EP3022749A1 - Changeur de prises en charge - Google Patents

Changeur de prises en charge

Info

Publication number
EP3022749A1
EP3022749A1 EP14734774.4A EP14734774A EP3022749A1 EP 3022749 A1 EP3022749 A1 EP 3022749A1 EP 14734774 A EP14734774 A EP 14734774A EP 3022749 A1 EP3022749 A1 EP 3022749A1
Authority
EP
European Patent Office
Prior art keywords
changer
load tap
detector
cam
switching
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
EP14734774.4A
Other languages
German (de)
English (en)
Other versions
EP3022749B1 (fr
Inventor
Hubert Zwirglmaier
Jörg Atmanspacher
Andreas FREISBERG
Gerhard FELIXBERGER
Johann Jobst
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP3022749A1 publication Critical patent/EP3022749A1/fr
Application granted granted Critical
Publication of EP3022749B1 publication Critical patent/EP3022749B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • H01H9/0033—Operating mechanisms with means for indicating the selected tap or limiting the number of selectable taps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052—Linear spring motors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/44—Driving mechanisms, i.e. for transmitting driving force to the contacts using Geneva movement

Definitions

  • the invention relates to an on-load tap-changer.
  • the on-load tap-changer according to the invention comprises a switching tube, a force accumulator for setting a switching position of the switching tube, a detector for detecting a switching position of the on-load tap-changer and an on-load tap-changer transmission.
  • the on-load tap-changer transmission mechanically couples the energy accumulator to the switching tube.
  • On-load tap-changers (abbreviated to OLTC) are well-known and commonly used in the prior art They are used for the uninterrupted switching between different winding taps of tapped transformers, and on-load tap-changers are divided into load selectors and diverter switches with selectors.
  • Both types of on-load tap-changers are actuated by a motor drive (preferably electric motor) when switching over.
  • the motor drive moves an output shaft which attracts a drive element of the on-load tap changer.
  • This drive element causes, for example, the movement of a switching tube of the on-load tap-changer and is usually referred to as energy storage (or energy storage). Is the energy storage fully wound up, d. H. strained, he is unlatched, releases his energy abruptly and operated in the period of milliseconds (ms) a switching tube, which then performs a specific scarf sequence during load switching. In this case, different switch contacts and resistor contacts are actuated in a specific time sequence.
  • the switch contacts are used for direct connection of the respective winding tap with the load dissipation, the resistor contacts for short-term wiring, d. H. Bridging by means of one or more switching resistors.
  • vacuum interrupters are used as switching elements for load switching. This is based on the fact that the use of vacuum interrupters for load switching prevents arcing in the oil and thus the oil pollution of the diverter switch oil, such as in German Patent DE 195 10 809 C1 and DE 40 1 1 019 C1 and German Patent Application DE 42 31 353 A1 and DE 10 2007 004 530 A1.
  • International Patent Application WO 98/38661 A1 discloses a motor drive for tap changers, diverters or plunger coils. The motor drive is used in particular for setting the tap changer to the desired switching position. In the motor drive all necessary for driving the tap changer mechanical and electrical assemblies are combined.
  • a tap-changer of the type of reactor switch is described thereon.
  • This also includes a motor drive with downstream gear, especially a Maltese gear or Hebelumlenkgetriebe.
  • Chinese Utility Model CN 201242930Y discloses an on-load tap-changer head for an on-load tap-changer for seamless switching between different load stages.
  • the on-load tap-changer head includes an on-load tap-changer transmission and a mechanical load step position indicator.
  • a display shaft of the load stage position indicator couples directly to a transmission shaft of the on-load tap-changer transmission.
  • the on-load tap-changer head is provided with a cover with a window through which the load position indicator can be read.
  • the Chinese Utility Model CN 201 167023Y discloses an on-load tap-changer transmission having a shift-stage display indicator of an on-load tap changer.
  • the on-load tap changer transmission has a transmission shaft to which a motor driving the switching tube of the on-load tap changer can be coupled. Via a worm gear, the gear shaft drives a input shaft of the on-load tap-changer transmission.
  • a coupling element is formed, via which the input shaft is coupled to the switching tube of the on-load tap changer.
  • To indicate the shift position protrudes one end of the indicator shaft out of the housing of the on-load tap changer and is provided with a pointer which is rotatable against a display disc with shift position marks. For better readability, the pointer can be visually enlarged.
  • a disadvantage of the on-load tap-changer transmission with a display mechanism of the Chinese utility model CN 201 167023Y is that the display mechanism receives the movement of the input shaft for mounting an energy accumulator.
  • the tap on the input shaft is susceptible to errors, since any slip occurring between input shaft and power storage is not detected, so that the display of the switching position is inaccurate.
  • the object of the invention is to provide an on-load tap-changer, wherein the switching positions of the on-load tap-changer can be detected reliably, tamper-proof and in a fault-proof manner.
  • the on-load tap-changer should be easy to maintain.
  • the invention relates to an on-load tap-changer.
  • the on-load tap-changer according to the invention comprises a switching tube and a force accumulator for setting a switching position of the switching tube.
  • the on-load tap-changer comprises a detector for detecting a switching position of the tap changer and an on-load tap-changer transmission. Both the switching tube and the detector are mechanically coupled via the on-load tap-changer transmission with the energy accumulator.
  • a preselector and possibly a fine selector of the on-load tap-changer can each be connected via the on-load tap-changer transmission to the energy store for setting a switching position of the preselector be mechanically coupled to the detector for detecting its switching position.
  • the switching position of the on-load tap-changer results in this embodiment from a combination of the position of switching tube, preselector and possibly fine-tuning.
  • the on-load tap-changer transmission couples a superposition of the movements of the shift tube, preselector, and possibly fine-tuning dial to the detector.
  • the detector can detect a coupled via the on-load tap changer mechanical input signal and convert it into an electronic signal of the switching position of the on-load tap changer and output.
  • an electronic board may be provided in the detector which processes the electronic signal, for example amplified and / or digitized.
  • the detector may comprise a cam switch and / or encoder system.
  • the detector comprises a cam mechanism, which consists of at least one cam with a plurality of switching position positions and at least one cam.
  • the at least one cam is releasably connectable to each switch position.
  • the cam disk of the detector serves, for example, to detect the end position of the on-load tap-changer. In particular, so faulty circuits of the on-load tap-changer can be avoided.
  • the at least one cam disc may be assigned at least one switch for detecting an end position position of the on-load tap changer such that each switch can be actuated with at least one cam.
  • the actual detection of the switching position of the on-load tap-changer can take place via an encoder system, which is partially integrated on the cam disk.
  • the encoder system can be designed, for example, as a Hall effect transmitter, optical encoder or potentiometer.
  • it comprises a plurality of sliding contacts and a grinder.
  • At each switching position of the at least one cam disc at least one sliding contact is formed, which is electrically coupled with a grinder.
  • an inventive cam plate for complete detection of the end positions and switching positions of the on-load tap-changer is sufficient.
  • the detector can be configured redundantly with several such cams. In this case, a slider simultaneously electrically couple the sliding contacts of two cams.
  • a detector housing for receiving the detector on a lid of the On-load tap-changer is arranged.
  • a housing cover can be detachably mounted, so that you can easily maintain or replace the detector without having to dismantle the lid of the on-load tap-changer or remove the on-load tap-changer transmission.
  • a running detector may be provided.
  • the running detector according to the invention is associated with a drive shaft of the on-load tap-changer transmission, via which the energy store can be mounted.
  • the running detector can detect the rotation of the input shaft and convert and output as an electronic signal. If necessary, the input shaft couples via a motor transmission to an electric motor or to a manual emergency operating means. The detection of their rotational movement makes it possible to monitor how the energy accumulator is wound up via the electric motor or the emergency operating means.
  • the running detector can be designed as a donor system, for example as a cam controller.
  • the encoder system can be designed as an absolute encoder. Absolute encoders output length or angle information of a device to be measured in the form of an absolute, mostly digitized numerical value. Since no reference to a reference is necessary, they can start measuring operation immediately after switching on, which is advantageous for the simple and safe operation of the on-load tap-changer according to the invention.
  • the detector or the detector and the running detector can be electrically connected to a control unit for controlling or regulating the on-load tap-changer.
  • the electric motor of the on-load tap-changer can be regulated on the basis of the electrical signals from the detector and optionally running detector, which ultimately drives the wiring of the on-load tap-changer.
  • the inventive idea which is realized in the present on-load tap changer, based on the Abgriff the sudden drive movement of the energy storage, which actually acts on the switching tube and possibly selection, instead of a continuous movement of the input shaft, which raises the energy storage and while not with the switching tube in Active compound is.
  • the force accumulator is jammed or erroneously not fully wound so that it does not trip, then in an on-load tap changer of the prior art, the indicated shift position would fall apart from the actual shift position. So far, the detection of the switching position based on the rotational movement of the input shaft. Input shaft and energy storage can move independently.
  • only one shift position change can be detected when the force accumulator is actually actuated.
  • the rotary converter has a driver and a cam driver for coupling a movement of the energy accumulator depending on the detector and on the switching tube.
  • Carrier and cam drivers are rigidly coupled. This ensures that the energy storage always acts simultaneously on the detector and switching tube.
  • the movement of the energy storage is by a mechanical Transmission mechanism of the on-load tap-changer transmission to the detector and the switching tube transmitted.
  • the components of these transmission mechanisms can be stable, compact and slip-free. In addition, they are protected against environmental influences inside the on-load tap-changer. As a result, the entire on-load tap-changer transmission is exposed to the same temperature range, so that thermally induced mechanical play or tension is avoided.
  • a significant advantage of the invention lies above all in the simple, integrated in the on-load tap-changer coupling of the detector for detecting the switching position of the on-load tap-changer.
  • Existing solutions of the prior art form over the on-load tap changer gearbox in the thus coupled motor gear of the electric motor.
  • the associated coupling process and the synchronization of the electric motor and the on-load tap changer is very expensive and error prone. If the indicated and actual shift positions fall apart, an erroneous clutch and shift operation may result in breakage of the limit positions. This is excluded according to the invention.
  • the simplification according to the invention substitutes a control gear necessary for this coupling process.
  • Another advantage of the invention is that the electric motor e.g. can be expanded to standard maintenance without having to intervene in the mechanical coupling between the detector of the on-load tap-changer gear and the switching tube. As a result, the displayed and the actual switching position of the tap changer can not fall apart. When installing the electric motor no complex recalibration of displayed and actual switching position is necessary.
  • Fig. 1 is a perspective view of an on-load tap changer according to the invention in one
  • Fig. 2 is a perspective view of the on-load tap-changer transmission of the invention
  • 3 shows a further perspective view of the on-load tap-changer transmission of the on-load tap-changer according to the invention
  • 4 shows a perspective view from below of the on-load tap-changer transmission of the on-load tap-changer according to the invention
  • FIG. 5 shows a further perspective view of the upper part of the on-load tap changer, with the built-in energy accumulator being visible;
  • Fig. 6 is a perspective view of the lid of the on-load tap changer of Fig. 1, showing a control unit;
  • FIG. 7 is a perspective view of an embodiment of the detector for detecting the
  • FIG. 8 is a cutaway perspective view of the embodiment shown in FIG.
  • Detector for detecting the switching position of the on-load tap-changer Detector for detecting the switching position of the on-load tap-changer.
  • Fig. 1 shows a perspective view of an on-load tap changer according to the invention in the form of a three-phase load selector 1.
  • the load selector 1 has here as an electric motor drive 3 with a gear 5, which raises a power accumulator, not shown. Is the energy storage fully wound up, d. H. tense, he is unlatched, releases his energy abruptly and actuates a switching tube 15.
  • the rotating switching tube 15 is rotatably mounted in the oil vessel 18, so that different switching position can be adjusted.
  • the oil vessel 18 is closed at the top with a lid 19 and also carries a bottom 21st
  • the load selector 1 has three phases L1, L2, L3, which are arranged one above the other in the oil vessel 18. About the three phases L1, L2, L3 sits a preselector 37 mounted on the switching tube. Electrical connection elements 39 are arranged on the load selector 1 so that they engage through a wall 17 of the oil vessel 18.
  • FIG. 2 shows a perspective view of the on-load tap-changer transmission 100 of the on-load tap-changer 1 according to the invention.
  • the on-load tap-changer transmission 100 is arranged on a mounting plate 101 which is detachably connected to the lid 19 of the on-load tap-changer 1 shown in cut-away form.
  • An input shaft 9 is coupled via a motor gear 5 with an electric motor 3.
  • the input shaft 9 drives a rotary converter 1 10 to one coupled to the rotary converter 1 10 Force accumulator 13 (see Fig. 5) raise.
  • the input shaft 9 typically performs a half turn.
  • a full revolution of the input shaft 9 is conceivable.
  • the rotary converter 1 10 drives on the one hand a Maltese Cross 120, with which the switching tube 15 and a preselector driver 140 is connected to a preselector 37.
  • the switching tube 15 rotates, for example, at an angle of 30 ° per switching operation.
  • the preselector is switched from a "plus position” to a "minus position” via a "zero position.”
  • the rotary converter 110 drives a rotary pickup 130, which in turn drives a display driver 150.
  • the display driver 150 causes a rotary motion In the detector 200, for example, one twentieth rotation per 30 ° rotation of the switching tube 15.
  • the preselector driver 140 couples the switching motion of the preselector 37 to rotary pickup 130, which also acts on the detector 200 via the display driver 150. This effect may be, for example in that the direction of rotation of the twentieth rotation effected by the switching tube 15 is reversed in the detector 200.
  • the switching movements of the switching tube 15 and the preselector 37 can be simultaneously coupled into the detector 200 and detected.
  • both the position of the switching tube 15 and the preselector 37 go.
  • the switching tube 15 has, for example, 8 switching positions and the zero position and the preselector 37 have a "plus position” and a "minus position"
  • a total of 19 switching positions result for the entire on-load tap-changer 1, for example " -8, -1, 0, +1, ..., +8 "
  • the shift position" -3 indicates that the preselector 37 is in the” minus position "and the shift tube is in the third of eight
  • a fine selector (not shown) can also be integrated into the shift position detection via the on-load tap-changer transmission 100.
  • the energy accumulator 13 is drawn up by the electric motor 3 via a drive shaft 9.
  • the on-load tap-changer transmission 100 couples the energy accumulator 13 to the switching tube 15 in such a way that at least part of its kinetic energy is transferred into a rotational movement of the switching tube 15.
  • the on-load tap-changer transmission 100 couples the energy accumulator 13 to the detector 200 in such a way that it receives a movement.
  • the movement recorded by the detector 200 is correlated via the load stage transmission 100 with the rotational movement of the switching tube 15 and thus a measure of the rotational movement of the switching tube 15.
  • a display shaft 151 connected to the detector 200 rotates through an angle of 5 ° when the Switching tube rotates 30 °.
  • the input shaft 9 is decoupled from the force accumulator 13 and 13 coupled again when reaching the rest position of the force accumulator, so that the input shaft 9 performs no relaxing movement of the energy storage 13 opposite movement.
  • the coupling between power storage 13 and its input shaft 9 remain and only the electric motor 3 are switched de-energized, so that it can be rotated by the energy storage device 13 with little energy.
  • 3, 4 and 5 show a different perspective views of the on-load tap-changer transmission 100 of the on-load tap-changer 1.
  • the energy accumulator 13 is shown only in FIG.
  • the input shaft 9 of the on-load tap-changer transmission 100 is driven by an electric motor 3 via a motor housing 5.
  • a Eintriebswellenstattenzahnrad 1 15 of the input shaft 9 drives via a Drehetzrichzahnrad 1 16 of the rotary transducer 1 10 a crank 1 13 of the rotary transducer 1 10.
  • the crank 1 13 biases the energy storage 13. Once the crank 1 13 has fully accumulated the energy storage 13, it automatically unlatched from the input shaft gear 1 15 of the input shaft 9 and driven by the energy storage device 13.
  • the unlatched crank 1 13 drives the rotary converter 1 10.
  • the rotary converter 1 10 drives on the one hand via a first driver 1 1 1 with a first Mitauerrad 1 12 a first cam 131 of a Drehetz choirs 130 and on the other hand via a Maltese driver 1 14 a Maltese disc 120th
  • the Maltese disc 120 drives, on the one hand, a switching tube 15 of the on-load tap-changer 1 and, on the other hand, a preselector driver 150 for driving a preselector 37 of the on-load tap-changer 1.
  • the preselector driver 150 drives a second camming disc 132 of the rotary receptacle 130 via a second tappet 141 with a second tappet 142.
  • a rotary tapwheel 145 of the rotary receptacle 140 drives directly or via an intermediate gear 146, a display shaft gear 152, which sits axially and rigidly connected to a display shaft 151, so that a rotational movement of the indicator shaft 151 is effected.
  • the indicator shaft 150 is mechanically coupled to the detector 200.
  • the rotational movement of the indicator shaft 151 is detected by the detector 200 and converted into an electrical signal and output.
  • a running detector 300 is disposed on the input shaft 9.
  • the running detector is designed, for example, as a donor system or cam switch mechanism and detects the rotational movement of the input drive shaft 9 and thus indirectly via the motor drive 5 the drive movement of the electric motor 3.
  • FIG. 6 shows a perspective view of the cover 19 of the on-load tap-changer 1 and its connection to a control unit 400.
  • the display shaft 151 is guided through an opening (not shown) in the cover 19, so that the detector 200 can be arranged on the cover 19.
  • a detector housing 240 for receiving the detector 200 is formed on the lid 19, a detector housing 240 for receiving the detector 200 is formed.
  • the detector housing 240 can be closed and obviously with a detector housing cover 241 (see FIG. 1), so that the detector 200 can be easily accessible and, if necessary, replaced without having to dismantle the cover 19.
  • the running detector 300 is received in an intermediate housing 14.
  • a control unit 400 for controlling and / or Control of the on-load tap-changer 1 connected.
  • a closed loop control unit 400 may control electric motor 430 based on the signals from detector 200 and run detector 300.
  • Figs. 7 and 8 show a perspective view of an embodiment of the detector 200 for detecting the switching position of the on-load tap-changer 1 according to the invention. In FIG. 7, the cam disk 21 1 is shown cut away.
  • the detector 200 consists of an electronic board 230 with board contacts 231.
  • the cam 230 carries a cam mechanism 210.
  • This cam mechanism 210 consists of at least one cam disc 21 1 with a plurality of shift position positions 201, 202, 203 and at least one cam 212.
  • the at least one cam 212 is detachably connectable to each shift position position 201, 202, 203.
  • On the top 232 and on the bottom (not shown in this perspective view) of the board 230 are each a cam 21 1 rotatably mounted and coupled to the indicator shaft 151 of the on-load tap-changer 100. For each switching operation of the switching tube 15 performs this cam 21 1, for example, a twentieth rotation. The direction of rotation of this rotation is determined by means of the on-load tap-changer transmission 100 from the position of the preselector 37.
  • At least one cam 220 for detecting an end position 201 of the on-load tap-changer 1 is assigned to each of the at least one cam disk 21 1.
  • Each switch 220 is operable with at least one cam 212.
  • the detector further comprises a transmitter system 250.
  • the transmitter system 250 includes a plurality of sliding contacts 14 and a slider 215 which is rigidly connected to the circuit board. At each switching position position 201, 202, 203 of the at least one cam disc 210 at least one sliding contact 214 is formed, which is electrically coupled to the slider 215.
  • a cam plate 21 1 according to the invention in the detector 200 is sufficient to detect the switching position of the on-load tap-changer 1.
  • the detector 200 is provided redundantly with the second and possibly further cam disks 21 1.
  • a wiper 215 may be associated with two adjacent cams 21 1.
  • the electronic board 230 may further process, eg, amplify and / or digitize the switch position position 201, 202, 203 detected by the detector 200 into an electronic signal.

Abstract

L'invention concerne un changeur de prises en charge (1) comportant un cylindre de commutation (15), un accumulateur d'énergie (13) servant à ajuster une position de commutation du cylindre de commutation (15), un détecteur (200) servant à détecter une position de commutation du changeur de prises en charge (1) et un mécanisme de changeur de prises en charge (100). Aussi bien le cylindre de commutation (15) que le détecteur (200) sont accouplés mécaniquement à l'accumulateur d'énergie (13) par l'intermédiaire du mécanisme de changeur de prises en charge (100).
EP14734774.4A 2013-07-16 2014-06-24 Changeur de prises en charge Active EP3022749B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013107558.4A DE102013107558A1 (de) 2013-07-16 2013-07-16 Laststufenschalter
PCT/EP2014/063262 WO2015007477A1 (fr) 2013-07-16 2014-06-24 Changeur de prises en charge

Publications (2)

Publication Number Publication Date
EP3022749A1 true EP3022749A1 (fr) 2016-05-25
EP3022749B1 EP3022749B1 (fr) 2020-02-26

Family

ID=51062795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14734774.4A Active EP3022749B1 (fr) 2013-07-16 2014-06-24 Changeur de prises en charge

Country Status (7)

Country Link
US (1) US9697963B2 (fr)
EP (1) EP3022749B1 (fr)
JP (1) JP6501769B2 (fr)
CN (1) CN105493216B (fr)
DE (1) DE102013107558A1 (fr)
UA (1) UA119146C2 (fr)
WO (1) WO2015007477A1 (fr)

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DE102018130869A1 (de) * 2018-12-04 2020-06-04 Maschinenfabrik Reinhausen Gmbh Lastumschalter für Laststufenschalter und Laststufenschalter
CN110081226B (zh) * 2019-03-14 2020-02-14 哈尔滨工程大学 一种水下控制模块集成液压基盘
CN109931962B (zh) * 2019-04-02 2024-01-26 河北旭辉电气股份有限公司 磁感应式非接触型有载开关档位回读装置
JP7095185B2 (ja) * 2019-11-26 2022-07-04 株式会社東芝 負荷時タップ切換器
CN112201532B (zh) * 2020-08-26 2023-01-24 广东电网有限责任公司佛山供电局 一种有载分接开关控制装置
CN112201531B (zh) * 2020-08-26 2024-01-23 广东中鹏电气有限公司 一种有载调压开关
EP3989253A1 (fr) * 2020-10-26 2022-04-27 Hitachi Energy Switzerland AG Système de commande d'un interrupteur à vide pour un commutateur de dérivation de puissance, commutateur de dérivation de puissance et changeur de prises en charge
CN114878977A (zh) * 2022-03-31 2022-08-09 上海交通大学 一种有载分接开关的绝缘校核方法

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Also Published As

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DE102013107558A1 (de) 2015-01-22
EP3022749B1 (fr) 2020-02-26
UA119146C2 (uk) 2019-05-10
US20160155580A1 (en) 2016-06-02
US9697963B2 (en) 2017-07-04
CN105493216A (zh) 2016-04-13
WO2015007477A1 (fr) 2015-01-22
CN105493216B (zh) 2017-11-28
JP6501769B2 (ja) 2019-04-17
JP2016524349A (ja) 2016-08-12

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