CN110120658A - A kind of grid current limiting device and system - Google Patents
A kind of grid current limiting device and system Download PDFInfo
- Publication number
- CN110120658A CN110120658A CN201910416893.0A CN201910416893A CN110120658A CN 110120658 A CN110120658 A CN 110120658A CN 201910416893 A CN201910416893 A CN 201910416893A CN 110120658 A CN110120658 A CN 110120658A
- Authority
- CN
- China
- Prior art keywords
- pedestal
- current limiting
- fixedly connected
- device case
- screw rod
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Abstract
The invention discloses a kind of grid current limiting device and system, including pedestal and device case, device case is horizontally placed on the top of pedestal, and cavity is equipped in the pedestal, is rotatably connected to screw rod in the cavity；Fixing sleeve is connected to first gear on the screw rod, is fixedly connected with motor on the outer wall of the pedestal；The output end of the motor runs through the outer wall of pedestal and extends into cavity, one end fixing sleeve that the motor extends is connected to the second gear being meshed with first gear, including current limliting electricity shoulders device, intelligent high-speed switch, controller, current transformer and voltage transformer；The input terminal that the output end of the controller is switched with electric current reactor and intelligent high-speed respectively is connect；The output end of the current transformer and voltage transformer is connect with the input terminal of controller.The present invention allows device to install and use environment according to actual and adjusted accordingly, to improve the scope of application of device by the setting of many places regulating mechanism.
Description
Technical field
The present invention relates to network system technical field more particularly to a kind of grid current limiting device and systems.
Background technique
Power electronic technique is mostly used greatly to the limitation of 500kV and following grid short circuit electric current both at home and abroad at present, is realized
Come 10 times that cost is our devices, and take up a large area, operational reliability is not high.
2008, Ningxia DianKeYuan propose by Fast Switch with Large Capacity and current-limiting reactor power grid high pressure primary side simultaneously
Connection forms the imagination of integrated " energy-saving grid current limiting device ", and proposes the technical principle of realization device, product structure
And technical parameter, and Electrical Power Research Institute of Ningxia Electric Power Corporation, Kai Li group cooperation research and development, as shown in Figure 1,1 is single for control
Member, 2 be battery, and 3 be nonlinear resistance, and 4 be fuse, and 5 be pontic, wherein by the pontic 5 of Fast Switch with Large Capacity, is melted
The disconnected elements such as device 4 and nonlinear resistance 3 are mounted in compound inslation sleeve, by the inversion capacitive partial pressure for doubling as insulation column
Device directly obtains control system working power by power grid high pressure primary side, realization device measurement, control, multi-parameter intelligence in high-pressure side
The fully automatic operation that can be judged, so that the application of Fast Switch with Large Capacity haves a qualitative leap, " the energy-saving power grid succeeded in developing
Current-limiting apparatus " is used in Ningxia 220kV substation 35kV medium voltage network, is correctly acted, is kept away when short trouble in the near region 35kV
Main transformer and other equipment are exempted from by the generation of excessive short-circuit current rush damaged condition, it is ensured that system safe and stable operation.
But existing grid current limiting device external structure is relatively simple, current-limiting apparatus, can not basis when installing and using
Actual real-world environment is adjusted accordingly, to influence the scope of application of current-limiting apparatus.
Summary of the invention
1. technical problems to be solved
The purpose of the present invention is to solve grid current limiting device external structure in the prior art is relatively simple, current-limiting apparatus
When installing and using, the problem of can not accordingly be adjusted according to actual real-world environment, and a kind of grid current limiting dress proposed
It sets and system.
2. technical solution
To achieve the goals above, present invention employs following technical solutions:
A kind of grid current limiting device and system, including pedestal and device case, device case are horizontally placed on the top of pedestal, institute
It states and is equipped with cavity in pedestal, be rotatably connected to screw rod in the cavity；
Fixing sleeve is connected to first gear on the screw rod, is fixedly connected with motor on the outer wall of the pedestal；
The output end of the motor runs through the outer wall of pedestal and extends into cavity, one end fixing sleeve that the motor extends
It is connected to the second gear being meshed with first gear；
One end of the screw rod is run through the inner top of cavity and is upwardly extended, and the threaded one end that the screw rod extends is socketed with
The top of thread bush, the thread bush is fixedly connected with the bottom of device case；
Fixing sleeve is connected to support plate on the outer wall of the thread bush, and the support plate and the bottom of device case pass through multiple resistances
The connection of Buddhist nun's damper；
The bottom of the support plate is fixedly connected with multiple slide bars, and the top of the pedestal is equipped with cunning corresponding with slide bar
Chamber；
Current-limiting mechanism is fixedly connected in described device case, the side of described device case is equipped with port, leads in the port
It crosses shaft and is rotatably connected to baffle；
The baffle is connected with lock-screw far from the threaded one end of shaft, and the inner wall of the port is equipped with and locking screw
Follow closely corresponding locking slot.
Preferably, the bottom of the pedestal is fixedly connected with multiple latch segments, and the latch segment is equipped with keeper.
Preferably, the slide bar is fixedly connected with fixture block positioned at sliding intracavitary one end.
Preferably, one end that the screw rod is located in thread bush is fixedly connected with limited block.
Preferably, be arranged with torque spring in the shaft, the both ends of the torque spring respectively with baffle and port
Inner wall is fixedly connected.
Preferably, described device case is equipped with thermovent far from the inner wall of port side, and fixation plugs in the thermovent
There is Air Filter.
The invention also provides a kind of grid current limiting systems, including current limliting electricity to shoulder device, intelligent high-speed switch, controller, electricity
Current transformer and voltage transformer；
The input terminal that the output end of the controller is switched with electric current reactor and intelligent high-speed respectively is connect；
The output end of the current transformer and voltage transformer is connect with the input terminal of controller.
Preferably, the current limiting system includes warning circuit, the output end of the warning circuit and the input terminal of controller
Connection.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) in the present invention, motor is first opened, drives screw rod to turn by the engagement between first gear and second gear
It is dynamic, to be moved up and down by thread bush driving device case, while the shaking of support plate, damping shock absorption can be effectively prevented in slide bar
Device can play a certain role of shock absorption and buffering device case, and the present invention makes device can be with by the setting of many places regulating mechanism
It installs and uses environment according to actual and is adjusted accordingly, to improve the scope of application of device.
(2) lock-screw is first unscrewed, is then beaten when needing to safeguard the current-limiting mechanism in device case in the present invention
Baffle is opened, while Air Filter can be effectively prevented dust and enter in device case, the heat radiation energy of device can be enhanced in thermovent
Power, while fixture block can be effectively prevented slide bar and fall off from cunning is intracavitary, limited block can be effectively prevented screw rod and fall off out of thread bush.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of grid current limiting device proposed by the present invention；
Fig. 2 is the side structure schematic view at a kind of grid current limiting device bull stick proposed by the present invention；
Fig. 3 is the overlooking structure diagram at a kind of grid current limiting device support plate；
Fig. 4 is a kind of schematic diagram of grid current limiting system proposed by the present invention.
In figure: 1 pedestal, 2 device casees, 3 cavitys, 4 screw rods, 5 first gears, 6 motors, 7 second gears, 8 thread bush, 9
Support plate, 10 damping shock absorbers, 11 slide bars, 12 sliding chambers, 13 current-limiting mechanisms, 14 ports, 15 shafts, 16 baffles, 17 lock-screws, 18
Latch segment, 19 fixture blocks, 20 limited blocks, 21 Air Filters.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment 1:
Referring to Fig.1-3, a kind of grid current limiting device, including pedestal 1 and device case 2, device case 2 are horizontally placed on pedestal 1
Top, cavity 3 is equipped in pedestal 1 for screw rod 4 to be arranged and screw rod 4 is rotatably connected in cavity, for driving thread bush 8
Lower movement；
Fixing sleeve is connected to first gear 5 on screw rod 4, for driving screw rod 4 to rotate, is fixedly connected on the outer wall of pedestal 1
Motor 6, for driving second gear 7 to rotate；
The output end of motor 6 runs through the outer wall of pedestal 1 and extends into cavity 3, and one end fixing sleeve that motor 6 extends is connected to
The second gear 7 being meshed with first gear 5, for driving first gear 5 to rotate；
One end of screw rod 4 is run through the inner top of cavity 3 and is upwardly extended, and the threaded one end that screw rod 4 extends is socketed with screw thread
Set 8, is used to support device case 2, the top of thread bush 8 is fixedly connected with the bottom of device case 2；
Fixing sleeve is connected to support plate 9 on the outer wall of thread bush 8, is used to support thread bush 8, the bottom of support plate 9 and device case 2
Portion is connected by multiple damping shock absorbers 10, for playing a certain role of shock absorption and buffering to device case 2；
The bottom of support plate 9 is fixedly connected with multiple slide bars 11, is used to support support plate 9, and the top of pedestal 1 is equipped with and cunning
The corresponding sliding chamber 12 of bar 11；
Current-limiting mechanism 13 is fixedly connected in device case 2, the side of device case 2 is equipped with port 14, convenient to current-limiting mechanism
13 are safeguarded, are rotatably connected to baffle 16 by shaft 15 in port 14, are played a certain protective role to current-limiting mechanism 13；
Baffle 16 is connected with lock-screw 17 far from the threaded one end of shaft 15, facilitates fixed baffle 16, port 14 it is interior
Wall is equipped with locking slot corresponding with lock-screw 17.
In the present embodiment, the bottom of pedestal 1 is fixedly connected with multiple latch segments 18, and latch segment 18 is equipped with keeper, side
Just firm banking 1, one end that slide bar 11 is located in sliding chamber 12 are fixedly connected with fixture block 19, prevent slide bar 11 from taking off out of sliding chamber 12
It falls, one end that screw rod 4 is located in thread bush 8 is fixedly connected with limited block 20, prevents screw rod 4 from falling off out of thread bush 8, shaft 15
On be arranged with torque spring, the both ends of torque spring are fixedly connected with the inner wall of baffle 16 and port 14 respectively, for baffle
16 play certain torque force support, and device case 2 is equipped with thermovent far from the inner wall of 14 side of port, and fixation plugs in thermovent
There are Air Filter 21, the heat-sinking capability of enhancement device case 2.
With reference to Fig. 4, a kind of grid current limiting system in the present embodiment, including current limliting electricity shoulder device, intelligent high-speed switch, control
Device, current transformer and voltage transformer；
The input terminal that the output end of controller is switched with electric current reactor and intelligent high-speed respectively is connect, for electric current electricity
Anti- device and intelligent high-speed switch are controlled；
The output end of current transformer and voltage transformer is connect with the input terminal of controller, for carrying out to controller
Protection.
Embodiment 2:
Referring to Fig.1-3, a kind of grid current limiting device, including pedestal 1 and device case 2, device case 2 are horizontally placed on pedestal 1
Top, cavity 3 is equipped in pedestal 1 for screw rod 4 to be arranged and screw rod 4 is rotatably connected in cavity, for driving thread bush 8
Lower movement；
Fixing sleeve is connected to first gear 5 on screw rod 4, for driving screw rod 4 to rotate, is fixedly connected on the outer wall of pedestal 1
Motor 6, for driving second gear 7 to rotate；
The output end of motor 6 runs through the outer wall of pedestal 1 and extends into cavity 3, and one end fixing sleeve that motor 6 extends is connected to
The second gear 7 being meshed with first gear 5, for driving first gear 5 to rotate；
One end of screw rod 4 is run through the inner top of cavity 3 and is upwardly extended, and the threaded one end that screw rod 4 extends is socketed with screw thread
Set 8, is used to support device case 2, the top of thread bush 8 is fixedly connected with the bottom of device case 2；
Fixing sleeve is connected to support plate 9 on the outer wall of thread bush 8, is used to support thread bush 8, the bottom of support plate 9 and device case 2
Portion is connected by multiple damping shock absorbers 10, for playing a certain role of shock absorption and buffering to device case 2；
The bottom of support plate 9 is fixedly connected with multiple slide bars 11, is used to support support plate 9, and the top of pedestal 1 is equipped with and cunning
The corresponding sliding chamber 12 of bar 11；
Current-limiting mechanism 13 is fixedly connected in device case 2, the side of device case 2 is equipped with port 14, convenient to current-limiting mechanism
13 are safeguarded, are rotatably connected to baffle 16 by shaft 15 in port 14, are played a certain protective role to current-limiting mechanism 13；
Baffle 16 is connected with lock-screw 17 far from the threaded one end of shaft 15, facilitates fixed baffle 16, port 14 it is interior
Wall is equipped with locking slot corresponding with lock-screw 17.
In the present embodiment, the bottom of pedestal 1 is fixedly connected with multiple latch segments 18, and latch segment 18 is equipped with keeper, side
Just firm banking 1, one end that slide bar 11 is located in sliding chamber 12 are fixedly connected with fixture block 19, prevent slide bar 11 from taking off out of sliding chamber 12
It falls, one end that screw rod 4 is located in thread bush 8 is fixedly connected with limited block 20, prevents screw rod 4 from falling off out of thread bush 8, shaft 15
On be arranged with torque spring, the both ends of torque spring are fixedly connected with the inner wall of baffle 16 and port 14 respectively, for baffle
16 play certain torque force support, and device case 2 is equipped with thermovent far from the inner wall of 14 side of port, and fixation plugs in thermovent
There are Air Filter 21, the heat-sinking capability of enhancement device case 2.
With reference to Fig. 4, a kind of grid current limiting system in the present embodiment, including current limliting electricity shoulder device, intelligent high-speed switch, control
Device, current transformer and voltage transformer；
The input terminal that the output end of controller is switched with electric current reactor and intelligent high-speed respectively is connect, for electric current electricity
Anti- device and intelligent high-speed switch are controlled；
Current limiting system includes warning circuit, and the output end of warning circuit and the input terminal of controller connect, for control
Device is protected；
The output end of current transformer and voltage transformer is connect with the input terminal of controller, for carrying out to controller
Protection.
In the present embodiment, motor 6 is first opened, screw rod is driven by the engagement between first gear 5 and second gear 7
4 rotations, thus moved up and down by 8 driving device case 2 of thread bush, while the shaking of support plate 9 can be effectively prevented in slide bar 11,
Damping shock absorber 10 can play a certain role of shock absorption and buffering device case 2；
In the present embodiment, when needing to safeguard the current-limiting mechanism 13 in device case 2, lock-screw 17 is first unscrewed,
Then baffle 16 is opened, while Air Filter 21 can be effectively prevented dust and enter in device case 2, dress can be enhanced in thermovent
The heat-sinking capability set, while fixture block 19 can be effectively prevented slide bar 11 and fall off out of sliding chamber 12, limited block 20 can be effectively prevented
Screw rod 4 falls off out of thread bush 8.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of grid current limiting device, including pedestal (1) and device case (2), device case (2) are horizontally placed on the upper of pedestal (1)
Side, which is characterized in that be equipped with cavity (3) in the pedestal (1), be rotatably connected to screw rod (4) in the cavity；
Fixing sleeve is connected to first gear (5) on the screw rod (4), is fixedly connected with motor (6) on the outer wall of the pedestal (1)；
Outer wall of the output end of the motor (6) through pedestal (1) and the extension into cavity (3), the one of motor (6) extension
End fixing sleeve is connected to the second gear (7) being meshed with first gear (5)；
One end of the screw rod (4) is run through the inner top of cavity (3) and is upwardly extended, the threaded one end that the screw rod (4) extends
It is socketed with thread bush (8), the top of the thread bush (8) is fixedly connected with the bottom of device case (2)；
Fixing sleeve is connected to support plate (9) on the outer wall of the thread bush (8), and the bottom of the support plate (9) and device case (2) is logical
Cross multiple damping shock absorbers (10) connection；
The bottom of the support plate (9) is fixedly connected with multiple slide bars (11), and the top of the pedestal (1) is equipped with and slide bar (11)
Corresponding sliding chamber (12)；
It is fixedly connected with current-limiting mechanism (13) in described device case (2), the side of described device case (2) is equipped with port (14), institute
It states in port (14) and is rotatably connected to baffle (16) by shaft (15)；
The baffle (16) is connected with lock-screw (17) far from the threaded one end of shaft (15), on the inner wall of the port (14)
Equipped with locking slot corresponding with lock-screw (17).
2. a kind of grid current limiting device according to claim 1, which is characterized in that the bottom of the pedestal (1) is fixed to be connected
It is connected to multiple latch segments (18), the latch segment (18) is equipped with keeper.
3. a kind of grid current limiting device according to claim 1, which is characterized in that the slide bar (11) is located at sliding chamber (12)
Interior one end is fixedly connected with fixture block (19).
4. a kind of grid current limiting device according to claim 1, which is characterized in that the screw rod (4) is located at thread bush (8)
Interior one end is fixedly connected with limited block (20).
5. a kind of grid current limiting device according to claim 1, which is characterized in that be arranged with torsion on the shaft (15)
Spring, the both ends of the torque spring are fixedly connected with the inner wall of baffle (16) and port (14) respectively.
6. a kind of grid current limiting device according to claim 1, which is characterized in that described device case (2) is far from port
(14) inner wall of side is equipped with thermovent, is fixedly plugged with Air Filter (21) in the thermovent.
7. a kind of grid current limiting system, which is characterized in that shoulder device, intelligent high-speed switch, controller, Current Mutual Inductance including current limliting electricity
Device and voltage transformer；
The input terminal that the output end of the controller is switched with electric current reactor and intelligent high-speed respectively is connect；
The output end of the current transformer and voltage transformer is connect with the input terminal of controller.
8. a kind of grid current limiting device according to claim 7 and system, which is characterized in that the current limiting system includes report
Alert circuit, the output end of the warning circuit and the input terminal of controller connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416893.0A CN110120658A (en) | 2019-05-20 | 2019-05-20 | A kind of grid current limiting device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416893.0A CN110120658A (en) | 2019-05-20 | 2019-05-20 | A kind of grid current limiting device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110120658A true CN110120658A (en) | 2019-08-13 |
Family
ID=67522897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910416893.0A Pending CN110120658A (en) | 2019-05-20 | 2019-05-20 | A kind of grid current limiting device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110120658A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023000A (en) * | 2013-01-09 | 2013-04-03 | 宁夏电力公司电力科学研究院 | Power grid current limiting device, power grid current limiter and power grid current limiting system |
| CN107821222A (en) * | 2017-11-25 | 2018-03-23 | 肇庆高新区小黑科技有限公司 | A kind of energy saving and environment friendly poultry farming house |
| CN207579762U (en) * | 2017-10-25 | 2018-07-06 | 覃斯坦 | Vehicle mounted communication and audio-video recording radio transmitting device |
| CN208401539U (en) * | 2018-06-14 | 2019-01-18 | 安徽博洽多闻智能电网科技有限公司 | A kind of protective device for electrical grid transmission flow restriction |
-
2019
- 2019-05-20 CN CN201910416893.0A patent/CN110120658A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023000A (en) * | 2013-01-09 | 2013-04-03 | 宁夏电力公司电力科学研究院 | Power grid current limiting device, power grid current limiter and power grid current limiting system |
| CN207579762U (en) * | 2017-10-25 | 2018-07-06 | 覃斯坦 | Vehicle mounted communication and audio-video recording radio transmitting device |
| CN107821222A (en) * | 2017-11-25 | 2018-03-23 | 肇庆高新区小黑科技有限公司 | A kind of energy saving and environment friendly poultry farming house |
| CN208401539U (en) * | 2018-06-14 | 2019-01-18 | 安徽博洽多闻智能电网科技有限公司 | A kind of protective device for electrical grid transmission flow restriction |
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Application publication date: 20190813 |
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| RJ01 | Rejection of invention patent application after publication |