CN203165787U - Quick switch for direct current circuit breaker - Google Patents
Quick switch for direct current circuit breaker Download PDFInfo
- Publication number
- CN203165787U CN203165787U CN 201320025343 CN201320025343U CN203165787U CN 203165787 U CN203165787 U CN 203165787U CN 201320025343 CN201320025343 CN 201320025343 CN 201320025343 U CN201320025343 U CN 201320025343U CN 203165787 U CN203165787 U CN 203165787U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- electromagnetic repulsion
- metal enclosed
- speed switch
- isolating switch
- 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.)
- Expired - Lifetime
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Abstract
本实用新型提供一种直流断路器用快速开关，所述快速开关包括主回路机构、电磁斥力机构、控制回路和缓冲保持机构；所述主回路机构通过电磁斥力机构和控制回路连接，所述电磁斥力机构与所述缓冲保持机构连接，所述缓冲保持机构通过预埋螺栓方式固定在水平面上。本实用新型解决了多个隔离开关单独驱动的动作分散性问题，可同时安装多个驱动机构，提供较大的驱动力，同时简化了电磁斥力机构使用中分合闸保持机构的使用；结构简单，设计紧凑。
The utility model provides a quick switch for a DC circuit breaker, the quick switch includes a main circuit mechanism, an electromagnetic repulsion mechanism, a control circuit and a buffer holding mechanism; the main circuit mechanism is connected with the control circuit through an electromagnetic repulsion mechanism, and the electromagnetic repulsion The mechanism is connected with the buffering and holding mechanism, and the buffering and holding mechanism is fixed on the horizontal plane by pre-embedded bolts. The utility model solves the action dispersion problem of a plurality of isolating switches individually driven, can install a plurality of driving mechanisms at the same time, provides greater driving force, and simultaneously simplifies the use of the opening and closing holding mechanism in the use of the electromagnetic repulsion mechanism; the structure is simple , compact design.
Description
Technical field
The utility model belongs to the High-Voltage Insulation technical field, is specifically related to a kind of dc circuit breaker high-speed switch.
Background technology
(voltage source converter, (High Voltage Direct Current Transmission, progress HVDC) makes structure direct current network (DC-grid) become possibility to high voltage direct current transmission VSC) based on voltage source converter station.With respect to AC network, the direct current network short circuit current is big and climbing speed is fast, and is bigger to network harm.Therefore, need reliable high pressure forthright circuit breaker to excise fault rapidly, to avoid the voltage off-the-line of direct current network, guarantee the normal operation of current conversion station.In order to reduce the disturbance to current conversion station, especially reduce the cable that is not connected to the fault point and the influence of transmission line, should in several ms, excise fault.
Prior mechanical high voltage direct current circuit breaker can be in tens of ms the disjunction direct current, can't satisfy the requirement of reliable direct current network slowly because of its speed.The semiconductor switch that is used for dc circuit breaker can overcome the restriction on the responsiveness easily, but its loss is bigger, accounts for 30% of voltage-source type current conversion station loss.
The utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of dc circuit breaker high-speed switch, solved the action dispersion problem that a plurality of isolating switches drive separately, a plurality of driving mechanisms can be installed simultaneously, bigger actuating force is provided, has simplified the use of divide-shut brake maintaining body during electromagnetic repulsion force mechanism uses simultaneously; Simple in structure, compact to design.
To achieve these goals, the utility model is taked following scheme:
A kind of dc circuit breaker high-speed switch is provided, and described high-speed switch comprises major loop mechanism, electromagnetic repulsion force mechanism, control loop and buffering maintaining body; Described major loop mechanism is connected with control loop by electromagnetic repulsion force mechanism, and described electromagnetic repulsion force mechanism is connected with described buffering maintaining body, and described buffering maintaining body is fixed on the horizontal plane by the pre-embedded bolt mode.
Described major loop mechanism comprises metal enclosed container, insulating sleeve, grading resistor, isolating switch, insulation rotating shaft and support A; Described isolating switch, insulation rotating shaft and support A all place described metal enclosed internal tank, and described grading resistor is in parallel with isolating switch; The moving contact of described isolating switch is fixed in the insulation rotating shaft; One end of described insulation rotating shaft is connected with the linkage that passes metal enclosed container; Described insulation rotating shaft is supported by support A, and described support A is fixed on metal enclosed container bottom.
The number of described insulating sleeve is 2 times of described isolating switch number, and described grading resistor number equates with the number of isolating switch.
Described insulating sleeve is installed in by the mode that is threaded on the sidewall of described metal enclosed container, and the one end is connected with isolating switch, and the insulating sleeve of the other end and series connection with it is connected.
Be filled with SF in the described metal enclosed container
6Gas.
Described electromagnetic repulsion force mechanism comprises switching winding a
1, closing coil a
2, copper dish connecting rod, support B and linkage; Described copper dish connecting rod comprises copper dish and connecting rod; Described switching winding a
1With closing coil a
2All fix by described support B, described connecting rod connects described linkage, and it passes switching winding a from top to bottom successively
1, copper dish and closing coil a
2Be connected with the tripping spring of described buffering maintaining body.
Described control loop comprises electronic monitoring module and discharge loop; Described discharge loop comprises storage capacitor, and described electronic monitoring module connects described electromagnetic repulsion force mechanism by discharge loop.
Described buffering maintaining body comprises cushion rubber bumper, tripping spring and base; Described cushion rubber bumper places described metal enclosed container inner wall, and described tripping spring is fixed on the horizontal plane by base.
Compared with prior art, the beneficial effects of the utility model are:
1) adopt the multi-break isolating switch to connect to bear the high voltage grade;
2) solved the action dispersion problem that a plurality of isolating switches drive separately;
3) a plurality of driving mechanisms can be installed simultaneously, bigger actuating force is provided;
4) simplified electromagnetic repulsion force mechanism use in the use of divide-shut brake maintaining body;
5) simple in structure, adopt SF
6Dielectric makes more compact structure;
6) series connection of the high-speed switch that the utility model provided is used in the high voltage direct current circuit breaker that namely can be applicable to voltage levels more, is used for quick divide-shut brake.
Description of drawings
Fig. 1 is the structure chart that dc circuit breaker is used high-speed switch;
Fig. 2 is linkage force analysis figure among the utility model embodiment;
Fig. 3 is isolating switch and grading resistor schematic diagram in parallel among the utility model embodiment;
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As Fig. 1, a kind of dc circuit breaker high-speed switch is provided, described high-speed switch comprises major loop mechanism, electromagnetic repulsion force mechanism, control loop and buffering maintaining body; Described major loop mechanism is connected with control loop by electromagnetic repulsion force mechanism, and described electromagnetic repulsion force mechanism is connected with described buffering maintaining body, and described buffering maintaining body is fixed on the horizontal plane by the pre-embedded bolt mode.
Described major loop mechanism comprises metal enclosed container 3, insulating sleeve 5, grading resistor, isolating switch 4, insulation rotating shaft 6 and support A; Described isolating switch 4, insulation rotating shaft 6 and support A all place described metal enclosed container 3 inside, and described grading resistor is in parallel with isolating switch 4; The moving contact of described isolating switch 4 is fixed in the insulation rotating shaft 6; One end of described insulation rotating shaft 6 is connected with the linkage 2 that passes metal enclosed container 3; Described insulation rotating shaft 6 is supported by support A, and described support A is fixed on metal enclosed container 3 bottoms.
The number of described insulating sleeve 5 is 2 times of described isolating switch 4 numbers, and described grading resistor number equates with the number of isolating switch 4.
Described insulating sleeve 5 is installed in by the mode that is threaded on the sidewall of described metal enclosed container 3, and the one end is connected with isolating switch 4, and the insulating sleeve 5 of the other end and series connection with it is connected.
Be filled with SF6 gas in the described metal enclosed container 3.
Described electromagnetic repulsion force mechanism comprises switching winding a
18, closing coil a
29, copper dish connecting rod, support B and linkage 2; Described copper dish connecting rod comprises copper dish 12 and connecting rod 7; Described switching winding a
18 and closing coil a
29 all fix by described support B, and described connecting rod 7 connects described linkage 2, and it passes switching winding a from top to bottom successively
18, copper dish 12 and closing coil a
29 are connected with the tripping spring 10 of described buffering maintaining body.
Described control loop comprises electronic monitoring module 1 and discharge loop; Described discharge loop comprises storage capacitor 13, and described electronic monitoring module 1 connects described electromagnetic repulsion force mechanism by discharge loop.Electronic monitoring module 1 comprises current transformer, single-chip microcomputer and light-operated switch, adopts single-chip microcomputer to gather electric current and control, and light-operated switch is connected in the discharge loop, with 13 discharges of control storage capacitor.
Described buffering maintaining body comprises cushion rubber bumper, tripping spring 10 and base 11; Described cushion rubber bumper places described metal enclosed container 3 inwalls, and described tripping spring 10 is fixed on the horizontal plane by base 11.
The dc circuit breaker that the utility model provides with the high-speed switch course of work is:
When A, normally, isolating switch 4 closures, its moving contact is fixed in the insulation rotating shaft 6, is connected in the circuit.
B, when needing circuit to cut-off, the discharge loop of triggering and conducting storage capacitor 13 at first, storage capacitor 13 is to switching winding a
18 discharge generation continue the pulse current of several ms.
C, copper dish 12 are subjected to electromagnetic repulsion force F because of inductive loop
1The effect motion drives linkage 2 simultaneously rapidly, and contact pressure is F
2, as shown in Figure 2.A few ms in the time electromagnetic repulsion force produce less stroke L
1, form than large opening L between isolating switch 4 contacts because its linkage 2 makes
2, with the tolerance high voltage.
Cushion rubber bumper is installed in D, the metal enclosed container 3 insulation rotating shaft 6 is slowed down, tripping spring 10 provides the separating brake confining force, finishes separating brake.Isolating switch 4 grading resistors in parallel make the even pressure-bearing of each fracture, and as shown in Figure 3, R represents grading resistor, and k represents isolating switch.
When E, combined floodgate, closing coil a
29 are subjected to the pulse current effect, and the electromagnetic repulsion force of generation makes isolating switch 4 closures, cushion rubber bumpers are installed in the metal enclosed container 3 insulation rotating shaft 6 is slowed down, and the pressure between contact provides closing retention force simultaneously, finishes combined floodgate.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although with reference to above-described embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1. dc circuit breaker high-speed switch, it is characterized in that: described high-speed switch comprises major loop mechanism, electromagnetic repulsion force mechanism, control loop and buffering maintaining body; Described major loop mechanism is connected with control loop by electromagnetic repulsion force mechanism, and described electromagnetic repulsion force mechanism is connected with described buffering maintaining body, and described buffering maintaining body is fixed on the horizontal plane by the pre-embedded bolt mode.
2. dc circuit breaker high-speed switch according to claim 1 is characterized in that: described major loop mechanism comprises metal enclosed container, insulating sleeve, grading resistor, isolating switch, insulation rotating shaft and support A; Described isolating switch, insulation rotating shaft and support A all place described metal enclosed internal tank, and described grading resistor is in parallel with isolating switch; The moving contact of described isolating switch is fixed in the insulation rotating shaft; One end of described insulation rotating shaft is connected with the linkage that passes metal enclosed container; Described insulation rotating shaft is supported by support A, and described support A is fixed on metal enclosed container bottom.
3. dc circuit breaker high-speed switch according to claim 2, it is characterized in that: the number of described insulating sleeve is 2 times of described isolating switch number, and described grading resistor number equates with the number of isolating switch.
4. dc circuit breaker high-speed switch according to claim 2, it is characterized in that: described insulating sleeve is installed on the sidewall of described metal enclosed container by the mode that is threaded, the one end is connected with isolating switch, and the insulating sleeve of the other end and series connection with it is connected.
5. dc circuit breaker high-speed switch according to claim 2 is characterized in that: be filled with SF in the described metal enclosed container
6Gas.
6. dc circuit breaker high-speed switch according to claim 1 is characterized in that: described electromagnetic repulsion force mechanism comprises switching winding a
1, closing coil a
2, copper dish connecting rod, support B and linkage; Described copper dish connecting rod comprises copper dish and connecting rod; Described switching winding a
1With closing coil a
2All fix by described support B, described connecting rod connects described linkage, and it passes switching winding a from top to bottom successively
1, copper dish and closing coil a
2Be connected with the tripping spring of described buffering maintaining body.
7. dc circuit breaker high-speed switch according to claim 1, it is characterized in that: described control loop comprises electronic monitoring module and discharge loop; Described discharge loop comprises storage capacitor, and described electronic monitoring module connects described electromagnetic repulsion force mechanism by discharge loop.
8. dc circuit breaker high-speed switch according to claim 1, it is characterized in that: described buffering maintaining body comprises cushion rubber bumper, tripping spring and base; Described cushion rubber bumper places described metal enclosed container inner wall, and described tripping spring is fixed on the horizontal plane by base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025343 CN203165787U (en) | 2013-01-17 | 2013-01-17 | Quick switch for direct current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025343 CN203165787U (en) | 2013-01-17 | 2013-01-17 | Quick switch for direct current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203165787U true CN203165787U (en) | 2013-08-28 |
Family
ID=49026952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320025343 Expired - Lifetime CN203165787U (en) | 2013-01-17 | 2013-01-17 | Quick switch for direct current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203165787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117188A (en) * | 2013-01-17 | 2013-05-22 | 国网智能电网研究院 | High-speed switch for direct current breaker |
-
2013
- 2013-01-17 CN CN 201320025343 patent/CN203165787U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117188A (en) * | 2013-01-17 | 2013-05-22 | 国网智能电网研究院 | High-speed switch for direct current breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 102209 Beijing City, Changping District science and Technology Park in the future smart grid research institute hospital Co-patentee after: CHINA-EPRI ELECTRIC POWER ENGINEERING Co.,Ltd. Patentee after: GLOBAL ENERGY INTERCONNECTION Research Institute Co-patentee after: State Grid Corporation of China Address before: 102211 Beijing city Changping District Xiaotangshan town big East Village Road No. 270 (future technology city) Co-patentee before: CHINA-EPRI ELECTRIC POWER ENGINEERING Co.,Ltd. Patentee before: STATE GRID SMART GRID Research Institute Co-patentee before: State Grid Corporation of China |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170526 Address after: 102209 Beijing City, Changping District science and Technology Park in the future smart grid research institute hospital Co-patentee after: State Grid Corporation of China Patentee after: GLOBAL ENERGY INTERCONNECTION Research Institute Address before: 102209 Beijing City, Changping District science and Technology Park in the future smart grid research institute hospital Co-patentee before: CHINA-EPRI ELECTRIC POWER ENGINEERING Co.,Ltd. Patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co-patentee before: State Grid Corporation of China |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |