CN105390327B - The anti-error control method of disconnecting switch for 110kV power networks - Google Patents
The anti-error control method of disconnecting switch for 110kV power networks Download PDFInfo
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- CN105390327B CN105390327B CN201510674265.4A CN201510674265A CN105390327B CN 105390327 B CN105390327 B CN 105390327B CN 201510674265 A CN201510674265 A CN 201510674265A CN 105390327 B CN105390327 B CN 105390327B
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- switch
- knife
- moving knife
- earthing
- disconnecting switch
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- 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
- H01H31/08—Interlocking mechanisms for interlocking two or more parts of the mechanism for operating contacts
Abstract
A kind of anti-error control method of disconnecting switch for 110kv power networks, step is：During disconnecting switch normal work, current sensor senses electric current on moving knife bar, now, and 30A 40A induced-current is produced in the secondary coil of current sensor, and induced-current is acted on electromagnetic lock through wire；In electromagnetic lock, the electric current on electric current induction coil band；The circuit length and complexity of lock cell can be reduced, avoid circuit long and cause error signal or reduce the influence of the security of requirement or lock cell of the circuit complexity to connection, its circuit is converted to actuating mechanism above moving knife post, when avoiding the electric current from transmitting downwards, because insulating properties is bad and caused by Keep Clear-High Voltage or ground connection danger, electromagnetic mechanism is rapidly acted simultaneously, improve the accuracy of electromagnetic lock mechanism, it is to avoid false release or lock out action caused by error signal.The alternate integrating action of disconnecting switch can be realized, while realizing the mechanical latching between the moving knife of disconnecting switch and earthing knife-switch.
Description
Technical field
The present invention relates to a kind of anti-error control method of disconnecting switch for 110kV power networks.
Background technology
The anti-error control method of disconnecting switch for 110kV power networks is important in power plant and transformer station's electrical system opens
Powered-down device, need to be supported the use with primary cut-out, and its major function is：Ensure the peace of High-Voltage Electrical Appliances and device in service work
Entirely, isolation voltage is played, it is impossible to with cutting off, putting into load current and cut-off short circuit current flow, can only be used to not produce by force
Some handover operations of big electric arc, i other words it does not have arc-suppression function；It is divided into by infield difference, within doors outside formula and room
Formula, is divided into, open side type by insulation column number, and queen post and three pillar type, each voltage class have optional equipment.For 110kV
The anti-error control method of disconnecting switch of power network ensure that the safety of High-Voltage Electrical Appliances and device in service work, play isolation voltage
Effect, it is impossible to with cutting off, putting into load current and cut-off short circuit current flow, can only be used to not produce some switchings of powerful electric arc
Operation, i other words it does not have arc-suppression function；It is divided into by infield difference, within doors formula outside formula and room, by insulation column number
It is divided into, open side type, queen post and three pillar type, each voltage class have optional equipment.Also it will can need to stop in high voltage distribution installation
The part of electricity reliably isolates with live part, to ensure the safety of service work.Disconnecting switch for 110kV power networks is anti-error
The contact of control method all it is open in atmosphere, with obvious cut-off point, disconnecting switch does not have arc-control device, therefore can not
For cutting off load current or short circuit current flow, otherwise under high pressure effect, cut-off point will produce strong electric arc, and be difficult voluntarily to put out
Go out, in some instances it may even be possible to cause arcing, scaling loss equipment jeopardizes personal safety, here it is so-called " on-load drawing disconnecting switch " it is serious
Accident.The anti-error control method of disconnecting switch for 110kV power networks can also be used to carry out the handover operation of some circuits, to change
The method of operation of change system.For example：In double-bus circuit, the anti-error controlling party of disconnecting switch of 110kV power networks can be used for
Operating circuit is switched on another bus by method from a bus.
Present disconnecting switch is frequently used in each transformer station, and the action of disconnecting switch is usually to be entered by console
Row far distance controlled, the anti-error control method of disconnecting switch for 110kV power networks is unable to on-load and acts this feature, existing
" five prevent ", although some safeguards have been done in measure, are due to maloperation, or the reason such as controller error signal, are most probably made
Earthing knife-switch misoperation into disconnecting switch or in disconnecting switch, causes serious danger, endangers power grid security.
The content of the invention
It is an object of the invention to：For 110kV power networks keep apart official seal there is provided a kind of for above-mentioned problem
Control method, sets locking device in disconnecting switch by mistake, it is to avoid during because of console far distance controlled, produces error signal,
Being used in the anti-error control method malfunction of disconnecting switch of 110kV power networks influences the security of equipment, it is to avoid personnel's maloperation,
Influence of the controller error signal to disconnecting switch safety, improves the security of power network, it is to avoid be used for keeping apart for 110kV power networks
Official seal misses influence of the control method malfunction to personal safety, the electric current profit that sensing of the locking device directly to coil is produced
With without power supply in addition, it is to avoid the influence that electric power system is normally used the locking device.
The technical solution adopted by the present invention is as follows：
The invention discloses a kind of anti-error control method of disconnecting switch for 110kV power networks, step is：
（1）, disconnecting switch normal work when, current sensor senses electric current on moving knife bar, now, in current sensor
Secondary coil in produce 30A-40A the first induced-current, the first induced-current acted on the first electromagnetic lock through wire；Make
Electric current on first coil band in first electromagnetic lock；
（2）, 30A-40A the first induced-current make the first coil in the first electromagnetic lock powered, twined first coil
Around the first iron core produce magnetic induction intensity be 500T-600T the first magnetic field；First electromagnetic lock moving knife dead bolt action so as to
Locking movable cutter mechanism makes it can not complete disconnection action；
（3）, the first iron core band magnetic field after, under magneticaction pull or promote the first electromagnetic lock moving knife dead bolt, moving knife
By 50N-70N pulling force or thrust on dead bolt；
（4）, moving knife dead bolt pull or promote moving knife latch mechanism rise or fall, its move distance be more than 3cm, moving knife lock
Moving knife post is locked on switch frame and movable cutter mechanism is locked as into closure state by the lower end of mechanism；
（5）, after the electric current in disconnecting switch is disconnected, the first induced-current on current sensor disappears, without first
Induced-current enters in the first electromagnetic lock, the power-off of the first electromagnetic lock, and the moving knife dead bolt in the first electromagnetic lock is in its first spring 20-
Unlocked position is reset under 30N elastic force effect, while moving knife dead bolt pushes or pull on the movement of moving knife latch mechanism and to moving knife post
Unblock；
（6）, the disconnecting switch moving knife bar be in operating position or open position when, voltage sensor senses quiet cutter head
The upper alternating voltage over the ground carried more than 10kV, in the secondary side formation 10A-20A of voltage sensor the second induced-current；
（7）, the second induced-current enter after the second electromagnetic lock, flow through the second coil in the second electromagnetic lock and in the second line
The second magnetic field is produced on circle, second magnetic field is conducted by the second iron core wound by the second coil, now on the second iron core
Magnetic induction intensity is 300T-450T；Magnetic force on second iron core pulls on or promoted the earthing knife-switch dead bolt of the second electromagnetic lock to act；
（8）, earthing knife-switch dead bolt acted on the earthing knife-switch latch mechanism being connected on earthing knife-switch dead bolt 30-40N pulling force or thrust；Ground
Knife latch mechanism is moved up or down in the presence of pulling force or thrust, and its distance moved is more than 5cm；
（9）, earthing knife-switch latch mechanism lower end the action of ground cutter shaft is locked, or the lower end of earthing knife-switch latch mechanism passes through gear
Structure makes ground cutter shaft be locked as off-state；
（10）, when the voltage on the quiet cutter head of disconnecting switch be reduced to allow close earthing knife-switch magnitude of voltage when, voltage sensor
Device can not sense that the voltage-to-ground on alternating voltage over the ground or its quiet cutter head on quiet cutter head meets the requirement of closure earthing knife-switch, electricity
Second induced-current of the secondary side of pressure sensor disappears or reduced, the magnetic induction intensity drop of the second coil in the second electromagnetic lock
Low, the second iron core is less than the elastic force of second back-moving spring to the pulling force or thrust of earthing knife-switch dead bolt, and the size of the elastic force is 15N-
20N, earthing knife-switch dead bolt resets under the elastic force effect of second back-moving spring, and earthing knife-switch dead bolt drives the action of earthing knife-switch latch mechanism, earthing knife-switch lock
Cutter shaft is unlocked over the ground for the lower end of mechanism；
（11）, when the moving knife post of movable cutter mechanism needs rotational action, control by disconnecting switch electric current drop zero, three-phase
Moving knife latch mechanism unblock in disconnecting switch, three moving knife latch mechanisms are moved up or moved down simultaneously in the presence of moving knife connecting rod, its
The triangular structure that moving knife connecting rod is constituted with moving knife latch mechanism can strengthen the degree of stability of its structure, make the disconnecting switch of three-phase
Unlock or lock simultaneously；
（12）, when the moving knife post of disconnecting switch turns to open position, moving knife post pulls the located at moving knife post lower end
One self-fastening button and the pulling force or thrust for acting on self-lock rod 50N-80N；Under pulling force or thrust, the self-lock rod other end located at ground
The second self-fastening button movement at cutter shaft, and cutter shaft is unlocked over the ground；
（13）, the second self-fastening button and earthing knife-switch latch mechanism be over the ground after cutter shaft unblock, when the earthing knife-switch of three-phase isolation switch needs
During closed action, the ground knife bar of three-phase is rotated up simultaneously in the presence of earthing knife-switch connecting rod, until on earthing knife-switch upper end and quiet cutter head
Earthing knife-switch interface connection；
（14）, earthing knife-switch close to closure state when, the second self-fastening button of earthing knife-switch lower end, which is acted, to be pulled or is pushed away with 50N-80N power
Dynamic self-lock rod, the first self-fastening button positioned at moving knife post lower end is acted in the presence of the pulling force or thrust of self-lock rod, under moving knife post
Disconnecting switch is locked as off-state by first self-fastening button at end；
（15）, local knife bar is when being located at open position, in disconnecting switch closing course, the moving knife post of disconnecting switch drives it
The first self-fastening button action of lower section, the first self-fastening button acts self-lock rod with 50N-80N pulling force or thrust, under ground cutter shaft
Earthing knife-switch lever lock is set to off-state by the second self-fastening button of side, while with alternating current over the ground on the quiet cutter head of voltage sensor senses
Pressure, earthing knife-switch latch mechanism further locks ground cutter shaft.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, the locking device structure of the disconnecting switch is simple, easy for installation, with low cost, it is easy to reequip；It is this in addition to set
Meter, can by the movable cutter mechanism of disconnecting switch, cutter mechanism realize safety locking, it is to avoid belt current disconnect earthing knife-switch, powered closure
The situation of earthing knife-switch occurs.Simultaneously cutter mechanism and the safety interlock of movable cutter mechanism, it is ensured that both can not be closed at；
2nd, the locking device has filled up the defect of existing disconnecting switch design, enhances the security performance of disconnecting switch；Essence
The control circuit of simple blocking device, it is to avoid circuit is long or crosses potential safety hazard caused by auxiliary, using relatively reliable machine
Tool mechanism, is prevented effectively from control down circuitry, and the situation that causing disconnecting switch can not protect occurs；
3rd, the locking device of the disconnecting switch is avoided because of error signal or faulty operation, and cause equipment, the person,
Power grid accident the occurrence of；
4th, the locking device of the disconnecting switch is simple and easy to apply, can be reequiped on the isolated switchgear with installation,
With good easy generalization；
5th, the locking device is simple with circuit structure, circuit is short, it is to avoid long distance signal transmission is to signaling security
Influence；
6th, the locking means, exquisite composition can greatly ensure disconnecting switch not because maloperation or error signal
Influence electric network security.
Brief description of the drawings
Fig. 1 is to be used for the disconnecting switch structure chart of 110kV power networks in the present invention；
Marked in figure：1- switch frames, 2- ground cutter mechanism, 21- ground knife bar, 22- ground cutter shaft, 23- earthing knife-switch electromagnetic mechanisms, 24-
Earthing knife-switch dead bolt, the quiet cutter mechanisms of 3-, the quiet tool posts of 31-, 32- voltage sensors, the quiet cutter heads of 33-, 4- movable cutter mechanisms, 41- moving knife bars,
42- moving knife posts, 43- current sensors, 44- moving knife electromagnetic mechanisms, 45- moving knife dead bolts, 46- moving knife motors.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Specific embodiment：
As shown in Figure 1
The anti-error control method of the disconnecting switch of the present invention, step is：
（1）, disconnecting switch normal work when, current sensor senses electric current on moving knife bar, now, in current sensor
Secondary coil in produce 30A-40A the first induced-current, the first induced-current acted on the first electromagnetic lock through wire；Make
Electric current on first coil band in first electromagnetic lock；
（2）, 30A-40A the first induced-current make the first coil in the first electromagnetic lock powered, twined first coil
Around the first iron core produce magnetic induction intensity be 500T-600T the first magnetic field；First electromagnetic lock moving knife dead bolt action so as to
Locking movable cutter mechanism makes it can not complete disconnection action；
（3）, the first iron core band magnetic field after, under magneticaction pull or promote the first electromagnetic lock moving knife dead bolt, moving knife
By 50N-70N pulling force or thrust on dead bolt；
（4）, moving knife dead bolt pull or promote moving knife latch mechanism rise or fall, its move distance be more than 3cm, moving knife lock
Moving knife post is locked on switch frame and movable cutter mechanism is locked as into closure state by the lower end of mechanism；
（5）, after the electric current in disconnecting switch is disconnected, the first induced-current on current sensor disappears, without first
Induced-current enters in the first electromagnetic lock, the power-off of the first electromagnetic lock, and the moving knife dead bolt in the first electromagnetic lock is in its first spring 20-
Unlocked position is reset under 30N elastic force effect, while moving knife dead bolt pushes or pull on the movement of moving knife latch mechanism and to moving knife post
Unblock；
（6）, the disconnecting switch moving knife bar be in operating position or open position when, voltage sensor senses quiet cutter head
The upper alternating voltage over the ground carried more than 10kV, in the secondary side formation 10A-20A of voltage sensor the second induced-current；
（7）, the second induced-current enter after the second electromagnetic lock, flow through the second coil in the second electromagnetic lock and in the second line
The second magnetic field is produced on circle, second magnetic field is conducted by the second iron core wound by the second coil, now on the second iron core
Magnetic induction intensity is 300T-450T；Magnetic force on second iron core pulls on or promoted the earthing knife-switch dead bolt of the second electromagnetic lock to act；
（8）, earthing knife-switch dead bolt acted on the earthing knife-switch latch mechanism being connected on earthing knife-switch dead bolt 30-40N pulling force or thrust；Ground
Knife latch mechanism is moved up or down in the presence of pulling force or thrust, and its distance moved is more than 5cm；
（9）, earthing knife-switch latch mechanism lower end the action of ground cutter shaft is locked, or the lower end of earthing knife-switch latch mechanism passes through gear
Structure makes ground cutter shaft be locked as off-state；
（10）, when the voltage on the quiet cutter head of disconnecting switch be reduced to allow close earthing knife-switch magnitude of voltage when, voltage sensor
Device can not sense that the voltage-to-ground on alternating voltage over the ground or its quiet cutter head on quiet cutter head meets the requirement of closure earthing knife-switch, electricity
Second induced-current of the secondary side of pressure sensor disappears or reduced, the magnetic induction intensity drop of the second coil in the second electromagnetic lock
Low, the second iron core is less than the elastic force of second back-moving spring to the pulling force or thrust of earthing knife-switch dead bolt, and the size of the elastic force is 15N-
20N, earthing knife-switch dead bolt resets under the elastic force effect of second back-moving spring, and earthing knife-switch dead bolt drives the action of earthing knife-switch latch mechanism, earthing knife-switch lock
Cutter shaft is unlocked over the ground for the lower end of mechanism；
（11）, when the moving knife post of movable cutter mechanism needs rotational action, control by disconnecting switch electric current drop zero, three-phase
Moving knife latch mechanism unblock in disconnecting switch, three moving knife latch mechanisms are moved up or moved down simultaneously in the presence of moving knife connecting rod, its
The triangular structure that moving knife connecting rod is constituted with moving knife latch mechanism can strengthen the degree of stability of its structure, make the disconnecting switch of three-phase
Unlock or lock simultaneously；
（12）, when the moving knife post of disconnecting switch turns to open position, moving knife post pulls the located at moving knife post lower end
One self-fastening button and the pulling force or thrust for acting on self-lock rod 50N-80N；Under pulling force or thrust, the self-lock rod other end located at ground
The second self-fastening button movement at cutter shaft, and cutter shaft is unlocked over the ground；
（13）, the second self-fastening button and earthing knife-switch latch mechanism be over the ground after cutter shaft unblock, when the earthing knife-switch of three-phase isolation switch needs
During closed action, the ground knife bar of three-phase is rotated up simultaneously in the presence of earthing knife-switch connecting rod, until on earthing knife-switch upper end and quiet cutter head
Earthing knife-switch interface connection；
（14）, earthing knife-switch close to closure state when, the second self-fastening button of earthing knife-switch lower end, which is acted, to be pulled or is pushed away with 50N-80N power
Dynamic self-lock rod, the first self-fastening button positioned at moving knife post lower end is acted in the presence of the pulling force or thrust of self-lock rod, under moving knife post
Disconnecting switch is locked as off-state by first self-fastening button at end；
（15）, local knife bar is when being located at open position, in disconnecting switch closing course, the moving knife post of disconnecting switch drives it
The first self-fastening button action of lower section, the first self-fastening button acts self-lock rod with 50N-80N pulling force or thrust, under ground cutter shaft
Earthing knife-switch lever lock is set to off-state by the second self-fastening button of side, while with alternating current over the ground on the quiet cutter head of voltage sensor senses
Pressure, earthing knife-switch latch mechanism further locks ground cutter shaft.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. the locking device structure of the disconnecting switch is simple, easy for installation, with low cost, it is easy to reequip；It is this in addition to set
Meter, can by the movable cutter mechanism 4 of disconnecting switch, cutter mechanism 2 realize safety locking, it is to avoid belt current disconnects earthing knife-switch, powered closed
The situation for closing earthing knife-switch occurs.Simultaneously cutter mechanism 2 and the safety interlock of movable cutter mechanism 4, it is ensured that both can not be closed at；
2. the locking device has filled up the defect of existing disconnecting switch design, the security performance of disconnecting switch is enhanced；Essence
The control circuit of simple blocking device, it is to avoid circuit is long or crosses potential safety hazard caused by auxiliary, using relatively reliable machine
Tool mechanism, is prevented effectively from control down circuitry, and the situation that causing disconnecting switch can not protect occurs；
3. the locking device of the disconnecting switch is avoided because of error signal or faulty operation, and cause equipment, the person,
Power grid accident the occurrence of；
4. the locking device of the disconnecting switch is simple and easy to apply, it can be reequiped on the isolated switchgear with installation,
With good easy generalization；
5. the locking device is simple with circuit structure, circuit is short, it is to avoid long distance signal transmission is to signaling security
Influence；
6. the locking means, exquisite composition, can greatly ensure disconnecting switch not because maloperation or error signal
Influence electric network security.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (1)
1. a kind of anti-error control method of disconnecting switch for 110kV power networks, it is characterised in that step is：
（1）, disconnecting switch normal work when, current sensor senses electric current on moving knife bar, now, the two of current sensor
30A-40A the first induced-current is produced in secondary coil, the first induced-current is acted on the first electromagnetic lock through wire；Make first
Electric current on first coil band in electromagnetic lock；
（2）, 30A-40A the first induced-current make the first coil in the first electromagnetic lock powered, make what first coil was wound
First iron core produces the first magnetic field that magnetic induction intensity is 500T-600T；The moving knife dead bolt action of first electromagnetic lock is so as to lock
Movable cutter mechanism makes it can not complete disconnection action；
（3）, the first iron core band magnetic field after, under magneticaction pull or promote the first electromagnetic lock moving knife dead bolt, moving knife dead bolt
On by 50N-70N pulling force or thrust；
（4）, moving knife dead bolt pull or promote moving knife latch mechanism rise or fall, its move distance be more than 3cm, moving knife latch mechanism
Lower end moving knife post is locked on switch frame and movable cutter mechanism is locked as closure state；
（5）, after the electric current in disconnecting switch is disconnected, the first induced-current on current sensor disappears, and senses without first
Electric current enters in the first electromagnetic lock, the power-off of the first electromagnetic lock, and the moving knife dead bolt in the first electromagnetic lock is in its first spring 20-30N
Elastic force effect under reset to unlocked position, while moving knife dead bolt push or pull on moving knife latch mechanism movement and to moving knife post solution
Lock；
（6）, the disconnecting switch moving knife bar be in operating position or open position when, voltage sensor senses band on quiet cutter head
There is the alternating voltage over the ground more than 10kv, in the secondary side formation 10A-20A of voltage sensor the second induced-current；
（7）, the second induced-current enter after the second electromagnetic lock, flow through the second coil in the second electromagnetic lock and on the second coil
The second magnetic field is produced, second magnetic field is conducted by the second iron core wound by the second coil, now the magnetic strength on the second iron core
It is 300T-450T to answer intensity；Magnetic force on second iron core pulls on or promoted the earthing knife-switch dead bolt of the second electromagnetic lock to act；
（8）, earthing knife-switch dead bolt acted on the earthing knife-switch latch mechanism being connected on earthing knife-switch dead bolt 30-40N pulling force or thrust；Earthing knife-switch is locked
Mechanism is moved up or down in the presence of pulling force or thrust, and its distance moved is more than 5cm；
（9）, earthing knife-switch latch mechanism lower end the action of ground cutter shaft is locked, or the lower end of earthing knife-switch latch mechanism is made by link gear
Ground cutter shaft is locked as off-state；
（10）, when the voltage on the quiet cutter head of disconnecting switch be reduced to allow close earthing knife-switch magnitude of voltage when, voltage sensor without
Method senses that the voltage-to-ground on alternating voltage over the ground or its quiet cutter head on quiet cutter head meets the requirement of closure earthing knife-switch, and voltage is passed
Second induced-current of the secondary side of sensor disappears or reduced, the magnetic induction intensity reduction of the second coil in the second electromagnetic lock, the
Two iron cores are less than the elastic force of second back-moving spring to the pulling force or thrust of earthing knife-switch dead bolt, and the size of the elastic force is 15N-20N, earthing knife-switch
Dead bolt is resetted under the elastic force effect of second back-moving spring, and earthing knife-switch dead bolt is driven under the action of earthing knife-switch latch mechanism, earthing knife-switch latch mechanism
Cutter shaft is unlocked over the ground at end；
（11）, when the moving knife post of movable cutter mechanism needs rotational action, control by disconnecting switch electric current drop zero, three are isolated
Moving knife latch mechanism unblock on switch, three moving knife latch mechanisms are moved up or moved down simultaneously in the presence of moving knife connecting rod, its moving knife
The triangular structure that connecting rod is constituted with moving knife latch mechanism can strengthen the degree of stability of its structure, make the disconnecting switch of three-phase simultaneously
Unblock is locked；
（12）, when the moving knife post of disconnecting switch turns to open position, moving knife post pull located at moving knife post lower end first from
Latch and self-lock rod acted on 50N-80N pulling force or thrust；Under pulling force or thrust, the self-lock rod other end located at ground cutter shaft
The second self-fastening button movement at place, and cutter shaft is unlocked over the ground；
（13）, the second self-fastening button and earthing knife-switch latch mechanism be over the ground after cutter shaft unblock, when the earthing knife-switch of three-phase isolation switch needs closure
During action, the ground knife bar of three-phase is rotated up simultaneously in the presence of earthing knife-switch connecting rod, until earthing knife-switch upper end and the ground on quiet cutter head
Knife interface is connected；
（14）, earthing knife-switch close to closure state when, the second self-fastening button of earthing knife-switch lower end act pulled or promoted with 50N-80N power from
Locking bar, the first self-fastening button positioned at moving knife post lower end is acted in the presence of the pulling force or thrust of self-lock rod, moving knife post lower end
Disconnecting switch is locked as off-state by the first self-fastening button；
（15）, local knife bar is when being located at open position, in disconnecting switch closing course, the moving knife post of disconnecting switch drives below
The first self-fastening button action, the first self-fastening button acts self-lock rod with 50N-80N pulling force or thrust, below ground cutter shaft
Earthing knife-switch lever lock is set to off-state by the second self-fastening button, while with alternating voltage over the ground on the quiet cutter head of voltage sensor senses,
Earthing knife-switch latch mechanism further locks ground cutter shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674265.4A CN105390327B (en) | 2015-10-19 | 2015-10-19 | The anti-error control method of disconnecting switch for 110kV power networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510674265.4A CN105390327B (en) | 2015-10-19 | 2015-10-19 | The anti-error control method of disconnecting switch for 110kV power networks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105390327A CN105390327A (en) | 2016-03-09 |
| CN105390327B true CN105390327B (en) | 2017-10-20 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011020507A1 (en) * | 2009-08-20 | 2011-02-24 | Siemens Aktiengesellschaft | Breaker module for medium-voltage switchgear and medium-voltage switchgear |
| CN201570424U (en) * | 2009-12-09 | 2010-09-01 | 武汉钢铁(集团)公司 | Switch interlocking device of high-voltage isolating switch |
| US8593030B2 (en) * | 2010-07-09 | 2013-11-26 | Nikhil Mondal | Rotating electric machine for generating a constant frequency AC Power Supply from a variable speed primemover |
| CN202423057U (en) * | 2011-12-27 | 2012-09-05 | 苏州万龙电气集团股份有限公司 | Isolating switch device |
| CN103354191B (en) * | 2013-07-02 | 2016-04-13 | 鼎阳电力科技服务有限公司 | A kind of device preventing high voltage isolator on-load operation |
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| CN105390327A (en) | 2016-03-09 |
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