CN1439165A - Combination of a vacuum interruption device and oil-filled transformer - Google Patents

Combination of a vacuum interruption device and oil-filled transformer Download PDF

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Publication number
CN1439165A
CN1439165A CN01809604A CN01809604A CN1439165A CN 1439165 A CN1439165 A CN 1439165A CN 01809604 A CN01809604 A CN 01809604A CN 01809604 A CN01809604 A CN 01809604A CN 1439165 A CN1439165 A CN 1439165A
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CN
China
Prior art keywords
transformer
electric contact
interrupting
magnetic force
force actuator
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Pending
Application number
CN01809604A
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Chinese (zh)
Inventor
威廉J·布克
戴维A·赖因克
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ABB Inc USA
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ABB Power T&D Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Power T&D Co Inc filed Critical ABB Power T&D Co Inc
Publication of CN1439165A publication Critical patent/CN1439165A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Transformer Cooling (AREA)
  • Gas-Insulated Switchgears (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The present invention describes a device (100) and method for interrupting electrical power to an electrical transformer winding (103-105) or to an electrical distribution system downstream from the device (100). The device (100) comprises at least one electrical transformer winding (103-105) and at least one interrupting device (106-108) coupled to the electrical transformer winding (103-105). The interrupting device (106) includes a vacuum enclosure (310). Contacts (401,402) located in the vacuum enclosure (310) are connected in series with the electrical transformer winding (103) and are movable between an open and a closed position. A linear shaft (311), coupled to one of the contacts (401,402) and movable by a magnetic actuator (306), cause the contacts (401) to move from the closed position to the open position. The magnetic actuator (306) is activated by an input signal, which may be an electrical current or an electrical voltage.

Description

The combination of vacuum break device and oil-immersed type transformer
Technical field of the present invention:
The present invention relates to be used for to interrupt to device for transformer or send the system and method for the electric current that the transmission system of electricity provides by device for transformer.More particularly, the present invention relates to device for transformer and being used to and control combination the vacuum break device of the magnetic drive device for transformer power supply or by the device for transformer power supply.
Prior art of the present invention
In general, the power breakdown device provides overload protection to various dissimilar loads.When interrupting giving the electric current of inductive load, often between the contact that separates of interrupting device, form electric arc.According to specific application, arc energy damages parts on every side.In the environment of transmitting transformer, damage the winding of transformer by the arc energy that its nearest interrupting device causes, thereby cause that transformer breaks down or thoroughly inefficacy.
In transmitting transformer, load break switch and common fusible link use dielectric fluid in case during current interruptions extinguish arcs.Specifically, the iron core of transformer and winding and interrupting device (for example, switch, circuit breaker or fusible link) all are immersed in the storage tank of dielectric fluid.For example, when current interrupt device because overload or fault condition when disconnecting electric current to Transformer Winding, consequent electric arc by around dielectric fluid extinguish.In the current interrupt device that is positioned at the transmitting transformer the inside is not the winding that is used for protecting transformer, but is used for protecting the occasion in the downstream part of passing through the distribution system of transformer housing when (that is, " loop (loop-thru) " connects) like this equally.In history, dielectric fluid comprises mineral oil, silicones and sulphur hexafluoride (gas).
Though these are-extinguishing fluids are that effectively their effectiveness often reduces as time goes by avoiding aspect the injury of the parts of distribution transformer.The minimizing of this ability result from fluid insulating properties since it must extinguish many electric arcs and depletion.Therefore, be dielectric fluid or be that whole voltage transformer system must be replaced by certain time interval, thus the system's downtime that causes the expense costliness.Another restriction of these dielectric fluids is the gas that is produced in the arc extinguishing process.Consequent gas increases system pressure, often needs the ventilation of transformer housing.
So whether a kind of system and method that interrupts the electric current in the device for transformer under the situation that does not or not cause electric arc inside dielectric fluid be provided is favourable.
General introduction of the present invention
The present invention describes a kind of apparatus and method that are used for interrupting the apparatus and method of powering to Transformer Winding or interrupt giving the transmission system power supply in described device downstream.This device comprises the interrupting device that at least one Transformer Winding and at least one and Transformer Winding are coupled.Interrupting device comprises vacuum chamber.Contact in vacuum chamber and Transformer Winding are connected in series and can move between the open and close position.The linear axes that moves with coupling of one of contact and available magnetic force actuator will make the contact move to open position from make position.Magnetic force actuator encourages with input signal, and this input signal may be that electric current also may be a voltage.By interruptive current in vacuum chamber, the present invention reduces the infringement to voltage transformer system that the electric arc by final generation causes under the situation that dielectric fluid is not had extensive damage.
Brief Description Of Drawings
Other features of the present invention will be from becoming more obvious below in conjunction with accompanying drawing to the detailed description of the preferred embodiments of the invention, wherein:
Fig. 1 is the perspective view according to distribution transformer apparatus of the present invention;
Fig. 2 is the zoomed-in view of the perspective view of Fig. 1;
Fig. 3 is the cutaway view according to vacuum break device of the present invention;
Fig. 4 A is the cutaway view that the vacuum break device is in make position; And
Fig. 4 B is the cutaway view that the vacuum break device is in the open position.
Detailed description of the present invention
Fig. 1 is the perspective view according to the three-phase power transmission transformer of installing on the backing plate of the present invention 100.Transmitting transformer 100 may be any suitable transformer, for example, is used for a higher pressure (for example, 7200 volts) to be reduced to the transformer of lower voltage (for example, 220 volts or 120 volts).Transmitting transformer 100 comprises a storage tank 101.Storage tank 101 can have any suitable structure, for example seal of weld seam engaged and sealing parts.Transmitting transformer 100 shows in Fig. 1, wherein for clear the top has been taken away, yet people is to be appreciated that transmitting transformer 100 every limits all seal.
Storage tank 101 comprises fluid pool 102.Fluid pool 102 can comprise that any traditional being used for insulate and cool off the mineral oil that is immersed in the Transformer Winding 103-105 in the storage tank 101, silicone oil, sulphur hexafluoride or similar material.Vacuum break device 106-108 is installed in storage tank 101 inside and is immersed in the fluid pool 102.One phase of each vacuum break device 106-108 switch three-phase power transmission transformer 100.Busbar 109-111 extends to the front 112 of transmitting transformer 100 respectively from vacuum break device 106-108.Busbar 109-111 can be solid metal rod or cable/wire devices.Each busbar 109-111 is attached to respectively on the bushing 113-115.The electric power of high pressure input enters transmitting transformer 100 through bushing 113-115.Then, busbar 109-111 is transported to interrupting device 106-108 to the high pressure input electric power from bushing 113-115 respectively.If vacuum break device 106-108 is in closure state (further discussing as reference Fig. 4 A), the electric power of high pressure input then offers the winding 103-105 of transmitting transformer 100.On the other hand, if vacuum break device 106-108 is in the winding 103-105 that the electric power of open mode (discussing as reference Fig. 4 B) high pressure input is prohibited from entering transmitting transformer 100.
As an alternative, transmitting transformer 100 and vacuum break device 106-108 may be used as the use of " loop " circuit teasel root device.In this case, transmitting transformer 100 and vacuum break device 106-108 provide protection to the electric current that does not enter transformer 100 by winding 103-105 and exist.Connect in order to constitute " loop ", transmitting transformer 100 uses high pressure input sleeve pipe 113-115 and the corresponding similar high pressure output of cover sleeve pipe (not shown).All bushings all are installed in the front 112 of transmitting transformer 100.Electric power enters high pressure input sleeve pipe 113-115 and is transported to that cover high pressure output sleeve pipe (not shown) through vacuum break device 106-108.Connection between vacuum break device 106-108 and that cover high pressure output sleeve pipe (not shown) may and vacuum break device 106-108 and winding 103-105 between connect existence.So this cover high pressure output sleeve pipe can be coupled with the remainder of the distribution system that is positioned at transmitting transformer 100 downstreams.Like this, 106 protections of vacuum break device and switch are by the downstream part of the distribution system of transmitting transformer 100 rather than winding 103-105 feed.
Fig. 2 is the zoomed-in view of the perspective view of Fig. 1.Fig. 2 provides the bigger details of the vacuum break device 106 in the transmitting transformer 100.As shown in Figure 2, vacuum break device 106 is connected on the rear surface 203 of storage tank 101 inside by headboard 201 and bottom end plate 202.Headboard 201 and bottom end plate 202 are with vacuum break device 106 and be electrically connected insulation.Busbar 109 extends to the front 112 of transmitting transformer 100 from vacuum break device 106.Busbar 204 extends to Transformer Winding 103 from vacuum break device 106.
When operation, high-voltage power enters sleeve pipe 113 (as shown in Figure 1), passes through busbar 109, vacuum break device 106, busbar 204, enters Transformer Winding 103.Yet if vacuum break device 106 is opened, high-voltage power will be prohibited from entering the winding 103 of transformer, therefore not give transmitting transformer 100 power supplies.
Fig. 3 is the cutaway view according to vacuum break device 106 of the present invention, and it shows the operation of vacuum break device 106 in more detail.As shown in Figure 3, vacuum break device 106 comprises the spring 301 that is connected on the magnetic force actuator 306.Magnetic force actuator 306 is connected on the control device 302 of remotely stimulating magnetic force actuator 306.Curtage instrument transformer 312 is coupled with input current 313 between control device 302 and busbar 109.If selected is current transformer, it may be the well-known ring current transformers of those skilled in the art so, and is installed in the front 112 (as shown in Figure 1) of transmitting transformer 100 round high pressure input sleeve pipe 113.On the other hand, if selected be voltage transformer, it may be installed in storage tank 101 inside (as shown in Figure 1) so.Magnetic force actuator 306 is connected on the housing 307.Headboard 201 is between magnetic force actuator 306 and housing 307, and bottom end plate 202 is attached to the opposite end of housing 307.Headboard 201 and bottom end plate 202 allow vacuum break device 106 is installed on the transmitting transformer 100.
Magnetic force actuator 306 and push rod 303 mechanical couplings that insulate.Insulation push rod 303 provides dielectric gap between vacuum teasel root device 310 and magnetic force actuator 306.Shifting axle 311 and 303 couplings of insulation push rod.Flexible lead wire support 304 is connected with shifting axle 311.Flexible connector 308 and flexible down-lead bracket 304 couplings.Flexible connector 308 passes housing 307 and is coupled with busbar 109 by terminal 309.Flexible connector 308 and flexible lead wire support 304 are that the electrical ties between movable part (that is, shifting axle 311) and the static part (that is, busbar 109) creates conditions.Shifting axle 311 passes flexible lead wire support 304 and enters vacuum teasel root device 310.The metal bellows (not shown) seals vacuum teasel root device 310 when the freedom of movement that allows shifting axle 311 along with insulation push rod 303 moves.Vacuum teasel root device 310 is received on the busbar 204.Then, busbar 204 can be received on Transformer Winding 103, high pressure output sleeve pipe 315 or both.All following parts all are positioned within the housing 307: insulation push rod 303, flexible lead wire support 304, flexible connector 308, vacuum teasel root device 310 and shifting axle 311.
In operation, when vacuum teasel root device 310 was in make position, busbar 109 conducted high-voltage power by terminal 309 on flexible connector 308.Then, flexible connector 308 is transmitted to high-voltage power on the busbar 204 through vacuum teasel root device 310.Busbar 204 is transmitted to high-voltage power on Transformer Winding 103, high pressure output sleeve pipe 315 or both.When overload or fault condition took place, this condition was discovered by curtage instrument transformer 312.The output of curtage instrument transformer 312 is by control device 302 monitorings.Based on the logic of programming in control device 302, when control device 302 was noticed overload condition from curtage instrument transformer 312, signal 314 was sent to magnetic force actuator 306.Signal 314 can be based on the signal of curtage.Then, further discuss as reference Fig. 4 A and 4B, signal 314 causes that magnetic force actuator 306 opens or closes vacuum teasel root device 310.
Fig. 4 A and 4B are respectively at the cutaway view of the vacuum teasel root device 310 of make position and open position.Shown in Fig. 4 A and 4B, vacuum teasel root device 310 comprises and the shifting axle 311 of current collector 401 couplings and the rest(ing) contact 402 that is coupled with busbar 204.Current collector 401 is freely moving on the downward direction of representing with arrow 404 and on the direction of representing with arrow 405 that makes progress.Vacuum teasel root device 310 is to comprise evacuated inner 403 sealing device.Evacuated inner 403 of vacuum teasel root device 310 provides the environment that can be controlled at the electric arc that forms between current collector 401 and the rest(ing) contact 402.Vacuum teasel root device 310 can be the vacuum teasel root device of buying on the market, for example, and the parno.VG5 that ABB makes.Usually discuss as reference Fig. 3, when perceiving the electric current overload condition with the curtage instrument transformer 312 of control device 302 couplings, insulation push rod 303 is moved, thereby vacuum teasel root device 310 is opened and is forbidden that electric current enters Transformer Winding 103.
Shown in Fig. 4 A, when signal 314 controlled devices 302 send with closed vacuum teasel root device 310, therefore magnetic force actuator 306 moves shifting axle 311, compression spring 301 (as shown in Figure 3) by downward direction 404, and current collector 401 is moved to rest(ing) contact 402 and be connected.This action is finished between busbar 109 and the Transformer Winding 103 or between busbar 108 and high pressure output sleeve pipe 315 or both circuit.Rest(ing) contact 402 and current collector 401 are installed in powerful permanent magnet (not shown) that magnetic force actuator 306 (as shown in Figure 3) the inside comprises keep together (that is closure).
Fig. 4 B graphic extension is when magnetic force actuator 306 is perceived the electric current overload condition or receive the signal that control device 302 sends when magnetic force actuator 306 and open vacuum teasel root device 310 time institute's occurrence.At first, signal 314 has and " closure " polarity that current signal is opposite of discussing with reference to Fig. 4 A.In addition, therefore the pressure that signal 314 numerically is enough to temporarily to offset the intensity of permanent magnet (not shown) and alleviates spring 301 separate rest(ing) contact 402 and current collector 401.When insulate push rod 303 and shifting axle 311 moved by the direction 405 that makes progress, therefore the connection that vacuum teasel root device 310 disconnects between busbars 204 and the busbar 109 was interrupted the electric current of Transformer Winding 103 and/or high pressure output sleeve pipe 315 mobile.Rest(ing) contact 402 and current collector 401 are remained on the position of opening by the permanent magnet (not shown) of magnetic force actuator 306.
As an alternative, in order to open vacuum teasel root device 310, magnetic force actuator 306 can be energized by control device 302, and irrelevant with overload condition.Like this, control device 302 electric current that just can be used for specially interrupting to Transformer Winding 103 or high pressure output sleeve pipe 315 flows.For example, for the distribution system of protecting Transformer Winding 103 or downstream is avoided the electric current overload condition, perhaps the purpose in order to test and to safeguard can be implemented such interrupt event.In one embodiment, can break the in a vacuum safe distance of device 106 of control device 302 carries out long-range electricity operation.In case interrupt condition is cancelled, magnetic force actuator 306 moves current collector 401 with shifting axle 311 on downward direction 404, therefore the closing of circuit between busbar 204 and the Transformer Winding 103, shown in Fig. 4 A.
Though the present invention is described specific embodiment, many other variation and correction and other purposes will become obvious for the people who is familiar with this technology.For example, though the present invention is described in the environment of the three-phase distribution voltage transformer system installed on backing plate, people are to be appreciated that the present invention can be used in the voltage transformer system of any kind, for example, comprises single-phase power transformer.In addition, though the present invention has been described as using in being full of the transformer of fluid, people are to be appreciated that it also can use in the transformer of drying.So preferably the present invention is not subjected to the restriction of specific announcement herein, but only be subjected to the restriction of claims.

Claims (26)

1. device for transformer comprises:
At least one Transformer Winding; And
The interrupting device that at least one and described at least one Transformer Winding are coupled, wherein said interrupting device comprises vacuum chamber.
2. according to the device of claim 1, wherein said interrupting device further comprises the electric contact that is connected in series with described Transformer Winding, wherein said electric contact resides in described vacuum chamber the inside, and described electric contact can move between the open and close position.
3. according to the device of claim 2, wherein said interrupting device further comprises the linear axes that available magnetic force actuator moves, one of wherein said linear axes and described electric contact be coupling like this, moves described linear axes with the described magnetic force actuator of applying and will cause that described electric contact moves to described open position from described make position.
4. according to the device of claim 3, wherein said magnetic force actuator encourages with input signal.
5. according to the device of claim 4, wherein said input signal is an electric current.
6. according to the device of claim 4, wherein said input signal is a voltage.
7. according to the device of claim 1, wherein said device for transformer comprises the housing that is full of fluid, and wherein said interrupting device is immersed in the housing the inside that is full of fluid.
8. a method that is used for interrupting to the electric power of device for transformer comprises the steps:
Described electric power is offered described device for transformer;
Measure described electric power; And
When described electric power surpasses predetermined value, in vacuum plant, described electric power and described device for transformer are disconnected.
9. method according to Claim 8 further comprises according to control signal described electric power and described device for transformer are disconnected.
10. method according to Claim 8, wherein said device for transformer comprises the housing that is full of fluid.
11. a device for transformer comprises: at least one input; At least one output; And being coupling at least one interrupting device between described at least one input and described at least one output, wherein said interrupting device comprises vacuum chamber.
12. device according to claim 11, wherein said interrupting device further comprise first electric contact that is connected in series with described input and with described output second electric contact that is connected in series, wherein said electric contact resides in described vacuum chamber the inside, and described electric contact can move between the open and close position.
13. device according to claim 12, wherein said interrupting device further comprises the linear axes that available magnetic force actuator moves, wherein said linear axes and described first electric contact are coupled like this, move described linear axes with the described magnetic force actuator of applying and will cause that described first electric contact is connected with described second electric contact.
14. according to the device of claim 13, wherein said magnetic force actuator encourages with input signal.
15. according to the device of claim 14, wherein said input signal is an electric current.
16. according to the device of claim 14, wherein said input signal is a voltage.
17. according to the device of claim 11, wherein said device for transformer comprises the housing that is full of fluid, and wherein said interrupting device is immersed in the described housing the inside that is full of fluid.
18. a transmitting transformer device comprises: at least one Transformer Winding; And the interrupting device of at least one and the coupling of described at least one Transformer Winding, wherein said interrupting device comprises the linear axes that available magnetic force actuator moves, and wherein said linear axes and the coupling like this of one of a pair of electric contact that is positioned at vacuum chamber the inside, move described linear axes with the described magnetic force actuator of applying and will cause that the described a pair of electric contact that is connected in series with described Transformer Winding opens and interrupt described Transformer Winding power supply.
19. according to the device of claim 18, wherein said magnetic force actuator is controlled by a control device of measuring electric current and/or voltage in described device for transformer the inside.
20. a distribution system comprises: the transmitting transformer device; At least one input; At least one output; And not only be coupling between described at least one input and described at least one output, and being coupling at least one interrupting device between described input and the described transmitting transformer, wherein said interrupting device comprises vacuum chamber.
21. device according to claim 20, wherein said interrupting device further comprises first electric contact that is connected in series with described input, with second electric contact that is connected in series with described output, wherein said electric contact resides in described vacuum chamber the inside, and wherein said electric contact can move between the open and close position.
22. device according to claim 21, wherein said interrupting device further comprises the linear axes that available magnetic force actuator moves, wherein said linear axes and described first electric contact are coupled like this, so that described magnetic force actuator moves described linear axes and will cause that described first electric contact is connected with described second electric contact.
23. according to the device of claim 22, wherein said magnetic force actuator encourages with input signal.
24. according to the device of claim 23, wherein said input signal is an electric current.
25. according to the device of claim 23, wherein said input signal is a voltage.
26. according to the device of claim 11, wherein said device for transformer comprises the housing that is full of fluid, and wherein said interrupting device is immersed in the described housing the inside that is full of fluid.
CN01809604A 2000-05-23 2001-05-21 Combination of a vacuum interruption device and oil-filled transformer Pending CN1439165A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57697600A 2000-05-23 2000-05-23
US09/576,976 2000-05-23

Publications (1)

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CN1439165A true CN1439165A (en) 2003-08-27

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CN01809604A Pending CN1439165A (en) 2000-05-23 2001-05-21 Combination of a vacuum interruption device and oil-filled transformer

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CN (1) CN1439165A (en)
AU (1) AU2001268746A1 (en)
BR (1) BR0111026A (en)
CA (1) CA2410703A1 (en)
DE (1) DE10291282T5 (en)
MX (1) MXPA02011566A (en)
WO (1) WO2001091151A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103959420A (en) * 2011-11-29 2014-07-30 Abb技术有限公司 A multiphase medium voltage vacuum contactor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005089069A2 (en) * 2004-03-23 2005-09-29 Samrakshana Electricals Ltd. A circuit breaker for using as overload cut out in oil filled transformers
EP3379555A1 (en) 2017-03-21 2018-09-26 ABB Schweiz AG A disconnecting system for current interruption in a transformer

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Publication number Priority date Publication date Assignee Title
JPS4945434B1 (en) * 1968-11-22 1974-12-04
US3958156A (en) * 1974-10-21 1976-05-18 Allis-Chalmers Corporation Vacuum interrupter metal-clad switchgear vertically elevatable within compartment
US4663504A (en) * 1983-04-11 1987-05-05 Raychem Corporation Load break switch
US5175403A (en) * 1991-08-22 1992-12-29 Cooper Power Systems, Inc. Recloser means for reclosing interrupted high voltage electric circuit means
US5387772A (en) * 1993-11-01 1995-02-07 Cooper Industries, Inc. Vacuum switch
US5597992A (en) * 1994-12-09 1997-01-28 Cooper Industries, Inc. Current interchange for vacuum capacitor switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103959420A (en) * 2011-11-29 2014-07-30 Abb技术有限公司 A multiphase medium voltage vacuum contactor

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DE10291282T5 (en) 2004-04-29
BR0111026A (en) 2003-06-17
WO2001091151A1 (en) 2001-11-29
AU2001268746A1 (en) 2001-12-03
CA2410703A1 (en) 2001-11-29
MXPA02011566A (en) 2003-06-06

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