CN202276178U - Charging device for direct current breaker - Google Patents
Charging device for direct current breaker Download PDFInfo
- Publication number
- CN202276178U CN202276178U CN201120370990XU CN201120370990U CN202276178U CN 202276178 U CN202276178 U CN 202276178U CN 201120370990X U CN201120370990X U CN 201120370990XU CN 201120370990 U CN201120370990 U CN 201120370990U CN 202276178 U CN202276178 U CN 202276178U
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- Prior art keywords
- charging device
- charging
- rectifier
- capacitor set
- circuit breaker
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- Expired - Lifetime
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- 239000003990 capacitor Substances 0.000 claims abstract description 35
- 238000002474 experimental method Methods 0.000 abstract description 8
- 230000004044 response Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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Abstract
The utility model provides a charging device for a direct current breaker. The charging device comprises a capacitor set, a charging device, a three-phase transformation rectifier, and a grounding circuit. A three-phase power supply accessed from a transformer is rectified by the charging device via a three-phase thyristor rectifier, and an output charging direct current is changed through adjustment of the trigger angle of a thyristor. The automatic adjustment of the charging current and the three-phase symmetry adjusting are realized through a closed loop feedback mode. When a charging pre-determined value is reached, the charging device and the capacitor set are disconnected via a charging switch, and the charging device is protected without being affected by other experiment links. After the experiment is finished, the residual energy of the capacitor set is discharged via the grounding switch and a grounding resistor. According to the charging device of the utility model, the capacitor set is charged via a constant current mode, so that abrupt changes on the capacitor set are effectively prevented, and the safety of the charging device and the safety of the capacitors are guaranteed. The thyristor rectifier is utilized, wherein the rectification efficiency is high and the response speed is fast.
Description
Technical field
The utility model belongs to the field that discharges and recharges of dc circuit breaker, specifically relates to a kind of dc circuit breaker and uses charging device.
Background technology
Dc circuit breaker is a very important and imperative equipment in the dc fields equipment.China's dc circuit breaker, long-term dependence on import, external producer carries out blockade on new techniques to its key technology especially, has limited the development of China's dc circuit breaker research and development level.The test capability deficiency of domestic dc circuit breaker also becomes the key factor that influences its development.Because dc circuit breaker fails to domesticize, its high purchase cost has restricted the ability that China's dc fields system integration is domesticized.Based on above present situation, the independent research of dc circuit breaker has enormous function to the development of China's direct current transportation technology.
In order to improve the passive situation of the long-term dependence on import of China's dc circuit breaker, the independent research of dc circuit breaker and through engineering approaches are built significant to China's dc fields.For the design research and development of dc circuit breaker, its test capability construction is arisen at the historic moment.In the dc circuit breaker experimentation; Charging device adopts the capacitor group more, because the electric capacity voltage can not be suddenlyd change the moment that the mode of employing constant voltage charge is beginning to charge; Can make the instantaneous increase of du/dt; And the damage charging device makes reduce the useful life of charging device, therefore researches and develops a kind of long service life, has bigger economic worth at the be put to the test charging device that is used for the dc circuit breaker experiment of influence of experimental stage.
The utility model content
The purpose of the utility model is to propose a kind of dc circuit breaker and uses charging device, is used for the experiment of dc circuit breaker direct current disjunction, and charging device can be accomplished charge and discharge process fast, satisfies the demand of dc circuit breaker experiment.
For realizing the foregoing invention purpose, the technical scheme that the utility model adopts is:
A kind of dc circuit breaker is used charging device; Its improvements be said charging device comprise rectifier, transformer, be connected in said rectifier DC output charge switch, with charge switch series capacitors group, earth resistance and earthed switch, said earth resistance is afterwards parallelly connected with said capacitor group with the earthed switch series connection.
Wherein, said rectifier is the three-phase thyristor rectifier.
Wherein, said capacitor group is several capacitor parallel connections.
The beneficial effect of the utility model is:
1, utilization constant current mode is charged to the capacitor group, has effectively prevented the sudden change of du/dt on the capacitor group, helps the safety of charging device;
2, after charging was accomplished, physics broke off the connection between charging device and the capacitor group, effectively protected the be not put to the test influence of process of charging device;
3, utilization silicon controlled rectifier, rectification efficiency is high, and response speed is fast.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the application of capacitor group constant current charger in the test loop;
Fig. 2 is a capacitor group constant current charge principle;
Embodiment
The utility model discloses a kind of dc circuit breaker with capacitor group constant current charger, charging device adopts the method for constant current charge.Be illustrated in figure 1 as the application of capacitor group constant current charger in the test loop, in dc circuit breaker electric current disjunction test, carry out constant current charge for the capacitor group, monitor and adjust the size of charging current in real time through the thyristor three-phase rectifier.The capacitor group is that a plurality of capacitors compose in parallel.
Capacitor group constant current charger carries out rectification to the three phase mains that inserts from transformer through the three-phase thyristor rectifier, changes the size of output charging direct current through the size of regulating the thyristor trigger angle; Capacitor group constant current charge principle is as shown in Figure 2, accomplishes the automatic adjusting and the symmetric adjustment of three-phase of charging current value through the mode of close-loop feedback; After reaching the charging predetermined value, come being connected between deenergization and the capacitor group, protect charging device not receive the influence of other experiment links through turn off charge switch; After experiment finishes, accomplish releasing of capacitor group dump energy through earthed switch and earth resistance.
The charging device circuit is that three-phase transformer connects being electrically connected of rectifier.When charging for the capacitor group; The maximum charging current value that allows at first is set, capacitor group charging target voltage values is set, the charge switch of closed rectifier DC output is the charging of capacitor group; After voltage to be charged reaches predetermined value; Charge switch between deenergization and the capacitor group, the storage of capacitor group energy finishes, and gets into the dc circuit breaker experimental stage.After the dc circuit breaker experiment is accomplished, connect the earthed switch of capacitor group, dump energy is released through earth resistance.
The utility model is described according to specific exemplary embodiment here.It will be conspicuous under the scope that does not break away from the utility model, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment only is illustrative, rather than to the restriction of the scope of the utility model, the scope of the utility model is by appended claim definition.
Claims (3)
1. a dc circuit breaker is used charging device; It is characterized in that said charging device comprise rectifier, transformer, be connected in said rectifier DC output charge switch, with charge switch series capacitors group, earth resistance and earthed switch, said earth resistance is afterwards parallelly connected with said capacitor group with the earthed switch series connection.
2. a kind of dc circuit breaker as claimed in claim 1 is used charging device, it is characterized in that said rectifier is the three-phase thyristor rectifier.
3. a kind of dc circuit breaker as claimed in claim 1 is used charging device, it is characterized in that said capacitor group is several capacitor parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120370990XU CN202276178U (en) | 2011-09-30 | 2011-09-30 | Charging device for direct current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120370990XU CN202276178U (en) | 2011-09-30 | 2011-09-30 | Charging device for direct current breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202276178U true CN202276178U (en) | 2012-06-13 |
Family
ID=46196515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120370990XU Expired - Lifetime CN202276178U (en) | 2011-09-30 | 2011-09-30 | Charging device for direct current breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202276178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065260A (en) * | 2014-06-04 | 2014-09-24 | 华中科技大学 | High-voltage pulse charging device for mains supply |
-
2011
- 2011-09-30 CN CN201120370990XU patent/CN202276178U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065260A (en) * | 2014-06-04 | 2014-09-24 | 华中科技大学 | High-voltage pulse charging device for mains supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140403 Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140403 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140403 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |