CN103021642B - A kind of load ratio bridging switch - Google Patents
A kind of load ratio bridging switch Download PDFInfo
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- CN103021642B CN103021642B CN201110279164.9A CN201110279164A CN103021642B CN 103021642 B CN103021642 B CN 103021642B CN 201110279164 A CN201110279164 A CN 201110279164A CN 103021642 B CN103021642 B CN 103021642B
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- load ratio
- power switch
- ratio bridging
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- 238000004804 winding Methods 0.000 claims abstract description 62
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 230000033228 biological regulation Effects 0.000 claims description 29
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 210000003141 lower extremity Anatomy 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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Abstract
A kind of load ratio bridging switch.Switch control circuit that the load ratio bridging switch of the present invention includes electronic power switch infrastructure component composition, being connected with transformer regulating winding leading-out wire, it is connected in parallel on the bypass loop at switch control circuit two ends, described electronic power switch infrastructure component includes the channel selector path being made up of electronic power switch and the switch ways of passing by one's way being made up of electronic power switch；Connected with described transformer regulating winding one end lead-out wire in one end of channel selector, more in parallel with crossing way switch one end, and the other end crossing way switch is connected with next group infrastructure component；It is connected in series at a line drawing be connected with the other end of tap-changing windings so that load ratio bridging switch can bear any high voltage adjusting.Control method of the present invention is simple, can reduce the usage quantity of electronic power switch in electronic load tap switch, thus reducing manufacturing cost.
Description
Technical field
The present invention relates to the adjustment of transformator on load voltage, arc suppression coil adjust the switching technology such as circle in power system
Load ratio bridging switch technology.
Background technology
At present, the Voltage Cortrol in operation of power networks, relies primarily on on-load tap changers of transformers to realize, and
Existing load ratio bridging switch is mechanical type.Although mechanical type load ratio bridging switch technology tends to ripe,
Its intrinsic problem cannot solve it is difficult to break through.Intrinsic problem is：(1) when adjusting, overvoltage is produced to electrical network
Impact is inevitable；(2) it is also easy to produce electric arc in handoff procedure, so that transformer oil is polarized, cause often to safeguard；
(3) can not quickly, frequently adjust；(4) unsuitable split-phase is adjusted.
After powerful electronic power switch (bidirectional triode thyristor, IGCT etc.) comes out, Chinese scholars,
Engineers and technicians attempt to substitute mechanical type loaded tap-off with the turn-on and turn-off characteristic of electronic power switch
Switch.In principle, this replacement is feasible, but how to substitute, and technology, economy are just feasible but to have become problem,
So that research is more than 20 year, technology there still is not molding.
General Study is started with from direct replacement, illustrates：
The transformer voltage amplitude of accommodation of traditional structure is ± 10%, and single phase winding is by main winding L0 and 8
Tap-changing windings (L1, L2---L8, the regulated quantity of each tap-changing windings is 2.5%) are formed by connecting, and 9 are drawn
Outlet forms 9 tap branch roads (K0, K2---K8)；Or by main winding L0 and 16 tap-changing windings (L1,
L2---L16, the regulated quantity of each tap-changing windings is 1.25%) be formed by connecting, 17 lead-out wires form 17
Individual tap branch road (K0, K2---K16).
Directly substitute shunting switch with bidirectional power electronic switch, substitute connection principle and see accompanying drawing 1 (8 tune
The pressure single-phase elementary diagram of winding).Draw from elementary diagram, the wiring of this replacement is clear, simply.
By analysis, this direct replacement creates new problem, the maximum steady state voltage problem of every branch road.
When K0 branch road turns on, K4 branch road maximum steady state voltage is 4 times of single tap-changing windings, and K8 branch road is
Big steady state voltage is the twice of K4 branch road, 8 times of single tap-changing windings；When K8 branch road turns on, K4
Branch road maximum steady state voltage is 4 times of single tap-changing windings, and the maximum steady state voltage of K0 branch road is K4 branch road
Twice, 8 times of single tap-changing windings.If voltage-regulation amplitude is ± 10%, branch road maximum steady state electricity
Pressure=0.2 × rated voltage
As each branch road only bears branch road maximum steady state voltage with a bidirectional triode thyristor, produce at present is double
To controllable silicon (repetitive peak reverse voltage VRRMMaximum can only accomplish 8000V), 10KV electricity can only be met
This wiring of pressure grade uses, but economy is bad.35KV and above can only adopt multistage
Controllable silicon in serial connection is bearing branch road maximum steady state voltage.Connect to solve the problems, such as pressure-bearing with multitube, not only economical
Index is bad, occurs in that number of devices is too many again, produces pipe and is used in series problem, leads to technical sophistication.
Exactly above-mentioned technology, economic two large problems, annoying research worker so that this replacement is difficult to break through
To 35KV electric pressure.
Content of the invention
In sum, if finding the shunting switch electrical main connecting wire form reducing branch road maximum steady state voltage,
To the technology of solution, economic two large problems, certainly beneficial.
Main contents of the present invention are as follows：
Load ratio bridging switch of the present invention includes electronic power switch infrastructure component forms and transformator
The switch control circuit that tap-changing windings lead-out wire is connected, is connected in parallel on the bypass loop at switch control circuit two ends,
Described electronic power switch infrastructure component includes the channel selector path being made up of electronic power switch and by electricity
The switch ways of passing by one's way that power electrical switch is constituted；One end of channel selector and described transformer regulating winding one end
Lead-out wire is connected, more in parallel with crossing way switch one end, and the other end crossing way switch organizes infrastructure component string with next
Connection；It is connected in series at a line drawing be connected with the other end of tap-changing windings.
Electronic power switch infrastructure component can connect into word by a channel selector with by a way switch excessively
Female n shape assembly, channel selector and way switch excessively are respectively on the two legs of n；By two n shape assemblies, lead to
Cross and connect that it is crossed way switch and connects composition m shape assembly, it is connected in series a piece line of place's extraction；Switch control
Loop processed can have N number of electronic power switch infrastructure component to be in series, wherein N >=1；Power electronics is opened
The electronic power switch closing infrastructure component is bidirectional triode thyristor or IGCT.
Compared with mechanical type load ratio bridging switch, mechanical intrinsic problem without；With mixed type and directly
Substituted type is compared, and the present invention has the following advantages：
1st, with minimal number of electronic power switch device, solve the problems, such as the on-load voltage regulation of each electric pressure,
Cost is minimum.
2nd, building block system pressure regulation n modular construction is simple, and wiring is clear.
3rd, building block system n pressure regulation unit control method is simple, motion device minimum number, only 2.
4th, building block system pressure regulation n assembly connects number no requirement (NR), can select as needed, will for extraordinary pressure regulation
The transformator asked provides conveniently, flexible pressure regulation means.
Brief description：
Accompanying drawing 1, the single-phase elementary diagram of 8 tap-changing windings.
Accompanying drawing 2, electronic building block type pressure regulation n assembly and its package assembling.
Accompanying drawing 3, the load ratio bridging switch key wiring diagram that arbitrarily N number of pressure regulation unit series connection is formed.
Accompanying drawing 4, electronic building block type pressure regulation m assembly and its package assembling.
Accompanying drawing 5, the load ratio bridging switch electrical wiring schematic diagram that 4 m regulation component series connection are formed.
Specific embodiment：
By analysis, branch road steady state voltage increases, is mainly affected by tap-changing windings electric connecting mode, if
Change its connected mode, just can effectively reduce each branch road maximum steady state voltage.
The electronic power switch that the present invention is produced using existing maturation, such as bidirectional triode thyristor or IGCT,
Change conventional coupling arrangement, by it is carried out with multiple combination, form a kind of new load ratio bridging switch,
And by the simple lead-out wire form changing transformer regulating winding, make electronic building block type regulation component, reach
To with minimum electronic power switch device, solve the problems, such as the transformer on-load voltage regulating of each electric pressure, effectively
Reduce each branch road maximum steady state voltage.
By the original transformator main winding in inside transformer connection and tap-changing windings, disconnect on request, formed
Multiple independent tap-changing windings, and each independent tap-changing windings head and the tail two ends is drawn, each tap-changing windings are electric
On be not directly connected.Connect corresponding with tap-changing windings for load ratio bridging switch, constitute regulation component.
The electronic power switch infrastructure component of the load ratio bridging switch of the present invention can by a channel selector and
Alphabetical n shape assembly is connected into by a way switch excessively, channel selector and way switch excessively are respectively in the two legs of n
On.N shape assembly has three terminals, and the upper left corner is terminal 1, and the lower end of the left lower limb of n assembly is terminal KL, n
The lower end of the right lower limb of assembly is terminal K1, and two electronic power switches are on the two legs of n；Loaded tap-off
The pressure regulation n assembly of switch is connected in series by building block system, sees accompanying drawing 2；In operation, a shutoff, leads for one
Logical, locking each other.When K1 turns on, connect tap-changing windings access, and because K2 is off state, electric current leads to
Cross tap-changing windings and the flowing of path electronic power switch.When K1 turns off, connect tap-changing windings exit, because
K2 is conducting state, and electric current is by electronic power switch flowing of passing by one's way.
The maximum steady state voltage that K1, K2 bear is the voltage that tap-changing windings produce.
Grafting for convenience, can be packaged to n assembly, and the n assembly after encapsulation has four terminals, point
It is not：The left and right lower limb of n assembly claims terminal KL and K1 (and terminal of tap-changing windings connection), former upper left
Angle terminal 1 (tandem connection terminal), then terminal K1 is drawn a terminal 2 (tandem connection from the upper right corner
Terminal).
One n assembly and tap-changing windings connect into a n pressure regulation unit；The terminal KL of n assembly is even
Connect the left end lead-out wire of one tap-changing windings of transformator, the right side of terminal one tap-changing windings of K1 connection transformer
After the lead-out wire of end, draw a terminal 2, form n pressure regulation unit, to control the access of tap-changing windings and to exit.
Path electronic power switch conducting in n pressure regulation unit, electronic power switch of passing by one's way turns off, and tap-changing windings access
Main electric loop, increased the Transformer Winding number of turn；In n pressure regulation unit, path electronic power switch turns off,
Electronic power switch of passing by one's way turns on, and tap-changing windings exit main electric loop, decrease the Transformer Winding number of turn.
The load ratio bridging switch key wiring diagram being formed by arbitrarily N number of pressure regulation unit series connection, is shown in accompanying drawing 3.n
The right terminal 2 of pressure regulation unit and next pressure regulation unit left terminal 1 are connected, and go here and there to meeting pressure regulation proportion requirement,
Form load ratio bridging switch；Pressure regulation is simple, such as heightens secondary voltage, exits one winding of former limit, such as
Turn down secondary voltage, put into one winding of former limit.
For reducing the lead-out wire number of transformer regulating winding, can be used for change, two n shape assemblies pass through
Connecting, it is crossed way switch and connects composition m shape assembly, and it is connected in series place and draws a line, is formed electric
Sub- building block system pressure regulation m assembly and its package assembling, are shown in accompanying drawing 4.
Wherein：Two adjacent tap-changing windings, after internally abutting end connects, draw a line；Another two ends are each
Draw a line, totally three lead-out wires；Two electronic building block type n assemblies, mirror image connects, and forms m assembly,
M assembly after encapsulation has five terminals, terminal 1 and 2 (tandem connection terminal)；Terminal KL, KL1
With K1 (and terminal of tap-changing windings connection)；Three terminals KL, KL1 and K1 of m assembly and two tune
Pressure three lead-out wires of winding connect, and form m pressure regulation unit.
After 4 m assembly series connection, and 8 tap-changing windings connect, and the load ratio bridging switch of formation is electric
Schematic diagram, is shown in accompanying drawing 5.
Its connected mode can also be to be connected into load ratio bridging switch on demand by n assembly and m assembly.Often
Individual pressure regulation branch road maximum steady state voltage is minimum, is the voltage that tap-changing windings produce, and each branch road stable state electricity
Pressure is equal.The access of one tap-changing windings or exit, only need to be changed 2 in n assembly by controlling switch loop
Individual electronic power switch switches off and on state, motion device minimum number.
Can there is N number of electric power electricity in load ratio bridging switch switch control circuit in above-mentioned several connected mode
Son switch infrastructure component is in series, wherein N >=1.
The present invention increases bypass loop also in regulating loop, during solving transformator input, tap-changing windings
Initial Input, is shown in bypass segment in accompanying drawing 5.Bypass loop is made up of a chopper and shunting device,
See bypass segment in accompanying drawing 5.After turning on all of electronic power switch of passing by one's way, chopper disconnects bypass loop.
Detected by current over-zero, send control instruction, make the electronic power switch of passing by one's way of building block system pressure regulation n assembly
Turning off, path electronic power switch turns on, so that tap-changing windings is accessed, until meeting voltage request；Work as needs
When accessing tap-changing windings, repeat the 5th step.If tap-changing windings to be exited, detected by current over-zero, send out
Go out control instruction, so that the path electronic power switch of building block system pressure regulation n assembly is turned off, power electronics of passing by one's way is opened
Close conducting, so that tap-changing windings is exited.
When transformer secondary low voltage, need to heighten, just send in former limit (high-pressure side) and exit one
The instruction of tap-changing windings, reduces primary side winding and accesses number, increase no-load voltage ratio, reach the purpose heightening secondary voltage.
When transformer secondary voltage is higher, need to turn down, just send one pressure regulation of access in former limit (high-pressure side)
The instruction of winding, increases primary side winding and accesses number, reduce no-load voltage ratio, reach the purpose turning down secondary voltage.
The all wiring of above-mentioned accompanying drawing are single-phase, and three-phase connection principle is similar to.
Load ratio bridging switch of the present invention, also can connect the winding configuration equipment such as arc suppression coil.
The connected mode of load ratio bridging switch of the present invention is not limited to n shape as herein described or m
The connected mode of shape, the similar connection that other belong to this design each falls within protection scope of the present invention.
Claims (5)
1. a kind of load ratio bridging switch, including being made up of electronic power switch infrastructure component and transformer regulating winding leading-out wire phase
Switch control circuit even, be connected in parallel on the bypass loop at switch control circuit two ends it is characterised in that：Described electronic power switch basis
Assembly includes the channel selector being made up of electronic power switch and the way switch excessively being made up of electronic power switch；One end of channel selector
Connect with described transformer regulating winding one end lead-out wire, more in parallel with crossing way switch one end, cross the other end and next group of way switch
Infrastructure component is connected；Cross the other end of way switch and next group infrastructure component connect be connected in series at a line of extraction and pressure regulation
The other end of winding connects.
2. load ratio bridging switch according to claim 1 it is characterised in that：Electronic power switch infrastructure component is by a path
Switch and one cross way switch and connect into alphabetical n shape assembly, channel selector and cross way switch respectively on the two legs of n shape.
3. load ratio bridging switch according to claim 2 it is characterised in that：By two n shape assemblies, by its mistake of connecting
Way switch connects composition m shape assembly, and it is connected in series a piece line of place's extraction.
4. load ratio bridging switch according to claim 1 it is characterised in that：Switch control circuit has N number of electronic power switch
Infrastructure component is in series, wherein N>1.
5. load ratio bridging switch according to claim 1 it is characterised in that：The power electronics of electronic power switch infrastructure component
Switch is bidirectional triode thyristor or IGCT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279164.9A CN103021642B (en) | 2011-09-20 | 2011-09-20 | A kind of load ratio bridging switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110279164.9A CN103021642B (en) | 2011-09-20 | 2011-09-20 | A kind of load ratio bridging switch |
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| Publication Number | Publication Date |
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| CN103021642A CN103021642A (en) | 2013-04-03 |
| CN103021642B true CN103021642B (en) | 2017-03-01 |
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| CN201110279164.9A Expired - Fee Related CN103021642B (en) | 2011-09-20 | 2011-09-20 | A kind of load ratio bridging switch |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113317B (en) * | 2014-06-12 | 2017-02-15 | 山东大学 | Bypass auxiliary on-load tap-changer and method thereof |
| CN105826063B (en) * | 2016-05-30 | 2017-08-11 | 东北农业大学 | Three-Phase Distribution Transformers are contactless to be downloaded from dynamic positive-negative voltage-regulation tap changer device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1244358A (en) * | 1967-12-06 | 1971-09-02 | Egon Scheubeck | Improvements in on-load tap-changing arrangements for three phase transformers |
| CN2896468Y (en) * | 2006-06-02 | 2007-05-02 | 郑州大学 | Staged loaded pressure-regulation switch |
| CN101430967A (en) * | 2008-08-21 | 2009-05-13 | 上海华明电力设备制造有限公司 | Thyristor resistor transition switching on-load tap-changer |
| CN102208265A (en) * | 2011-03-01 | 2011-10-05 | 中国农业大学 | On-load tapping switch of composite switching-type transformer |
-
2011
- 2011-09-20 CN CN201110279164.9A patent/CN103021642B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1244358A (en) * | 1967-12-06 | 1971-09-02 | Egon Scheubeck | Improvements in on-load tap-changing arrangements for three phase transformers |
| CN2896468Y (en) * | 2006-06-02 | 2007-05-02 | 郑州大学 | Staged loaded pressure-regulation switch |
| CN101430967A (en) * | 2008-08-21 | 2009-05-13 | 上海华明电力设备制造有限公司 | Thyristor resistor transition switching on-load tap-changer |
| CN102208265A (en) * | 2011-03-01 | 2011-10-05 | 中国农业大学 | On-load tapping switch of composite switching-type transformer |
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| CN103021642A (en) | 2013-04-03 |
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| CB02 | Change of applicant information |
Address after: 100191 room Executive Hotel, Garden Road, Beijing, Haidian District, room 30, 6418 Applicant after: Zhang Wei Applicant after: Yuan Jiatao Address before: 100096, Beijing, Haidian District Qinghe Longgang Road, Lane 2, building 12, unit 1211 Applicant before: Zhang Wei Applicant before: Yuan Jiatao |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhao Yu Inventor after: Huang Naiping Inventor after: Zhou Qingdao Inventor after: Wang Zhenming Inventor after: Li Hongping Inventor before: Yuan Jiatao Inventor before: Zhang Wei |
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Effective date of registration: 20170120 Address after: 464100 Pingqiao Town, Pingqiao District, Henan, China, Applicant after: Datang XinYang Electric Power Generation Co., Ltd. Address before: 100191 room Executive Hotel, Garden Road, Beijing, Haidian District, room 30, 6418 Applicant before: Zhang Wei Applicant before: Yuan Jiatao |
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