CN205210268U - High voltage direct current cut -offs experimental apparatus - Google Patents
High voltage direct current cut -offs experimental apparatus Download PDFInfo
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- CN205210268U CN205210268U CN201520866661.2U CN201520866661U CN205210268U CN 205210268 U CN205210268 U CN 205210268U CN 201520866661 U CN201520866661 U CN 201520866661U CN 205210268 U CN205210268 U CN 205210268U
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- 238000010891 electric arc Methods 0.000 claims abstract description 15
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims description 25
- 238000005259 measurement Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 3
- 241000607479 Yersinia pestis Species 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The utility model discloses a high voltage direct current cut -offs experimental apparatus, this experimental apparatus include the device body and lie in the device that this internal is provided with the quiet arc contact from top to bottom, moves the arc contact, and the experimental apparatus is still including the operating mechanism that moves, the quiet arc contact carries out the divide -shut brake, the quiet arc contact, move to be connected with respectively on the arc contact and execute the live end, are equipped with on the device body lateral wall to be used for the observation the quiet arc contact, move the observation window of the electric arc that the arc contact produced when the separating brake. The utility model provides a high voltage direct current cut -offs experimental apparatus can simulate the divide -shut brake process of moving arc contact, quiet arc contact, through changing the parameter of moving the operating mechanism of arc contact, can change the velocity of movement that moves the arc contact, locates the electric arc form of observation window observation under the different separating brake speed on the device body with regard to the accessible, finds out the pests occurrence rule of electric arc, further guides switch structure's optimal design.
Description
Technical field
The utility model relates to a kind of high voltage direct current and cut-offs experimental provision.
Background technology
In HVDC (High Voltage Direct Current) transmission system, the conversion of some method of operation and the excision of fault need to adopt direct current switch, and DC current does not have zero crossing, so breaking direct current must force zero passage.But when DC current forces zero passage, will discharge because straight-flow system stores huge energy, the energy discharged can produce superpotential on loop, cause the arc reignition between fracture, so that cause failure of interruption.The direct current switch adopted in the HVDC converter substation that China is built forms by three parts: 1. the switch transformed by AC circuit breaker; 2. to form the oscillation circuit for the purpose of current zero-crossing point; 3. to absorb the dissipative cell for the purpose of the energy stored in DC loop.Oscillation circuit and dissipative cell cost higher, existing direct current change-over switch arrangement is complicated, manufacture and maintenance cost higher.Improving the quick-speed turning on-off performance of high-voltage direct current switch, reduce manufacturing cost, is the developing direction of high-voltage switch gear.Cut-offfing reliability and by which factor being restricted of high-voltage switch gear, also needs research.
Summary of the invention
The purpose of this utility model is to provide a kind of high voltage direct current and cut-offs experimental provision, with the data of analyzing influence arc parameters, the pests occurrence rule finding electric arc, can instruct the optimal design of construction of switch further.
In order to realize above object, the technical scheme that the utility model high voltage direct current cut-offs experimental provision is as follows: high voltage direct current cut-offs experimental provision, comprise device body and be positioned at the contact assembly of device body, contact assembly comprises and is vertically disposed with static arc contact, moving arcing contact, described experimental provision also comprises the described static arc contact of driving, moving arcing contact carries out the operating mechanism of divide-shut brake, described device body has the cavity for described moving arcing contact motion, described static arc contact, moving arcing contact is connected to applying voltage end, static arc contact is made by applying voltage end applying voltage, moving arcing contact forms closed-loop path when closing a floodgate, device body lateral wall is provided with for observing described static arc contact, the view window of the electric arc that moving arcing contact produces when separating brake.
Device body is provided with the measurement mechanism of the corresponding data for gathering electric arc.
Measurement mechanism comprises measures cover plate and temperature sensor, gas pressure sensor, measures cover plate and is provided with corresponding temperature sensor leading-out terminal and gas pressure sensor leading-out terminal.
Device body is in the tubular extended along the vertical direction, described device body sidewall is radially convexly equipped with measuring cylinder, described measuring cylinder have the cavity of communication apparatus body, for placing the installing space of described temperature sensor, gas pressure sensor, described measurement cover plate is connected in described measuring cylinder.
Contact assembly is made up of static arc contact, moving arcing contact.
Operating mechanism is that motor drives operating mechanism, and motor drives operating mechanism to comprise servomotor and the gear train between servomotor and moving arcing contact.
The axis of the output shaft of servomotor is vertical with the direction of motion of described moving arcing contact.
Device body is provided with burst disk between described static arc contact and moving arcing contact.
The beneficial effects of the utility model: the high voltage direct current that the utility model provides cut-offs experimental provision, the divide-shut brake process of moving arcing contact, static arc contact can be simulated, by changing the parameter of the operating mechanism driving moving arcing contact, the movement velocity of moving arcing contact can be changed, just observe the arc shape under different opening velocity by the view window be located on device body, find out the pests occurrence rule of electric arc, instruct the optimal design of construction of switch further.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model high voltage direct current cut-offs experimental provision embodiment;
Fig. 2 is the structural representation of the device body in Fig. 1;
Fig. 3 is the structural representation that the utility model high voltage direct current cut-offs the operating mechanism in experimental provision.
Embodiment
The utility model high voltage direct current cut-offs the embodiment of experimental provision: as Figure 1-3, high voltage direct current is cut-off experimental provision and is comprised support 5 and be located at the device body 6 on support 5, device body 6 is in the tubular extended along the vertical direction, contact assembly is provided with in device body 6, contact assembly comprises and is vertically disposed with static arc contact 8, moving arcing contact 9, and device body 6 has the cavity moved for moving arcing contact 9.The motor that this experimental provision also comprises driving static arc contact 8, moving arcing contact 9 carries out divide-shut brake drives operating mechanism.Device body is provided with two and applies voltage ends and form closed-loop path to make static arc contact, moving arcing contact when closing a floodgate, and one is the applying voltage end 1 of the upper end being positioned at device body, and another is the applying voltage end 3 be positioned on the sidewall of device body.Device body 6 lateral wall is provided with the view window 2 for observing the electric arc that static arc contact 8, moving arcing contact 9 produce when separating brake, device body 6 is convexly equipped with viewport in the top applying voltage end, the outer end of viewport is provided with cover plate 14, the material of cover plate 14 adopts acrylic acid, transmittance reaches more than 90%, can tolerate the instantaneous pressure produced in electric arc generation timer body and impact.High-speed camera can be used to take the form of electric arc.
Device body 6 is provided with the measurement mechanism of the corresponding data for gathering electric arc in the relative side applying voltage end 3, measurement mechanism comprises measures cover plate 13 and temperature sensor, gas pressure sensor, measures cover plate 13 and is provided with corresponding temperature sensor leading-out terminal 11 and gas pressure sensor leading-out terminal 12.Device body 6 sidewall is radially convexly equipped with measuring cylinder 10, measuring cylinder 10 have the cavity of communication apparatus body, for the installing space of laying temperature sensor, gas pressure sensor, measure cover plate 13 and be connected in measuring cylinder 10.
Operating mechanism is that motor drives operating mechanism, and motor drives operating mechanism to comprise servomotor 4 and the gear train between servomotor 4 and moving arcing contact.Gear train comprises connecting lever 19, insulated tension pole 18, and insulated tension pole can drive air cylinder knee-action, and air cylinder comprises cylinder body and piston 17.Air cylinder 16 is connected with spout 15.The axis of the output shaft of servomotor is vertical with the direction of motion of moving arcing contact.In the present embodiment, why adopt servomotor 4 as power source, consider to adopt conventional spring operating mechanism, be subject to the restriction of spring device own characteristic, the adjustment of fracture being opened to distance, divide-shut brake speed cannot be realized, comprehensively can not study the influence factor of arc voltage, electric current form.Adopt servomotor, rotating speed and the anglec of rotation of motor output shaft can be adjusted, realize the adjustment of divide-shut brake speed and fracture being opened to distance by kinematic train.Open distance and divide-shut brake speed changes arc temperature and form by changing, thus obtain the data more affect arc parameters, be conducive to finding the pests occurrence rule of electric arc and the structural design of optimization switch.In other embodiments, spring operating mechanism conventional in isolating switch also can be adopted as operating mechanism.
In order to the security consideration tested, device body is provided with burst disk 7 between static arc contact and moving arcing contact, when the gaseous tension in device body is excessive, burst disk preferentially bursts, the intrinsic pressure of releasing means.
In the present embodiment, by arranging measuring cylinder, make the easier for installation of corresponding sensor, also safer.In other embodiments, also can directly arrange accordingly for the insert of sensor installation on device body, or also measurement mechanism is arranged to box-like, measurement mechanism itself has the installing space for placing corresponding sensor, and on measurement mechanism, reserve corresponding sensor leading-out terminal, to be connected with the data collector in the external world.
In the present embodiment, contact assembly is made up of static arc contact, moving arcing contact, simplify fracture texture, decrease dynamic and static main contact, cut-off generation electric arc by dynamic and static arcing contact, this reduces the quality of moving arcing contact moving parts, reduce the friction force between dynamic and static main contact simultaneously, improve the movement velocity of moving arcing contact assembly to a certain extent, thus improve divide-shut brake speed.In other embodiments, also can adopt the normal contact assembly adopted in isolating switch, comprise moving contact, static contact.
Further, by increasing the length of connecting lever 19, air cylinder 16 and piston 17, increasing the most large opening of contact, also namely adding the effective exercise distance of moving arcing contact assembly, be conducive to divide-shut brake speed and the adjustment of opening distance.
Claims (8)
1. high voltage direct current cut-offs experimental provision, it is characterized in that: comprise device body and be positioned at the contact assembly of device body, contact assembly comprises and is vertically disposed with static arc contact, moving arcing contact, described experimental provision also comprises the described static arc contact of driving, moving arcing contact carries out the operating mechanism of divide-shut brake, described device body has the cavity for described moving arcing contact motion, described static arc contact, moving arcing contact is connected to applying voltage end, static arc contact is made by applying voltage end applying voltage, moving arcing contact forms closed-loop path when closing a floodgate, device body lateral wall is provided with for observing described static arc contact, the view window of the electric arc that moving arcing contact produces when separating brake.
2. high voltage direct current according to claim 1 cut-offs experimental provision, it is characterized in that: described device body is provided with the measurement mechanism of the corresponding data for gathering electric arc.
3. high voltage direct current according to claim 2 cut-offs experimental provision, it is characterized in that: described measurement mechanism comprises measures cover plate and temperature sensor, gas pressure sensor, measures cover plate and is provided with corresponding temperature sensor leading-out terminal and gas pressure sensor leading-out terminal.
4. high voltage direct current according to claim 3 cut-offs experimental provision, it is characterized in that: described device body is in the tubular extended along the vertical direction, described device body sidewall is radially convexly equipped with measuring cylinder, described measuring cylinder have the cavity of communication apparatus body, for placing the installing space of described temperature sensor, gas pressure sensor, described measurement cover plate is connected in described measuring cylinder.
5. high voltage direct current according to claim 1 cut-offs experimental provision, it is characterized in that: described contact assembly is made up of static arc contact, moving arcing contact.
6. high voltage direct current according to claim 1 cut-offs experimental provision, it is characterized in that: described operating mechanism is that motor drives operating mechanism, and motor drives operating mechanism to comprise servomotor and the gear train between servomotor and moving arcing contact.
7. high voltage direct current according to claim 6 cut-offs experimental provision, it is characterized in that: the axis of the output shaft of described servomotor is vertical with the direction of motion of described moving arcing contact.
8. the high voltage direct current according to claim 1 to 7 any one cut-offs experimental provision, it is characterized in that: described device body is provided with burst disk between described static arc contact and moving arcing contact.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520866661.2U CN205210268U (en) | 2015-11-03 | 2015-11-03 | High voltage direct current cut -offs experimental apparatus |
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| CN201520866661.2U CN205210268U (en) | 2015-11-03 | 2015-11-03 | High voltage direct current cut -offs experimental apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259501A (en) * | 2015-11-03 | 2016-01-20 | 平高集团有限公司 | High-voltage direct-current on-off experiment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259501A (en) * | 2015-11-03 | 2016-01-20 | 平高集团有限公司 | High-voltage direct-current on-off experiment device |
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