CN106877276A - Reclosing device - Google Patents
Reclosing device Download PDFInfo
- Publication number
- CN106877276A CN106877276A CN201710157516.0A CN201710157516A CN106877276A CN 106877276 A CN106877276 A CN 106877276A CN 201710157516 A CN201710157516 A CN 201710157516A CN 106877276 A CN106877276 A CN 106877276A
- Authority
- CN
- China
- Prior art keywords
- breaker
- switch
- current sensor
- reclosing
- controller
- 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.)
- Withdrawn
Links
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
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of reclosing device.It includes the breaker (2) being serially connected between bus terminal (1) and branch road terminal (7), and with breaker (2), the controller (6) of the secondary side terminal of branch current sensor (9) electrical connection, the two ends of breaker (2) are connected in parallel to the switch (3) by concatenating, the protection branch road of impedor (4) and current sensor (5) composition, wherein, switch (3), current sensor (5) is electrically connected with controller (6), before breaker (2) reclosing, controller (6) elder generation's closure switch (3), output further according to current sensor (5) judges, if its≤branch road (8) normally run when maximum operating currenbt, then combined floodgate breaker (2), otherwise disconnect switch (3).It avoids the reclosing under permanent short circuit accident, has prevented the infringement that short circuit current is caused to relevant devices such as bus, switch, cables again.
Description
Technical field
The present invention relates to a kind of closing device, especially a kind of reclosing device.
Background technology
At present, the need for based on code and actual motion, the breaker in power supply and distribution of electric power net transformer station of China outgoing line cabinet
It is both needed to possess reclosing function, i.e., after outlet branch road is short-circuited accident, first breaking circuit breaker is spaced an of short duration time
Reclosing is once again afterwards.If instantaneity is short-circuit, short circuit accident point disappears, reclosing success；If permanent short circuit thing
Therefore it is necessary to separating brake again at once, such case is unsuccessful reclosing.During unsuccessful reclosing, system busbar and accident
Point will again pass through short circuit current, and this will cause further damage to the relevant devices such as bus, switch, cable and accident point
Evil, while will also cause the unstable of system voltage, expands the scope of forced outage, the infringement of accident is magnified.
The content of the invention
The technical problem to be solved in the present invention is to overcome weak point of the prior art, there is provided one kind has to accident point
State carry out the reclosing device of anticipation.
Be to solve technical problem of the invention, the technical scheme for being used for：Reclosing device includes being connected in series in mother
Breaker between line terminals and branch road terminal, and output end electrically connected with the control end of breaker, input and branch current
The controller of the secondary side terminal electrical connection of sensor, particularly,
The two ends of the breaker are connected in parallel to protection branch road, switch, impedance that the protection branch route is connected in series
Device and current sensor are constituted, wherein, the control end of switch is electrically connected with the output end of controller, the secondary side of current sensor
Electrically connected with the input of controller, before breaker reclosing, controller elder generation closure switch, further according to current sensor
Output judges, if its≤maximum operating currenbt of branch road when normally running, close a floodgate breaker, otherwise disconnects switch.
As the further improvement of reclosing device：
Preferably, it is mechanical contact switch to switch, or electronic non-contact switch.
Preferably, impedor is one or two mixtures in resistive impedor, emotional resistance device.
Preferably, the resistance of resistive impedor is 10-1000 Ω.
Preferably, current sensor is electromagnetic current transducer, or current divider, or electronic current mutual inductor, or light
Fiber current sensor.
Preferably, controller is comparator, or single-chip microcomputer, or digital signal processor, or microcomputer.
Beneficial effect relative to prior art is：
It is of the invention before breaker reclosing after such structure, by first closing the switch in protection branch road,
And anticipation is carried out to short circuit accident point, it is to avoid and the reclosing under permanent short circuit accident, prevent short circuit current again to mother
The infringement that the relevant devices such as line, switch, cable are caused.
Brief description of the drawings
Fig. 1 is a kind of basic circuit structure schematic diagram of the invention.
Specific embodiment
Preferred embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, the composition of reclosing device is as follows：
Breaker 2 is connected in series between bus terminal 1 and branch road terminal 7, the two ends of breaker 2 are connected in parallel to protection branch
Road；Wherein, the control end of breaker 2 is electrically connected with the output end of controller 6.
Switch 3, impedor 4 and the current sensor 5 that protection branch route is connected in series are constituted；Wherein, the control end of switch 3
Output end with controller 6 is electrically connected, and the secondary side of current sensor 5 is electrically connected with the input of controller 6, switch therein
3 is mechanical contact switch (or electronic non-contact switch), and impedor 4 is resistance 10-1000 Ω (by the voltage class of branch road
It is determined that) resistive impedor (or one or two mixtures in resistive impedor, emotional resistance device), current sensor
5 is electromagnetic current transducer (or current divider, or electronic current mutual inductor, or fibre optic current sensor).
The input of controller 6 is also electrically connected with the secondary side terminal 9 of branch current sensor；Wherein, controller 6 is monolithic
Machine (or comparator, or digital signal processor, or microcomputer).
When using, only the bus terminal 1 of the present apparatus and branch road terminal 7 need to be accessed power supply and distribution of electric power net transformer station outgoing line cabinet
And between outlet branch road.
When reclosing breaker 2 is needed, the first closure switch 3 of controller 6 of the present apparatus, further according to the defeated of current sensor 5
Go out to determine, will current sensor 5 output with the branch road 8 normally run when maximum operating currenbt --- branch current
The maximum output that the secondary side terminal 9 of sensor once had (or artificial restriction) is compared：If its≤branch road 8 normally run when
Maximum operating currenbt, then show that short circuit accident point disappears, combined floodgate breaker 2；Otherwise show that short circuit accident point is still present, it is impossible to
Combined floodgate breaker 2, can only disconnect switch 3.
Obviously, those skilled in the art can carry out various changes and modification without de- to reclosing device of the invention
From the spirit and scope of the present invention.So, if to it is of the invention these modification and modification belong to the claims in the present invention and its
Within the scope of equivalent technologies, then the present invention is also intended to comprising these changes and modification.
Claims (6)
1. a kind of reclosing device, including the breaker (2) between bus terminal (1) and branch road terminal (7) is connected in series in, and
The control that output end is electrically connected with the control end of breaker (2), input is electrically connected with the secondary side terminal of branch current sensor (9)
Device (6) processed, it is characterised in that：
The two ends of the breaker (2) are connected in parallel to protection branch road, switch (3), resistance that the protection branch route is connected in series
Anti- device (4) and current sensor (5) are constituted, wherein, the control end for switching (3) is electrically connected with the output end of controller (6), electric current
The secondary side of sensor (5) is electrically connected with the input of controller (6), and before breaker (2) reclosing, controller (6) is first
Closure switch (3), further according to current sensor (5) output judge, if its≤branch road (8) normally run when maximum functional electricity
Stream, then combined floodgate breaker (2), otherwise disconnect switch (3).
2. reclosing device according to claim 1, it is characterized in that switch (3) is mechanical contact switch, or electronic type
Noncontacting switch.
3. reclosing device according to claim 1, it is characterized in that impedor (4) be resistive impedor, emotional resistance device
In one or two mixtures.
4. reclosing device according to claim 3, it is characterized in that the resistance of resistive impedor is 10-1000 Ω.
5. reclosing device according to claim 1, it is characterized in that current sensor (5) is electromagnetic current transducer,
Or current divider, or electronic current mutual inductor, or fibre optic current sensor.
6. reclosing device according to claim 1, it is characterized in that controller (6) is comparator, or single-chip microcomputer, or numeral
Signal processor, or microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710157516.0A CN106877276A (en) | 2017-03-16 | 2017-03-16 | Reclosing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710157516.0A CN106877276A (en) | 2017-03-16 | 2017-03-16 | Reclosing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106877276A true CN106877276A (en) | 2017-06-20 |
Family
ID=59172448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710157516.0A Withdrawn CN106877276A (en) | 2017-03-16 | 2017-03-16 | Reclosing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106877276A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742033A (en) * | 2017-10-24 | 2018-02-27 | 国家电网公司 | For calculating the cable connector simulation model of power distribution network reclosing control overvoltage in PSCAD |
| CN107919648A (en) * | 2017-12-20 | 2018-04-17 | 国家电网公司 | A kind of anti-self-adapting automatic recloser and method for overlapping impact |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296083Y (en) * | 1997-05-28 | 1998-10-28 | 秦文波 | High-voltage line short-circuit fault property judging and protecting device |
| CN101710685A (en) * | 2009-11-20 | 2010-05-19 | 深圳市科陆电子科技股份有限公司 | Intelligent recloser |
| US20170025845A1 (en) * | 2014-04-07 | 2017-01-26 | Energijski Konduktorji D.O.O. | Protective device and protective system for electrical circuits, and method for controlling the protective system |
| CN206697908U (en) * | 2017-03-16 | 2017-12-01 | 国网陕西省电力公司电力科学研究院 | Reclosing device |
-
2017
- 2017-03-16 CN CN201710157516.0A patent/CN106877276A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296083Y (en) * | 1997-05-28 | 1998-10-28 | 秦文波 | High-voltage line short-circuit fault property judging and protecting device |
| CN101710685A (en) * | 2009-11-20 | 2010-05-19 | 深圳市科陆电子科技股份有限公司 | Intelligent recloser |
| US20170025845A1 (en) * | 2014-04-07 | 2017-01-26 | Energijski Konduktorji D.O.O. | Protective device and protective system for electrical circuits, and method for controlling the protective system |
| CN206697908U (en) * | 2017-03-16 | 2017-12-01 | 国网陕西省电力公司电力科学研究院 | Reclosing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107742033A (en) * | 2017-10-24 | 2018-02-27 | 国家电网公司 | For calculating the cable connector simulation model of power distribution network reclosing control overvoltage in PSCAD |
| CN107919648A (en) * | 2017-12-20 | 2018-04-17 | 国家电网公司 | A kind of anti-self-adapting automatic recloser and method for overlapping impact |
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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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Jian Inventor after: Zhang Zhihua Inventor after: Rui Jun Inventor after: Tang Chunlin Inventor after: Yu Yingang Inventor before: Rui Jun Inventor before: Tang Chunlin Inventor before: Yu Yingang |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20170809 Address after: 710100 No. 669, middle route, Xi'an, Shaanxi, Changan District Applicant after: Electric Power Research Institute, State Grid Shaanxi Electric Power Company Applicant after: Anhui electric technology Limited by Share Ltd Address before: Yonghe Road, high tech Development Zone, Hefei city of Anhui Province, No. 99 230031 Applicant before: Anhui electric technology Limited by Share Ltd |
|
| TA01 | Transfer of patent application right | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170620 |
|
| WW01 | Invention patent application withdrawn after publication |