CN105932652A - High-efficiency and high-speed current-limiting actuator - Google Patents
High-efficiency and high-speed current-limiting actuator Download PDFInfo
- Publication number
- CN105932652A CN105932652A CN201610502146.5A CN201610502146A CN105932652A CN 105932652 A CN105932652 A CN 105932652A CN 201610502146 A CN201610502146 A CN 201610502146A CN 105932652 A CN105932652 A CN 105932652A
- Authority
- CN
- China
- Prior art keywords
- current
- measurement
- control unit
- isolator
- efficiency
- 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- Withdrawn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
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a high-efficiency and high-speed current-limiting actuator and relates to the field of safety control of circuits. The high-efficiency and high-speed current-limiting actuator comprises a fast isolator (A), a special high-voltage current limiter (B), an electronic transformer (C), a measurement and control unit (D), a high-capacity over-voltage absorber (E) and an isolating switch (G), wherein the isolating switch (G), the electronic transformer (C) and the fast isolator (A) are sequentially connected in series; the measurement and control unit (D) detects current signals at two ends of the electronic transformer (C) and is connected with the fast isolator (A); the special high-voltage current limiter (B) is connected with the fast isolator (A) in parallel; and one end of the high-capacity over-voltage absorber (E) is connected with the special high-voltage current limiter (B) and the other end is grounded. The high-efficiency and high-speed current-limiting actuator has the characteristics that the action is quickly and efficiently analyzed; the fault point is cut off; and the actuation time is extremely short.
Description
Technical field
The present invention relates to circuit safety control field, be specifically related to a kind of efficient high-speed current limiting action device.
Background technology
In recent years, along with country greatly develops, power industry is also advanced by leaps and bounds, and scale is the most increasing, different electric power systems
Between grid-connected connection also corresponding frequently the failed shorted of outlet also increases, short trouble impacts whole electrical network, makes electric power safety
There is hidden danger.
Summary of the invention
It is an object of the present invention to provide a kind of efficient high-speed current limiting action device, it has rapid efficient analysis action, and excises
Trouble point, the features such as movement time is extremely short.
In order to solve the problem existing for background technology, the present invention by the following technical solutions: it comprises quick-acting isolator
A, Special high-voltage current limiter B, electronic mutual inductor C, measurement and control unit D, Large Copacity surge absorber E, disconnecting switch G, keep apart
Close G, electronic mutual inductor C, quick-acting isolator A are sequentially connected in series, the electric current letter at measurement and control unit D detection electronic mutual inductor C two ends
Number, and be connected with quick-acting isolator A, Special high-voltage current limiter B is in parallel with quick-acting isolator A, Large Copacity surge absorber E one end
Connect Special high-voltage current limiter B, one end ground connection.
The useful point that the present invention has: the operation-current tolerance value of traditional switch, fails to reach higher cut-offfing
Ability, uses the present invention can protect the equipment such as 6-35kv main transformer, outlet short trouble in lower system in power system, is somebody's turn to do
Device rapid efficient analysis action, and excise trouble point, movement time is extremely short, the present invention can solve with present on problem, with
Time there is economy, stable, the feature such as effectively.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
With reference to Fig. 1, the present invention is connected in network system, and disconnecting switch G is Guan Bi in a situation of use, measurement and control unit
D is by special electronic mutual inductor C, and this transformer is the electronic mutual inductor that a kind of anti-saturation degree is high, can examine accurately
Measure the current signal in circuit, be nearly all the fast of micro-ohm rank by resistance value when measurement and control unit D detects normal current
Speed isolator A.Once have Large Copacity short circuit or transformer short-circuit in system, measurement and control unit D gathers electric mutual inductor C and detects
Current signal be analyzed judging, when reaching a default initiation value, measurement and control unit D will send actuating signal to quick every
To will disconnect at a high speed within the time of Microsecond grade from device A, quick-acting isolator A, while disconnecting, fault current is transferred to high pressure
Carrying out blow-out in fuse B, within the time of 2-3s, cut-off short circuit current, the overvoltage that blow-out produces is inhaled through overvoltage
Receive device E and absorb release.After whole action completes, measurement and control unit D gives a warning model, for outside.
Judge whether to be short-circuited at CT electronic mutual inductor C, utilize the instantaneous value of electric current and current changing rate with patrol
The relation of collecting, reaches condition the most simultaneously, and measurement and control unit D just sends actuating signal, prevents equipment from producing in the moment closed a floodgate and closes a floodgate
Shove, produce erroneous judgement.
Measurement and control unit of the present invention is to be close to electric mutual inductor C, the consume of anti-stop signal, and disconnecting switch G and overvoltage are inhaled
Receive device E dress and switch cubicle inlet wire and leading-out terminal, surge absorber E end ground connection, in order to quickly discharge residual voltage.
Breaking down in systems short circuit, before electric current is not up to peak value, by its high-speed breaking, short circuit current is transferred to high pressure
Carrying out blow-out in fuse, the overvoltage of generation is absorbed by efficient surge absorber and is discharged, energy handling failure, and eliminates event
Barrier.It is limited that common fuse comes disengagement failure current capability region, can not meet during big electric current.The connecting-disconnecting function of chopper has
Limit can not reach high breaking；Cut-off simultaneously in 60-200ms, during special short circuit fault, can not effectively protect equipment.Current-limiting reactor
Device decomposes absorption short circuit current, but too increases the idle consume in electrical network, and power grid quality declines.
Therefore the present invention can solve the existence of problem above, the most economical, stable, effective.
Claims (1)
1. an efficient high-speed current limiting action device, it is characterised in that it comprise quick-acting isolator (A), Special high-voltage current limiter (B),
Electronic mutual inductor (C), measurement and control unit (D), Large Copacity surge absorber (E), disconnecting switch (G), disconnecting switch (G), electronics
Formula transformer (C), quick-acting isolator (A) are sequentially connected in series, the electric current letter at measurement and control unit (D) detection electronic mutual inductor (C) two ends
Number, and be connected with quick-acting isolator (A), Special high-voltage current limiter (B) is in parallel with quick-acting isolator (A), and Large Copacity overvoltage absorbs
Device (E) one termination Special high-voltage current limiter (B), one end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610502146.5A CN105932652A (en) | 2016-06-30 | 2016-06-30 | High-efficiency and high-speed current-limiting actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610502146.5A CN105932652A (en) | 2016-06-30 | 2016-06-30 | High-efficiency and high-speed current-limiting actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932652A true CN105932652A (en) | 2016-09-07 |
Family
ID=56829849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610502146.5A Withdrawn CN105932652A (en) | 2016-06-30 | 2016-06-30 | High-efficiency and high-speed current-limiting actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932652A (en) |
-
2016
- 2016-06-30 CN CN201610502146.5A patent/CN105932652A/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103199505B (en) | Output short-circuit protection circuit for high tension battery | |
| CN201656456U (en) | Supergrid short-circuit current limiting device | |
| CN205123243U (en) | Lightning protection surge protector | |
| CN204179751U (en) | For the protective relaying device that control loop digitlization monitors | |
| CN204205578U (en) | A kind of efficient high-speed current limiting action device | |
| CN203119217U (en) | A fault-arc temperature detecting plug/socket | |
| CN203193261U (en) | Protection circuit for output short circuit of high-voltage battery pack | |
| CN103545785B (en) | Power supply MOV lightning protection device failure of removal electric current cycle monitoring device and method | |
| CN203193237U (en) | Power management unit capable of automatically reclosing | |
| CN203941249U (en) | A kind of lightning protection detection module | |
| CN206977035U (en) | A kind of device for reducing high voltage electric equipment detonation damage | |
| CN105932652A (en) | High-efficiency and high-speed current-limiting actuator | |
| CN105896459A (en) | High-efficiency high-speed current-limiting actuator | |
| CN105896493A (en) | High-efficiency and high-speed current limiting actuator | |
| CN106129956A (en) | A kind of efficient high-speed current limiting action device | |
| CN106129955A (en) | A kind of novel action device | |
| CN105958453A (en) | High-efficiency high-speed current-limiting actuator | |
| CN105958451A (en) | Actuator with current limiting effect | |
| CN106026042A (en) | Novel motion device | |
| CN106026043A (en) | High efficiency high speed current limit motion device | |
| CN201726124U (en) | Large current quick by-pass protection device | |
| CN205355804U (en) | Overvoltage suppressing device | |
| CN104821562A (en) | High-efficient high-speed current-limiting actuator | |
| CN104852367A (en) | Actuator with current-limiting effect | |
| CN104836193A (en) | Novel actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160907 |
|
| WW01 | Invention patent application withdrawn after publication |