CN105321744B - The loaded capacity-regulated switch of transformer - Google Patents
The loaded capacity-regulated switch of transformer Download PDFInfo
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- CN105321744B CN105321744B CN201510705887.9A CN201510705887A CN105321744B CN 105321744 B CN105321744 B CN 105321744B CN 201510705887 A CN201510705887 A CN 201510705887A CN 105321744 B CN105321744 B CN 105321744B
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- vacuum interrupter
- low
- vacuum
- low pressure
- switching system
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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
- H01H9/0027—Operating mechanisms
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- 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
-
- 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
Abstract
The invention discloses a kind of loaded capacity-regulated switches of transformer, including high-tension coil switching system, low-voltage coil switching system, at least a permanent magnet mechanism and the transmission mechanism matched with the permanent magnet mechanism, the high-tension coil switching system includes at least three vacuum interrupters, the low-voltage coil switching system includes at least four vacuum interrupters, the permanent magnet mechanism back and forth drives each vacuum interrupter to carry out separating brake and feed motion by the transmission mechanism, and then the coil of switching transformer achievees the purpose that adjust transformer capacity.The organization plan of low-voltage coil switching system and high-tension coil switching system that the present invention is made of permanent magnet mechanism driving vacuum interrupter, efficiently solves the problems, such as the arc extinguishing of high and low pressure side, structure is simple, high reliablity, the movement deadline is short, and the service life is long, maintenance-free.
Description
Technical field
The invention belongs to have load to adjust in power industry technical field of transformer equipment more particularly to a kind of for transformer
Hold switch.
Background technique
Loaded capacity-regulated transformer is a kind of transformer with two kinds of rated capacities of size.According to payload, using special
The connection type of capacitance switch switching transformer winding under the case where not cutting off the power of door then realizes transformer two
Switching between kind different capabilities.There are mainly two types of the acquisition patterns of capacitance-adjustable transformer size and capacity: one is high-pressure sides to pass through
D/Y conversion, low-pressure side are realized by the serioparallel exchange of coil；Another kind is that high-pressure side and low-pressure side all pass through the string of coil and turn
Bring realization.
The capacitance switch of the prior art has the following problems: the high pressure and low-voltage contact of capacitance switch are using grease chamber knot altogether
Structure.In capacity transfer conversion process, high-voltage contact and low-voltage contact generate electric arc, this causes contact impaired, and electrical endurance only has 3
To 50,000 times.It was calculated by transformer life 20 years, can only switch 4 to 6 times daily, can not meet actual demand；Electric arc makes oil
It easily deteriorates, every operation 2000 times (about years) will have a power failure maintenance of changing oil, this causes capacitance-adjustable transformer to push away
By arrive very big resistance.
The capacitance switch of the prior art gives spring energy agency energy storage using motor rotation, then crosses dead point and discharges suddenly
Mode drive high-voltage contact and low-voltage contact to switch over.This driving mechanism structure is complicated, and part is more, high failure rate, can
It is low by property.It can only anti-factory's maintenance after capacitance switch is bad；The switching time of this driving mechanism is long (about 35ms), the operation of generation
The duration of voltage and the duration of voltage waveform distortion are also correspondingly grown.
The capacitance switch of the prior art is of limited application.The current-carrying capability of its low-voltage contact limits the promotion of capacity,
The matched transformer maximum capacity of capacitance switch energy is 630kVA.It can be only applied on oil-immersed transformer.
To solve the above problems, Chinese patent CN102254713 discloses a kind of loaded capacity-regulated switch of single hop mouth, packet
Include main contact line and transition contact line, have on the transition contact line transition resistance and with the second vacuum interrupter string
Connection, the main contact line have two, and one is the corner connection main contact line with the first vacuum interrupter, and one article is with the
The star of three vacuum interrupters connects main contact line, and the disconnection of all vacuum interrupters and closure are turned by motor band moving cam
It moves to realize；
Although this capacitance switch solves the problems, such as reliable breath arc of the high-pressure side contact in the handoff procedure of star angle, but its
Low-pressure side can also generate arcing during serioparallel exchange, and user still needs to inspect periodically and replace transformer oil；Driving dress
Setting is still using motor spring energy agency, and part is more, and structure is complicated, high failure rate, and maintenance is also difficult.
Summary of the invention
In view of the above-mentioned problems, the present invention provides, a kind of high reliablity, structure is simple, the service life is long, it is non-maintaining, have a wide range of application
Loaded capacity-regulated switch.
To achieve the goals above, the invention adopts the following technical scheme: a kind of loaded capacity-regulated switch of transformer, including
High-tension coil switching system, low-voltage coil switching system, at least a set of permanent magnet mechanism and the transmission matched with the permanent magnet mechanism
Mechanism, the high-tension coil switching system include at least three vacuum interrupters, and the low-voltage coil switching system includes at least
Four vacuum interrupters, the permanent magnet mechanism by the transmission mechanism back and forth drive each vacuum interrupter carry out separating brake with
Feed motion, and then the coil of switching transformer achievees the purpose that adjust transformer capacity.The present invention uses permanent magnet mechanism as drive
Motivation structure replaces the motor spring energy agency that uses of the prior art, and structure is simple, high reliablity, switching rapidly (20ms with
It is interior)；High-tension coil switching system and low-voltage coil switching system are formed with vacuum interrupter, efficiently solves high-pressure side and low
The arc extinguishing problem for pressing side, the every operation of capacitance switch for eliminating the prior art, which will have a power failure to change oil for 2000 times, to be safeguarded not
Just, realize non-maintaining in the lifetime of transformer, and the capacitance switch service life is long (electrical endurance 100,000 times), answers range in fact
Extensively (transformer capacity can arrive 2500kVA, and dry type and oil-immersed transformer can be applied), it is whole more safe and reliable.
Preferably, the transmission mechanism includes actuator and multiple connectors for being flexibly connected with the actuator, described more
A connector other end is connected with corresponding vacuum interrupter respectively.As an improvement, the actuator can directly with the permanent magnetism
Mechanism is connected, and permanent magnet mechanism drives the movement of each connector by actuator, and each connector goes out with corresponding vacuum respectively
Arc chamber is connected, and each vacuum interrupter is then made to realize self contained function, and the every movement of permanent magnet mechanism is primary, each vacuum interrupter difference
Corresponding separating brake or feed motion are carried out, realizes and carries out capacity transfer in the case where not powering off.
Further, the multiple connector is connected by an insulator 38 with corresponding vacuum interrupter respectively.Benefit
Use insulator as the insulating part between vacuum interrupter and transmission mechanism, it is install convenient, safe and reliable.
Preferably, the vacuum interrupter is the vacuum tube with dynamic and static contact, high reliablity guarantees effectively to carry out
Arc extinguishing.
Further, the low-voltage coil switching system includes the first parallel connection vacuum arc extinguishing chamber of low pressure, the second parallel connection of low pressure
Vacuum interrupter, low voltage series vacuum interrupter and the low pressure transition vacuum interrupter for being in series with transition resistance；When low pressure first
Parallel connection vacuum arc extinguishing chamber, the second parallel connection vacuum arc extinguishing chamber of low pressure make low-voltage coil that parallel-connection structure be presented, when low pressure string when closing a floodgate
Join vacuum interrupter when closing a floodgate, makes low-voltage coil that cascaded structure be presented；By the way that four vacuum interrupters are arranged, to low pressure winding
Coil carry out serioparallel exchange to achieve the purpose that switching capacity, it is continuous in series-parallel conversion that low pressure winding has been effectively ensured
Electricity, concatenated transition resistance play the role of limiting coil loop stream.
Further, when the low-voltage coil is in parallel-connection structure, driving mechanism drives low pressure first by transmission mechanism
Parallel connection vacuum arc extinguishing chamber, the second parallel connection vacuum arc extinguishing chamber of low pressure close a floodgate, and drive low voltage series vacuum interrupter and low pressure transition true
Empty arc-chutes separating brake；During the low-voltage coil is converted to cascaded structure by parallel-connection structure, permanent magnet mechanism drives driver
Structure movement, and transmission mechanism guarantees that each vacuum interrupter is acted by following timing:
Low pressure transition vacuum interrupter is first connected；
The first parallel connection vacuum arc extinguishing chamber of low pressure, low pressure the second parallel connection vacuum arc extinguishing chamber separating brake；
Low voltage series vacuum interrupter closes a floodgate；
Low pressure transition vacuum extinction separating brake completes conversion；Conversely, when needing low-voltage coil to be converted to parallel connection by cascaded structure
When structure, step is opposite.
When normal, low pressure transition vacuum interrupter is separating brake, is only converted to and is coupled by cascaded structure in low-voltage coil
Structure or otherwise during, which all first connects, guarantee serioparallel exchange when do not power off, convert
The low pressure transition vacuum interrupter disconnects again afterwards.
Further, the high-tension coil switching system includes that corner connection vacuum interrupter, star connect vacuum interrupter and series connection
There is the high pressure transition vacuum interrupter of transition resistance；The corner connection vacuum interrupter has a generally triangular shape high-tension coil when closing a floodgate
Connection, star connects vacuum interrupter makes high-tension coil that Astrocytic conditioned medium be presented when closing a floodgate.The setting of three vacuum interrupters guarantees high
Press winding when carrying out star angle and converting can effective arc extinguishing, and realize conversion process and do not power off；Concatenated high pressure transition resistance rises
To the effect of limitation coil loop stream.
Further, when the high-tension coil is in angle connecting structure, driving mechanism drives the corner connection by transmission mechanism
Vacuum interrupter closes a floodgate, and driving star connects vacuum interrupter and high pressure transition vacuum interrupter separating brake；The high-tension coil is by corner connection
Be converted to permanent magnet mechanism drive transmission device movement during star connects, and transmission mechanism guarantee each vacuum interrupter press with
Lower timing movement:
High pressure transition vacuum interrupter is first connected；
Corner connection vacuum interrupter separating brake；
Star connects vacuum interrupter combined floodgate；
High pressure transition vacuum extinction separating brake completes conversion；Conversely, when needing high-tension coil to be switched through by star to be changed to corner connection,
Step is opposite.
When normal, the high pressure transition vacuum interrupter is separating brake, only high-tension coil switched through by star be changed to corner connection or
During person is on the contrary, which is all first connected, and guarantees not power off when the conversion of star angle, should after converting
High pressure transition vacuum interrupter disconnects again.
Or it is further, the high-tension coil switching system include the first parallel connection vacuum arc extinguishing chamber of high pressure, high pressure second simultaneously
Join vacuum interrupter, high-pressure series vacuum interrupter and the high pressure transition vacuum interrupter for being in series with transition resistance；The high pressure
When closing a floodgate, parallel-connection structure, institute is presented in the high-tension coil for first parallel connection vacuum arc extinguishing chamber, the second parallel connection vacuum arc extinguishing chamber of high pressure
High-pressure series vacuum interrupter is stated when closing a floodgate, cascaded structure is presented in the high-tension coil；When normal, high pressure transition vacuum extinction
Room is all separating brake, only high-tension coil by cascaded structure be converted to parallel-connection structure or otherwise during, the vacuum extinction
Room is all first connected, and guarantees not power off when serioparallel exchange, the vacuum interrupter disconnects again after converting, and high pressure transition resistance plays
Limit the effect of coil loop stream.Also mode switching capacity and the low pressure winding side of coil series-parallel conversion are used in high-voltage winding side
Series-parallel conversion capacity matches, and arbitrary proportion of the variable compression ratio of capacitance-adjustable transformer between 0.1 ~ 0.9 may be implemented, make capacity transfer
Transformer is more flexible to be suitable for the case where various peak valleys load, and can save more multiple-energy-source.
Further, when the high-tension coil is in parallel-connection structure, driving mechanism drives high pressure first by transmission mechanism
Parallel connection vacuum arc extinguishing chamber, the second parallel connection vacuum arc extinguishing chamber of high pressure close a floodgate, and drive high-pressure series vacuum interrupter and high pressure transition true
Empty arc-chutes separating brake；During high-tension coil is converted to cascaded structure by parallel-connection structure, permanent magnet mechanism drive transmission device
Movement, and transmission mechanism guarantees that each vacuum interrupter is acted by following timing:
High pressure transition vacuum interrupter is first connected；
The first parallel connection vacuum arc extinguishing chamber of high pressure, high pressure the second parallel connection vacuum arc extinguishing chamber separating brake；
High-pressure series vacuum interrupter closes a floodgate；
High pressure transition vacuum extinction separating brake completes conversion, is at this time cascaded structure；Conversely, when needing high-tension coil by going here and there
When connection structure is converted to parallel-connection structure, step is opposite.
Further, the acquisition of capacitance-adjustable transformer size and capacity, either using high pressure lateral coil D/Y conversion plus low-pressure side
The serioparallel exchange of coil is realized, or is all realized by the serioparallel exchange of coil using high-pressure side and low-pressure side, the high pressure
The corresponding conversion movement that coil switching system and low-voltage coil switching system are carried out is the same period, and asynchrony is less than 0.2ms.
In conclusion the beneficial effects of the present invention are: forming high-tension coil switching system and low-voltage line with vacuum interrupter
Switching system is enclosed, efficiently solves the problems, such as the arc extinguishing of high-pressure side and low-pressure side, non-maintaining, the service life is long；Use permanent magnet mechanism as
Driving mechanism, structure is simple, high reliablity, and switching action is completed rapidly, by the duration for the switching overvoltage that switching generates
Also correspondingly shorten with the duration of voltage waveform distortion.
Detailed description of the invention
Fig. 1 is the circuit diagram of present invention low-pressure side winding in transformer large capacity.
Fig. 2 is the circuit diagram of present invention low-pressure side winding in transformer low capacity.
Fig. 3 is low-side arrangement schematic diagram of the present invention.
Fig. 4 is high-pressure side structural schematic diagram of the present invention.
Fig. 5 is that high-tension coil of the present invention is converted using star angle, and transformer is each true into low capacity handoff procedure by large capacity
The course of work of empty arc-chutes.
Fig. 6 is the circuit diagram of present invention high-pressure side winding in transformer large capacity.
Fig. 7 is the circuit diagram of present invention high-pressure side winding in transformer low capacity.
Fig. 8 is that high-tension coil of the present invention uses serioparallel exchange, and transformer is each true into low capacity handoff procedure by large capacity
The course of work of empty arc-chutes.
Wherein, K indicates that vacuum interrupter, symbol " day " indicate that vacuum interrupter is in "on" position, and symbol " mesh " indicates
Vacuum interrupter is in gate-dividing state；R represents transition resistance；T indicates the time.
Specific embodiment
In order to make those skilled in the art better understand the present invention program, below in conjunction in the embodiment of the present invention
Attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.
A kind of loaded capacity-regulated switch of transformer, including high-tension coil switching system, low-voltage coil switching system, permanent magnet mechanism
1 and the transmission mechanism that is matched with the permanent magnet mechanism.Specifically, by taking a phase as an example, the high-tension coil switching system of every phase includes
The low-voltage coil switching system of three vacuum interrupters, every phase includes four vacuum interrupters, and the vacuum interrupter is
Vacuum tube with dynamic and static contact, its reliability is high, can guarantee and effectively carries out arc extinguishing；The permanent magnet mechanism passes through the transmission
Mechanism driving each vacuum interrupter carries out separating brake and closes a floodgate, and then the connection of switching coil.
Firstly, illustrating low-voltage coil switching system, by taking a phase as an example, the low-voltage coil switching system of every phase includes four true
Empty arc-chutes, as shown in figure 3, four vacuum interrupters are the first parallel connection vacuum arc extinguishing chamber of low pressure 52, the second parallel connection of low pressure
Vacuum interrupter 53, low voltage series vacuum interrupter 51 and the low pressure transition vacuum interrupter 54 for being in series with transition resistance；When low
It presses the first parallel connection vacuum arc extinguishing chamber, the second parallel connection vacuum arc extinguishing chamber of low pressure when closing a floodgate, makes low-voltage coil that parallel-connection structure be presented, when
Low voltage series vacuum interrupter makes low-voltage coil that cascaded structure be presented when closing a floodgate.By the way that four vacuum interrupters are arranged, effectively
It ensure that effective arc extinguishing of the low pressure winding in series-parallel conversion；
When the low-voltage coil is in parallel-connection structure, driving mechanism drives the first parallel connection vacuum of low pressure to go out by transmission mechanism
Arc chamber, the second parallel connection vacuum arc extinguishing chamber of low pressure close a floodgate, and drive low voltage series vacuum interrupter and low pressure transition vacuum interrupter point
Lock；During the low-voltage coil is converted to cascaded structure by parallel-connection structure, the movement of permanent magnet mechanism drive transmission device, and pass
Motivation structure guarantees that each vacuum interrupter is acted by following timing:
Low pressure transition vacuum interrupter is first connected；
The first parallel connection vacuum arc extinguishing chamber of low pressure, low pressure the second parallel connection vacuum arc extinguishing chamber separating brake；
Low voltage series vacuum interrupter closes a floodgate；
Low pressure transition vacuum extinction separating brake completes conversion.
Specifically, as shown in Figure 1, 2, Fig. 1 is that (K5, K6's coils from parallel connection of coils structure close a floodgate；K7, K8 separating brake), i.e., at transformer
In large capacity state；Fig. 2 is that (K8's coil cascaded structure closes a floodgate；K5, K6, K7 separating brake), i.e., transformer is in low capacity state；Its
Middle K5, K6 are low pressure parallel connection vacuum arc extinguishing chamber, and K8 is low voltage series vacuum interrupter, and K7 is low pressure transition vacuum interrupter,
It is in series with transition resistance R.Coil from parallel connection into cascaded structure conversion process, permanent magnet mechanism drive transmission device, and being driven
The special construction of mechanism guarantees that each vacuum interrupter acts in the following order:
K7 combined floodgate → K5, K6 separating brake → K8 combined floodgate → K7 separating brake completes conversion, is at this time coil cascaded structure；Conversely, working as
When low-voltage coil being needed to be converted to parallel-connection structure by cascaded structure, step is opposite.
As shown in Figure 4,5, for using the high-tension coil switching system of star angle conversion；By taking three-phase as an example, the high-voltage line of every phase
Enclosing switching system includes three vacuum interrupters, and specially corner connection vacuum interrupter 61, star connects vacuum interrupter 63 and be in series with
The high pressure transition vacuum interrupter 64 of transition resistance；The corner connection vacuum interrupter has a generally triangular shape high-tension coil when closing a floodgate
Connection, star connects vacuum interrupter makes high-tension coil that Astrocytic conditioned medium be presented when closing a floodgate.
When the high-tension coil is in angle connecting structure, driving mechanism drives the corner connection vacuum interrupter by transmission mechanism
It closes a floodgate, driving star connects vacuum interrupter and high pressure transition vacuum interrupter separating brake；The high-tension coil is converted to star by corner connection and connects
During, the movement of permanent magnet mechanism drive transmission device, and transmission mechanism guarantees that each vacuum interrupter is acted by following timing:
High pressure transition vacuum interrupter is first connected；
Corner connection vacuum interrupter separating brake；
Star connects vacuum interrupter combined floodgate；
High pressure transition vacuum extinction separating brake completes conversion.
Specifically, as illustrated in figs. 5-7, Fig. 6 is that (K4's angle connecting structure schematic diagram closes a floodgate；K1, K3 separating brake), i.e., transformer is in
Large capacity state；Fig. 7 is that star connects structural schematic diagram (K1 combined floodgate；K3, K4 separating brake), i.e., transformer is in low capacity state；Wherein
K1 is that star connects vacuum interrupter, and K4 is corner connection vacuum interrupter, and K3 is high pressure transition vacuum interrupter, is in series with transition resistance R.
During high-tension coil connects conversion to star from corner connection, permanent magnet mechanism drive transmission device, and the special construction of transmission mechanism is protected
Each vacuum interrupter is demonstrate,proved to act in the following order:
K3 combined floodgate → K4 separating brake → K1 combined floodgate → K3 separating brake is completed conversion, is connect at this time for star.Conversely, when needing high-voltage line
Circle is switched through by star when being changed to corner connection, and step is opposite.
Obviously, in other implementations, high-voltage winding can also realize the switching of size and capacity using serioparallel exchange, this
When, for serioparallel exchange structure as low-voltage coil switching system, the high-tension coil switching system includes four vacuum extinctions
Room, only four vacuum interrupters are high pressures.The course of work of each vacuum interrupter is as shown in figure 8, specifically connect
The low-pressure side winding of mode and action process reference strings and transformational structure is connect, details are not described herein again.
Further, the transmission mechanism includes actuator and multiple connectors for being flexibly connected with the actuator, described
Multiple connector other ends are connected with corresponding vacuum interrupter respectively.Specifically, in this present embodiment, the actuator is two
The root body of rod, a body of rod 31 are located at low-voltage coil switching system side, and another body of rod 32 is located at high-pressure system side, permanent magnetic motor
Structure drives two bodies of rod to move synchronously by link mechanism 33；Obviously, in other embodiments, the permanent magnet mechanism can be direct
It is connected with two bodies of rod；Each connector is connected with corresponding vacuum interrupter respectively, realizes each vacuum interrupter only
Vertical movement, the every movement of permanent magnet mechanism is primary, and each vacuum interrupter carries out corresponding separating brake and feed motion respectively, realizes constantly
Capacity transfer is carried out in the case where electricity.In other embodiments, the transmission mechanism is also possible to cam structure formula, including with more
The slide bar of a bulge-structure and the sliding slot for supporting the slide bar, one end of each insulator are contacted with each bulge-structure of slide bar, separately
One end is connected with the moving contact of each vacuum interrupter.The every movement of permanent magnet mechanism is primary, and slide bar bulge-structure just drives each vacuum
Arc-chutes carry out corresponding separating brake and feed motion respectively.
Specifically, multiple connectors are divided into three types structure, it is respectively as follows: and the vacuum interrupter 51, angle of connecting
The compatible connector 331 of vacuum interrupter 61 is connect, with low pressure transition vacuum interrupter 54,64 phase of high pressure transition vacuum interrupter
The connector 332 of adaptation connects vacuum with the first parallel connection vacuum arc extinguishing chamber of low pressure 52, the second parallel connection vacuum arc extinguishing chamber of low pressure 53 and star
The structure setting of the compatible connector 333 of arc-chutes 63, three kinds of connectors can be diversification, as long as guaranteeing to work as permanent magnet mechanism
In the case that movement is primary, four vacuum interrupters of low-pressure side and on high-tension side three vacuum interrupters will be realized such as Fig. 5 institute
The separating brake and making process shown.
From Fig. 6 to Fig. 7, the separating brake and making process of each vacuum interrupter in high-pressure side are as shown in figure 5, when permanent magnet mechanism acts
Once, the actuation time of each vacuum interrupter is divided into T1, T2, T3, T4, and as T1, i.e., transformer is in initial under large capacity
State, at this point, K4 is in closed state, K1, K3 are in an off state, and high-pressure side is around being grouped into triangle；As T2, K3, K4
In closed state, K1 is in an off state, at this point, transition circuit is connected；As T3, K3 is in closed state, at K1, K4
In off-state, at this point, only only turning on transition circuit；When T4, K1 is in closed state, and K3, K4 are in an off state, at this point,
Three-Phase Transformer high-voltage winding completes the conversion connect from corner connection to star at star-like connection.
While high-pressure side completes the conversion of angle star, low-pressure side also carries out being parallel to concatenated conversion, specifically, such as
It Fig. 1, is the circuit diagram of a low-pressure side wherein phase shown in 2, schematic diagram when Fig. 1 is large capacity, when Fig. 2 is low capacity
Schematic diagram.The opening and closing process of each vacuum interrupter in figure mesolow side as shown in figure 5, when permanent magnet mechanism movement is primary, go out by each vacuum
The actuation time of arc chamber is divided into T1, T2, T3, T4, and as T1, i.e., transformer is in the original state under large capacity, and K5, K6 are in
Closed state, K7, K8 are in an off state, and are connected after two sections of coils from parallel connection of coils of low-pressure side winding in third section coil；As T2,
K5, K6, K7 are in closed state, and K8 is in an off state, at this point, transition circuit is switched on；As T3, K7, K8 are in closure
State, K5, K6 are in an off state, and only only turn on transition circuit；As T4, K8 is in closed state, and K5, K6, K7 are in disconnected
Open state is completed from being parallel to concatenated conversion at this point, three sections of coils of low-pressure side winding are connected.
The present invention is by being independently arranged vacuum interrupter, arc extinguishing for each contact connection in high-low pressure contact system
Performance is good, and the service life is long, non-maintaining, and reliability increases, and realizes and completes capacity transfer in case of constant power；It is done using permanent magnet mechanism
For the driving force of each vacuum interrupter mechanical action, compared to motor spring system, the configuration of the present invention is simple is run more steady
Fixed, more reliable, the switching motion deadline is short, hence it is evident that the phenomenon that eliminating high failure rate.
Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment should fall within the scope of the present invention.
Claims (2)
1. a kind of loaded capacity-regulated switch of transformer, including high-tension coil switching system, low-voltage coil switching system, at least it is a set of forever
Transmission mechanism magnetic mechanism (1) and matched with the permanent magnet mechanism, it is characterised in that: the high-tension coil switching system includes extremely
Few three vacuum interrupters, the low-voltage coil switching system include at least four vacuum interrupters, and the permanent magnet mechanism passes through
The transmission mechanism back and forth drives each vacuum interrupter to carry out separating brake and feed motion, and then the coil of switching transformer reaches
To the purpose for adjusting transformer capacity；
The low-voltage coil switching system includes the first parallel connection vacuum arc extinguishing chamber of low pressure, the second parallel connection vacuum arc extinguishing chamber of low pressure, low
Pressure series connection vacuum interrupter and the low pressure transition vacuum interrupter for being in series with transition resistance；When the first parallel connection vacuum arc extinguishing of low pressure
Room, the second parallel connection vacuum arc extinguishing chamber of low pressure make low-voltage coil that parallel-connection structure be presented, when low voltage series vacuum interrupter when closing a floodgate
When closing a floodgate, make low-voltage coil that cascaded structure be presented；
The high-tension coil switching system includes that corner connection vacuum interrupter, star connect vacuum interrupter and be in series with the height of transition resistance
It presses through and crosses vacuum interrupter；The corner connection vacuum interrupter makes high-tension coil have a generally triangular shape connection when closing a floodgate, and star connects vacuum
Arc-chutes make high-tension coil that Astrocytic conditioned medium be presented when closing a floodgate；
When the high-tension coil is in angle connecting structure, driving mechanism drives the corner connection vacuum interrupter to close by transmission mechanism
Lock, driving star connect vacuum interrupter and high pressure transition vacuum interrupter separating brake；The high-tension coil is converted to what star connect by corner connection
In the process, permanent magnet mechanism drive transmission device acts, and transmission mechanism guarantees that each vacuum interrupter is acted by following timing:
High pressure transition vacuum interrupter is first connected；
Corner connection vacuum interrupter separating brake；
Star connects vacuum interrupter combined floodgate；
High pressure transition vacuum extinction separating brake completes conversion；
The transmission mechanism includes actuator (31) and multiple connectors for being flexibly connected with the actuator, the multiple connector
The other end passes through an insulator (38) respectively and is connected with corresponding vacuum interrupter；
When the low-voltage coil is in parallel-connection structure, driving mechanism drives the first parallel connection vacuum arc extinguishing of low pressure by transmission mechanism
Room, the second parallel connection vacuum arc extinguishing chamber of low pressure close a floodgate, and drive low voltage series vacuum interrupter and low pressure transition vacuum interrupter separating brake；
During the low-voltage coil is converted to cascaded structure by parallel-connection structure, the movement of permanent magnet mechanism drive transmission device, and be driven
Mechanism guarantees that each vacuum interrupter is acted by following timing:
Low pressure transition vacuum interrupter is first connected；
The first parallel connection vacuum arc extinguishing chamber of low pressure, low pressure the second parallel connection vacuum arc extinguishing chamber separating brake；
Low voltage series vacuum interrupter closes a floodgate；
Low pressure transition vacuum extinction separating brake completes conversion.
2. the loaded capacity-regulated switch of transformer according to claim 1, it is characterised in that: the vacuum interrupter be with
The vacuum tube of dynamic and static contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705887.9A CN105321744B (en) | 2015-10-26 | 2015-10-26 | The loaded capacity-regulated switch of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705887.9A CN105321744B (en) | 2015-10-26 | 2015-10-26 | The loaded capacity-regulated switch of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105321744A CN105321744A (en) | 2016-02-10 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632729A (en) * | 2016-03-04 | 2016-06-01 | 浙江宝威电气有限公司 | Rapid arc-extinguishing on-load capacitance regulation switch of transformer |
| CN105788902B (en) * | 2016-04-20 | 2018-07-13 | 浙江宝威电气有限公司 | A kind of capacitance switch of lighning proof type capacitance-adjustable transformer |
| CN109637793B (en) * | 2016-04-20 | 2020-04-10 | 浙江宝威电气有限公司 | Capacity-adjusting transformer with lightning protection function |
| CN107195445B (en) * | 2016-04-20 | 2019-04-12 | 浙江宝威电气有限公司 | A kind of lighning proof type loaded capacity-regulated transformer and loaded capacity-regulated switch |
| CN105826060B (en) * | 2016-04-20 | 2020-08-28 | 浙江宝威电气有限公司 | Anti unbalanced three-phase's accent holds transformer |
| CN105826098B (en) * | 2016-04-20 | 2018-08-14 | 浙江宝威电气有限公司 | The capacitance switch of capacitance-adjustable transformer for anti-three-phase imbalance |
| CN105810501B (en) * | 2016-05-10 | 2018-09-11 | 浙江纪元电气科技股份有限公司 | Switch that is a kind of while realizing conjunction more than more points |
| CN105826124B (en) * | 2016-05-10 | 2018-09-11 | 浙江纪元变压器有限公司 | A kind of vacuum pressure regulating and capacitance regulating tap switch |
| CN108565146A (en) * | 2018-06-21 | 2018-09-21 | 句容华源电器设备有限公司 | Transformer capacity and pressure regulating switching mechanism |
| CN110085459A (en) * | 2018-12-12 | 2019-08-02 | 浙江腾龙电器有限公司 | A kind of novel loaded capacity-regulated tap switch |
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| CN205140791U (en) * | 2015-10-26 | 2016-04-06 | 浙江宝威电气有限公司 | Transformer has to carry transfers appearance switch |
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| CN102254713A (en) * | 2011-08-08 | 2011-11-23 | 辽宁金立电力电器有限公司 | On-load capacity-regulating switch with single fracture |
| CN204189594U (en) * | 2014-10-20 | 2015-03-04 | 合肥景喜电气设备有限公司 | A kind of dry type loaded capacity-regulated transformer and capacity and pressure regulating transformer |
| CN104952603A (en) * | 2015-06-03 | 2015-09-30 | 浙江纪元高压电器开关有限公司 | Voltage-regulating capacitance-regulating tap switch adopting vacuum arc-extinguishing chambers |
| CN205140791U (en) * | 2015-10-26 | 2016-04-06 | 浙江宝威电气有限公司 | Transformer has to carry transfers appearance switch |
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