CN202183304U - Switching mechanism of vacuum on-load tap changing switch - Google Patents
Switching mechanism of vacuum on-load tap changing switch Download PDFInfo
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- CN202183304U CN202183304U CN2011200643953U CN201120064395U CN202183304U CN 202183304 U CN202183304 U CN 202183304U CN 2011200643953 U CN2011200643953 U CN 2011200643953U CN 201120064395 U CN201120064395 U CN 201120064395U CN 202183304 U CN202183304 U CN 202183304U
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Abstract
The utility model discloses a switching mechanism of a vacuum on-load tap changing switch. Each phase respectively comprises a first parallel connection circuit arranged on the N branching side and a second parallel connection circuit arranged on the N+1 branching side. The first parallel connection circuit is formed by connecting a main through-flow switch K1 and a transition circuit on the N side in parallel, and a second parallel connection circuit is formed by connecting a main through-flow switch K2 and a transition circuit on the N+1 side in parallel. The transition circuit on the N side is formed by connecting a vacuum pipe V1 and a transition resistor R1 in series. The transition circuit on the N+1 side is formed by connected a vacuum pipe V2 and a transition resistor R2 in series. The switching mechanism of the vacuum on-load tap changing switch is characterized by further comprising a working position conversion circuit which is formed by a vacuum pipe V3 and a conversion switch S connected with the vacuum pipe V3 in series. The input end of the first parallel connection circuit is provided with a switching point A, and the input end of the second parallel connection circuit is provided with a switching point B. A moving contact of the conversion switch S is electrically connected with the switching point A or the switching point B in switching mode. Only three vacuum pipes are used, production cost is reduced, switching steps are fewer, and reliability is high.
Description
Technical field
The utility model relates to a kind of switching mechanism of vacuum on-load operation switch.
Background technology
Vacuum on-load operation switch is mainly used in the use occasion that needs frequent pressure regulation, can effectively solve the inconvenience that operation maintenance brings to the user.In the prior art; The relatively more typical circuit structure of the switching mechanism of the vacuum on-load operation switch that is made up of vacuum tube is as shown in Figure 1, and (its three-phase circuit is in full accord; Fig. 1 has expressed a phase wherein); Each is made up of diverter switch four vacuum tube V1, V2, V3, V4 and transition resistance R1, R2, and comprises the main flow passage switch K1 that is positioned at N tap side, the main flow passage switch K2 that is positioned at N+1 tap side.
Wherein: parallelly connected with main flow passage switch K1 after vacuum tube V2 connects with transition resistance R1, vacuum tube V1 is parallelly connected with main flow passage switch K1, and they have constituted three through-flow loops between N tap side and current output terminal 0.Parallelly connected with main flow passage switch K2 after vacuum tube V3 connects with transition resistance R2, vacuum tube V4 is parallelly connected with main flow passage switch K2, and they have also constituted three through-flow loops between N+1 tap side and current output terminal 0.Wherein vacuum tube V1, V4 play main on-off action, and vacuum tube V2, V3 play a transition role.
For realizing the quick resistance switching of N tap to the N+1 tap, four vacuum tubes require action successively according to switching.Amounting to needed for six steps could realize transfer process, and concrete switch step is seen Fig. 2 a～Fig. 2 g.The N+1 tap is to the handoff procedure of N tap, and step is the inverse process of Fig. 2 g～Fig. 2 a.Need the action successively of four vacuum tubes equally.
In the prior art, each needs four vacuum tubes mutually, and cost is higher.And switch step is more, and action realizes relative complex, and the probability that breaks down is big.
Summary of the invention
The purpose of the utility model is to provide a kind of every phase commutation circuit only to use the switching mechanism of three vacuum tubes and the vacuum on-load operation switch that switch step is less, reliability is high for the above-mentioned shortcoming that solves the prior art existence.
The technical scheme that the utility model is taked is: a kind of switching mechanism of vacuum on-load operation switch, and each includes mutually: first parallel circuits and second parallel circuits that is positioned at N+1 tap side that are positioned at N tap side; Described first parallel circuits is made up of main flow passage switch K1 and the parallel connection of N side transition circuit, and described second parallel circuits is made up of main flow passage switch K2 and the parallel connection of N+1 side transition circuit; Described N side transition circuit is connected with transition resistance R1 by vacuum tube V1 and is constituted; Described N+1 side transition circuit is connected with transition resistance R2 by vacuum tube V2 and is constituted; Be characterized in, also comprise a service position change-over circuit, described service position change-over circuit is made up of a vacuum tube V3 and the change over switch S that is connected in series with it; The input of described first parallel circuits is provided with a switching point A, and the input of described second parallel circuits is provided with a switching point B; The moving contact of described change over switch S is connected with described switching point A or described switching point B convert electrical.
The switching mechanism of above-mentioned a kind of vacuum on-load operation switch, wherein, described switching point A is made up of the tie point of transition resistance R1 one end of the main flow passage switch K1 of N tap side and N side transition circuit;
Described switching point B is made up of the tie point of transition resistance R2 one end of the main flow passage switch K2 of N+1 tap side and N+1 side transition circuit.
The switching mechanism of above-mentioned a kind of vacuum on-load operation switch, wherein,
The tie point that is positioned at vacuum tube V1 one end of described main flow passage switch K1 and N side transition circuit constitutes current output terminal, and the tie point that is positioned at vacuum tube V2 one end of described main flow passage switch K2 and N+1 side transition circuit constitutes current output terminal; Said two current output terminals are connected;
The end of the vacuum tube V3 of described service position change-over circuit is electrically connected with said current output terminal, and the other end is connected with the moving contact of said change over switch S.
The switching mechanism of above-mentioned a kind of vacuum on-load operation switch, wherein, described vacuum tube V3 is in open position, and change over switch S carries out switching motion; After change over switch S switching motion finished, vacuum tube V3 just broke off or closed action, and both have interlocking capability.
Because the utility model has been taked above technical scheme, its generating technique effect is tangible:
1, owing between N tap side and N+1 tap side, designed a service position change-over circuit,, saved vacuum tube, manufacturing cost is reduced so only need use three vacuum tubes just to realize conversion process.
2, in the handoff procedure of N tap side direction N+1 tap side or N+1 tap side direction N tap side, the action of three vacuum tubes is symmetrical, and reliability is improved.
Description of drawings
Fig. 1 is the single-phase electrical schematic diagram of the initial condition of being switched by N tap side direction N+1 tap side of a kind of embodiment of the switching mechanism of prior art vacuum on-load operation switch.
Fig. 2 a～Fig. 2 g has shown the successively sketch map of action of prior art embodiment by N tap side direction N+1 tap side handoff procedure.
Fig. 3 is the single-phase electrical schematic diagram of the initial condition of being switched by N tap side direction N+1 tap side of a kind of embodiment of the switching mechanism of the utility model vacuum on-load operation switch.
Fig. 4 a～Fig. 4 f has shown the successively sketch map of action of the utility model embodiment by N tap side direction N+1 tap side handoff procedure.
Embodiment
Further specify the concrete structure and the characteristic of the utility model below in conjunction with embodiment and accompanying drawing.
See also Fig. 3, Fig. 3 is the structural representation of the initial condition of being switched by N tap side direction N+1 tap side of a kind of embodiment of the switching mechanism of the utility model vacuum on-load operation switch.Each switching mechanism can comprise and one switch mutually, two switch when identical or three-phase switches simultaneously that each circuit that switches mutually is all identical, as shown in Figure 3.
The switching mechanism of the utility model vacuum on-load operation switch, each includes mutually: be positioned at N tap side first parallel circuits 1, be positioned at second parallel circuits 2 and the service position change-over circuit 3 of N+1 tap side.
Described first parallel circuits 1 is made up of main flow passage switch K1 and the parallel connection of N side transition circuit, and wherein said N side transition circuit is connected with transition resistance R1 by vacuum tube V1 and constituted;
Described second parallel circuits 2 is made up of main flow passage switch K2 and the parallel connection of N+1 side transition circuit, and wherein, described N+1 side transition circuit is connected with transition resistance R2 by vacuum tube V2 and constituted;
Described service position change-over circuit 3 is made up of a vacuum tube V3 and the change over switch S that is connected in series with it.The input of described first parallel circuits is provided with a switching point A, and the input of described second parallel circuits is provided with a switching point B; The moving contact of described change over switch S is connected with described switching point A or described switching point B convert electrical.
Switching point A described in the present embodiment is made up of the tie point of transition resistance R1 one end of the main flow passage switch K1 of N tap side and N side transition circuit; Described switching point B is made up of the tie point of transition resistance R2 one end of the main flow passage switch K2 of N+1 tap side and N+1 side transition circuit.In whole handoff procedure, described vacuum tube V3 plays main on-off action, and described vacuum tube V1, V2 play a transition role.
In the utility model; The tie point that is positioned at vacuum tube V1 one end of described main flow passage switch K1 and N side transition circuit constitutes current output terminal 0, and the tie point that is positioned at vacuum tube V2 one end of described main flow passage switch K2 and N+1 side transition circuit constitutes current output terminal 0; Said two current output terminals 0 are connected; The end of the vacuum tube V3 of described service position change-over circuit is electrically connected with said current output terminal 0, and the other end is connected with the moving contact of said change over switch S.
In the switching mechanism of a kind of vacuum on-load operation switch of the utility model, when described vacuum tube V3 is in open position, change over switch S carries out switching motion; After change over switch S switching motion finished, vacuum tube V3 just broke off or closed action, and both have interlocking capability.
See also Fig. 4 a～Fig. 4 f, Fig. 4 a～Fig. 4 f has shown the successively sketch map (with one of them single-phase explain of three-phase system) of the embodiment of action of the utility model by N tap side direction N+1 tap side handoff procedure.
Fig. 4 a is state one (initial state): main flow passage switch K1 is closed; K2 breaks off; The electric current of N tap side flows to current output terminal 0 through three branch roads; Wherein: a branch road is main flow passage switch K1, and another branch road is the N side transition circuit that vacuum tube V1 and transition resistance R1 constitute, and a branch road is the service position change-over circuit that vacuum tube V3 and change over switch S constitute again.
Fig. 4 b is state two (first step): main flow passage switch K1, K2 all break off; The electric current of N tap side flows to current output terminal 0 through two branch roads; Wherein: a branch road is the N side transition circuit that vacuum tube V1 and transition resistance R1 constitute, and another branch road is the service position change-over circuit that vacuum tube V3 and change over switch S constitute.
Fig. 4 c is state three (second step): main flow passage switch K1, K2 all break off, and vacuum tube V3 breaks off, and the vacuum tube V2 of N+1 tap side is closed.N tap side and N+1 tap side realize bridge joint, and electric current flows to current output terminal 0 through resistance R 1, vacuum tube V1 and resistance R 2, vacuum tube V2 respectively through two taps.
Fig. 4 d is state four (the 3rd step): change over switch S action, and make switching point A point and vacuum tube V3 break off, switching point B point and vacuum tube V3 connect.Electric current flows to current output terminal 0 still through two taps through resistance R 1, vacuum tube V1 and resistance R 2, vacuum tube V2.
Fig. 4 e is state five (the 4th step): vacuum tube V3 is closed, and vacuum tube V1 breaks off, and the bridge joint of N tap side and N+1 tap side is removed.The electric current of N+1 tap side flows to current output terminal 0 through two branch roads, and wherein: a branch road is the N+1 side transition circuit that vacuum tube V2 and transition resistance R2 constitute, and another branch road is the service position change-over circuit that vacuum tube V3 and change over switch S constitute.
Fig. 4 f is state six (the 5th step): main flow passage switch K2 is closed; The electric current of N+1 tap side flows to current output terminal 0 through three branch roads; Wherein: a branch road is main flow passage switch K2, and another branch road is the N+1 side transition circuit of vacuum tube V2 and transition resistance R2 formation, a branch road is the service position change-over circuit that vacuum tube V3 and change over switch change over switch S constitute again.
Through above-mentioned five steps, vacuum on-load operation switch has been realized the switching from N tap side to N+1 tap side.
Switching from N+1 tap side to N tap side, step for Fig. 4 f to Fig. 4 a, be the inverse process of Fig. 4 a to 4f, the action of three vacuum tubes is symmetrical.
The utility model product with compact structure only needs three vacuum tubes, and is easy for installation, and switch step is less, simple to operate, reliable in action property high.Adopt the vacuum contact arc extinguishing, have the life-span long, do not pollute surrounding medium, be suitable for the advantage of frequent operation.With the supporting use of transformer, the output voltage not cutting off the power supply, can change under the on-load situation transformer tap, adjustment transformer reaches the purpose that guarantees power supply quality, improves power factor, energy savings, saving operating cost expense.
Though the utility model discloses as above with preferred embodiment; But it is not in order to limit the utility model; Any technical staff in the art; In spirit that does not break away from the utility model and scope, the improvement and the adjustment of the unsubstantiality that the utility model is made must belong to the protection range of the utility model.
Claims (4)
1. the switching mechanism of a vacuum on-load operation switch, each includes mutually: first parallel circuits and second parallel circuits that is positioned at N+1 tap side that are positioned at N tap side; Described first parallel circuits is made up of main flow passage switch K1 and the parallel connection of N side transition circuit, and described second parallel circuits is made up of main flow passage switch K2 and the parallel connection of N+1 side transition circuit; Described N side transition circuit is connected with transition resistance R1 by vacuum tube V1 and is constituted; Described N+1 side transition circuit is connected with transition resistance R2 by vacuum tube V2 and is constituted; It is characterized in that, also comprise a service position change-over circuit, described service position change-over circuit is made up of a vacuum tube V3 and the change over switch S that is connected in series with it; The input of described first parallel circuits is provided with a switching point A, and the input of described second parallel circuits is provided with a switching point B; The moving contact of described change over switch S is connected with described switching point A or described switching point B convert electrical.
2. the switching mechanism of a kind of vacuum on-load operation switch according to claim 1 is characterized in that, described switching point A is made up of the tie point of transition resistance R1 one end of the main flow passage switch K1 of N tap side and N side transition circuit;
Described switching point B is made up of the tie point of transition resistance R2 one end of the main flow passage switch K2 of N+1 tap side and N+1 side transition circuit.
3. the switching mechanism of a kind of vacuum on-load operation switch according to claim 1 is characterized in that,
The tie point that is positioned at vacuum tube V1 one end of described main flow passage switch K1 and N side transition circuit constitutes current output terminal, and the tie point that is positioned at vacuum tube V2 one end of described main flow passage switch K2 and N+1 side transition circuit constitutes current output terminal; Said two current output terminals are connected;
The end of the vacuum tube V3 of described service position change-over circuit is electrically connected with said current output terminal, and the other end is connected with the moving contact of said change over switch S.
4. the switching mechanism of a kind of vacuum on-load operation switch according to claim 1 is characterized in that, described vacuum tube V3 is in open position, and change over switch S carries out switching motion; After change over switch S switching motion finished, vacuum tube V3 just broke off or closed action, and both have interlocking capability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200643953U CN202183304U (en) | 2011-03-11 | 2011-03-11 | Switching mechanism of vacuum on-load tap changing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200643953U CN202183304U (en) | 2011-03-11 | 2011-03-11 | Switching mechanism of vacuum on-load tap changing switch |
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| Publication Number | Publication Date |
|---|---|
| CN202183304U true CN202183304U (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200643953U Expired - Lifetime CN202183304U (en) | 2011-03-11 | 2011-03-11 | Switching mechanism of vacuum on-load tap changing switch |
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| CN (1) | CN202183304U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655159A (en) * | 2016-01-19 | 2016-06-08 | 浙江宝威电气有限公司 | Novel on-load tap voltage regulating switch |
| CN112071672A (en) * | 2020-07-22 | 2020-12-11 | 中国电力科学研究院有限公司 | Vacuum on-load tap-changer transition device and switching method of transition device |
| WO2021258621A1 (en) * | 2020-06-24 | 2021-12-30 | 中国电力科学研究院有限公司 | Vacuum on-load tap-changer transition circuit with isolation contacts and voltage regulation method |
| WO2022104902A1 (en) * | 2020-11-18 | 2022-05-27 | 中国电力科学研究院有限公司 | Symmetrical vacuum bubble load-balancing transition circuit apparatus, and control method |
-
2011
- 2011-03-11 CN CN2011200643953U patent/CN202183304U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655159A (en) * | 2016-01-19 | 2016-06-08 | 浙江宝威电气有限公司 | Novel on-load tap voltage regulating switch |
| WO2021258621A1 (en) * | 2020-06-24 | 2021-12-30 | 中国电力科学研究院有限公司 | Vacuum on-load tap-changer transition circuit with isolation contacts and voltage regulation method |
| CN112071672A (en) * | 2020-07-22 | 2020-12-11 | 中国电力科学研究院有限公司 | Vacuum on-load tap-changer transition device and switching method of transition device |
| WO2022104902A1 (en) * | 2020-11-18 | 2022-05-27 | 中国电力科学研究院有限公司 | Symmetrical vacuum bubble load-balancing transition circuit apparatus, and control method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |