CN201408698Y - Pulsed power type permanent magnet linear motor actuator of high-voltage circuit breaker - Google Patents
Pulsed power type permanent magnet linear motor actuator of high-voltage circuit breaker Download PDFInfo
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- CN201408698Y CN201408698Y CN2009200140124U CN200920014012U CN201408698Y CN 201408698 Y CN201408698 Y CN 201408698Y CN 2009200140124 U CN2009200140124 U CN 2009200140124U CN 200920014012 U CN200920014012 U CN 200920014012U CN 201408698 Y CN201408698 Y CN 201408698Y
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- permanent magnet
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- linear motor
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Abstract
The utility model relates to a pulsed power type permanent magnet linear motor actuator of a high-voltage circuit breaker, which belongs to the technical field of the high-voltage circuit breaker actuator in transmission and transformation equipment, and comprises a primary iron core, secondary iron cores, motor spindles and armature windings, wherein two symmetrical secondary iron cores are arranged in the primary iron core, and a magnet insulating material is arranged between the two secondary iron cores; one end of each secondary iron core is connected with a motor spindle, and the armaturewindings are embedded in the secondary iron cores; and the magnet insulating material is arranged between the end surfaces of the primary iron core and the secondary iron cores, and a permanent magnet is arranged between the side of each secondary iron core and the primary iron core. The utility mode has the advantages that: when the structure of the actuator is designed, the particularity of theopening and closing position is fully taken into account, and thereby, the magnet insulating material is particularly designed, and a permanent magnet block is placed on the primary iron core; and simultaneously, in order to produce a larger electromagnetic thrust, the start-up time is short, and thereby, the higher dynamic characteristic requirements can be achieved, and the characteristic requirements of the circuit breaker can be well matched.
Description
Technical field
The utility model belongs in the power transmission and transforming equipment about the technical field of high-voltage breaker operation mechanism, relates to a kind of pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker.
Background technology
Primary cut-out is an extremely important switchgear in the electric power system, and its operation quality directly concerns stability, the reliability of whole system; And the high-voltage breaker operation mechanism important part that is it, it not only will guarantee the reliable in action that circuit breaker is long-term, and will satisfy the requirement of arc quenching characteristic to operating mechanism, so whether the design of high-voltage breaker operation mechanism rationally plays crucial effects to whole electrical network.
Electric power system constantly develops to high voltage, remote, big capacity direction, and when improving economy, safe and reliable problem also surfaces; Quantitative assessment more and more is subject to people's attention with the reliability of improving electric power system.Therefore be necessary to develop the requirement that a kind of novel operating mechanism satisfies the power system stability reliable direction.
The tradition operating mechanism mainly comprises spring operating mechanism, hydraulic actuating mechanism, hydraulic pressure spring operating mechanism etc., these operating mechanisms are owing to exist many-sided shortcomings such as parts are many, controllability is relatively poor, complex structure, cause its frequency ratio that in running, breaks down higher, so the development of novel operating mechanism just seems particularly urgent and important with exploitation.
The utility model content
In order to solve defective and deficiencies such as existing operating mechanism complex structure, poor controllability, the utility model provides a kind of pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker.
For pulse power type linear electric motors, the motor of the type is mainly used in short occasion of operating time, belong to short time duty, big capacitances to supply power is adopted in its power supply, electric current presents pulse wave form, and changes comparatively fast, so moment produces a bigger electromagnetic push, its power also is to present this trend, so the type motor is specially adapted to the divide-shut brake occasion of primary cut-out.
The technical solution adopted in the utility model is: comprise elementary iron core, secondary iron core, electric machine main shaft and armature winding, be provided with the secondary iron core of two symmetries in the elementary iron core, be provided with NULL between two secondary iron cores, an every secondary termination unshakable in one's determination has an electric machine main shaft, embeds armature winding in the secondary iron core; Be provided with NULL between elementary iron core and the secondary end face of iron core, be provided with permanent magnet between every secondary side unshakable in one's determination and the elementary iron core.Described permanent magnet is placed on the elementary iron core, is provided with NULL between the permanent magnet.
A kind of optimal way of the present utility model: each secondary iron core respectively is provided with a permanent magnet in the side up and down.The magnetic induction line of secondary upper side permanent magnet unshakable in one's determination is along 90 ° in vertical-horizontal direction; The magnetic induction line of secondary downside permanent magnet unshakable in one's determination is along vertical-horizontal direction-90 °.
Described permanent magnet thickness is between 6～10mm scope.Every secondary iron core is provided with a permanent magnet in the side up and down.Secondary upper side permanent magnet unshakable in one's determination all is to be vertical 90 ° of directions (promptly the direction by N utmost point sensing S is 90 °); Secondary downside permanent magnet unshakable in one's determination is-90 ° of directions.Between 6～10mm scope, width requires relevant with the desired load-side characteristic of length and design permanent magnet thickness greatly.
The main shaft of this operating mechanism is connected as a whole mover part as sports system with the moving contact of primary cut-out by transmission mechanism.Pulse power type permanent magnet linear motor (PMLM) operating mechanism is summarized and is comprised mover and stator two large divisions; Wherein the mover part partly is made up of symmetry iron core and an intermediate insulation of two flutings; Stator partly comprises the insulation of magnetic conduction part, permanent magnets, divide-shut brake confining force correspondence; Also has mover and stator institute unshakable in one's determination coupling part---bearing in addition.The mover core fluting, winding is inlayed in the inside; Main field is set up by permanent magnet, feed direct current in the armature winding in mover core, the electrical conductor effect that is subjected to power in magnetic field just drives whole mover and partly moves like this, realizes breaking-closing operating thereby drive the moving contact of breaker motion by linkage.
The utility model implementation procedure: the main shaft of operating mechanism is connected by connecting rod with the moving contact of primary cut-out, directly drives the motion of circuit breaker when the operating mechanism side moves up and down, so there is not hysteresis quality on the time.In the divide-shut brake position, this operating mechanism has added left and right sides NULL especially when design, and purpose is to satisfy its needed divide-shut brake confining force by regulating its thickness, makes it to maintain the divide-shut brake position; Power supply adopts electric capacity to power, and makes to produce big transient current in the armature winding, because the existence of permanent magnet, realizes breaking-closing operating thereby the interaction in two magnetic fields produces moment bigger electromagnetic push according to Ampere's law.
Advantage of the present utility model: operating mechanism structure of the present utility model belongs to the design at high pressure field circuit breaker, so when design, take into full account the particularity of divide-shut brake position, designed NULL especially, comprise separating brake NULL (be used to adjust the separating brake confining force and add) and combined floodgate NULL (be used to adjust closing retention force and add), as shown in accompanying drawing 2, and consider the possibility of loss of excitation danger, permanent magnets is placed on the static elementary iron core, simultaneously in order to produce bigger electromagnetic push, the direct current that provides for electric capacity that feeds in the armature winding, the parallel branch number is 4, purpose is to guarantee enough big electric current, wherein windings in series is formed a branch road in three grooves, and resistance is 0.198 Ω, after conductor is together in parallel, resistance diminishes, help like this reducing capacitances to supply power voltage, dynamic response is very fast, thus make whole design be based upon simple and multiple functional on.The utility model overcome that traditional operating mechanism transmission mechanism complexity, parts are many, dynamic response is slow, shortcoming such as big and uncontrollable takes up room, the Ampere force that directly utilizes electric current to be subjected in magnetic field is used for realizing divide-shut brake, and operation principle is simple and reliable; Mechanism is two parts Winding Design up and down, has increased the starting electromagnetic push, and can produce acceleration very within a short period of time, realizes the quick acting of circuit breaker; The magnetic attraction that directly utilizes permanent magnet to produce according to the Ma Shi formula in the divide-shut brake position makes circuit breaker maintain the divide-shut brake position, has simplified mechanism; Motor adopts capacitances to supply power, and instantaneous power is big; Altitude measurement is reliable, and movement travel is big and controlled; Starting time is little, can reach higher dynamic characteristic requirement, well cooperates the circuit breaker characteristic requirement.
Above owing to having, make pulse power type permanent magnet linear motor (PMLM) operating mechanism that the bigger dynamicthrust that rises can also be provided except reliable and stable work; And reduced complicated transmission mechanism, and the quality of mechanism is greatly reduced, energy loss is little, has improved efficient; Also improved simultaneously the precision and the reliability of whole device, it is controlled to have high response and high-precision characteristics and a motion process, satisfies the intelligent requirements in the current power system.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the schematic diagram of pulse power type permanent magnet linear motor (PMLM) operating mechanism among a kind of embodiment of the utility model;
Fig. 3 is magnetic flux path of the present utility model and current trend figure;
Fig. 4 is winding distributor circuit figure of the present utility model;
Fig. 5 is the equivalent circuit diagram of a kind of embodiment of the utility model,
The time dependent simulation result figure of the displacement of a kind of embodiment of Fig. 6 the utility model
The velocity varies with time simulation result figure of a kind of embodiment of Fig. 7 the utility model;
The pulse power curve chart of a kind of embodiment of Fig. 8 the utility model.
Among the figure: 1-fixed contact, 2-moving contact, 3-connecting rod, 4-pulse power type permanent-magnetism linear motor 5-electric machine main shaft, 6-combined floodgate NULL, the elementary iron core of 7-, 8-armature winding, 9-permanent magnet one, 10-level be unshakable in one's determination, 11-level NULL unshakable in one's determination, 12-permanent magnet interval magnetic material, 13-permanent magnet two, 14-separating brake NULL, 15-permanent magnet three, 16-permanent magnet four, 17-current flowing path, 18-magnetic flux path.
Embodiment
In conjunction with the accompanying drawings the utility model is described further:
Fig. 1 is a structural representation, with 126kV SF
6Circuit breaker is that example designs, and it is 21000N that arc control device require pulse power type permanent magnet linear motor (PMLM) operating mechanism that the separating brake electromagnetic push is provided, and opening velocity is 4.6m/s; And its electromagnetic push is 15000N when closing a floodgate, and closing speed is 1.4～1.7m/s; According to this model SF
6The requirement of circuit breaker side, the utility model have designed this pulse power type permanent magnet linear motor (PMLM) operating mechanism.
The utility model SF6 pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker, wherein 1 is fixed contact, 2 is moving contact, 3 is connecting rod, 4 is pulse power type permanent-magnetism linear motor, and the electromagnetic push that motor produced connects the breaking-closing operating of realizing circuit breaker by the moving contact of electric machine main shaft and connecting rod and circuit breaker.
The structure of the utility model device: permanent-magnetism linear motor adopts the platypelloid type structure, it is along the profile of center line as shown in Figure 2: 5 is electric machine main shaft, come to link together by it with circuit breaker, the structure chart of pulse power type permanent magnet linear motor (PMLM) operating mechanism is as shown in Figure 2: whole device adopts the platypelloid type structure, elementary unshakable in one's determination 7 with secondary unshakable in one's determination 10 and permanent magnet constitute whole magnetic flux and become a closed-loop path, elementary iron core becomes shaped as frame by silicon steel plate stacking, be provided with secondary unshakable in one's determination 10 of two symmetries among elementary unshakable in one's determination 7 the shaped as frame, be provided with NULL 11 between two secondary unshakable in one's determination 10, every secondary 10 1 terminations unshakable in one's determination have an electric machine main shaft 5, embed armature winding 8 in secondary unshakable in one's determination 10; Elementary unshakable in one's determination 7 and secondary 10 end faces unshakable in one's determination between be provided with NULL, wherein be provided with between first secondary end face of iron core and the elementary end face of iron core between 6, the second secondary end face of iron core of combined floodgate NULL and the elementary end face of iron core and be provided with separating brake NULL 14.Be provided with permanent magnet between every secondary side unshakable in one's determination and the elementary iron core.Described permanent magnet is placed on the elementary iron core.Wherein be provided with permanent magnet 1 between first secondary upper side unshakable in one's determination and the elementary iron core, be provided with permanent magnet 4 16 between downside and the elementary iron core; Be provided with permanent magnet 2 13 between second secondary upper side unshakable in one's determination and the elementary iron core, be provided with permanent magnet 3 15 between downside and the elementary iron core; Be provided with NULL between the permanent magnet, promptly be provided with permanent magnet magnetic material 12 at interval between permanent magnet one and the permanent magnet two.
Magnetic flux path of the present utility model such as accompanying drawing 3 (vertical cross-section diagram), when armature winding is switched on, because the existence of magnetic field of permanent magnet, according to Ampere's law, winding is subjected to the effect of horizontal direction pulse electromagnetic thrust, because winding is embedded in secondary unshakable in one's determination 10 the groove, therefore drive whole secondary generation horizontal movement, electric machine main shaft 5 links together by connecting rod 3 and moving contact of breaker and realizes the breaking-closing operating of circuit breaker like this.Current flowing path 17, magnetic flux path 18.When circuit breaker arrived combined floodgate or separating brake position, the armature winding electric current was zero, and its confining force is to produce by the suction of permanent magnet to iron core, finds suitable insulation to make it to meet the requirements of suction by calculating.
Fig. 4 is the winding distribution diagram, and wherein (1), (2), (3), (4), (5), (6) are a series arm; (7), (8), (9), (10), (11), (12) are a series arm; (13), (14), (15), (16), (17), (18) are a series arm; (19), (20), (21), (22), (23), (24) are a series arm.Fig. 5 is equivalent circuit diagram, and as can be seen from the figure, whole winding loop is divided into four branch roads, helps to reduce resistance and inductance like this, is realizing that capacitance voltage is less, and current ratio is bigger under the better dynamic characteristic prerequisite.
Fig. 6 is the time dependent simulation result figure of the displacement of a kind of embodiment of the utility model, and as can be seen from the figure, the separating brake process finishes in 40ms, meets design requirement;
Fig. 7 is the speed characteristic curve simulation result figure of a kind of embodiment of the utility model, and as can be seen from the figure rate curve is more satisfactory, has more reasonably satisfied the requirement of circuit-breaker switching on-off speed characteristics;
Fig. 8 is the pulse power curve chart of a kind of embodiment of the utility model, and as can be seen from the figure, this pulse power has a change procedure that significantly rises to decline.
Claims (5)
1, a kind of pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker, comprise elementary iron core, secondary iron core, electric machine main shaft and armature winding, it is characterized in that being provided with in the elementary iron core the secondary iron core that two symmetries are placed, be provided with NULL between two secondary iron cores, an every secondary termination unshakable in one's determination has an electric machine main shaft, embeds armature winding in the secondary iron core; Be provided with NULL between elementary iron core and the secondary end face of iron core, be provided with permanent magnet between every secondary side unshakable in one's determination and the elementary iron core, permanent magnet is placed on the elementary iron core.
2,, it is characterized in that described permanent magnet thickness is between 6～10mm scope according to the described pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker of claim 1.
3,, it is characterized in that being provided with NULL between the described permanent magnet according to the described pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker of claim 1.
4,, it is characterized in that every secondary iron core is provided with a permanent magnet in the side up and down according to the described pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker of claim 1.
5, according to the described pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker of claim 4, the magnetic induction line that it is characterized in that secondary upper side permanent magnet unshakable in one's determination is along 90 ° in vertical-horizontal direction; The magnetic induction line of secondary downside permanent magnet unshakable in one's determination is along vertical-horizontal direction-90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200140124U CN201408698Y (en) | 2009-05-27 | 2009-05-27 | Pulsed power type permanent magnet linear motor actuator of high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200140124U CN201408698Y (en) | 2009-05-27 | 2009-05-27 | Pulsed power type permanent magnet linear motor actuator of high-voltage circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN201408698Y true CN201408698Y (en) | 2010-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200140124U Expired - Lifetime CN201408698Y (en) | 2009-05-27 | 2009-05-27 | Pulsed power type permanent magnet linear motor actuator of high-voltage circuit breaker |
Country Status (1)
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| CN (1) | CN201408698Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562088B (en) * | 2009-05-27 | 2011-10-26 | 沈阳工业大学 | Pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker |
-
2009
- 2009-05-27 CN CN2009200140124U patent/CN201408698Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562088B (en) * | 2009-05-27 | 2011-10-26 | 沈阳工业大学 | Pulse power type permanent magnet linear motor (PMLM) operating mechanism of high-voltage circuit-breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100217 Effective date of abandoning: 20090527 |