CN206908520U - A kind of on-load voltage regulating switch - Google Patents
A kind of on-load voltage regulating switch Download PDFInfo
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- CN206908520U CN206908520U CN201720648216.8U CN201720648216U CN206908520U CN 206908520 U CN206908520 U CN 206908520U CN 201720648216 U CN201720648216 U CN 201720648216U CN 206908520 U CN206908520 U CN 206908520U
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- switch
- tap
- transition
- switching circuit
- load voltage
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Abstract
The utility model discloses a kind of on-load voltage regulating switch in field transformer, including the third gear switch unit being connected on single phase winding, third gear switch unit includes switch switching circuit and circuit of measurement and control, switch switching circuit includes the main switching circuit in three roads and two-way transition switching circuit, main switching circuit includes the main switching switch that both ends are connected on tapping, and transition switching circuit is connected to the transition switch on tapping including both ends after one transition impedance of series connection：The utility model has split-phase on-load voltage regulation function；Small volume, in light weight, inexpensive, non-maintaining, modularization；By the on-line monitoring to contactor state, failure predication and preventative blocking function can be achieved, it is ensured that switch reliability of operation；By the application of contactor operating passing zero technology, commutating without arcing can be achieved, the service life of switch is greatly prolonged, available in transformer.
Description
Technical field
A kind of transformer is the utility model is related to, more particularly to a kind of tap changer of transformer.
Background technology
Effect of the ULTC in power network, the power supply quality of power distribution network can be improved, it is defeated to obtain stable secondary
Go out voltage, the purpose for saving electric energy can be reached by the secondary output voltage of adjustment control again.On-load voltage regulating switch is on-load voltage regulation
The core component of transformer, it is that one kind can be operated under excitation and load condition, for exchanging winding tap link position
Device.
On-load voltage regulating switch used in conventional electrical distribution transformer controls one or more by the secondary output voltage of measuring transformer
Individual motor drive mechanism, realizes the orderly division of one or more groups of dynamic and static contacts, and then realizes the exchange of winding tap link position.
In the case where transformer does not power off, automatically adjusting for secondary output voltage can be achieved.But because traditional on-load voltage regulating switch touches
Inevitably there is arcing in head, can significantly affect the working life of contact and the insulating properties of transformer oil in disjunction, produce
Product generally need periodic maintenance within cycle rated life time, otherwise it cannot be guaranteed that equipment long-term safety reliably works.It is in addition, traditional
On-load voltage regulating switch is generally three-phase interlock, and each motor drive mechanism controls the multigroup active contact of three-phase, aids in moving contact simultaneously
Action, can not realize the regulation to single-phase voltage.
Application No. CN201510809572.9 patents of invention, disclose a kind of on-load voltage regulating switch, its switch element by
Two relay switch contacts and corresponding contact protection circuit composition：One end of two switch contacts and corresponding transformer around
Group tap connection, is connected after other end parallel connection with power supply, and a switch contact protection branch road is metal-oxide-semiconductor and additional relay contacts
Series circuit, another switch contact protection branch road is diode and additional relay contacts series circuit, they respectively with phase
The switch contact both ends answered are in parallel；Multiple such shunting switch unit i.e. composition Multiple coil tap switch-dividings in parallel.This has load
Tap changer in the positive half cycle of electric current or the one-way conduction of negative half period, realizes two switches by using contact protection bypass diodes
The continuity that main circuit is powered when switching, while ensure not produce short circuit current.But because power electronic devices is in complex electric network
Easily damaged under the influence of overvoltage, and protect the DC characteristic of bypass diodes, can influenceed between the secondary side of transformer one
Electric energy transmits, and causes the on-load voltage regulating switch not to be on the actual application.
Utility model content
The purpose of this utility model is to provide a kind of on-load voltage regulating switch, can be achieved per on-load voltage regulation is mutually individually carried out, really
Protect the reliability service of on-load voltage regulating switch.
What the purpose of this utility model was realized in：A kind of on-load voltage regulating switch, including be connected on single phase winding
Third gear switch unit, third gear switch unit include switch switching circuit and circuit of measurement and control, and the switch switching circuit includes
The main switching circuit in three roads and two-way transition switching circuit, the main switching circuit include the master that both ends are connected on tapping and cut
Switch is changed, the transition switching circuit is connected to the transition switch on tapping including both ends after one transition impedance of series connection.
During utility model works, pass through circuit of measurement and control three main two transition switching circuits of switching circuit of control
Orderly break-make, realize that the band of transformer tap gear carries switching, and by the superposition application of the unit different modes, realize transformation
The on-load voltage regulation function of device.
Compared with prior art, the beneficial effects of the utility model are：The utility model has split-phase on-load voltage regulation work(
Energy；Small volume, in light weight, inexpensive, non-maintaining, modularization；By the on-line monitoring to contactor state, failure can be achieved
Prediction and preventative blocking function, it is ensured that switch reliability of operation；, can be real by the application of contactor operating passing zero technology
Existing commutating without arcing, greatly prolong the service life of switch.The utility model can be used in transformer.
Further limited as of the present utility model, the third gear switch unit is provided with six groups, and each single phase winding is matched somebody with somebody
Two groups of third gear switch units are closed, three groups of windings are provided with each single phase winding, two are correspondingly arranged on adjacent two winding
Tap, form the first tap, the second tap, the 3rd tap and the 4th tap so that a threephase switch unit matching four
Tap.
Further limited as of the present utility model, first tap, the 3rd tap are extracted out from prime coil, and second takes out
Head, the 4th tap are extracted out from rear class coil, are connected between the first tap and the second tap through the first main switching switch, the second tap
It is connected respectively through First Transition switch and the second main switching switch between the 3rd tap, divides between the 3rd tap and the 4th tap
Do not switch through the second transition and be connected with the 3rd main switching switch, it is corresponding on First Transition switch, the second transition switch to be connected with
Transition impedance.
Brief description of the drawings
Fig. 1 is the utility model local circuit schematic diagram.
Fig. 2 is the utility model integrated circuit schematic diagram.
Embodiment
The utility model is described further with reference to specific embodiment.
In specification and claims of the present utility model and above-mentioned accompanying drawing term " first " " second " " prime " " after
Level " etc. is applied to distinguish different objects, rather than for restriction order.
A kind of on-load voltage regulating switch as shown in Figure 1, including the third gear switch unit being connected on single phase winding, third gear are opened
Closing unit includes switch switching circuit and circuit of measurement and control, and circuit of measurement and control is to the switch in controlling switch switching circuit
Action, switch switching circuit include the main switching circuit in three roads and two-way transition switching circuit, and main switching circuit connects including both ends
Main switching switch on tapping, both ends are connected on tapping after transition switching circuit includes one transition impedance of series connection
Transition switch, third gear switch unit is provided with six groups, and each single phase winding coordinates two groups of third gear switch units, each phase line
Three groups of windings are provided with circle, are correspondingly arranged on two taps on adjacent two winding, formed the first tap 1, the second tap 2,
3rd tap 3 and the 4th tap 4 so that four taps of a threephase switch unit matching, the first tap 1, the 3rd tap 3 from
Prime coil is extracted out, and the second tap 2, the 4th tap 4 are extracted out from rear class coil, through first between the first tap 1 and the second tap 2
Main switching switch K1 is connected, and switching the main switchings of K01 and second through First Transition respectively between the second tap 2 and the 3rd tap 3 opens
K2 to be closed to be connected, switching the main switching switch K3 of K02 and the 3rd through the second transition respectively between the 3rd tap 3 and the 4th tap 4 is connected,
It is corresponding on First Transition switch K01, the second transition switch K02 to be connected with transition impedance R.
During utility model works, three switching switches are under the control of control circuit, according to the setting of software program, according to
Secondary division action, realizes the gear switch of tap changer unit；When on-load voltage regulating switch is in 1 grade, switching switch K1 is closed contact
Close, switching switch K01, switching switch K2, switching switch K02, switching switch K2 disconnect, and tap 1 is in tap 2 and connects position
Put, now switch is in 1 file location.
On-load voltage regulating switch is from 1 grade to during 2 grades of switchings, and switching switch K1 contacts are kept closed first, switching switch
K2, switching switch K02, switching switch K3 keep disjunction state, control switching switch K01 closures, tap 1 and tap 0 still in
On-position, switch still in 1 file location；Then switching switch K1 disjunctions, switching switch K2, switching switch K02, switching switch
K3 also keeps disjunction state, and switching switch K01 is kept closed, and tap 1 disconnects with tap 0, and tap 2 passed through with tap 0
Impedance R connections are crossed, switch is in 2 file locations；Then switching switch K1, switching switch K02, switching switch K3 keep disjunction, cut
Change switch K01 to remain closed, control switching switch K2 closures, tap 1 is disconnected with tap 0, and tap 2 is connected with tap 0, at switch
In 2 file locations, finally switching switchs K1, switching switch K02, switches switch K3 holding disjunctions, and control switching switchs K01 disjunctions,
Switching switch K2 is remained closed, and first 1 is disconnected with tap 0, and tap 2 is connected with tap 0, and switch is in 2 file locations, completes 1 grade to 2
The switching of shelves.
Switching switch presses above step, you can realizes 2 grades to 3 grades of switching, similarly, the reverse action of switching switch, will make
Switch completes 3 grades to 2 grades to 1 grade of switching, and to sum up single threephase switch unit can realize third gear regulation operation, coordinate single-phase
Another set threephase switch unit, you can realize five grades of regulation operations；, only need to be in every phase if only needing to realize third gear regulation operation
Remove one group of third gear switch unit on coil, per mutually one group of third gear switch unit of reservation.
The utility model is not limited to above-described embodiment, on the basis of technical scheme disclosed in the utility model, this
The technical staff in field is according to disclosed technology contents, it is not necessary to which performing creative labour can is special to some of which technology
Sign makes some and replaces and deform, and these are replaced and deformed in the scope of protection of the utility model.
Claims (4)
1. a kind of on-load voltage regulating switch, it is characterised in that including the third gear switch unit being connected on single phase winding, third gear switch
Unit includes switch switching circuit and circuit of measurement and control, and the switch switching circuit passes by including the main switching circuit in three roads and two
Switching circuit is crossed, the main switching circuit includes the main switching switch that both ends are connected on tapping, the transition switching electricity
Road is connected to the transition switch on tapping including both ends after one transition impedance of series connection.
2. a kind of on-load voltage regulating switch according to claim 1, it is characterised in that the third gear switch unit is provided with three
Group, each single phase winding match somebody with somebody unification group third gear switch unit, are provided with two groups of windings on each single phase winding, on two windings
Two taps are correspondingly arranged on, form the first tap, the second tap, the 3rd tap and the 4th tap so that a threephase switch
Four taps of unit matching.
3. a kind of on-load voltage regulating switch according to claim 1, it is characterised in that the third gear switch unit is provided with six
Group, each single phase winding coordinate two groups of third gear switch units, three groups of windings, adjacent two winding are provided with each single phase winding
On be correspondingly arranged on two taps, form the first tap, the second tap, the 3rd tap and the 4th tap so that a three-phase
Switch element coordinates four taps.
4. a kind of on-load voltage regulating switch according to Claims 2 or 3, it is characterised in that first tap, the 3rd tap
Extracted out from prime coil, the second tap, the 4th tap are extracted out from rear class coil, through the first master between the first tap and the second tap
Switching switch is connected, and is connected respectively through First Transition switch and the second main switching switch between the second tap and the 3rd tap, the
It is connected respectively through the second transition switch and the 3rd main switching switch between three taps and the 4th tap, First Transition switch, second
It is corresponding on transition switch to be connected with transition impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720648216.8U CN206908520U (en) | 2017-06-06 | 2017-06-06 | A kind of on-load voltage regulating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720648216.8U CN206908520U (en) | 2017-06-06 | 2017-06-06 | A kind of on-load voltage regulating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206908520U true CN206908520U (en) | 2018-01-19 |
Family
ID=61287123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720648216.8U Active CN206908520U (en) | 2017-06-06 | 2017-06-06 | A kind of on-load voltage regulating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206908520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518845A (en) * | 2019-07-30 | 2019-11-29 | 广州供电局有限公司 | On-load tap-changer of transformer |
-
2017
- 2017-06-06 CN CN201720648216.8U patent/CN206908520U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518845A (en) * | 2019-07-30 | 2019-11-29 | 广州供电局有限公司 | On-load tap-changer of transformer |
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