CN201444575U - Electric power system circuit breaker fracture puncture protection device - Google Patents
Electric power system circuit breaker fracture puncture protection device Download PDFInfo
- Publication number
- CN201444575U CN201444575U CN2009200282587U CN200920028258U CN201444575U CN 201444575 U CN201444575 U CN 201444575U CN 2009200282587 U CN2009200282587 U CN 2009200282587U CN 200920028258 U CN200920028258 U CN 200920028258U CN 201444575 U CN201444575 U CN 201444575U
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- circuit breaker
- power system
- electric power
- protection device
- system circuit
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- 230000004224 protection Effects 0.000 title claims abstract description 22
- 230000015556 catabolic process Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses an electric power system circuit breaker fracture puncture protection device. The device has the advantages that the structure is simple, the use is convenient, the fracture puncture of the circuit breaker can be effectively protected, and the like. The structure of the device comprises at least a group of circuit signal detection devices arranged on the circuit side of the circuit breaker, and the circuit signal detection device and the circuit breaker are all connected with a logic control device.
Description
Technical field
The utility model relates to a kind of breaker protection device, relates in particular to a kind of electric power system circuit breaker fracture breakdown protection device.
Background technology
Along with the development of electrical production, transmission line capability progressively increases, and the function of relaying protection and effect are constantly strengthened, and in avoiding the power system accident development and enlarging, plays a greater and greater role.In all kinds of protections of each electric pressure, main taking into account system ground connection and phase-to phase fault are not all considered the problem of electric power system circuit breaker fracture breakdown protection but up to the present.
In recent years; application along with a large amount of SF6 circuit breakers; the fault that fracture punctures takes place in the circuit SF6 circuit breaker of each electric pressure of transformer station often; but present all kinds of relaying protections all do not have detection and defencive function to this fault; cause accident to enlarge, develop into serious substation accident or main transformer and burn.
In carrying out intelligent grid research and build today, the relaying protection of electrical network is had higher requirement.The research and the application of electric power system circuit breaker fracture breakdown protection will improve the ability that it in time finds circuit breaker failure greatly, isolated fault in time, thus improve reliability of system operation.
Summary of the invention
The purpose of this utility model is exactly in order to address the above problem, and provides a kind of and has simple in structurely, easy to use, can effectively puncture the electric power system circuit breaker fracture breakdown protection device of advantages such as protecting to the fracture of circuit breaker.
For achieving the above object, the utility model adopts following technical scheme:
A kind of electric power system circuit breaker fracture breakdown protection device, it comprises at least one group of line signal checkout gear that is arranged on the circuit breaker line side, described line signal checkout gear all is connected with logic control device with circuit breaker.
Described line signal checkout gear is: current transformer (CT) device.
Described line signal checkout gear is: voltage transformer (PT) device.
The circuit-breaker status checkout gear is: from the circuit-breaker status checkout gear of circuit breaker control cubicle collection reflection circuit-breaker switching on-off location status auxiliary contact.
Electric power system circuit breaker fracture breakdown protection device of the present utility model is connected to the CT or the PT signal in circuit breaker line side exactly by collection, with circuit breaker disjunction position state signal at that time, carry out logic determines.If circuit breaker is in a minute position, when the CT in circuit breaker line side still has current signal (or the transmission line offside disconnects or distribution load circuit, PT still has voltage signal), show not disjunction or breakdown fault takes place of fracture, jump off the one-level circuit breaker.Otherwise if circuit breaker in a minute position, during the CT no signal current in circuit breaker line side (or the transmission line offside disconnects or distribution load circuit, PT no-voltage signal), shows fracture really at the disjunction state, system is normal.
The beneficial effects of the utility model are: electric power system circuit breaker fracture breakdown protection can realize on existing transformer station first and second Equipment Foundations that only increasing the logic determines software function in the relevant Microcomputer Protection (as transformer station's bus differential protection, main transformer differential protection etc.) of transformer station can realize.Utilize existing circuit breaker position status signal and circuit breaker line side CT current signal, the completion logic arbitration functions.This defencive function will improve its ability of in time finding circuit breaker failure greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein, 1. transformer station, 2. circuit breaker I, 3. line signal checkout gear, 4. logic control device, 5. circuit breaker II, 6. Load Substation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Embodiment 1:
Among Fig. 1, between transformer station 1 and Load Substation 6 is three-phase line, on three-phase line, be provided with circuit breaker I2 and circuit breaker II5, be provided with the current signal of CT signal supervisory instrument in circuit breaker I2 line side with detection line, circuit breaker all is connected with logic control device with the CT signal supervisory instrument, and logic control device is a computer.
Embodiment 2:
In the present embodiment, signal supervisory instrument is the PT signal supervisory instrument, and it is in order to the detection line voltage signal.All the other are identical with embodiment 1, repeat no more.
Electric power system circuit breaker fracture breakdown protection of the present utility model can realize on the secondary hardware foundation that only increasing the software logic arbitration functions can realize.Utilize existing circuit breaker position status signal and circuit breaker line side CT current signal, the completion logic arbitration functions.This defencive function will improve its ability of in time finding circuit breaker failure greatly.
Claims (3)
1. an electric power system circuit breaker fracture breakdown protection device is characterized in that it comprises at least one group of line signal checkout gear that is arranged on the circuit breaker line side, and described line signal checkout gear all is connected with logic control device with circuit breaker.
2. electric power system circuit breaker fracture breakdown protection device as claimed in claim 1 is characterized in that described line signal checkout gear is the CT device.
3. electric power system circuit breaker fracture breakdown protection device as claimed in claim 1 is characterized in that described line signal checkout gear is the PT device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200282587U CN201444575U (en) | 2009-07-08 | 2009-07-08 | Electric power system circuit breaker fracture puncture protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200282587U CN201444575U (en) | 2009-07-08 | 2009-07-08 | Electric power system circuit breaker fracture puncture protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201444575U true CN201444575U (en) | 2010-04-28 |
Family
ID=42549256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200282587U Expired - Lifetime CN201444575U (en) | 2009-07-08 | 2009-07-08 | Electric power system circuit breaker fracture puncture protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201444575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842087A (en) * | 2019-02-18 | 2019-06-04 | 苏州阿德文斯电子科技有限公司 | A kind of intelligent power protector |
-
2009
- 2009-07-08 CN CN2009200282587U patent/CN201444575U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109842087A (en) * | 2019-02-18 | 2019-06-04 | 苏州阿德文斯电子科技有限公司 | A kind of intelligent power protector |
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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 ELECTRIC NET CROP. Effective date: 20130314 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130314 Address after: 250100, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee after: Shandong Research Inst. of Electric Power Patentee after: State Grid Corporation of China Address before: 250100, No. 500, South Second Ring Road, Shizhong District, Shandong, Ji'nan Patentee before: Shandong Research Inst. of Electric Power |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100428 |
|
| CX01 | Expiry of patent term |