CN105448548B - On-load tap-changer of transformer - Google Patents
On-load tap-changer of transformer Download PDFInfo
- Publication number
- CN105448548B CN105448548B CN201510974624.8A CN201510974624A CN105448548B CN 105448548 B CN105448548 B CN 105448548B CN 201510974624 A CN201510974624 A CN 201510974624A CN 105448548 B CN105448548 B CN 105448548B
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- branch road
- vacuum interrupter
- permanent magnet
- specified
- magnet mechanism
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0038—Tap change devices making use of vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a kind of on-load tap-changer of transformer, each phase includes being respectively equipped with the specified branch road of a vacuum interrupter, boost branch road, it is depressured branch road and one and the transition branch road of the specified branch circuit parallel connection, the transition branch road includes the transition vacuum interrupter for being serially connected with resistance, also include being used to drive the boosting permanent magnet mechanism that the vacuum interrupter in three-phase voltage increasing branch road is opened or closed, for driving the decompression permanent magnet mechanism and the specified permanent magnet mechanism for driving each vacuum interrupter in the specified branch road of three-phase and transition branch road to be opened or closed that the vacuum interrupter in three-phase step-down branch road is opened or closed.
Description
Technical field
The invention belongs to power industry technical field of transformer equipment, more particularly to a kind of carried for having on transformer to adjust
Compress switch.
Background technology
In National Energy Board's issue《Distribution network construction transforms action plan（2015~2020）》In, the section of power distribution station
It can lower consumption, power supply quality is intelligent, and reliability etc. requires have greatly improved, and distribution transformer has on-load voltage regulation function
Also it is increasingly urgent.
At present, existing distribution transformer is commonplace uses compound on-load voltage regulating switch, and this switch is present
Following shortcoming：During switching branch joint, contact easily forms electric arc, and this causes contact to be damaged, and oil is easily occurred
The maintenance, it is necessary to which periodical power failure is changed oil is deteriorated, continuously transferring the files can cause oil temperature to raise, unsuitable frequent pressure regulation；Furthermore it uses electronic
Machine, which rotates, gives spring energy agency energy storage, then crosses the mode that dead point discharges suddenly and drives tap contact to carry out cutting for voltage gear
Change.This driving mechanism structure is complicated, and part is more, and fault rate is high, and reliability is low, and shunting switch responsiveness is slow, during response
Between it is long.
The content of the invention
In view of the above-mentioned problems, this patent provides a kind of simple in construction, long lifespan, the non-maintaining, three-phase three that has a wide range of application
Gear on-load voltage regulating switch.
To achieve these goals, this patent uses following technical scheme：A kind of on-load tap-changer of transformer, Mei Yixiang
Specified branch road, boosting branch road, decompression branch road and one and the specified branch circuit parallel connection including being respectively equipped with a vacuum interrupter
Transition branch road, the transition branch road includes being serially connected with the transition vacuum interrupter of resistance, includes being used to drive three-phase voltage increasing
Boosting permanent magnet mechanism that vacuum interrupter in branch road is opened or closed, for driving the vacuum interrupter in three-phase step-down branch road
The decompression permanent magnet mechanism that is opened or closed and for driving each vacuum interrupter in the specified branch road of three-phase and transition branch road to disconnect
Or the specified permanent magnet mechanism of closure；A pressure regulation is often carried out, it is following dynamic that each permanent magnet mechanism drives respective vacuum interrupter to carry out
Make：Permanent magnet mechanism driving transition vacuum interrupter closure specified first, then the permanent magnet mechanism corresponding to existing gear drives it
Vacuum interrupter disconnects, and then the permanent magnet mechanism corresponding to be switched gear drives its vacuum interrupter to close, it is last it is specified forever
Magnetic mechanism driving transition vacuum interrupter disconnects.Using permanent magnet mechanism as drive mechanism, instead of prior art makes the present invention
Motor spring energy agency, operational reliability significantly improve；Moreover, the present invention is boosting branch road, decompression branch road and volume
Determine a set of permanent magnet mechanism of each separate configurations of branch road, often cover permanent magnet mechanism and independently drive the vacuum interrupter of each branch road to be closed
With the action of disconnection, every branch road independent operating so that overall structure is simple, and switching time significantly improves, typically 10ms with
It is interior；Every branch road uses vacuum interrupter, efficiently solves arc extinguishing problem, realizes and exempts to tie up in the lifetime of transformer
Shield, applied widely, dry type and oil-filled transformer can be applied.
Preferably, the boosting permanent magnet mechanism drives the vacuum extinction in the boosting branch road by the transmission mechanism that boosts
Room is acted, and boosting permanent magnet mechanism often acts once, and the boosting transmission mechanism is driven in the boosting branch road of the three-phase
All vacuum interrupters are acted simultaneously；Decompression permanent magnet mechanism is true in the transmission mechanism driving decompression branch road by being depressured
Empty arc-chutes are acted, and decompression permanent magnet mechanism often acts once, and decompression transmission mechanism is driven in the decompression branch road of the three-phase
All vacuum interrupters simultaneously acted.Three-phase voltage increasing branch road, three-phase step-down branch road and the specified branch road of three-phase share respectively
A set of permanent magnet mechanism, more compact structure, synchronism are more preferable.
Further, the specified permanent magnet mechanism drives the specified branch road of the three-phase and three-phase mistake by specified transmission mechanism
The vacuum interrupter crossed in branch road is acted, and specified permanent magnet mechanism often acts once, and specified transmission mechanism drives three-phase transition
Transition vacuum interrupter in branch road switches to closure state by original off-state and switches back into off-state again, drives simultaneously
Vacuum interrupter in the specified branch road of three-phase is switched to off-state by original closure state or cut by original off-state
Shift to closure state；A set of specified permanent magnet mechanism meets the vacuum extinction in three-phase transition branch road and the specified branch road of three-phase simultaneously
The work requirements of room.
Match respectively with the vacuum interrupter in the specified branch road of three-phase preferably, the specified transmission mechanism includes three
Close the first connector, three the second connectors being engaged respectively with the vacuum interrupter in three-phase transition branch road and with described
The actuator that a connection piece, the second connector are engaged.Specified branch road and transition branch road share a permanent magnet mechanism, pass through respectively
Different connectors connects, and permanent magnet mechanism acts once, can be achieved the respective vacuum interrupter of two branch roads carry out it is different
Action.
Further, second connector include the sliding part that is slidably matched with actuator and with vacuum interrupter activity
The curved portions of cooperation.The setting of curved portions, realize permanent magnet mechanism and often act once, its corresponding vacuum interrupter can be from disconnected
Reach closure and arrive off-state again.
Or it is further, second connector includes the connecting portion being connected with actuator and matched somebody with somebody with vacuum interrupter activity
The curved portions of conjunction；It can also be that one end of actuator and the second connector is connected, be moved left and right by it to drive vacuum to go out
The up and down action of arc chamber moving contact.
Further, second connector includes the connecting portion coordinated with vacuum interrupter and matched somebody with somebody with actuator activity
The curved portions of conjunction.Curved portions and actuator carry out activity cooperation can also be acted to drive vacuum by the left and right of actuator
Arc-chutes are realized from closure is disconnected to again to the state of disconnection.
First connector and the second connector are respectively engaged by an insulator with corresponding vacuum interrupter；
Acted on by the electrical isolation of insulator so that the first connector and the second connector can use metal structure.
The three pressure regulation branch roads and a transition branch road of the present invention constitute gear switch system, three pressure regulation branch road bags
Include：Specified branch road, boosting branch road and decompression branch road, transition branch road and specified branch circuit parallel connection；Three pressure regulation branch roads respectively include one
Vacuum interrupter, transition branch road include a transition vacuum interrupter and the transition resistance of series connection with it；
Three vacuum interrupters in the transition branch road of three-phase and three vacuum interrupters in the specified branch road of three-phase are total to
With a sets of transmission mechanism, and share a permanent magnet mechanism；Permanent magnet mechanism often acts once, drives its transmission mechanism by designed
Sequential makes the action of these vacuum interrupters progress separating brake or combined floodgate.
Three vacuum interrupters in the boosting branch road of three-phase share a sets of transmission mechanism, share a permanent magnet mechanism, group
Into booster system；Permanent magnet mechanism often acts once, drives its transmission mechanism to enter these vacuum interrupters by designed sequential
The action of row separating brake or combined floodgate.
Three vacuum interrupters in the decompression branch road of three-phase share a sets of transmission mechanism, share a permanent magnet mechanism, group
Into depressurizing system；Permanent magnet mechanism often acts once, drives its transmission mechanism to enter these vacuum interrupters by designed sequential
The action of row separating brake or combined floodgate.
Transformer original state is to be in specified shelves, i.e., the vacuum interrupter of specified branch road is to close a floodgate, other branch roads
All vacuum interrupters are in gate-dividing state.The pressure regulation process boosted by original state is as follows：When low-pressure side output voltage is low
When setting, controller issues instructions to rating system and booster system while is powered, and the permanent magnet mechanism of two systems is simultaneously
Respective vacuum interrupter is driven to be acted by following sequential：Specified permanent magnet mechanism first drives transition branch road by one-off
Transition vacuum interrupter closes, and then drives corresponding vacuum interrupter in specified branch road to disconnect, and the permanent magnet mechanism that then boosts drives
Vacuum interrupter closure in dynamic boosting branch road, last specified permanent magnet mechanism drive the transition vacuum interrupter in transition branch road to break
Open, that is, complete conversion of the present gear to be switched gear, it is on the contrary then step is opposite.In whole handoff procedure, it is specified forever
Magnetic mechanism only acts once, you can completes driving transition vacuum interrupter by off-state to closure state again to off-state
One process, while complete to drive a process of the specified vacuum interrupter by closure state to off-state；And specified permanent magnetism
Mechanism and boosting permanent magnet mechanism link two-by-two, i.e., both needs are powered simultaneously starts to act, and simply each acts once
During, the action sequence of the vacuum interrupter driven has successively.
In handoff procedure, first connection transition branch road ensure that does not power off in gear transfer process, the mistake of transition branch road series connection
Crossing resistance limitation load current does not allow it to have big change, also acts as the effect of limiting coil circulation（In transition branch road and to be cut
There is coil loop miscarriage life gear shift position when being also turned on）.
Decompression shelves are switched to by specified shelves, it is as follows that it is depressured pressure regulation process：When low-pressure side output voltage is less than setting,
Controller issues instructions to rating system and depressurizing system while is powered, and the permanent magnet mechanism of Liang Tao mechanisms drives the vacuum simultaneously
Arc-chutes are acted by following sequential：Specified permanent magnet mechanism first drives the transition vacuum extinction in transition branch road by one-off
Room closes, and then drives corresponding vacuum interrupter in specified branch road to disconnect, and is then depressured in permanent magnet mechanism driving decompression branch road
Vacuum interrupter connect, last specified permanent magnet mechanism disconnects the transition vacuum interrupter in transition branch road, completes specified gear
To the conversion of decompression gear；It is on the contrary then step is opposite.In whole handoff procedure, specified permanent magnet mechanism only acts once, you can
Driving transition vacuum interrupter is completed by off-state to closure state again to a process of off-state, while complete to drive
Specified vacuum interrupter by closure state to off-state a process；And specified permanent magnet mechanism and decompression permanent magnet mechanism are two
Two linkages, i.e., both need to be powered simultaneously and start to act, during simply each acting once, the vacuum extinction that is driven
The action sequence of room has successively.
In summary, the beneficial effects of the invention are as follows：Make by the use of multiple permanent magnet mechanisms as drive mechanism, substitution prior art
Motor spring energy agency, simple in construction, reliability is high, and switching is rapid（Within 10ms）；Gear switch system is with very
Empty arc-chutes composition, efficiently solves arc extinguishing problem, realize it is non-maintaining in the lifetime of transformer, it is applied widely,
Dry type and oil-filled transformer can be applied, overall more safe and reliable.
Brief description of the drawings
Fig. 1 is the basic circuit schematic diagram of this patent.
Fig. 2 is the structural representation of rating system of the present invention.
Fig. 3 is the structural representation of present invention boosting and depressurizing system.
Fig. 4 is Fig. 2 partial structural diagram.
Fig. 5 is the action timing diagram of each vacuum interrupter under the specified permanent magnet mechanism driving of the present invention.
Fig. 6 is the action timing diagram of each vacuum interrupter under the boosting permanent magnet mechanism driving of the present invention.
Fig. 7 is the action timing diagram of each vacuum interrupter under the decompression permanent magnet mechanism driving of the present invention.
Wherein, K1 represents the vacuum interrupter in boosting branch road；K2 represents the vacuum interrupter in decompression branch road；Kg is represented
Vacuum interrupter in transition branch road；Kn represents the vacuum interrupter in specified branch road；Symbol " day " is represented at vacuum interrupter
In "on" position, symbol " mesh " represents that vacuum interrupter is in gate-dividing state；R represents transition resistance；T represents the time；Un is represented
Rated voltage.
Embodiment
In order that those skilled in the art are better understood from the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.
As shown in figs. 1-7, a kind of on-load tap-changer of transformer, per mutually including a specified branch respectively in A, B, C three-phase
Road, a boosting branch road, a decompression branch road and one and the transition branch road of the specified branch circuit parallel connection, specified branch road, boosting
A vacuum interrupter is respectively provided with branch road, decompression branch road；The transition branch road include the resistance that is connected in series with each other and
Transition vacuum interrupter;
Present invention additionally comprises also include a set of boosting permanent magnet mechanism 1, a set of decompression permanent magnet mechanism 2 and a set of specified permanent magnetic motor
Structure 3；Boosting permanent magnet mechanism 1 is used to drive the vacuum interrupter 11 in three-phase voltage increasing branch road to be opened or closed simultaneously, is depressured permanent magnetism
Mechanism 2 is used to drive the vacuum interrupter 21 in three-phase step-down branch road to be opened or closed simultaneously, and specified permanent magnet mechanism 3 is applied not only to
Being opened or closed for three-phase each vacuum interrupter 33 of specified branch road is driven simultaneously, and is driven simultaneously each in three-phase transition branch road
Vacuum interrupter 32 is by being disconnected to closure again to the action disconnected.
A pressure regulation is often carried out, each permanent magnet mechanism drives respective vacuum interrupter to carry out following act：First it is specified forever
Magnetic mechanism drives transition vacuum interrupter, and by being disconnected to closure, then the permanent magnet mechanism corresponding to existing gear drives its vacuum to go out
Arc chamber disconnects, and then the permanent magnet mechanism corresponding to be switched gear drives its vacuum interrupter to close, last specified permanent magnet mechanism
Transition vacuum interrupter is driven to disconnect.It is to be understood that each pressure regulation, each rating agencies only act once, specified permanent magnetism
Mechanism needs to meet that two sets of vacuum interrupters carry out different action process in the case of action once, and specific sequential is as schemed such as
Shown in Fig. 5-7, wherein Fig. 6 is the timing diagram of branch road of boosting, and Fig. 7 is the timing diagram for being depressured branch road, during each pressure regulation, be Fig. 5 and
Fig. 6 coordinates either Fig. 5 and Fig. 7 to coordinate appearance, and two rating agencies are powered, linked two-by-two simultaneously, and permanent magnet mechanism is acted into one
Secondary time decomposition is into tetra- small stages of T1, T2, T3, T4, each stage, the action situations of each arc-chutes be will according to when
Requirement on sequence figure is carried out；The present invention uses permanent magnet mechanism as power source, and is provided with three sets of power sources, i.e. every branch
The a set of permanent magnet mechanism of each self-configuring in road, during each pressure regulation, specified permanent magnet mechanism and other set permanent magnet mechanism is only needed to link two-by-two
To realize switching, respective configuration driven mechanism simplifying traditional linked manner, the mode for the rotation that discards tradition completely, driving are adopted
It is upper and lower or left and right linear driving, clever structure is non-maintaining, belongs to a great change in tap changer field.
Specifically, the boosting permanent magnet mechanism drives the vacuum interrupter in the boosting branch road by the transmission mechanism that boosts
Acted, boosting permanent magnet mechanism often acts once, drives the boosting transmission mechanism to drive in the boosting branch road of the three-phase
All vacuum interrupters simultaneously acted；Decompression permanent magnet mechanism is driven in the decompression branch road by being depressured transmission mechanism
Vacuum interrupter is acted, and decompression permanent magnet mechanism often acts once, and driving decompression transmission mechanism drives the decompression of the three-phase
All vacuum interrupters in branch road are acted simultaneously.
The specified permanent magnet mechanism is driven in the specified branch road of the three-phase and three-phase transition branch road by specified transmission mechanism
Vacuum interrupter acted, specified permanent magnet mechanism is often acted once, and specified transmission mechanism is driven in three-phase transition branch road
Transition vacuum interrupter switches to closure state by original off-state and switches back into off-state again, while drives three-phase specified
Vacuum interrupter in branch road switches to off-state by original closure state or switches to closure by original off-state
State, i.e., the vacuum interrupter in specified branch road are completed by being closed into off-state or during this section by being disconnected to closure state
Between, the transition vacuum interrupter in transition branch road then complete by original off-state switch to closure state switch back into again it is disconnected
One process of open state.The assurance of this time, what the special construction of mainly specified transmission mechanism was brought, and specified transmission
Mechanism will realize this effect, there is a variety of implementations, in the present embodiment, mainly using following structure：Specifically, the volume
Determine transmission mechanism is including three the first connector 41, three the second connectors, 42, actuators 31 and support 48, actuator
Can be the metallic rod of rod-like structure, specifically, three vacuum interrupters in the specified branch road of three-phase are respectively each with unification
The first described connector 41, first connector can be a metal arm, and the moving contact lower end of vacuum interrupter is fixed
An insulator 38 is connected with, insulator plays electrical isolation effect；And the lower end of insulator is rotatably coupled described first
Connector 41, and the other end of the first connector 41 is rotatably connected with actuator, when actuator 31 is in specified permanent magnet mechanism
When being swung under driving, the first connector drives the moving contact of vacuum interrupter to move up or down, and then realizes
The closed and disconnected of vacuum interrupter；
Three transition vacuum interrupters in three-phase transition branch road each match somebody with somebody a second described connector 42 of unification respectively,
Similarly, in order to carry out electrical equipment isolation processing, an insulator is all connected with below the moving contact of three transition vacuum interrupters, is insulated
The lower end of son is rotatably connected the second described connector, and second connector 42 includes what is be slidably matched with actuator 31
Sliding part 421 and the curved portions 422 coordinated with the activity of transition vacuum interrupter, specifically, sliding part 421 is a chute or convex
Portion, because lower end and the support 48 of connector rotatably coordinate, and actuator drives the second connection by the chute or convex portion
Part is swung, and is moved up and down so the moving contact of vacuum interrupter is then drive by curved portions 422；
Correspond to the first connector in the side wall of support 48 and the place of the second connector is equipped with groove 481, the groove
481 play a spacing effect, define the position range that actuator moves left and right；
If specified permanent magnet mechanism is horizontally disposed with, directly can be connected with actuator, and when specified permanent magnet mechanism is placed vertically
When, it is necessary to by setting a set of swing arm 33 to connect actuator, so as to which the up and down action of permanent magnet mechanism is converted into actuator
Swing；
Obviously, the structure of second connector can be various that only need to realize that specified permanent magnet mechanism often acts once,
First connector, the second connector drive respective vacuum interrupter to be acted according to Fig. 5 timing diagram, this implementation
Two kinds of implementations are still further enumerated in example, the first：Second connector 42 can be with actuator integrative-structure or
What actuator 31 was connected, it includes connecting portion and curved portions 422, and curved portions are identical with the structure of foregoing description, and deep-slotted chip breaker,
This mode needs to set a pulley to reduce the friction with curved portions in insulator end, and actuator directly drives the second company
Fitting is swung, and in swing process, driving insulator moves up and down；
Second connector 42 of another structure includes with the connecting portion of vacuum interrupter cooperation and movable with actuator 31
The curved portions 422 of cooperation, i.e. turn the second connector around setting, curved portions coordinate with actuator, and connecting portion is consolidated with insulator
Even, it can equally realize that actuator drives insulator to move up and down during swinging.
In the present embodiment, shown decompression transmission mechanism is identical with the structure for the transmission mechanism that boosts, provided with such as nominal drive
Actuator and the first connector in mechanism, actuator and the first connector rotatably coordinate, the other end of the first connector with
Vacuum interrupter rotatably coordinates, and actuator swings to drive moving up and down for the moving contact of vacuum interrupter, such as schemes
3rd, shown in 4, its structure is relatively simple, because decompression permanent magnet mechanism and boosting permanent magnet mechanism often act once, its each self-powered
Dynamic all vacuum interrupters are all synchronization actions, or are closed at, or are simultaneously switched off.
Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, it should all belong to the scope of protection of the invention.
Claims (8)
1. a kind of on-load tap-changer of transformer, each phase includes being respectively equipped with the specified branch road of a vacuum interrupter, boosting branch
Road, decompression branch road and one and the transition branch road of the specified branch circuit parallel connection, the transition branch road include being serially connected with the mistake of resistance
Cross vacuum interrupter, it is characterised in that：Also include being used to drive what the vacuum interrupter in three-phase voltage increasing branch road was opened or closed
Boost permanent magnet mechanism (1), the decompression permanent magnet mechanism (2) for driving the vacuum interrupter in three-phase step-down branch road to be opened or closed
And the specified permanent magnet mechanism (3) for driving each vacuum interrupter in the specified branch road of three-phase and transition branch road to be opened or closed；
A pressure regulation is often carried out, each permanent magnet mechanism drives respective vacuum interrupter to carry out following act：Permanent magnet mechanism specified first drives
Dynamic transition vacuum interrupter closes, and then the permanent magnet mechanism corresponding to existing gear drives its vacuum interrupter to disconnect, and then treats
Permanent magnet mechanism corresponding to switching gear drives its vacuum interrupter to close, last specified permanent magnet mechanism driving transition vacuum extinction
Room disconnects.
2. on-load tap-changer of transformer according to claim 1, it is characterised in that：The boosting permanent magnet mechanism passes through liter
Vacuum interrupter in the pressure transmission mechanism driving boosting branch road is acted, and boosting permanent magnet mechanism often acts once, described
Boosting transmission mechanism drives all vacuum interrupters in the boosting branch road of the three-phase to be acted simultaneously；It is depressured permanent magnet mechanism
The vacuum interrupter in the decompression branch road is driven to be acted by being depressured transmission mechanism, decompression permanent magnet mechanism often acts one
Secondary, decompression transmission mechanism drives all vacuum interrupters in the decompression branch road of the three-phase to be acted simultaneously.
3. on-load tap-changer of transformer according to claim 1 or 2, it is characterised in that：The specified permanent magnet mechanism leads to
Crossing specified transmission mechanism drives the vacuum interrupter in the specified branch road of the three-phase and three-phase transition branch road to be acted, it is specified forever
Magnetic mechanism often acts once, and specified transmission mechanism drives the transition vacuum interrupter in three-phase transition branch road by original disconnection shape
State switches to closure state and switches back into off-state again, while drives the vacuum interrupter in the specified branch road of three-phase to be closed by original
Conjunction state switches to off-state or switches to closure state by original off-state.
4. on-load tap-changer of transformer according to claim 3, it is characterised in that：The specified transmission mechanism includes three
It is individual be engaged respectively with the vacuum interrupter in the specified branch road of three-phase the first connector (41), three respectively with three-phase transition branch road
In vacuum interrupter the second connector (42) being engaged and the driving being engaged with first connector, the second connector
Part (31).
5. on-load tap-changer of transformer according to claim 4, it is characterised in that：Second connector (42) includes
The sliding part (421) being slidably matched with actuator (31) and the curved portions (422) coordinated with vacuum interrupter activity.
6. on-load tap-changer of transformer according to claim 4, it is characterised in that：Second connector (42) includes
The connecting portion being connected with actuator (31) and the curved portions (422) coordinated with vacuum interrupter activity.
7. on-load tap-changer of transformer according to claim 4, it is characterised in that：Second connector (42) includes
The connecting portion coordinated with vacuum interrupter and the curved portions (422) coordinated with actuator (31) activity.
8. according to the on-load tap-changer of transformer any one of claim 4-5, it is characterised in that：First connection
Part and the second connector are respectively engaged by an insulator (38) with corresponding vacuum interrupter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974624.8A CN105448548B (en) | 2015-12-21 | 2015-12-21 | On-load tap-changer of transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974624.8A CN105448548B (en) | 2015-12-21 | 2015-12-21 | On-load tap-changer of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN105448548A CN105448548A (en) | 2016-03-30 |
| CN105448548B true CN105448548B (en) | 2018-01-09 |
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| CN112201496A (en) * | 2020-11-16 | 2021-01-08 | 浙江宝威电气有限公司 | Driving device for transformer voltage regulating switch operating mechanism |
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| CN2278288Y (en) * | 1996-06-26 | 1998-04-08 | 国营双城有载分接开关厂 | Dry type vacuum load dividing intermediate voltage-regulating switch |
| CN2268299Y (en) * | 1997-05-06 | 1997-11-19 | 哈尔滨腾远有载分接开关厂 | Dry box-shape vacuum loaded tap-off switching device |
| DE19847745C1 (en) * | 1998-10-16 | 2000-01-05 | Reinhausen Maschf Scheubeck | Tapping switch for interruption-free switchover between different winding tappings of a tapped transformer |
| CN2446643Y (en) * | 2000-09-15 | 2001-09-05 | 张庆祥 | Single coherence type vacuum loaded tap changer |
| DE102004046926B3 (en) * | 2004-09-28 | 2006-01-19 | Maschinenfabrik Reinhausen Gmbh | Device for regulating the electrical voltage |
| CN201181639Y (en) * | 2008-04-28 | 2009-01-14 | 上海华明电力设备制造有限公司 | Direct action type switch |
| CN205428722U (en) * | 2015-12-21 | 2016-08-03 | 浙江宝威电气有限公司 | Transformer on -load voltage regulating switch |
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| CN105448548A (en) | 2016-03-30 |
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