CN111478278B - Crimping type direct current breaker assembly - Google Patents
Crimping type direct current breaker assembly Download PDFInfo
- Publication number
- CN111478278B CN111478278B CN202010391872.0A CN202010391872A CN111478278B CN 111478278 B CN111478278 B CN 111478278B CN 202010391872 A CN202010391872 A CN 202010391872A CN 111478278 B CN111478278 B CN 111478278B
- Authority
- CN
- China
- Prior art keywords
- control device
- crimping
- compression
- diode bridge
- assembly
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
-
- 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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
Landscapes
- Breakers (AREA)
Abstract
The invention discloses a crimping type direct current breaker assembly, wherein: the diode bridge component comprises at least four crimping type diodes which are connected with each other in a bridging mode, and a first crimping type control device and a second crimping type control device which are connected in parallel are connected in an access mode; the control system is used for controlling the first pressure welding type control device to be switched off and the second pressure welding type control device to be switched off; the crimping component is used for transmitting stress to the diode bridge component, the first crimping control device and the second crimping control device; and the diode bridge component, the first compression joint type control device and the second compression joint type control device enter a normal working state when the pressure applied to the diode bridge component, the first compression joint type control device and the second compression joint type control device reaches the corresponding pressure threshold value. By adopting the technical scheme, quick bidirectional on-off can be realized, and the high-speed bidirectional on-off switch has high through-current capacity and high reliability.
Description
Technical Field
The invention relates to the field of circuit devices, in particular to a direct current breaker.
Background
Direct current power supply systems are continuously developed, and people have increasingly higher requirements on the safety of the direct current power supply systems.
In an alternating current system, two natural zero-crossing points exist in alternating current in one period, and an alternating current circuit breaker can realize current on-off by utilizing the natural zero-crossing points of the current; in a direct current system, the direct current does not have a natural zero crossing point, and the high-voltage direct current arc cannot be eliminated, so that the direct current is far more difficult to switch on and off than the alternating current.
Meanwhile, with the further development of a direct-current power supply system, in a novel direct-current power system, most loads have the characteristic of dual attributes of loads and power supplies, the current and energy flow direction in the direct-current power system has the characteristic of uncertainty, and meanwhile, the on-off characteristic of a direct-current circuit breaker assembly needs to be researched.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a crimping type direct current breaker assembly.
The technical scheme is as follows: an embodiment of the present invention provides a crimping type dc circuit breaker assembly, including: first crimping formula controlling means, second crimping formula controlling means, diode bridge assembly, crimping subassembly and control system, wherein:
the diode bridge component comprises at least four crimping type diodes which are mutually connected in a bridging mode, a first diagonal point is respectively connected with a first direct current interface and a second direct current interface, and a second diagonal point is connected into a first crimping type control device and a second crimping type control device which are connected in parallel, wherein the current conduction directions of the first crimping type control device and the second crimping type control device are opposite;
the control system is respectively connected with the first compression joint type control device and the second compression joint type control device and is used for controlling the first compression joint type control device to be switched off and the second compression joint type control device to be switched off;
the crimping assembly is used for transmitting stress to the diode bridge assembly, the first crimping control device and the second crimping control device;
and the diode bridge component, the first compression joint type control device and the second compression joint type control device enter a normal working state when the pressure applied to the diode bridge component, the first compression joint type control device and the second compression joint type control device reaches the corresponding pressure threshold value.
Specifically, still include: the screw bolt is erected on the lower bottom plate and used for supporting the upper top plate.
Specifically, the upper top plate is provided with a round hole corresponding to the crimping component.
Specifically, the crimping assembly comprises a guide pillar, a disc spring and a pressure equalizing plate, the guide pillar is connected with the pressure equalizing plate, the pressure equalizing plate is used for transmitting pressure to a corresponding part, and the disc spring is sleeved in the guide pillar and clamped between the guide pillar and a round hole of the upper top plate.
Specifically, the range upon range of setting of crimping formula diode among the diode bridge type subassembly is connected through female arranging each other, diode bridge type subassembly and first direct current interface, second direct current interface and parallelly connected first crimping formula controlling means and second crimping formula controlling means are through female arranging the connection.
Specifically, the bus bar is provided with a waist hole for connecting with an external circuit on a connecting line between each component.
Specifically, the device further comprises insulating cushion blocks arranged between the crimping assembly and the diode bridge assembly and between the lower base plate and the diode bridge assembly.
Specifically, the diode bridge module further comprises a buffer branch, a first end of which is connected to the first direct current interface, and a second end of which is connected to the second direct current interface, and the buffer branch is used for dispersing current flowing through the diode bridge module.
Specifically, the buffer branch is provided with a capacitor device.
The power consumption device comprises a first direct current interface, a second direct current interface, a power consumption branch circuit and a power consumption control circuit, wherein the first end of the power consumption branch circuit is connected to the first direct current interface, and the second end of the power consumption branch circuit is connected to the second direct current interface and used for consuming power.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the quick bidirectional on-off can be realized, and the high-speed bidirectional on-off switch is high in through-current capacity and reliability.
Furthermore, the method can be used for researching the opening and closing characteristics of the direct current breaker assembly.
Drawings
Fig. 1 is a schematic structural diagram of a crimping type dc circuit breaker assembly provided in an embodiment of the present invention;
fig. 2 is a front view of a compression dc circuit breaker assembly provided in an embodiment of the present invention;
fig. 3 is a left side view of a compression dc circuit breaker assembly provided in an embodiment of the present invention;
fig. 4 is a top view of a compression dc circuit breaker assembly provided in an embodiment of the present invention;
FIG. 5 is a schematic structural view of a crimping assembly provided in an embodiment of the present invention;
FIGS. 6(a), (b) are front and top views of a diode bridge assembly provided in an embodiment of the present invention;
fig. 7 is an equivalent circuit diagram of a crimping type dc circuit breaker assembly provided in an embodiment of the present invention;
fig. 8 is a schematic current diagram of the crimping type dc circuit breaker assembly provided in the embodiment of the present invention during the opening process.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
See fig. 1-4.
An embodiment of the present invention provides a crimping type dc circuit breaker assembly 1, including: a first crimp style control device 14, a second crimp style control device 14, a diode bridge assembly 5, a crimp assembly 4, and a control system, wherein:
the diode bridge assembly 5 comprises at least four crimping diodes 15 connected with each other in a bridging manner, a first pair of corner points are respectively connected with a first direct current interface S1 and a second direct current interface S2, and a second pair of corner points are connected into a first crimping control device 14 and a second crimping control device 14 which are connected in parallel, wherein the current conducting directions of the first crimping control device 14 and the second crimping control device 14 are opposite;
the control system is respectively connected with the first crimping type control device 14 and the second crimping type control device 14 and is used for controlling the first crimping type control device 14 to be turned off and the second crimping type control device 14 to be turned off;
the crimping component 4 is used for transmitting stress to the diode bridge component 5, the first crimping control device 14 and the second crimping control device 14;
the diode bridge assembly 5, the first crimp-type control device 14 and the second crimp-type control device 14 enter a normal working state when the applied pressure reaches a corresponding pressure threshold value.
In specific implementation, the second diagonal point is connected to the first crimp-type control device 14 and the second crimp-type control device 14 which are connected in parallel, and the two ends of the first crimp-type control device 14 and the two ends of the second crimp-type control device 14 which are connected in parallel are respectively connected with the second diagonal point.
In the specific embodiment, at least four crimp diodes 15 are connected to each other in a bridge manner, and in the case where the four crimp diodes 15 form the diode bridge assembly 5 by bridging, the diodes are connected in reverse direction two by two.
In a specific implementation, the first dc interface S1 and the second dc interface S2 are interfaces of a dc electrical system, and when a current flow direction is uncertain, the current may flow from the first dc interface S1 to the second dc interface S2, or may flow from the second dc interface S2 to the first dc interface S1.
In a specific implementation, reference numeral 14 in the illustration includes two crimp-style control devices, any one of which may be a first crimp-style control device and the other one of which is a second crimp-style control device. The first crimp-style control device 14 and the second crimp-style control device 14 are fully-controlled power electronic devices that can be controlled to turn off.
In specific implementation, when the pressure applied to the diode bridge assembly 5 (the crimp-type diode 15), the first crimp-type control device 14, and the second crimp-type control device 14 reaches a corresponding pressure threshold, the diode bridge assembly enters a normal operating state, where the entering of the normal operating state means that the crimp-type diode 15 can be turned on when the voltage threshold is reached, the crimp-type control device 14 can be controlled to be turned on and off, and the crimp-type electronic component can be used in a circuit or an electronic device that needs to operate under pressure control.
In specific implementation, the direct current circuit breaker provided by the embodiment of the invention has the characteristic of symmetrical structure, is beneficial to parallel current sharing, and can realize quick two-way on-off.
In the embodiment of the invention, the method further comprises the following steps: the device comprises an upper top plate 2, a lower bottom plate 3 and a stud 8, wherein the stud 8 stands on the lower bottom plate 3 and is used for supporting the upper top plate 2.
In the embodiment of the present invention, the upper top plate 2 is provided with a circular hole corresponding to the crimping component 4.
In the embodiment of the invention, the crimping component 4 comprises a guide post 10, a disc spring 12 and a pressure equalizing plate 13, the guide post 10 is connected with the pressure equalizing plate 13, the pressure equalizing plate 13 is used for transmitting pressure to a corresponding component, and the disc spring 12 is sleeved in the guide post 10 and is clamped between the guide post 10 and a round hole of the upper top plate 2.
In particular implementations, the planar area of the pressure equalizing plate 13 is larger than the area of the bottom surface of the guide pillars 10, which helps to uniformly transmit the force to the corresponding components, i.e., the corresponding first crimp-style control device 14, second crimp-style control device 14, and diode bridge assembly 5 (crimp-style diode 15 therein).
See fig. 6(a) and 6 (b).
In the embodiment of the present invention, the crimping diodes 15 in the diode bridge assembly 5 are stacked and connected to each other through the bus bar 6, and the diode bridge assembly 5 is connected to the first dc interface S1, the second dc interface S2, and the first crimping control device 14 and the second crimping control device 14 connected in parallel through the bus bar 6.
In a specific implementation, the crimped diodes 15 in the diode bridge assembly 5 are stacked, two by two as shown in fig. 6(a), three by three, or four by four.
In the embodiment of the present invention, the bus bar 6 is provided with a waist hole 16 for connecting with an external circuit on a connection line between each component.
In specific implementation, one or more waist holes 16 are arranged on a connection line between each component, namely, between the first crimp-type control device 14, the second crimp-type control device 14 and the diode bridge assembly 5 (among the crimp-type diodes 15), so that the waist holes can be used for being connected with an external circuit, can be conveniently used for researching the breaking characteristics of the direct current breaker assembly 1 and changing the line, and has obvious advantages compared with a connection line mode of a direct current breaker adopted in the prior art.
In the embodiment of the present invention, the present invention further includes insulating spacers 7 disposed between the crimping component 4 and the diode bridge component 5, and between the lower plate 3 and the diode bridge component 5.
In specific implementation, the dc circuit breaker assembly 1 includes an upper top plate 2, a lower bottom plate 3, a crimping assembly 4, a diode bridge assembly 5, a busbar 6, and an insulating pad 7. The crimping component 4 penetrates out of the round hole of the upper top plate 2, and the diode bridge component 5 is arranged between the upper top plate 2 and the lower bottom plate 3 and connected through the busbar 6.
In the specific implementation, the upper top plate 2 and the lower bottom plate 3 are both provided with circular holes, as shown in fig. 3 to 4, and are connected by studs 8, the studs 8 are fixed by nuts 9, and the upper top plate 2 is provided with circular holes for the compression joint components 4 to pass through.
See fig. 5. In specific implementation, the crimping assembly 4 comprises a guide post 10, a screw 11, a disc spring 12 and a pressure equalizing plate 13, the guide post 10 penetrates out of the upper top plate 2 through a circular hole of the upper top plate 2, and the pressure equalizing plate 13 is connected with the guide post 10 through the screw 11.
In concrete implementation, because when direct current breaker during operation, have the heavy current and flow, in order to prevent the misleading of electric current, guarantee insulating, set up insulating cushion 7, insulating cushion 7 can be fixed through the locating pin.
Refer to fig. 7 and 8. In the embodiment of the present invention, the diode bridge module further includes a buffering branch, a first end of which is connected to the first dc interface S1, and a second end of which is connected to the second dc interface S2, for dispersing the current flowing through the diode bridge module 5.
In the embodiment of the invention, the buffer branch is provided with a capacitor device.
In the embodiment of the present invention, the power consumption branch is further included, and the first end of the power consumption branch is connected to the first dc interface S1, and the second end of the power consumption branch is connected to the second dc interface S2, so as to consume electric energy.
In a specific implementation, the buffering branch is connected in parallel to the first corner point of the diode bridge assembly 5, and the energy dissipation branch is connected in parallel to the first corner point of the diode bridge assembly 5.
In specific implementation, the energy consumption branch is equal to the overvoltage limiting branch, plays the roles of consuming energy and limiting voltage, and can be provided with an overvoltage limiting device similar to an arrester.
In a specific implementation, the topology of the buffer branch may be any one of a capacitor (C), a resistor-capacitor (RC), and a resistor-capacitor-diode (RCD).
In specific implementation, during normal current flowing, the first crimp-type control device 14 and the second crimp-type control device 14 are both in a conducting state, and two parallel branches in the current carrying branch carry current, iP1、iP2Flowing through the first and second crimp- style control devices 14 and 14, respectively, D1, D2, D3, and D4 are 4 crimp-style diodes 15 in the diode bridge assembly 5, respectively.
When a short-circuit fault occurs or a superior level issues an instruction and the direct current breaker assembly 1 needs to perform current breaking, the control system sends a turn-off signal to the first crimping type control device 14 and the second crimping type control device 14, and this stage corresponds to t in fig. 80A previous stage; the first crimp-style control device 14 and the second crimp-style control device 14 start to turn off, the current is transferred from the current carrying branch to the snubber branch (the snubber branch topology is described here by way of example as an RC topology), and the current iSThe voltage across the capacitive device rises by charging the capacitive device through the resistive device, this stage corresponding to t in fig. 20～t1A stage; when the voltage of the capacitor reaches the action threshold value of the arrester, the arrester MOV is conducted, the current is transferred to the energy consumption branch circuit, and the branch circuit current i is bufferedSReduced, dissipative branch current iMOVRising, this stage corresponding to t in FIG. 21～t2A stage; the current flows entirely through the arrester MOV and the dissipation of energy is accomplished by the MOV, this stage corresponding to t in FIG. 22The latter phase, whereby the disconnection is completed.
Claims (10)
1. A compression-type dc circuit breaker assembly, comprising: first crimping formula controlling means, second crimping formula controlling means, diode bridge assembly, crimping subassembly and control system, wherein:
the diode bridge component comprises at least four crimping type diodes which are mutually connected in a bridging mode, a first diagonal point is respectively connected with a first direct current interface and a second direct current interface, and a second diagonal point is connected into a first crimping type control device and a second crimping type control device which are connected in parallel, wherein the current conduction directions of the first crimping type control device and the second crimping type control device are opposite;
the control system is respectively connected with the first compression joint type control device and the second compression joint type control device and is used for controlling the first compression joint type control device to be switched off and the second compression joint type control device to be switched off;
the crimping assembly is used for transmitting stress to the diode bridge assembly, the first crimping control device and the second crimping control device;
and the diode bridge component, the first compression joint type control device and the second compression joint type control device enter a normal working state when the pressure applied to the diode bridge component, the first compression joint type control device and the second compression joint type control device reaches the corresponding pressure threshold value.
2. The crimped dc circuit breaker assembly of claim 1, further comprising: the screw bolt is erected on the lower bottom plate and used for supporting the upper top plate.
3. The compression-type dc circuit breaker assembly of claim 2, wherein the top plate is provided with a circular aperture corresponding to the compression-type assembly.
4. The compression joint type direct current breaker assembly according to claim 3, wherein the compression joint assembly comprises a guide post, a disc spring and a pressure equalizing plate, the guide post is connected with the pressure equalizing plate, the pressure equalizing plate is used for transmitting pressure to a corresponding component, and the disc spring is sleeved in the guide post and clamped between the guide post and a round hole of the upper top plate.
5. The dc compression link circuit breaker assembly of claim 4, wherein the compression link diodes of the diode bridge assembly are stacked and connected to each other via a bus bar, and the diode bridge assembly is connected to the first dc interface, the second dc interface, and the first compression link control device and the second compression link control device connected in parallel via the bus bar.
6. The compression dc breaker assembly of claim 5 wherein said busbar is provided with a waist hole for connection to an external circuit on a connection line between each component.
7. The compression-type dc circuit breaker assembly of claim 2, further comprising insulating spacers disposed between the compression-type assembly and the diode bridge assembly, and between the lower plate and the diode bridge assembly.
8. The direct current compression contact circuit breaker assembly of claim 1, further comprising a snubber shunt having a first terminal connected to the first direct current interface and a second terminal connected to the second direct current interface for dissipating current flowing through the diode bridge assembly.
9. The compression dc circuit breaker assembly according to claim 8, wherein said buffer branch is provided with a capacitive device.
10. The compression dc circuit breaker assembly according to claim 8, further comprising a power dissipating branch having a first end connected to the first dc interface and a second end connected to the second dc interface for dissipating electrical power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010391872.0A CN111478278B (en) | 2020-05-11 | 2020-05-11 | Crimping type direct current breaker assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010391872.0A CN111478278B (en) | 2020-05-11 | 2020-05-11 | Crimping type direct current breaker assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111478278A CN111478278A (en) | 2020-07-31 |
| CN111478278B true CN111478278B (en) | 2022-05-13 |
Family
ID=71764368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010391872.0A Active CN111478278B (en) | 2020-05-11 | 2020-05-11 | Crimping type direct current breaker assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111478278B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356411B (en) * | 2015-11-10 | 2018-03-13 | 南京南瑞继保电气有限公司 | A kind of bridge circuit, high voltage DC breaker and its control method |
-
2020
- 2020-05-11 CN CN202010391872.0A patent/CN111478278B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111478278A (en) | 2020-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102017384B (en) | A voltage source converter | |
| CN105659459A (en) | High voltage dc breaker | |
| CN105917431A (en) | Device for switching a direct current | |
| CN102138264A (en) | Device having a converter | |
| CN103795242A (en) | Switch arrangements and battery arrangements | |
| CN104701096A (en) | Direct current breaker bridge type module | |
| CN103354414A (en) | Parallel IGBT power unit | |
| CN108475911B (en) | Power supply control apparatus | |
| CN211089218U (en) | High-capacity high-reliability rapid power supply switching device | |
| CN103560774A (en) | Intelligent solid state transfer switch, processing method thereof and transfer switch control system | |
| CN103971965A (en) | Line current breaking device and control method thereof | |
| CN105958806A (en) | High-voltage sub-module based on MMC circuit topology | |
| CN111478278B (en) | Crimping type direct current breaker assembly | |
| CN107706906A (en) | Anti-back flow circuit and power supply redundancy circuit | |
| CN103650086B (en) | Switching device | |
| CN203537360U (en) | Intelligent solid state transfer switch and transfer switch control system | |
| CN114830461B (en) | Plug-in contact for preventing arcing during disconnection of a DC connection | |
| AU2019341286B2 (en) | Arc-extinguishing circuit and apparatus | |
| CN213093889U (en) | Output soft start switch control circuit of switching power supply | |
| CN203241913U (en) | High-power CPCI power module with redundancy function | |
| CN114830460A (en) | Technique for preventing generation of arc when breaking DC connection by using extension of wire composite | |
| CN103248015A (en) | Rapid short-circuit protection system for direct current bus of energy storage converter | |
| CN201813204U (en) | Main circuit structure of contactless compensated alternating current voltage stabilizer | |
| CN112152599A (en) | All-solid-state direct current circuit breaker | |
| CN101335138B (en) | Switching device with two controlled phases |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |