WO2018086456A1 - Commutateur isolant bidirectionnel à raccordement à la masse - Google Patents

Commutateur isolant bidirectionnel à raccordement à la masse Download PDF

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Publication number
WO2018086456A1
WO2018086456A1 PCT/CN2017/107459 CN2017107459W WO2018086456A1 WO 2018086456 A1 WO2018086456 A1 WO 2018086456A1 CN 2017107459 W CN2017107459 W CN 2017107459W WO 2018086456 A1 WO2018086456 A1 WO 2018086456A1
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WO
WIPO (PCT)
Prior art keywords
switch
grounding
double
isolating
transmission
Prior art date
Application number
PCT/CN2017/107459
Other languages
English (en)
Chinese (zh)
Inventor
张长虹
李洁珊
王剑坤
李万民
黎卫国
Original Assignee
中国南方电网有限责任公司超高压输电公司检修试验中心
上海思源高压开关有限公司
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 中国南方电网有限责任公司超高压输电公司检修试验中心, 上海思源高压开关有限公司 filed Critical 中国南方电网有限责任公司超高压输电公司检修试验中心
Priority to JP2018600004U priority Critical patent/JP3218953U/ja
Publication of WO2018086456A1 publication Critical patent/WO2018086456A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/10—Interlocking mechanisms for interlocking two or more switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/023—Base and stationary contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/026—Movable parts and contacts mounted thereon

Definitions

  • the invention relates to the field of equipment of a converter station/substation of a voltage level of 220 kV and above, and more particularly to a double-break isolation switch with ground linkage.
  • Isolation switch (commonly known as "knife gate”), generally refers to the high-voltage isolating switch, that is, the isolating switch with rated voltage above 1kV, usually referred to as the isolating switch, is the most used one of the high-voltage switchgear, its own work
  • the principle and structure are relatively simple, but due to the large amount of use and high reliability requirements, the impact on the design, establishment and safe operation of substations and power plants is large.
  • the main feature of the isolating switch is that it has no arc extinguishing capability and can only divide and close the circuit without load current.
  • the isolating switch is used for voltages at various stages. It is used to change the circuit connection or to isolate the line or equipment from the power supply.
  • the first stage the traditional GIS knife gate design generally uses the isolation knife gate and the grounding knife gate as two independent functional units.
  • the isolation knife gate In present, there are still many mainstream manufacturers adopting this design, in order to avoid the isolation knife gate during the knife gate operation.
  • the brake When the brake is energized, the grounding knife gate is mismatched and the grounding isolation knife is prevented from being grounded.
  • the grounding can only be controlled by electrical interlock. If the electrical interlocking circuit fails or is unlocked incorrectly, the grid line trip may be triggered. accident.
  • the second stage three-station isolation knife gate design.
  • the design integrates the features and functions of the isolating knife gate and the grounding knife gate. It has three working positions: 1. the closing position of the main breaker of the isolation knife gate; the isolation position of the main breaker of the isolation knife gate; 3 grounding The grounding position of the knife gate closing.
  • the three-station isolation knife gate is based on the electrical interlock control of the traditional GIS knife gate, and introduces the mechanical interlocking control function to form double interlocking control, which is equivalent to double insurance, which greatly reduces the occurrence of switching due to electrical or mechanical interlock failure. The probability of a grid accident that is mishandled.
  • the three-station isolation knife gate realizes that the knife gate has only one moving contact, and the two ends of the movable contact are the isolated fracture end and the ground end respectively, so the working position of the movable contact at any moment is unique. Either the flow is closed with the isolation fracture end, or it is grounded with the ground terminal, or neither flow nor ground.
  • the mechanical state of the knife gate contacts basically eliminates the possibility of misoperation.
  • a first object of the present invention is to provide a four station isolation knife gate having two isolation fractures.
  • the second object of the present invention is that the grounding operation can be performed through the grounding knife gate in the middle of the isolation fracture, and the grounding knife gate and the isolating knife gate are interlocked to prevent misoperation.
  • Double-breaking isolating switch with grounding linkage comprising shell, double-break switch device, disconnecting switch driving device, grounding switch device, grounding switch driving device, grounding switch transmission mechanism, linkage device; said double-break switch device installation Inside the casing, the synchronous switch closing or opening of the two sides of the fracture is realized by the isolating switch driving device; the grounding switch device is mounted on the casing to perform grounding opening and closing control of the double-breaking switch device, which passes The grounding switch driving device and the grounding switch transmission mechanism realize closing or opening; the linkage device is respectively connected with the isolating switch driving device and the grounding switch driving device, so that the grounding switching device can be performed when the double-breaking switching device is in the opening state When the grounding switch device is in the open state, the double-fracture switch device can be closed; the housing is provided with a plurality of closed cavities that are sequentially connected, and each of the cavities is correspondingly provided with one Group double break switch device, grounding switch device.
  • the isolating switch driving device comprises an isolating switch motor, an isolating switch output shaft, and an isolating switch control circuit for controlling the isolating switch motor;
  • the grounding switch driving device comprises grounding connected in sequence a switch motor, a grounding switch output shaft, a grounding switch control circuit for controlling the grounding switch motor;
  • the linkage device includes a first micro switch and a second micro switch; and the first micro switch is connected to the isolating switch at one end The other end of the output shaft is connected to the grounding switch control loop; one end of the second microswitch is connected to the grounding switch, and the other end is connected to the isolating switch control loop;
  • the first microswitch is controlled by detecting the positional relationship of the output shaft of the isolating switch
  • the grounding switch control circuit is turned on or off; the second micro switch controls the on/off of the isolating switch control circuit by detecting the positional relationship of the grounding switch output shaft.
  • the first micro switch and the second micro switch are a lever roller type, and the output switch shaft of the isolation switch is provided with a first touch groove matched with the roller of the first micro switch.
  • the first micro switch is installed outside the output shaft of the isolating switch and its roller corresponds to the positional relationship of the first touch groove;
  • the grounding switch output shaft is provided with a roller matched with the second micro switch Two-touch groove;
  • the second micro switch is installed outside the grounding switch output shaft and its roller corresponds to the second touch groove position relationship; the roller of the first micro switch is engaged with the first touch groove at the initial
  • the double-break switch device is in the open state, the grounding switch control circuit is connected, the output switch of the isolating switch is turned one week, the double-break switch device is in the closing state, the grounding switch control circuit is cut off, the output shaft of the isolating switch is reversed for one week, double-break The switch device resumes the opening state; when the roller of the second micro switch is
  • the driving box is further disposed on the outer side of the casing, and the isolating switch driving device, the grounding switch driving device and the linkage device are all disposed in the driving box.
  • the grounding switch transmission mechanism includes a first rocker arm, a first link, a second rocker arm, and a second link; an end of the first rocker arm and an output of the grounding switch driving device
  • the second rocker arm is disposed on the grounding switch device for operating the closing or opening of the grounding switch device, and the swinging end of the first rocker arm and the second rocker arm is connected by the first connecting rod
  • the oscillating ends of the second rocker arms of the plurality of grounding switch devices are connected by a second link.
  • the double-fracture switch device includes a movable contact holder, a pair of movable contacts and a pair of static contacts;
  • the movable contact seat is disposed at a middle portion of the cavity;
  • a pair of static contacts are respectively disposed on opposite sides of the movable contact seat;
  • the pair of movable contacts are disposed inside the movable contact holder and can protrude from the opposite direction to the movable contact holder and corresponding
  • the static contact contact fits, the pair of movable contacts are synchronously reciprocating linear motion by the driving mechanism, and simultaneously or simultaneously separated from the static contact; the pair of movable contacts are electrically connected to each other.
  • the existing product isolation switch In the process of opening and closing the busbar conversion current, the existing product isolation switch has only one fracture, and the arcing time is longer, which is not conducive to arc extinguishing, and the moving contact ablation is serious.
  • the easy product metal powder is not conducive to product insulation.
  • Performance, double-break isolation switch can be installed with arc contacts on both sides due to the two partial pressure division and arc extinguishing, which greatly reduces the arcing time, reduces the burning loss of copper and tungsten contacts, and improves the service life of the product. And performance.
  • an end of the moving contact facing away from the static contact is provided with an axially arranged rack that cooperates with the driving mechanism.
  • the driving mechanism includes an insulating transmission rod, a transmission gear, a transmission shaft, a transmission insert;
  • the transmission shaft is a spline shaft, and is connected to the isolating switch driving device;
  • the shaft position of the transmission insert is provided with a spline blind hole that cooperates with the outer circumference of the spline shaft;
  • the axial position of the transmission gear is provided with a spline through hole that cooperates with the outer circumference of the spline shaft, and the outer circumference of the transmission gear is an external gear portion that cooperates with the rack;
  • the two ends of the insulated transmission rod are coaxial Fixing a transmission insert, the spline blind hole of the transmission insert facing outward;
  • the transmission gear is disposed inside the movable contact seat and the external gear portion and the teeth of the pair of moving contacts
  • the gear shaft passes through the spline through hole of the transmission gear, one end of the transmission shaft is connected with the transmission insert of one end of the insulating transmission rod,
  • the double-break isolation switch module adopts three-phase linkage mechanical transmission structure, and the transmission is stable and reliable.
  • the built-in transmission structure design without exposed connecting rod enhances the weather resistance of key components of the product, reduces the transmission link, and improves the transmission efficiency of the separation and operation of the isolated knife gate.
  • the grounding switch can be closed. Similarly, only when the grounding switch is opened, the isolating switch can perform the closing operation to avoid manual misoperation and improve equipment safety.
  • FIG. 1 is a schematic perspective structural view of a double-breaking isolating switch with grounding linkage according to the present invention.
  • FIG. 2 is a schematic vertical structural view of a double-break disconnecting switch with grounding linkage according to the present invention.
  • Fig. 3 is an enlarged schematic view showing a region A of Fig. 2;
  • FIG. 4 is a schematic cross-sectional structural view of a double-break disconnecting switch with grounding linkage according to the present invention.
  • Figure 5 is a schematic view showing the internal structure of the drive box of the present invention.
  • FIG. 6 is a schematic view showing the cooperation of the first micro switch and the output shaft of the isolating switch of the present invention.
  • FIG. 7 is a schematic view showing the cooperation of the second micro switch and the grounding switch output shaft of the present invention.
  • Figure 8 is a schematic structural view of the linkage of the present invention.
  • a double-breaking isolating switch with grounding linkage includes a housing 1, a double-break switch device 2, an isolating switch driving device 3, a grounding switch device 4, a grounding switch driving device 5, and a grounding switch.
  • the transmission mechanism 6, the linkage device 7, the driving box 8, the driving box 8 is disposed outside the casing 1, and the isolating switch driving device 3, the grounding switch driving device 5, and the linkage device 7 are all disposed in the driving box 8.
  • the double-break switch device 2 is installed inside the casing 1, and realizes synchronous closing or opening of the two-side fractures through the isolating switch driving device 3; the grounding switch device 4 is mounted on the casing 1
  • the double-break switch device 2 performs grounding opening and closing control, which is closed or opened by the grounding switch driving device 5 and the grounding switch transmission mechanism 6; the linkage device 7 and the isolating switch driving device 3 and the grounding switch respectively
  • the driving device 5 is connected so that the grounding switch device 4 can be closed when the double-break switch device 2 is in the open state; or the double-break switch device 2 can be combined when the ground switch device 4 is in the open state.
  • the housing 1 equipped with three successively communicating chamber 9 closed, corresponding to each of said inner cavity 9 is provided with a set of double-break switching device 2, the grounding switching device 4.
  • the isolating switch driving device 3 includes an isolating switch motor 10 connected in sequence, an isolating switch output shaft 11, an isolating switch control circuit 12 for controlling the isolating switch motor 10, and the grounding switch driving device.
  • the linkage device 7 includes a first micro switch 16 and a second micro switch 17 One end of the first micro switch 16 is connected to the other end of the isolating switch output shaft 11 and is connected to the grounding switch control circuit 15; one end of the second micro switch 17 is connected to the grounding switch output shaft 14 and the other end is connected to the isolating switch control circuit 12
  • the first micro switch 16 controls the on or off of the ground switch control circuit 15 by detecting the positional relationship of the isolating switch output shaft 11; the second micro switch 17 detects the position of the ground switch output shaft 14 by detecting The relationship controls the switch on or off of the isolation switch control circuit 12.
  • the first micro switch 16 and the second micro switch 17 are of a lever roller type, and the isolating switch output shaft 11 is provided with a roller of the first micro switch 16 .
  • the grounding switch transmission mechanism 6 includes a first rocker arm 20, a first link 21, a second rocker arm 22, and a second link 23; one end of the first rocker arm 20 is The output of the grounding switch drive 5 is connected, and the second rocker arm 22 is disposed on the grounding switch device 4 for operating the closing or opening of the grounding switch device 4, the first rocker arm 20 and the second The oscillating ends of the rocker arms 22 are connected by a first link 21; the oscillating ends of the second rocker arms 22 of the plurality of grounding switch devices 4 are connected by a second link 23.
  • the double-break switch device 2 includes a movable contact holder 24, a pair of movable contacts 25 and a pair of fixed contacts 26; the movable contact 25 seat 24 is disposed at the a middle portion of the cavity 9; the pair of static contacts 26 are respectively disposed at opposite sides of the movable contact 25 seat 24; the pair of movable contacts 25 are disposed on the movable contact
  • the 25-seat 24 is internal and can extend from the opposite direction to move the contact 25 seat 24 into contact with the corresponding fixed contact 26, and the pair of movable contacts 25 are synchronously reciprocating linear motion by the driving mechanism 27, and the static touch
  • the heads 26 are simultaneously contacted or simultaneously separated; the pair of movable contacts 25 are electrically connected to each other.
  • the driving mechanism 27 includes an insulating transmission rod 29, a transmission gear 30, a transmission shaft 31, and a transmission insert 32.
  • the transmission shaft 31 is a spline shaft connected to the isolating switch driving device 3;
  • the axial position of the member 32 is provided with a spline blind hole that cooperates with the outer circumference of the spline shaft of the drive shaft 31;
  • the axial position of the transmission gear 30 is provided with a spline through hole that cooperates with the outer circumference of the spline shaft.
  • the outer circumference of the transmission gear 30 is an external gear portion 33 that cooperates with the rack 28; both ends of the insulating transmission rod 29 coaxially fix a transmission insert 32, and the spline of the transmission insert 32
  • the blind hole is outwardly disposed; the transmission gear 30 is disposed inside the movable contact 25 seat 24 and the external gear portion 33 is engaged with the rack 28 of the pair of movable contacts 25; the transmission shaft 31 is Passing through the spline through hole of the transmission gear 30, one end of the transmission shaft 31 is connected to the transmission insert 32 at one end of the insulating transmission rod 29, and the other end is connected to the transmission insert of the other end of the insulating transmission rod 29 of the other driving mechanism 27. 32 connections.
  • the double-break switch device 2 is in the closing position, the grounding switch device 4 is in the opening position; in the operating mechanism, the double-break switch device 2 module performs the opening operation, and the grounding switch device 4 module keeps the closing state without moving; After the break switch device 2 is opened, the double-break switch control circuit is cut off, and the ground switch control loop is turned on, and the ground switch device 4 performs the closing operation; after the closing operation is in place, the ground switch control circuit is cut off, thereby completing the double-break switch. The device 2 is opened and the grounding switch device 4 is closed;
  • the double-break switch device 2 is in the open position, the ground switch device 4 is in the closing position; the grounding switch device 4 module in the operating mechanism performs the opening operation, and the double-break switch device 2 module remains closed; when grounded After the switch device 4 is opened, the grounding switch control circuit is cut off, and the double-break switch control circuit is turned on, and the double-break switch device 2 performs the closing operation; after the closing operation is in place, the double-break switch control circuit is cut off, thereby completing the grounding switch. The device 4 is opened and the double-break switch device 2 is closed.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Types And Forms Of Lifts (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

L'invention concerne un commutateur isolant bidirectionnel à raccordement à la masse, comprenant un logement, des dispositifs commutateurs bidirectionnels, un dispositif d'entraînement de commutateur isolant, des dispositifs commutateurs de connexion à la masse, un dispositif d'entraînement de commutateur de connexion à la masse, un mécanisme de transmission de commutateur de connexion à la masse, et un dispositif de raccordement. Les dispositifs commutateurs bidirectionnels sont montés à l'intérieur du logement et réalisent l'ouverture synchrone ou la fermeture synchrone d'interrupteurs des deux côtés au moyen du dispositif d'entraînement de commutateur isolant ; les dispositifs commutateurs de connexion à la masse sont montés sur le logement pour procéder à une commande d'ouverture/de fermeture de connexion à la masse sur les dispositifs commutateurs bidirectionnels et réalisent l'ouverture ou la fermeture au moyen du dispositif d'entraînement de commutateur de connexion à la masse et du mécanisme de transmission de commutateur de connexion à la masse ; le dispositif de raccordement est connecté au dispositif d'entraînement de commutateur isolant et au dispositif d'entraînement de commutateur de connexion à la masse respectivement, de sorte que les dispositifs commutateurs de connexion à la masse ne puissent être fermés que lorsque les dispositifs commutateurs bidirectionnels sont à l'état ouvert, ou que les dispositifs commutateurs bidirectionnels ne puissent être fermés que lorsque les dispositifs commutateurs de connexion à la masse sont à l'état ouvert.
PCT/CN2017/107459 2016-11-14 2017-10-24 Commutateur isolant bidirectionnel à raccordement à la masse WO2018086456A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018600004U JP3218953U (ja) 2016-11-14 2017-10-24 接地連携付きのダブルブレーク絶縁スイッチ

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CN201621222208.9 2016-11-14
CN201621222208 2016-11-14
CN201710328155.1 2017-05-11
CN201710328155.1A CN107068470B (zh) 2016-11-14 2017-05-11 一种具有接地联动的双断口隔离开关

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WO2018086456A1 true WO2018086456A1 (fr) 2018-05-17

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CN109509673A (zh) * 2019-01-10 2019-03-22 广东阿尔派电力科技股份有限公司 新型等角位移三工位双断口隔离开关
CN110223876A (zh) * 2019-07-12 2019-09-10 四川汇友电气有限公司 一种电气化铁道双断口隔离开关
CN112466701A (zh) * 2020-11-13 2021-03-09 许继（厦门）智能电力设备股份有限公司 一种双断口联动型三工位隔离接地开关结构
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CN107068470A (zh) * 2016-11-14 2017-08-18 中国南方电网有限责任公司超高压输电公司检修试验中心 一种具有接地联动的双断口隔离开关
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