the contact fingers 13 'then that the sleeve 18a of the cable sheath is fixed to the opposite contact finger so that a separation of these two fingers causes rotation of the lever 23 which then actuates the striker 22 which vibrates the tuning fork 25, thereby emitting a ultrasonic wave train to the receiver 16 to indicate that the disconnector is actually closed.
  • the contact fingers are released and the spacing between them decreases, which results in a thrust of the cable 18 on the lever 23, thus actuating the striker 21 which causes the emission of a train of ultrasonic waves by the tuning fork 24 indicating the indeterminate position.
  • the two wave trains generated by the transmitter 14 are of different frequencies.
  • the end of the cable 18 is connected to a pivoting lever while the sleeve 18a is mounted fixed.
  • the operating mode of the transmitter 15 is essentially the same as that described for the transmitter 14, except that in this case the two wave trains emitted by " the transmitter 15 are not only of different frequencies l ' one from the other but can also be of frequencies different from those emitted by the transmitter 14.
  • a first train of waves emitted by the transmitter 15 indicates that the blade 12 occupies an intermediate or indeterminate position between the open position "A” and the closed position "B” while the other wave train signals that the disconnector is fully open and that the blade occupies the substantially vertical position "A".
  • Each ultrasonic wave train emitted by one or the Another of the transmitters 14 or 15 is transmitted during a predetermined time of approximately 1 second and in a directional manner towards a reception assembly which will now be described with reference to FIG. 3.
  • the reception assembly illustrated in Figure 3 has the function of recognizing each of the frequencies monotones exact and of a certain duration produced by the transmitters 14 and 15 to the exclusion of any other frequency and to signal the presence of it.
  • the receiver comprises a detection element 26 sensitive to the frequencies of the ultrasonic waves emitted by the transmitters, this detection element being in this case a microphone which transforms each of the ultrasonic waves picked up into a vibration or electrical signal of the same frequency.
  • This electrical signal is then amplified using an amplifier 27.
  • the amplified signal then supplies the tone decoders 28, 29 and 30 each of which is tuned to the frequency of a transmitting pulser.
  • a logic circuit 31 made up of exclusive OR gates prevents the passage to a signal if one or more other signals are present.
  • a time constant checks the presence of this signal for at least one second, which corresponds to the time of emission of an ultrasonic wave by any of the transmitters, and finally the logic circuit activates one of the signaling relays 32 or 33, of the latching type, corresponding to the originally actuated pulsers, this in order to avoid recognizing parasitic sources by a relay once activated; an output signal is then generated to a control center to indicate one of the switch positions.
  • a pulser from the transmitter 15 signals the indeterminate position (yellow light), which eliminates the green light. This indication remains until the blade has moved the contact fingers apart enough to activate one of the pulsers of the transmitter 14 which then signals the closed position of the disconnector (red light), which eliminates the yellow fire.
  • red light the closed position of the disconnector
  • the disconnector blade for some reasons whatsoever was badly located or had to rotate less or more than 90 °, the final condition reported to the operator would be the position indeterminate. In the event of insufficient rotation, the red light would never be lit, but if the rotation was excessive the red light would then light, but only to be replaced by a yellow light a few seconds later.
  • Figure 4 illustrates the physical arrangement of the reception assembly which consists of two reflectors 34 and 35 mounted at an angle of at least 45 ° and which have the function of diverting the signals transmitted by the two transmitters 14 and 15 to a third reflector (not shown) also having an angle of about 45 ° and located under the case 36.
  • the reflectors 34 and 35 are covered with a layer of Teflon (registered trademark) in order to avoid the accumulation of snow which could absorb ultrasonic waves.
  • Teflon registered trademark
  • the latter contains the electronic elements illustrated in Figure 3 and at the bottom of which is placed the microphone 26, behind a protective grid (not shown). This bootmaker is waterproof and shielded so as to protect the elements it contains from external electrostatic and electromagnetic waves.
  • the case 36 also contains a power source for the electronic components of Figure 3.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP82108365A 1981-12-24 1982-09-10 Ultraschall-Positionsmelder für Trennschalter Expired EP0088155B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82108365T ATE45834T1 (de) 1981-12-24 1982-09-10 Ultraschall-positionsmelder fuer trennschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA393193 1981-12-24
CA000393193A CA1183593A (fr) 1981-12-24 1981-12-24 Signaleur ultrasonique de position de sectionneur

Publications (3)

Publication Number Publication Date
EP0088155A2 true EP0088155A2 (de) 1983-09-14
EP0088155A3 EP0088155A3 (en) 1985-11-13
EP0088155B1 EP0088155B1 (de) 1989-08-23

Family

ID=4121712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108365A Expired EP0088155B1 (de) 1981-12-24 1982-09-10 Ultraschall-Positionsmelder für Trennschalter

Country Status (6)

Country Link
US (1) US4451910A (de)
EP (1) EP0088155B1 (de)
JP (1) JPS58111221A (de)
AT (1) ATE45834T1 (de)
CA (1) CA1183593A (de)
DE (1) DE3279906D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0289645A1 (de) * 1987-04-16 1988-11-09 Hydro-Quebec Infrarotsignalsystem zum Erfassen eines vorbestimmten Zustandes eines Hochspannungsgeräts
EP0298069A2 (de) * 1987-06-29 1989-01-04 GEC ALSTHOM T&D GESELLSCHAFT m.b.H. Schaltstellungsmelder für Hochspannungsschaltgeräte

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5914664A (en) * 1997-07-03 1999-06-22 Allen-Bradley Company, Llc Optically sensing auxiliary switch
KR101926864B1 (ko) * 2012-06-26 2018-12-07 현대자동차주식회사 차량 배터리시스템의 릴레이모듈
EP2958123B1 (de) * 2014-06-18 2019-08-07 ABB Schweiz AG Schaltvorrichtung für ein Mittelspannungsstromverteilungsnetzwerk
CN106252119B (zh) * 2016-08-31 2018-12-21 国网山东省电力公司淄博供电公司 隔离开关监视装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745952A (en) * 1948-10-23 1956-05-15 Electricite De France Devices for operating and controlling high tension electrical apparatus
DE2711416B1 (de) * 1977-03-16 1978-08-10 Turck Werner Kg Schaltungsanordnung zur augenblicklichen Registrierung der Schalterstellungen bei einer fernbedienten Hochspannungsanlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550090A (en) * 1968-01-16 1970-12-22 Hb Eng Corp Method and system for determining whether a switch is open or closed
US4358810A (en) * 1981-01-21 1982-11-09 Westinghouse Electric Corp. Circuit breaker with alarm

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745952A (en) * 1948-10-23 1956-05-15 Electricite De France Devices for operating and controlling high tension electrical apparatus
DE2711416B1 (de) * 1977-03-16 1978-08-10 Turck Werner Kg Schaltungsanordnung zur augenblicklichen Registrierung der Schalterstellungen bei einer fernbedienten Hochspannungsanlage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0289645A1 (de) * 1987-04-16 1988-11-09 Hydro-Quebec Infrarotsignalsystem zum Erfassen eines vorbestimmten Zustandes eines Hochspannungsgeräts
EP0298069A2 (de) * 1987-06-29 1989-01-04 GEC ALSTHOM T&D GESELLSCHAFT m.b.H. Schaltstellungsmelder für Hochspannungsschaltgeräte
EP0298069A3 (en) * 1987-06-29 1990-08-29 Sprecher Energie Osterreich Gesellschaft M.B.H. Position indicator for high voltage circuit breaker

Also Published As

Publication number Publication date
DE3279906D1 (en) 1989-09-28
EP0088155B1 (de) 1989-08-23
EP0088155A3 (en) 1985-11-13
US4451910A (en) 1984-05-29
JPS58111221A (ja) 1983-07-02
JPH0139170B2 (de) 1989-08-18
CA1183593A (fr) 1985-03-05
ATE45834T1 (de) 1989-09-15

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