CN105225814B - A kind of on-load tap-changer of transformer - Google Patents
A kind of on-load tap-changer of transformer Download PDFInfo
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- CN105225814B CN105225814B CN201510762097.4A CN201510762097A CN105225814B CN 105225814 B CN105225814 B CN 105225814B CN 201510762097 A CN201510762097 A CN 201510762097A CN 105225814 B CN105225814 B CN 105225814B
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Abstract
The present invention relates to a kind of on-load tap-changer of transformer, including switching on-off circuit, described switching on-off circuit includes symmetrical odd number tap-change operation circuit and even numbers tap-change operation circuit, the tap-change operation circuit includes working contact, the double-contact synchronization transition contact being made up of main contact and secondary contact and the moving contact that can be contacted with working contact, double-contact synchronization transition contact, the present invention is simple in construction, it is cheap, reliability is high, can be achieved switching it is whole without electric arc work and can bifurcation work, have a wide range of applications and promotional value.
Description
Technical field
The present invention relates to a kind of transformer regulation, and in particular to a kind of on-load tap-changer of transformer.
Background technology
At present, drive the on-load voltage regulating switch of Load Regulation voltage most using through quick current limliting electricity in power transformer
The form of transition oil blast is hindered, because big to oily pollution using oil blast, maintenance workload is big, thus reliability is affected.
Contact burning is easily caused, often to be updated, and needs often filtering transformer oil.At present to overcome above mentioned problem, occur
With the loaded switch of vacuum extinction, but reliability is not high, often causes switch to explode because vacuum bubbles fail, and jeopardizes transformer peace
Entirely, relevant information uses controllable silicon, and on-load voltage regulation is carried out using permutation and combination method, but technology is more complicated, once controllable silicon event
Barrier, transformer will be unable to normal operation.
The content of the invention
In view of the above-mentioned problems, the present invention provide it is a kind of switch it is whole without electric arc and can bifurcation work transformer on-load voltage regulating
Switch.
To solve the above problems, the technical scheme that the present invention takes is：A kind of on-load tap-changer of transformer, including switching
On-off circuit, described switching on-off circuit include symmetrical odd number tap-change operation circuit and even numbers tap-change operation electricity
Road, the tap-change operation circuit include working contact, the double-contact synchronization transition contact being made up of main contact and secondary contact with
And the moving contact that can be contacted with working contact, double-contact synchronization transition contact, described tap-change operation circuit are included by tapping
The working contact control circuit and main contact control circuit and the secondary contact control circuit for being connected to main contact that head is drawn；Described
Working contact control circuit is that working contact is connected to the input that main contact triggers transmitter, and main contact triggers the output of transmitter
It is connected to main contact control circuit；Described main contact control circuit is that secondary contact triggers connect branch of the transmitter with transition resistance
Road is parallel to the series arm both ends of over-current protection device and main contact high-pressure thyristor；Described secondary contact control circuit is one
The main contact of tap-change operation circuit is connected to the secondary contact of other tap-change operation circuit through secondary contact high-pressure thyristor；Institute
The main contact triggering transmitter stated provides trigger current for the main contact high-pressure thyristor in same tap-change operation circuit, described
Secondary contact triggering transmitter to be that the secondary contact high-pressure thyristor that is connected with the secondary contact of same tap-change operation circuit provides tactile
Generate electricity stream.
Preferably, described over-current protection device is the quick resistance of stream.
Preferably, described over-current protection device is fuse.
Of the invention simple in construction, cheap, reliability is high, and achievable switching whole process works without electric arc and can bifurcation work
Make, have a wide range of applications and promotional value.
Brief description of the drawings
Fig. 1 is that the moving contact A of embodiment 1 contacts schematic diagram with working contact K1；
Fig. 2 contacts for the moving contact A of embodiment 1 with working contact K1, double-contact synchronization transition contact k1, k1 ' contact signal
Figure；
Fig. 3 is the moving contact A of embodiment 1 and double-contact synchronization transition contact k1, k1 ' contact schematic diagram；
Fig. 4 be the moving contact A of embodiment 1 transition contact k1, k1 ' synchronous with double-contact, double-contact synchronization transition contact k2,
K2 ' contacts schematic diagram；
Fig. 5 is the moving contact A of embodiment 1 and double-contact synchronization transition contact k2, k2 ' contact schematic diagram；
Fig. 6 is the moving contact A of embodiment 1 and working contact K2, double-contact synchronization transition contact k2, k2 ' contact schematic diagram；Figure
7 be that moving contact A shown in embodiment 1 contacts schematic diagram with working contact K2；
Wherein, A is moving contact, and K1, K2 are working contact, k1, k1 ' and k2, k2 ' it is synchronous double-contact transition contact, its
Middle k1, k2 are main contact；K1 ', k2 ' are secondary contact, and R1, R2 are transition resistance, and to flow quick resistance, TSC1, TSC4 are by RF1, RF2
Main contact triggering transmitter (the first, the 4th triggering transmitter), TSC2, TSC3 are that (second, third is touched secondary contact triggering transmitter
Send out transmitter), SK1, SK4 are main contact high-pressure IGCT (the first, the 4th high-pressure thyristor), and SK2, SK3 are secondary contact high pressure
IGCT (second, third high-pressure thyristor).
Embodiment
Embodiment 1
A kind of on-load tap-changer of transformer, including switching on-off circuit, described switching on-off circuit include symmetrical point
The odd number tap-change operation circuit and even numbers tap-change operation circuit of cloth, the tap-change operation circuit include working contact K1,
K2, double-contact synchronization transition contact k1, k1 being made up of main contact and secondary contact ' and k2, k2 ' and moving contact A, described point
Joint switching circuit includes the working contact control circuit drawn by tap and main contact control circuit and is connected to main contact
K1, k2 secondary contact control circuit；Described working contact control circuit is that working contact K1, K2 are connected to main contact triggering pick-up
Device TSC1, TSC4 input, main contact triggering transmitter TSC1, TSC4 output are connected to main contact control circuit；It is described
Main contact control circuit transmitter TSC2, TSC3 and transition resistance R1, R2 series arm triggered for secondary contact be parallel to stream
Quick resistance RF1, RF2 and main contact high-pressure thyristor SK1, SK4 series arm both ends；Described secondary contact control circuit is one
Main contact k1, k2 of tap-change operation circuit are connected to other tap-change operation electricity through secondary contact high-pressure thyristor SK3, SK2
Secondary contact k2 ', the k1 ' on road；Described main contact triggering transmitter TSC1, TSC4 is that the master in same tap-change operation circuit touches
Head high-pressure thyristor SK1, SK4 provide trigger current, and described secondary contact triggering transmitter TSC2, TSC3 are and same tap
Secondary contact high-pressure thyristor SK2, SK3 of the secondary contact connection of switching circuit provide trigger current.
In terms of process when fixed contact K2 is switched to by fixed contact K1 from moving contact A, operation principle of the invention is as follows：
For normal condition as shown in figure 1, moving contact A contacts with working contact K1, the first triggering transmitter TSC1 has electric current, the
Two triggering transmitter TSC2, the 3rd triggering transmitter TSC3, the 4th triggering transmitter TSC4 do not have electric current；
Start to switch to double-contact synchronization transition contact k1, k1 ', when going to Fig. 2 positions, moving contact A and working contact
K1 and double-contact synchronization transition contact k1, k1 ' contact, the first high-pressure thyristor SK1 are conducting state, and working contact K1, master touch
Head k1 has electric current simultaneously, and the second triggering transmitter TSC2, the 3rd triggering transmitter TSC3, the 4th triggering transmitter TSC4 are without electricity
Stream.
When going to Fig. 3 positions, moving contact A disconnects with working contact K1 equipotentials without arc, the first high-pressure thyristor SK1 does not have
Electric current, the second triggering transmitter TSC2 have electric current, moving contact A transition contact k1 synchronous with double-contact, k1 ' contacts, the second triggering
Transmitter TSC2, the 3rd triggering transmitter TSC3 have electric current；
Start to switch to double-contact synchronization transition contact k2, k2 ', when going to Fig. 4 positions, moving contact A and double-contact are same
Walk transition contact k1, k1 ', double-contact synchronization transition contact k2, k2 ' contact, the second triggering transmitter TSC2, the 3rd triggering pick-up
Device TSC3 has electric current, and the second high-pressure thyristor SK2, the 3rd high-pressure thyristor SK3 conducting make double-contact synchronization transition contact k1,
K1 ', k2, k2 ' equipotentials, are not likely to produce electric arc；
When going to Fig. 5 positions, moving contact A transition contact k2 synchronous with double-contact, k2 ' contacts, the second triggering transmitter
TSC2, the 3rd triggering transmitter TSC3 have electric current, the 4th triggering transmitter TSC4 no currents；
Start to switch to fixed contact K2, when going to Fig. 6 positions, moving contact A is synchronous with working contact K2 and double-contact
Transition contact k2, k2 ' contact, the second triggering transmitter TSC2, the 3rd triggering transmitter TSC3 do not have electric current, the 4th triggering pick-up
Device TSC4 has electric current；
When going to Fig. 7 positions, moving contact A contacts with working contact K2, and the second triggering transmitter TSC2, the 3rd triggering become
Device TSC3 is sent not have electric current, the 4th triggering transmitter TSC4 has electric current.
When there is following failure, normal work is also can guarantee that without maintenance in time,
When the first high-pressure thyristor SK1 opens a way, transition resistance R1 dominates work, working contact K1, K2 starting the arc arc extinguishing；
When the 4th high-pressure thyristor SK4 opens a way, transition resistance R2 dominates work, working contact K1, K2 starting the arc arc extinguishing；
When the first high-pressure thyristor SK1 short circuits turn on, flow quick resistance RF1 and disconnected in Fig. 4 positions excessively stream, double-contact is synchronous
Transition contact k1, k1', double-contact synchronization transition contact k2, k2' starting the arc arc extinguishing；
When the 4th high-pressure thyristor SK4 short circuits turn on, flow quick resistance RF2 and disconnected in Fig. 4 positions excessively stream, double-contact is synchronous
Transition contact k1, k1', double-contact synchronization transition contact k2, k2' starting the arc arc extinguishing；
When the second high-pressure thyristor SK2 opens a way, working contact K1, K2 starting the arc arc extinguishing；
When the 3rd high-pressure thyristor SK3 opens a way, working contact K1, K2 starting the arc arc extinguishing；
When the second high-pressure thyristor SK2 short circuits turn on, double-contact synchronization transition contact k1, k1' starting the arc arc extinguishing；
When the 3rd high-pressure thyristor SK3 short circuits turn on, double-contact synchronization transition contact k2, k2' starting the arc arc extinguishing；
Embodiment 2
A kind of on-load tap-changer of transformer, described main contact control circuit be secondary contact trigger transmitter TSC2,
TSC3 and transition resistance R1, R2 series arm are parallel to the series arm of fuse and main contact high-pressure thyristor SK1, SK4
Both ends；Other parts and operating principle will not be repeated here with embodiment 1.
Claims (3)
1. a kind of on-load tap-changer of transformer, including switching on-off circuit, described switching on-off circuit include symmetrical
Odd number tap-change operation circuit and even numbers tap-change operation circuit, the tap-change operation circuit include working contact, by leading
The double-contact synchronization transition contact and can be contacted with working contact, double-contact synchronization transition contact that contact and secondary contact form
Moving contact, it is characterised in that：Described tap-change operation circuit includes working contact control circuit and the master drawn by tap
Contact control circuit and the secondary contact control circuit for being connected to main contact；Described working contact control circuit connects for working contact
To the input of main contact triggering transmitter, the output of main contact triggering transmitter is connected to main contact control circuit；Described
Main contact control circuit is parallel to over-current protection device for the series arm of secondary contact triggering transmitter and transition resistance and touched with main
The series arm both ends of head high-pressure thyristor；Described secondary contact control circuit is the main contact of a tap-change operation circuit through pair
Contact high-pressure IGCT is connected to the secondary contact of other tap-change operation circuit；Described main contact triggering transmitter is same
Main contact high-pressure thyristor in tap-change operation circuit provides trigger current, described secondary contact triggering transmitter be with it is same
The secondary contact high-pressure thyristor of the secondary contact connection of tap-change operation circuit provides trigger current.
2. on-load tap-changer of transformer according to claim 1, it is characterised in that：Described over-current protection device is stream
Quick resistance.
3. on-load tap-changer of transformer according to claim 1, it is characterised in that：Described over-current protection device is molten
Disconnected device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762097.4A CN105225814B (en) | 2015-11-10 | 2015-11-10 | A kind of on-load tap-changer of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762097.4A CN105225814B (en) | 2015-11-10 | 2015-11-10 | A kind of on-load tap-changer of transformer |
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| Publication Number | Publication Date |
|---|---|
| CN105225814A CN105225814A (en) | 2016-01-06 |
| CN105225814B true CN105225814B (en) | 2018-01-12 |
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| CN201510762097.4A Active CN105225814B (en) | 2015-11-10 | 2015-11-10 | A kind of on-load tap-changer of transformer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627682B (en) * | 2020-05-07 | 2021-04-06 | 南方电网科学研究院有限责任公司 | Hybrid on-load tap-changer and transistor triggering method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205751825U (en) * | 2015-11-10 | 2016-11-30 | 刁俊起 | A kind of novel transformer on-load voltage regulating switch |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04317522A (en) * | 1991-04-17 | 1992-11-09 | Chubu Electric Power Co Inc | On-load tap exchanger |
| US7595614B2 (en) * | 2007-12-07 | 2009-09-29 | Pennsylvania Transformer Technology, Inc. | Load tap changer |
| CN203119860U (en) * | 2013-03-29 | 2013-08-07 | 刁俊起 | Novel transformer on-load tap changer |
| CN104517753B (en) * | 2014-12-29 | 2017-11-10 | 刁俊起 | A kind of permanent magnetic drive on-load voltage regulating switch |
| CN104517742B (en) * | 2014-12-29 | 2018-04-24 | 刁俊起 | A kind of permanent magnetic drive on-load voltage regulating switch |
| CN104517744B (en) * | 2014-12-29 | 2018-01-12 | 山东洁盟节能环保技术有限公司 | A kind of permanent magnetic drive on-load voltage regulating switch |
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- 2015-11-10 CN CN201510762097.4A patent/CN105225814B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205751825U (en) * | 2015-11-10 | 2016-11-30 | 刁俊起 | A kind of novel transformer on-load voltage regulating switch |
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| CN105225814A (en) | 2016-01-06 |
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