CN105304358A - Vacuum load tap switch employing deactivated vacuum tube after ending voltage regulation switching - Google Patents
Vacuum load tap switch employing deactivated vacuum tube after ending voltage regulation switching Download PDFInfo
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- CN105304358A CN105304358A CN201410315110.7A CN201410315110A CN105304358A CN 105304358 A CN105304358 A CN 105304358A CN 201410315110 A CN201410315110 A CN 201410315110A CN 105304358 A CN105304358 A CN 105304358A
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Abstract
The invention provides a vacuum load tap switch employing a deactivated vacuum tube after ending voltage regulation switching. An auxiliary moving contact (FG11), an upper auxiliary fixed contact (FA11) and a lower auxiliary fixed contact (FA21) are added on the basis of the vacuum load tap switch. After switching is ended, the added contact replaces the vacuum tube as a carrier of transformer loop current, so that the shortage in technical performance caused by the defects of the structure is well solved; the service lifetime of the vacuum tube can be significantly prolonged by implementation of the vacuum load tap switch; the capability of resisting surge current and overload current is effectively improved; and the vacuum load tap switch can be applied to a load tap switch for end voltage regulation or a load tap switch for middle voltage regulation.
Description
Technical field
What the present invention relates to is a kind of power transformer vacuum on-load operation switch.
Background technology
Vacuum on-load operation switch is the significant components of power transformer, bears the critical function of Voltage Cortrol in electric power system, and the safe operation of ability to transformer of the length in its blowout unit vacuum tube life-span and overload-resistant electric current, surge current is most important.Vacuum on-load operation switch comprises the on load tap changer of middle part voltage regulating and the on load tap changer of end pressure regulation.The on load tap changer of middle part voltage regulating by two moving contacts, two above determine contact, determine contact under two, determine contact in two, be connected in two determine the first vacuum tube between contact, be connected to one go up determine contact and one under determine the second vacuum tube between contact and resistance forms; The on load tap changer of end pressure regulation by moving contact, upper determine contact, lower determine contact, in determine contact, common port, be connected in determine the first vacuum tube between contact and common port, be connected to and above determine the second vacuum tube between contact and common port and resistance forms.In the vacuum on-load operation switch of prior art, after pressure regulation finishing switching, vacuum tube is as the carrier of transformer circuit electric current, work must be participated in, this intrinsic technological deficiency causes has higher requirement to vacuum tube quality, and useful life, overload-resistant, surge current ability deficiency, limit the application in large operating current occasion.
Improvement opportunity for vacuum on-load operation switch has a lot, and such as number of patent application is " switching mechanism of vacuum on-load operation switch " disclosed in the patent application document of 200920076183.X; Profit application number is " vacuum on-load tap-changer double-vacuum-tube excessive circuit " disclosed in the patent application document of 201120202488.8.But after all not solving pressure regulation finishing switching, vacuum tube must participate in the problem of work.
Summary of the invention
The object of the present invention is to provide a kind of useful life, the vacuum on-load operation switch that the pressure regulation finishing switching final vacuum pipe overload-resistant, surge current ability is strong is deactivated.
The present invention includes the on load tap changer of middle part voltage regulating and the on load tap changer of end pressure regulation.
The on load tap changer of middle part voltage regulating of the present invention comprises by left moving contact G11, right moving contact G12, contact A11 is determined in upper left, upper right determines contact A12, contact A21 is determined in lower-left, contact A22 is determined in bottom right, leftly determine contact A31, rightly determine contact A32, be connected to and leftly determine contact A31 and right the first vacuum tube K1 determined between contact A32, be connected to one upper determine contact and and this is determined contact reverse position one under determine the on load tap changer of the middle part voltage regulating that the second vacuum tube K2 between contact and resistance R forms, also comprise auxiliary moving contact FG11, upper assisting determines contact FA11, lower assisting determines contact FA21, auxiliary moving contact FG11 is connected with the moving contact that the second vacuum tube K2 is connected with resistance R by the first conducting strip GX, upper auxiliary determine contact FA11 by the second conducting strip AX1 with or not be not connected the second vacuum tube K2 with resistance R above determine contact and be connected, lower assist determine contact FA21 pass through the 3rd conducting strip AX2 be connected with resistance R with the second vacuum tube K2 determine contact A21 and be connected down.
The on load tap changer of middle part voltage regulating of the present invention can also comprise:
1, upper right is determined contact A12 and is determined to be connected the second vacuum tube K2 and resistance R between contact A21 with lower-left, auxiliary moving contact FG11 is connected with right moving contact G12 by the first conducting strip GX, upper auxiliary determine contact FA11 and determine contact A11 by the second conducting strip AX1 with upper left and be connected, lower assisting is determined contact FA21 and is passed through the 3rd conducting strip AX2 and determine contact A21 with lower-left and be connected.
2, upper left is determined contact A11 and is determined to be connected the second vacuum tube K2 and resistance R between contact A22 with bottom right, auxiliary moving contact FG11 is connected with left moving contact G11 by the first conducting strip GX, upper auxiliary determine contact FA11 and determine contact A12 by the second conducting strip AX1 with upper right and be connected, lower assisting is determined contact FA21 and is passed through the 3rd conducting strip AX2 and determine contact A22 with bottom right and be connected.
The on load tap changer of end of the present invention pressure regulation comprises by moving contact G11, above determine contact A11, determine down contact A21, in determine contact A31, common port X, be connected to the first vacuum tube K1 determined between contact A31 and common port X, be connected to and determine contact A11 or the lower on load tap changer determining the end pressure regulation that the second vacuum tube K2 between contact A21 and common port X and resistance R forms, also comprise auxiliary moving contact FG11, upper assisting determines contact FA11, lower assisting determines contact FA21, moving contact G11 is connected by the first conducting strip GX with upper auxiliary moving contact FG11, upper auxiliary determine contact FA11 and be connected by the second conducting strip AX1 with common port X, lower auxiliary determine contact FA21 and be connected by the 3rd conducting strip AX2 with common port X.
Core of the present invention is the increase in a moving contact FG11, assists for a pair and determine contact FA11, FA21.After pressure regulation finishing switching, by the moving contact FG11 increased newly, determine contact FA11 (or FA21) and replace vacuum tube, the operating current of carrying transformer circuit.Vacuum tube only works in the process of pressure regulation switching, after finishing switching, does not participate in work.
Compared with the prior art main feature of the present invention is embodied in: compared with the present invention participates in the on load tap changer of work with current vacuum tube K1, adds a moving contact FG11, assists for a pair and determine contact FA11, FA21.After pressure regulation finishing switching, by the moving contact FG11 increased newly, determine contact FA11 (or FA21) and replace vacuum tube, the operating current of carrying transformer circuit.Enforcement of the present invention can increase the useful life of vacuum tube significantly, improves the ability of antisurge, overload current.Along with the raising to the quality of power supply and capacity requirement, the enforcement of this device improves vacuum on-load operation switch electric current conveying capacity, has widened the application in large operating current occasion.Work is more reliable, and stability is better, and the enforcement of scheme has compact conformation, and technique is simple, the advantages such as cost is low.
Accompanying drawing explanation
Fig. 1 is that middle part voltage regulating loading tap changer vacuum tube of the present invention is deactivated apparatus structure schematic diagram;
Fig. 2 is that end of the present invention voltage regulating loading tap changer vacuum tube is deactivated apparatus structure schematic diagram;
Fig. 1-1 to Fig. 1-5 is that middle part voltage regulating loading tap changer vacuum tube of the present invention is deactivated device scheme implementation schematic diagram;
Fig. 2-1 to Fig. 2-2 is that end of the present invention voltage regulating loading tap changer vacuum tube is deactivated device scheme implementation schematic diagram.
Embodiment
Below in conjunction with accompanying drawing citing, the present invention is described in more detail:
Composition graphs 1, the first execution mode of the present invention is a kind of on load tap changer of middle part voltage regulating.Comprise moving contact G11, G12, auxiliary moving contact FG11, determine contact A11, determine contact A12, determine contact A21, determine contact A22, determine contact A31, determine contact A32, assist and determine contact FA11, assist and determine contact FA21, conducting strip GX, conducting strip AX1, conducting strip AX2, vacuum tube K1, vacuum tube K2 and resistance R.
Moving contact G12 is connected by conducting strip GX with auxiliary moving contact FG11, determines contact A11, determines contact A21 and determine contact FA11 respectively by conducting strip AX1, conducting strip AX2 with auxiliary, assist and determine contact FA21 and be connected.
Determine contact A11 (or determining contact A21), auxiliary determine contact FA11 (or auxiliary determine contact FA21), assist moving contact FG11, moving contact G12, determine the operating current that contact A12 (or determining contact A22) carries on-load shunting switch.
Moving contact G11, moving contact G12 and determine contact A31, determine contact A32 and can disconnect, also can connect.
Determining contact A31, determining to be attached thereto by vacuum tube K1 between contact A32.Determining contact A12, determining to be attached thereto by vacuum tube K2, resistance R between contact A21.
Composition graphs 1, the second execution mode of the present invention is also a kind of on load tap changer of middle part voltage regulating, and its part is identical with the first execution mode, and its syndeton is:
Moving contact G11 is connected by conducting strip GX with auxiliary moving contact FG11, determines contact A12, determines contact A22 and determine contact FA11 respectively by conducting strip AX1, conducting strip AX2 with auxiliary, assist and determine contact FA21 and be connected.
Determine contact A12 (or determining contact A22), auxiliary determine contact FA11 (or auxiliary determine contact FA21), assist moving contact FG11, moving contact G11, determine the operating current that contact A11 (or determining contact A21) carries on-load shunting switch.
Moving contact G11, moving contact G12 and determine contact A31, determine contact A32, can disconnect, also can connect.
Determining contact A31, determining to be attached thereto by vacuum tube K1 between contact A32.Determining contact A11, determining to be attached thereto by vacuum tube K2, resistance R between contact A22.
Composition graphs 2, the third execution mode of the present invention is the on load tap changer of a kind of end pressure regulation.Comprise moving contact G11, auxiliary moving contact FG11, determine contact A11, determine contact A21, determine contact A31, assist and determine contact FA11, assist and determine contact FA21, conducting strip GX, conducting strip AX1, conducting strip AX2, vacuum tube K1, vacuum tube K2, resistance R, common port X.Moving contact G11 is connected by conducting strip GX with auxiliary moving contact FG11, auxiliary determine contact FA11, assists and determine contact FA21 and to hold with common port X respectively by conducting strip AX1, conducting strip AX2 and be connected.
After on load tap changer finishing switching, determine contact A11 (or determining contact A21), moving contact G11, auxiliary moving contact FG11, auxiliaryly determine the operating current that contact FA11 (or assist determine contact FA21) carries on-load shunting switch.
Moving contact G11, determine contact A31 and can disconnect, also can connect.
Determining to be connected by vacuum tube K1 between contact A31 and common port X.
Determining between contact A11 and common port X, connected by vacuum tube K2, resistance R, or determining between contact A21 and common port X, connected by vacuum tube K2, resistance R, the two can only select a kind of connected mode
Below in conjunction with Fig. 1-1 to Fig. 1-5, middle part voltage regulating loading tap changer of the present invention is described, the process that vacuum tube K1 deactivates.
Composition graphs 1-1: when not receiving pressure regulation instruction, load current IN by tap 5, determine contact A12, moving contact G12, auxiliary moving contact FG11, auxiliaryly determine contact FA11, determine contact A11, tap 6 flows out.
In conjunction with Fig. 1-2: after receiving pressure regulation instruction, after auxiliary moving contact FG11, disengaging are assisted and are determined contact FA11, vacuum tube K2 connects, load current IN by tap 5, determine contact A12, moving contact G12, determine contact A32, vacuum tube K1, determine contact A31, moving contact G11, determine contact A11, tap 6 flows out.So the disjunction of auxiliary moving contact FG11 can not produce electric arc.When moving to position as shown in the figure, vacuum tube K1 disconnects, and load current IN flows out through tap 5, resistance R, vacuum tube K2, tap 6.
Composition graphs 1-3: vacuum tube K1 disconnect interchange half cycle after, vacuum tube K1 arc extinction, moving contact G11, G12, determines contact A11, A12 disjunction.Load current IN is flowed out by tap 5, resistance R, vacuum tube K2, tap 6, until move to position as shown in the figure.
Composition graphs 1-4: when moving to position as shown in the figure, vacuum tube K1 connect.At this moment load current IN by tap 6, determine contact A21, moving contact G11, determine contact A31, vacuum tube K1, determine contact A32, moving contact G12, determine contact A22, tap 7 flows out.Simultaneously at tap 5, resistance R, vacuum tube K2, determine contact A21, moving contact G11, determine contact A31, vacuum tube K1, determine contact A32, moving contact G12, determine contact A22, have a circulation IR to exist between tap 7, by the bridge joint of resistance R, avoid inside transformer coil short, burn out transformer.Determine before contact FA21 closes at auxiliary moving contact FG11 with auxiliary, vacuum tube K2 disconnects, and circulation IR disappears.
Composition graphs 1-5: auxiliary moving contact FG11 with auxiliary determine contact FA21 closed, now can not arcing.Load current IN by tap 6, determine contact A21, auxiliary determine contact FA21, assist moving contact FG11, moving contact G12, determine contact A22, tap 7 flows out, complete the switching of a point of termination process, vice versa.
Illustrate that the vacuum tube K1 of end of the present invention voltage regulating loading tap changer deactivates process below in conjunction with Fig. 2-1 to Fig. 2-5.
When composition graphs 2-1 does not receive pressure regulation instruction, load current IN by tap 5, determine contact A11, moving contact G11, auxiliary moving contact FG11, auxiliaryly determine contact FA11, common port X and flow out.
Composition graphs 2-2 is after receiving pressure regulation instruction, and after auxiliary moving contact FG11, disengaging are assisted and determined contact FA11, vacuum tube K2 connects.Load current IN by tap 5, determine contact A11, moving contact G11, determine contact A31, vacuum tube K1, common port X flow out, so the disjunction of auxiliary moving contact FG11 can not arcing.When moving to position as shown in the figure, vacuum tube K1 disconnects.Load current IN flows out through tap 5, vacuum tube K2, resistance R, common port X.
After composition graphs 2-3 vacuum tube K1 disconnects interchange half cycle, vacuum tube K1 arc extinction, moving contact G11, determines contact A11 disjunction.Load current IN flows out, until move to position as shown in the figure through tap 5, vacuum tube K2, resistance R, common port X.
Composition graphs 2-4: when moving the position moved to as shown in the figure, vacuum tube K1 connects.At this moment load current IN by tap 4, determine contact A21, moving contact G11, determine contact A31, vacuum tube K1, common port X flow out.Simultaneously at tap 5, vacuum tube K2, resistance R, vacuum tube K1, determine contact A31, moving contact G11, determine contact A21, have a circulation IR to exist between tap 4.By the bridge joint of resistance R, avoid inside transformer coil short, burn out transformer.Determine before contact FA21 closes at auxiliary moving contact FG11 with auxiliary, vacuum tube K2 disconnects.Circulation IR disappears.
Composition graphs 2-5: auxiliary moving contact FG11 with auxiliary determine contact FA21 closed, now can not arcing.Load current IN by tap 4, determine contact A21, moving contact G11, auxiliary moving contact FG11, auxiliaryly determine contact FA21, common port X and flow out, complete the switching of a point of termination process.Vice versa.
Claims (4)
1. the pressure regulation finishing switching final vacuum pipe vacuum on-load operation switch of deactivating, comprise by left moving contact (G11), right moving contact (G12), contact (A11) is determined in upper left, upper right determines contact (A12), contact (A21) is determined in lower-left, contact (A22) is determined in bottom right, leftly determine contact (A31), rightly determine contact (A32), be connected to and leftly determine contact (A31) and right the first vacuum tube (K1) determined between contact (A32), be connected to one upper determine contact and and this is determined contact reverse position one under determine the on load tap changer of the middle part voltage regulating that the second vacuum tube (K2) between contact and resistance (R) form, it is characterized in that: also comprise auxiliary moving contact (FG11), upper assisting determines contact (FA11), lower assisting determines contact (FA21), auxiliary moving contact (FG11) is connected with the moving contact that the second vacuum tube (K2) is connected with resistance (R) by the first conducting strip (GX), upper auxiliary determine contact (FA11) by the second conducting strip (AX1) with or not be not connected the second vacuum tube (K2) with resistance (R) above determine contact and be connected, lower auxiliary determine contact (FA21) by the 3rd conducting strip (AX2) be connected with resistance (R) with the second vacuum tube (K2) determine contact (A21) and be connected down.
2. the pressure regulation finishing switching final vacuum pipe according to claim 1 vacuum on-load operation switch of deactivating, it is characterized in that: upper right is determined contact (A12) and determined to be connected the second vacuum tube (K2) and resistance (R) between contact (A21) with lower-left, auxiliary moving contact (FG11) is connected with right moving contact (G12) by the first conducting strip (GX), upper auxiliary determine contact (FA11) and determine contact (A11) by the second conducting strip (AX1) and upper left and be connected, lower auxiliary determine contact (FA21) and determine contact (A21) by the 3rd conducting strip (AX2) and lower-left and be connected.
3. the pressure regulation finishing switching final vacuum pipe according to claim 1 vacuum on-load operation switch of deactivating, it is characterized in that: upper left is determined contact (A11) and determined to be connected the second vacuum tube (K2) and resistance (R) between contact (A22) with bottom right, auxiliary moving contact (FG11) is connected with left moving contact (G11) by the first conducting strip (GX), upper auxiliary determine contact (FA11) and determine contact (A12) by the second conducting strip (AX1) and upper right and be connected, lower auxiliary determine contact (FA21) and determine contact (A22) by the 3rd conducting strip (AX2) and bottom right and be connected.
4. the pressure regulation finishing switching final vacuum pipe vacuum on-load operation switch of deactivating, comprise by moving contact (G11), above determine contact (A11), determine down contact (A21), in determine contact (A31), common port (X), be connected to the first vacuum tube (K1) determined between contact (A31) and common port (X), be connected to and determine contact (A11) or the lower on load tap changer determining the end pressure regulation that the second vacuum tube (K2) between contact (A21) and common port (X) and resistance (R) form, it is characterized in that: also comprise auxiliary moving contact (FG11), upper assisting determines contact (FA11), lower assisting determines contact (FA21), moving contact (G11) is connected by the first conducting strip (GX) with upper auxiliary moving contact (FG11), upper auxiliary determine contact (FA11) and be connected by the second conducting strip (AX1) with common port (X), lower auxiliary determine contact (FA21) and be connected by the 3rd conducting strip (AX2) with common port (X).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315110.7A CN105304358B (en) | 2014-07-03 | 2014-07-03 | Vacuum tube exits the vacuum on-load operation switch of work after pressure regulation finishing switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315110.7A CN105304358B (en) | 2014-07-03 | 2014-07-03 | Vacuum tube exits the vacuum on-load operation switch of work after pressure regulation finishing switching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105304358A true CN105304358A (en) | 2016-02-03 |
| CN105304358B CN105304358B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410315110.7A Expired - Fee Related CN105304358B (en) | 2014-07-03 | 2014-07-03 | Vacuum tube exits the vacuum on-load operation switch of work after pressure regulation finishing switching |
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| Country | Link |
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| CN (1) | CN105304358B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3555404A (en) * | 1968-07-05 | 1971-01-12 | Reinhausen Maschf Scheubeck | Tap-changing transformer system including vacuum switch units |
| JPS6047405A (en) * | 1983-08-25 | 1985-03-14 | Toshiba Corp | On-load tap changer |
| CN2278288Y (en) * | 1996-06-26 | 1998-04-08 | 国营双城有载分接开关厂 | Dry type vacuum load dividing intermediate voltage-regulating switch |
| BG65708B1 (en) * | 2004-03-23 | 2009-07-31 | "Хюндай Хеви Индъстрис Ко. България" Ад | Power switch with vacuum arc-damping chambers for step voltage regulator |
| CN201430078Y (en) * | 2009-06-12 | 2010-03-24 | 上海华明电力设备制造有限公司 | Changeover mechanism of vacuum on-load tapping switch |
| CN202178175U (en) * | 2011-06-15 | 2012-03-28 | 上海华明电力设备集团有限公司 | Vacuum on-load tap-changer double-vacuum-tube transition circuit |
| CN102832075A (en) * | 2011-06-15 | 2012-12-19 | 上海华明电力设备集团有限公司 | Double vacuum tube transition circuit of vacuum on-load tap-changer |
| CN204067083U (en) * | 2014-07-03 | 2014-12-31 | 刘洪军 | The vacuum on-load operation switch that pressure regulation finishing switching final vacuum pipe is deactivated |
-
2014
- 2014-07-03 CN CN201410315110.7A patent/CN105304358B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3555404A (en) * | 1968-07-05 | 1971-01-12 | Reinhausen Maschf Scheubeck | Tap-changing transformer system including vacuum switch units |
| JPS6047405A (en) * | 1983-08-25 | 1985-03-14 | Toshiba Corp | On-load tap changer |
| CN2278288Y (en) * | 1996-06-26 | 1998-04-08 | 国营双城有载分接开关厂 | Dry type vacuum load dividing intermediate voltage-regulating switch |
| BG65708B1 (en) * | 2004-03-23 | 2009-07-31 | "Хюндай Хеви Индъстрис Ко. България" Ад | Power switch with vacuum arc-damping chambers for step voltage regulator |
| CN201430078Y (en) * | 2009-06-12 | 2010-03-24 | 上海华明电力设备制造有限公司 | Changeover mechanism of vacuum on-load tapping switch |
| CN202178175U (en) * | 2011-06-15 | 2012-03-28 | 上海华明电力设备集团有限公司 | Vacuum on-load tap-changer double-vacuum-tube transition circuit |
| CN102832075A (en) * | 2011-06-15 | 2012-12-19 | 上海华明电力设备集团有限公司 | Double vacuum tube transition circuit of vacuum on-load tap-changer |
| CN204067083U (en) * | 2014-07-03 | 2014-12-31 | 刘洪军 | The vacuum on-load operation switch that pressure regulation finishing switching final vacuum pipe is deactivated |
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| CN105304358B (en) | 2017-05-31 |
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