CN105390327A - Isolating switch error control preventing method for 110kV power grid - Google Patents
Isolating switch error control preventing method for 110kV power grid Download PDFInfo
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- CN105390327A CN105390327A CN201510674265.4A CN201510674265A CN105390327A CN 105390327 A CN105390327 A CN 105390327A CN 201510674265 A CN201510674265 A CN 201510674265A CN 105390327 A CN105390327 A CN 105390327A
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- ground
- cutter
- isolating switch
- moving knife
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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
The invention provides an isolating switch error control preventing method for a 110kV power grid. The isolating switch error control preventing method comprises the steps of inducing an electric current on a dynamic pole in normal operation of an isolating switch, meanwhile, generating a 30A-40A induction current in the secondary coil of the current sensor, and applying the induction current on an electromagnetic lock through a lead; applying the current on a current induction coil in the electromagnetic lock; and the rest steps are described in a description. The isolating switch error control preventing method has advantages of reducing circuit length and circuit complexity of a locking unit, preventing error signals or connection requirement reduction by circuit complexity or locking unit safety reduction caused by overlarge circuit length, preventing high-voltage accidents or high-voltage grounding caused by low insulation performance in downward transmission of the current through converting the circuit to an action mechanism over the dynamic pole, simultaneously making the electromagnetic mechanism act quickly, improving accuracy of an electromagnetic lock mechanism, and preventing error unlocking or locking action caused by the error signal, realizing inter-phase unified action of the isolating switch, and furthermore realizing mechanical locking between the dynamic pole and the ground pole of the isolating switch.
Description
Technical field
The present invention relates to the anti-error control method of a kind of isolating switch for 110kv electrical network.
Background technology
For the device for switching that the anti-error control method of isolating switch of 110kv electrical network is important in power plant and transformer station's electrical system, need support the use with primary cut-out, its major function is: ensure High-Voltage Electrical Appliances and the safety of device when service work, play isolation voltage, can not with cut-out, drop into load current and cut-off short circuit current, only can be used for some handover operation not producing powerful electric arc, that is to say that it does not have arc-suppression function; Be divided into by infield difference, within doors formula outside formula and room, be divided into by insulation column number, open side type, queen post and three pillar type, each electric pressure has optional equipment.The anti-error control method of isolating switch for 110kv electrical network ensure that High-Voltage Electrical Appliances and the safety of device when service work, play isolation voltage, can not with cut-out, drop into load current and cut-off short circuit current, only can be used for some handover operation not producing powerful electric arc, that is to say that it does not have arc-suppression function; Be divided into by infield difference, within doors formula outside formula and room, be divided into by insulation column number, open side type, queen post and three pillar type, each electric pressure has optional equipment.Also reliably can isolate needing in high voltage distribution installation the part had a power failure with live part, to ensure the safety of service work.The contact of the anti-error control method of the isolating switch for 110kv electrical network is all in atmosphere open, there is obvious cut-off point, isolating switch does not have arc-control device, therefore can not be used for cutting off load current or short circuit current, otherwise under High Pressure, cut-off point will produce strong electric arc, and be difficult to self-extinguish, even may cause arcing, scaling loss equipment, jeopardize personal safety, the serious accident that Here it is so-called " on-load draws isolating switch ".The anti-error control method of isolating switch for 110kv electrical network can also be used to the handover operation carrying out some circuit, to change the operational mode of system.Such as: in double-bus circuit, by the anti-error control method of isolating switch for 110kv electrical network, operating circuit can be switched to another bus from a bus.
Present isolating switch is frequently used in each transformer station, the action of isolating switch is generally carry out far distance controlled by control desk, the anti-error control method of isolating switch for 110kv electrical network can not this feature of on-load action, existing " five prevent " is although some safeguards have been done in measure, but due to misoperation, or the reason such as controller error signal, cause isolating switch most probably or be arranged on the ground cutter misoperation on isolating switch, cause serious danger, harm power grid security.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, there is provided a kind of isolating switch for 110kv electrical network anti-error control method, isolating switch arranges locking device, when avoiding because of control desk far distance controlled, produce rub-out signal, the anti-error control method malfunction of isolating switch being used in 110kv electrical network affects the fail safe of equipment, avoid personnel's misoperation, controller error signal is on the impact of isolating switch safety, improve the fail safe of electrical network, avoid the anti-error control method malfunction of isolating switch for 110kv electrical network to the impact of personal safety, this locking device directly utilizes the electric current that the induction of coil produces, without the need to other power supply, avoid the impact that electric power system normally uses this locking device.
The technical solution used in the present invention is as follows:
The invention discloses the anti-error control method of a kind of isolating switch for 110kv electrical network, comprise the following steps:
(1), isolating switch is when normally working, and current sensor senses electric current on moving knife bar, and now, produce the induced current of 30A-40A in the secondary coil of current sensor, induced current acts on electromagnetic lock through wire; In electromagnetic lock, to power on stream at electric current line of induction astragal;
(2), the induced current of 30A-40A makes the coil in electromagnetic lock charged, and the magnetic flux density that the iron core that coil is wound around produces is 500T-600T; Make the action of moving knife dead bolt thus lock this moving knife unit to complete disconnection action;
(3), behind iron core band magnetic field, under magneticaction, pull or promote the dead bolt of electromagnetic lock, dead bolt is subject to pulling force or the thrust of 50N-70N;
(4), dead bolt pulls or promotes moving knife latch mechanism and rise or decline, and the distance of its movement is greater than 3cm, and moving knife post to lock onto on switch frame and is locked as closure state by the lower end of movable cutter mechanism;
(5), after the electric current on isolating switch is disconnected, induced current on current sensor disappears, influence electricity flows in electromagnetic lock, electromagnetic lock power-off, the dead bolt of electromagnetic lock is under the elastic force effect of its spring 20-30N, dead bolt resets to unlocked position, and dead bolt promotes or pulls moving knife latch mechanism to move and unlock moving knife post simultaneously.
(6), the moving knife bar of this isolating switch is when being in service position or open position, and voltage sensor senses with the alternating voltage being over the ground greater than 10kv on quiet cutter head, forms the induced current of 10A-20A at the secondary side of voltage sensor;
(7), after induced current enters electromagnetic lock, flow through the coil in electromagnetic lock and produce magnetic field on coil, this magnetic field is by being conducted by the iron core of coil winding, and the magnetic flux density now on iron core is 300T-450T; Magnetic force on iron core will pull or promote the dead bolt action of electromagnetic lock;
(8), dead bolt has acted on pulling force or the thrust of 30-40N to the ground cutter latch mechanism be connected on dead bolt; Ground cutter latch mechanism moves up or down under the effect of pulling force or thrust, and the distance of its movement is greater than 5cm;
(9), the lower end of cutter latch mechanism the action of moving knife post is locked, or the lower end of ground cutter latch mechanism makes moving knife post be locked as off-state by link gear;
(10), when voltage drop on the quiet cutter head of isolating switch is low to moderate the magnitude of voltage allowing to close ground cutter, voltage sensor cannot sense that the alternating voltage over the ground on quiet cutter head or the voltage to earth on its quiet cutter head meet the requirement of closed ground cutter, the secondary side induced current of voltage sensor disappears or reduces, the magnetic flux density of electromagnetic lock interior loop reduces, iron core is to the pulling force of dead bolt or the thrust elastic force lower than dead bolt back-moving spring, the size of this elastic force is 15N-20N, dead bolt resets under the elastic force effect of back-moving spring, dead bolt drives ground cutter latch mechanism action, the lower end cutter shaft unblock over the ground of ground cutter latch mechanism.
(11), when the moving knife post of movable cutter mechanism needs rotational action, the electric current on isolating switch is controlled to fall zero, moving knife latch mechanism on three-phase isolation switch unlocks, three moving knife latch mechanisms under the effect of moving knife connecting rod simultaneously on move or move down, the triangular structure that its moving knife connecting rod and moving knife latch mechanism form can strengthen the degree of stability of its structure, makes the isolating switch of three-phase unlock simultaneously or lock;
(12), when the moving knife post of isolating switch turns to open position, moving knife post pulls the self-fastening button being located at moving knife post lower end, and self-fastening button is to the pulling force of self-lock rod effect 50N-80N or thrust; The self-lock rod other end be located at ground the moving at pulling force or thrust self-fastening button of cutter shaft place, and cutter shaft unlocks over the ground;
(13), interlocking unit and ground cutter lock cell are after cutter shaft unlocks all over the ground, when the ground cutter of three-phase isolation switch needs closed action, the ground knife bar of three-phase upwards rotates under the effect of ground cutter connecting rod simultaneously, until cutter upper end, ground is connected with the ground cutter interface on quiet cutter head;
(14) when cutter is close to closure state, the self-fastening button action of cutter lower end, ground pulls with the power of 50N-80N or promotes self-lock rod, be positioned at self-fastening button action under the pulling force of self-lock rod or the effect of thrust of moving knife post lower end, isolating switch is locked as off-state by the self-fastening button of moving knife post lower end;
(15) when, local knife bar is positioned at open position, in isolating switch closing course, isolating switch drives the self-fastening button action below it, self-fastening button makes self-lock rod action with the pulling force of 50N-80N or thrust, be positioned at the self-fastening button below ground cutter shaft, ground knife bar is locked as off-state, and side by side cutter lock cell detects with alternating voltage over the ground on quiet cutter head, and ground cutter shaft locks by moving knife lock cell further.
Owing to have employed said method, circuit length and the complexity of lock cell can be reduced, avoid circuit long and the signal or reduce the impact of fail safe of circuit complexity on the requirement connected or lock cell of making the mistake, its circuit is just converted to actuating mechanism above moving knife post, when avoiding electric current to transmit downwards, cause because insulating properties is bad that Keep Clear-High Voltage or the danger of ground connection, enable electromagnetic mechanism action rapidly simultaneously, improve the accuracy of electromagnetic lock mechanism, avoid rub-out signal and the false release that causes or lock out action.The alternate integrating action of isolating switch can be realized, realize the mechanical latching between the moving knife of isolating switch and ground cutter simultaneously, effectively prevent moving knife and the ground cutter closed potential safety hazard caused simultaneously, effectively can improve alternate fail safe and the uniformity of isolating switch, strengthen the fail safe of electrical network simultaneously.The alternate integrating action of isolating switch can be realized, realize the mechanical latching between the moving knife of isolating switch and ground cutter simultaneously, effectively prevent moving knife and the ground cutter closed potential safety hazard caused simultaneously, effectively can improve alternate fail safe and the uniformity of isolating switch, strengthen the fail safe of electrical network simultaneously.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, the locking device structure of this isolating switch is simple, easy for installation, with low cost, is easy to repacking; This design in addition, can by the movable cutter mechanism of isolating switch, cutter mechanism realize safety locking, avoid belt current disconnect ground cutter, charged closed ground cutter situation generation.The side by side safety interlock of cutter mechanism and movable cutter mechanism, both guarantees cannot close simultaneously.
2, the defect of existing isolating switch design filled up by this locking device, enhances the security performance of isolating switch; Simplify the control circuit of locking device, avoid circuit long or cross auxiliary and potential safety hazard that is that cause, adopt mechanical mechanism more reliably, effectively avoid control circuit power-off, the situation causing isolating switch to protect occurs.
3, the locking device of this isolating switch avoids because of rub-out signal or faulty operation, and the generation of the situation of the equipment caused, the person, power grid accident.
4, the locking device of this isolating switch is simple, so that the isolated switchgear installed to be reequiped, can have good easy generalization.
5, this locking device is simple with circuit structure, and circuit is short, avoids the impact of long distance signal transmission on signaling security.
6, this locking means, exquisite composition, can ensure isolating switch greatly not because misoperation or error signal affect electric network security.
Accompanying drawing explanation
Fig. 1 is the isolating switch structure chart for 110kv electrical network in the present invention;
Mark in figure: 1-switch frame, 2-ground cutter mechanism, 21-ground knife bar, 22-ground cutter shaft, 23-ground cutter electromagnetic mechanism, 24-ground cutter dead bolt, the quiet cutter mechanism of 3-, the quiet tool post of 31-, 32-voltage sensor, the quiet cutter head of 33-, 4-movable cutter mechanism, 41-moving knife bar, 42-moving knife post, 43-current sensor, 44-moving knife electromagnetic mechanism, 45-moving knife dead bolt, 46-moving knife motor.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
specific embodiment:
As shown in Figure 1
The anti-error control method of isolating switch of the present invention:
(1), isolating switch is when normally working, and current sensor 43 senses electric current on moving knife bar 41, and now, produce the induced current of 30A-40A in the secondary coil of current sensor 43, induced current acts on electromagnetic lock through wire; In electromagnetic lock, to power on stream at electric current line of induction astragal;
(2), the induced current of 30A-40A makes the coil in electromagnetic lock charged, and the magnetic flux density that the iron core that coil is wound around produces is 500T-600T; Make the action of moving knife dead bolt thus lock this moving knife unit to complete disconnection action;
(3), behind iron core band magnetic field, under magneticaction, pull or promote the dead bolt of electromagnetic lock, dead bolt is subject to pulling force or the thrust of 50N-70N;
(4), dead bolt pulls or promotes moving knife latch mechanism and rise or decline, and the distance of its movement is greater than 3cm, and moving knife post 42 to lock onto on switch frame 1 and is locked as closure state by the lower end of movable cutter mechanism 4;
(5), after the electric current on isolating switch is disconnected, induced current on current sensor 43 disappears, influence electricity flows in electromagnetic lock, electromagnetic lock power-off, the dead bolt of electromagnetic lock is under the elastic force effect of its spring 20-30N, dead bolt resets to unlocked position, and dead bolt promotes or pulls moving knife latch mechanism to move and unlock moving knife post 42 simultaneously.
(6), the moving knife bar 41 of this isolating switch is when being in service position or open position, and voltage sensor 32 senses with the alternating voltage being over the ground greater than 10kv on quiet cutter head 33, forms the induced current of 10A-20A at the secondary side of voltage sensor 32;
(7), after induced current enters electromagnetic lock, flow through the coil in electromagnetic lock and produce magnetic field on coil, this magnetic field is by being conducted by the iron core of coil winding, and the magnetic flux density now on iron core is 300T-450T; Magnetic force on iron core will pull or promote the dead bolt action of electromagnetic lock;
(8), dead bolt has acted on pulling force or the thrust of 30-40N to the ground cutter latch mechanism be connected on dead bolt; Ground cutter latch mechanism moves up or down under the effect of pulling force or thrust, and the distance of its movement is greater than 5cm;
(9), the lower end of cutter latch mechanism the action of moving knife post 42 is locked, or the lower end of ground cutter latch mechanism makes moving knife post 42 be locked as off-state by link gear;
(10), when voltage drop on the quiet cutter head 33 of isolating switch is low to moderate the magnitude of voltage allowing to close ground cutter, voltage sensor 32 cannot sense that the alternating voltage over the ground on quiet cutter head 33 or the voltage to earth on its quiet cutter head 33 meet the requirement of closed ground cutter, the secondary side induced current of voltage sensor 32 disappears or reduces, the magnetic flux density of electromagnetic lock interior loop reduces, iron core is to the pulling force of dead bolt or the thrust elastic force lower than dead bolt back-moving spring, the size of this elastic force is 15N-20N, dead bolt resets under the elastic force effect of back-moving spring, dead bolt drives ground cutter latch mechanism action, the lower end of ground cutter latch mechanism over the ground cutter shaft 22 unlocks.
(11), when the moving knife post 42 of movable cutter mechanism 4 needs rotational action, the electric current on isolating switch is controlled to fall zero, moving knife latch mechanism on three-phase isolation switch unlocks, three moving knife latch mechanisms under the effect of moving knife connecting rod simultaneously on move or move down, the triangular structure that its moving knife connecting rod and moving knife latch mechanism form can strengthen the degree of stability of its structure, makes the isolating switch of three-phase unlock simultaneously or lock;
(12), when the moving knife post 42 of isolating switch turns to open position, moving knife post 42 pulls the self-fastening button being located at moving knife post 42 lower end, and self-fastening button is to the pulling force of self-lock rod effect 50N-80N or thrust; The self-lock rod other end be located at ground the moving at pulling force or thrust self-fastening button of cutter shaft 22 place, and cutter shaft 22 unlocks over the ground;
(13), interlocking unit and ground cutter lock cell are after cutter shaft 22 unlocks all over the ground, when the ground cutter of three-phase isolation switch needs closed action, the ground knife bar 21 of three-phase upwards rotates under the effect of ground cutter connecting rod simultaneously, until cutter upper end, ground is connected with the ground cutter interface on quiet cutter head 33;
(14) when cutter is close to closure state, the self-fastening button action of cutter lower end, ground pulls with the power of 50N-80N or promotes self-lock rod, be positioned at self-fastening button action under the pulling force of self-lock rod or the effect of thrust of moving knife post 42 lower end, isolating switch is locked as off-state by the self-fastening button of moving knife post 42 lower end;
(15) when, local knife bar 21 is positioned at open position, in isolating switch closing course, isolating switch drives the self-fastening button action below it, self-fastening button makes self-lock rod action with the pulling force of 50N-80N or thrust, be positioned at the self-fastening button below ground cutter shaft 22, ground knife bar 21 is locked as off-state, and side by side cutter lock cell detects with alternating voltage over the ground on quiet cutter head 33, and ground cutter shaft 22 locks by moving knife lock cell further.
Owing to have employed said method, due to said method, circuit length and the complexity of lock cell can be reduced, avoid circuit long and the signal or reduce the impact of fail safe of circuit complexity on the requirement connected or lock cell of making the mistake, its circuit is just converted to actuating mechanism above moving knife post 42, when avoiding electric current to transmit downwards, cause because insulating properties is bad that Keep Clear-High Voltage or the danger of ground connection, enable electromagnetic mechanism action rapidly simultaneously, improve the accuracy of electromagnetic lock mechanism, avoid rub-out signal and the false release that causes or lock out action.The alternate integrating action of isolating switch can be realized, realize the mechanical latching between the moving knife of isolating switch and ground cutter simultaneously, effectively prevent moving knife and the ground cutter closed potential safety hazard caused simultaneously, effectively can improve alternate fail safe and the uniformity of isolating switch, strengthen the fail safe of electrical network simultaneously.The alternate integrating action of isolating switch can be realized, realize the mechanical latching between the moving knife of isolating switch and ground cutter simultaneously, effectively prevent moving knife and the ground cutter closed potential safety hazard caused simultaneously, effectively can improve alternate fail safe and the uniformity of isolating switch, strengthen the fail safe of electrical network simultaneously.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1. the locking device structure of this isolating switch is simple, easy for installation, with low cost, is easy to repacking; This design in addition, can by the movable cutter mechanism 4 of isolating switch, cutter mechanism 2 realize safety locking, avoid belt current disconnect ground cutter, charged closed ground cutter situation generation.The side by side safety interlock of cutter mechanism 2 and movable cutter mechanism 4, both guarantees cannot close simultaneously.
2. the defect of existing isolating switch design filled up by this locking device, enhances the security performance of isolating switch; Simplify the control circuit of locking device, avoid circuit long or cross auxiliary and potential safety hazard that is that cause, adopt mechanical mechanism more reliably, effectively avoid control circuit power-off, the situation causing isolating switch to protect occurs.
3. the locking device of this isolating switch avoids because of rub-out signal or faulty operation, and the generation of the situation of the equipment caused, the person, power grid accident.
4. the locking device of this isolating switch is simple, so that the isolated switchgear installed to be reequiped, can have good easy generalization.
5. this locking device is simple with circuit structure, and circuit is short, avoids the impact of long distance signal transmission on signaling security.
6. this locking means, exquisite composition, can ensure isolating switch greatly not because misoperation or error signal affect electric network security.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1., for the anti-error control method of isolating switch of 110kv electrical network, it is characterized in that, step is:
(1), isolating switch is when normally working, and current sensor senses electric current on moving knife bar, and now, produce the induced current of 30A-40A in the secondary coil of current sensor, induced current acts on electromagnetic lock through wire; In electromagnetic lock, to power on stream at electric current line of induction astragal;
(2), the induced current of 30A-40A makes the coil in electromagnetic lock charged, and the magnetic flux density that the iron core that coil is wound around produces is 500T-600T; Make the action of moving knife dead bolt thus lock this moving knife unit to complete disconnection action;
(3), behind iron core band magnetic field, under magneticaction, pull or promote the dead bolt of electromagnetic lock, dead bolt is subject to pulling force or the thrust of 50N-70N;
(4), dead bolt pulls or promotes moving knife latch mechanism and rise or decline, and the distance of its movement is greater than 3cm, and moving knife post to lock onto on switch frame and is locked as closure state by the lower end of movable cutter mechanism;
(5), after the electric current on isolating switch is disconnected, induced current on current sensor disappears, influence electricity flows in electromagnetic lock, electromagnetic lock power-off, the dead bolt of electromagnetic lock is under the elastic force effect of its spring 20-30N, dead bolt resets to unlocked position, and dead bolt promotes or pulls moving knife latch mechanism to move and unlock moving knife post simultaneously;
(6), the moving knife bar of this isolating switch is when being in service position or open position, and voltage sensor senses with the alternating voltage being over the ground greater than 10kv on quiet cutter head, forms the induced current of 10A-20A at the secondary side of voltage sensor;
(7), after induced current enters electromagnetic lock, flow through the coil in electromagnetic lock and produce magnetic field on coil, this magnetic field is by being conducted by the iron core of coil winding, and the magnetic flux density now on iron core is 300T-450T; Magnetic force on iron core will pull or promote the dead bolt action of electromagnetic lock;
(8), dead bolt has acted on pulling force or the thrust of 30-40N to the ground cutter latch mechanism be connected on dead bolt; Ground cutter latch mechanism moves up or down under the effect of pulling force or thrust, and the distance of its movement is greater than 5cm;
(9), the lower end of cutter latch mechanism the action of moving knife post is locked, or the lower end of ground cutter latch mechanism makes moving knife post be locked as off-state by link gear;
(10), when voltage drop on the quiet cutter head of isolating switch is low to moderate the magnitude of voltage allowing to close ground cutter, voltage sensor cannot sense that the alternating voltage over the ground on quiet cutter head or the voltage to earth on its quiet cutter head meet the requirement of closed ground cutter, the secondary side induced current of voltage sensor disappears or reduces, the magnetic flux density of electromagnetic lock interior loop reduces, iron core is to the pulling force of dead bolt or the thrust elastic force lower than dead bolt back-moving spring, the size of this elastic force is 15N-20N, dead bolt resets under the elastic force effect of back-moving spring, dead bolt drives ground cutter latch mechanism action, the lower end cutter shaft unblock over the ground of ground cutter latch mechanism,
(11), when the moving knife post of movable cutter mechanism needs rotational action, the electric current on isolating switch is controlled to fall zero, moving knife latch mechanism on three-phase isolation switch unlocks, three moving knife latch mechanisms under the effect of moving knife connecting rod simultaneously on move or move down, the triangular structure that its moving knife connecting rod and moving knife latch mechanism form can strengthen the degree of stability of its structure, makes the isolating switch of three-phase unlock simultaneously or lock;
(12), when the moving knife post of isolating switch turns to open position, moving knife post pulls the self-fastening button being located at moving knife post lower end, and self-fastening button is to the pulling force of self-lock rod effect 50N-80N or thrust; The self-lock rod other end be located at ground the moving at pulling force or thrust self-fastening button of cutter shaft place, and cutter shaft unlocks over the ground;
(13), interlocking unit and ground cutter lock cell are after cutter shaft unlocks all over the ground, when the ground cutter of three-phase isolation switch needs closed action, the ground knife bar of three-phase upwards rotates under the effect of ground cutter connecting rod simultaneously, until cutter upper end, ground is connected with the ground cutter interface on quiet cutter head;
(14) when cutter is close to closure state, the self-fastening button action of cutter lower end, ground pulls with the power of 50N-80N or promotes self-lock rod, be positioned at self-fastening button action under the pulling force of self-lock rod or the effect of thrust of moving knife post lower end, isolating switch is locked as off-state by the self-fastening button of moving knife post lower end;
(15) when, local knife bar is positioned at open position, in isolating switch closing course, isolating switch drives the self-fastening button action below it, self-fastening button makes self-lock rod action with the pulling force of 50N-80N or thrust, be positioned at the self-fastening button below ground cutter shaft, ground knife bar is locked as off-state, and side by side cutter lock cell detects with alternating voltage over the ground on quiet cutter head, and ground cutter shaft locks by moving knife lock cell further.
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 |
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| Publication Number | Publication Date |
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| CN105390327A true CN105390327A (en) | 2016-03-09 |
| CN105390327B CN105390327B (en) | 2017-10-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201570424U (en) * | 2009-12-09 | 2010-09-01 | 武汉钢铁(集团)公司 | Switch interlocking device of high-voltage isolating switch |
| WO2011020507A1 (en) * | 2009-08-20 | 2011-02-24 | Siemens Aktiengesellschaft | Breaker module for medium-voltage switchgear and medium-voltage switchgear |
| 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 |
| CN103354191A (en) * | 2013-07-02 | 2013-10-16 | 保定鼎阳电力科技发展有限公司 | Device capable of preventing on-load operation 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 |
-
2015
- 2015-10-19 CN CN201510674265.4A patent/CN105390327B/en active Active
Patent Citations (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 |
| CN103354191A (en) * | 2013-07-02 | 2013-10-16 | 保定鼎阳电力科技发展有限公司 | Device capable of preventing on-load operation of high-voltage isolating switch |
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| Publication number | Publication date |
|---|---|
| CN105390327B (en) | 2017-10-20 |
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