CN106129981B - A kind of excitation current limiter and excitation current-limiting circuit - Google Patents
A kind of excitation current limiter and excitation current-limiting circuit Download PDFInfo
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- CN106129981B CN106129981B CN201610657206.0A CN201610657206A CN106129981B CN 106129981 B CN106129981 B CN 106129981B CN 201610657206 A CN201610657206 A CN 201610657206A CN 106129981 B CN106129981 B CN 106129981B
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- conductor frame
- frame
- excitation current
- winding
- conductor
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- 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
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of excitation current limiter, including the first conductor frame disposed in parallel and the second conductor frame, the left frame of the left frame of the first conductor frame and the second conductor frame overlaps on the direction of plane where perpendicular to the first conductor frame.The invention also discloses a kind of excitation current-limiting circuit including above-mentioned excitation current limiter, further include be wound in the direct current winding of excitation current limiter with exchange winding.When circuit works normally, DC power supply is powered to direct current winding and carries out excitation, make the magnetic flux zero of the lap of the first conductor frame and the second conductor frame, in depth saturation state, especially lap is close to space permeability, so that the exchange winding reactance for making to be serially connected in route is equivalent to hollow reactance.When an error occurs, DC power supply is quickly cut off by dc switch, so that the first conductor frame and the second conductor frame be made to be in unsaturated state, the reactance being serially connected in alternating current circuit increases, and plays effective metering function.
Description
Technical field
The present invention relates to protection field of circuit technology to further relate to one kind and encourage more specifically to a kind of excitation current limiter
Magnetic current-limiting circuit.
Background technique
Connection current limiter is to be very easy to meet the difference of various circuits to play the role of protecting circuit in circuit
Choked flow requirement, the electric current more than rated current can be prevented to flow through load, ensure that electrical appliance will not be more than specified electricity
It works in the state of stream, the safety of electrical appliance can be effectively protected, extend the service life of electric appliance.
Current limiter usually used at present, the current limitation effect of itself is irregular, if be connected in excitation circuit,
Current limitation effect cannot can ensure more, and when use was both dangerous, also inconvenient.
In conclusion how to efficiently solve the bad problem of existing current limiter current limitation effect in excitation circuit, it is
Those skilled in the art's urgent problem at present.
Summary of the invention
In view of this, the first purpose of this invention is to provide a kind of excitation current limiter, the structure of the excitation current limiter
Design can efficiently solve the bad problem of existing current limiter current limitation effect in excitation circuit, second mesh of the invention
Be to provide a kind of excitation current-limiting circuit including above-mentioned excitation current limiter.
In order to reach above-mentioned first purpose, the invention provides the following technical scheme:
A kind of excitation current limiter, including the first conductor frame disposed in parallel and the second conductor frame, the right of the first conductor frame
The left frame of frame and the second conductor frame overlaps on the direction of plane where perpendicular to the first conductor frame.
Preferably, in above-mentioned excitation current limiter, the left frame of the left frame of the first conductor frame and the second conductor frame passes through set
Cylinder is fixedly connected.
Preferably, in above-mentioned excitation current limiter, the first conductor frame and the second conductor frame are specially the identical silicon steel of specification
Iron core conductor frame.
Excitation current limiter provided by the invention includes the first conductor frame disposed in parallel and the second conductor frame, the first conductor frame
Left frame and the left frame of the second conductor frame overlapped on the direction of plane where perpendicular to the first conductor frame.Using this
It when the excitation current limiter provided is provided, is overlapped by the corresponding side frame of the first conductor frame and the second conductor frame, side
Flux interaction between the first conductor frame and the second conductor frame, reduce relevant apparatus the space occupied, while also facilitating
Connection external circuit or outside winding etc..
In order to reach above-mentioned second purpose, the present invention also provides a kind of excitation current-limiting circuits:
A kind of excitation current-limiting circuit, including above-mentioned excitation current limiter further include the left side for being wound in the first conductor frame respectively
The direct current winding of the left frame of frame and the second conductor frame, winding arrangement form is identical, and direct current winding is all connected to include direct current
It further include the friendship for being wound in the left frame of left frame and the second conductor frame of the first conductor frame in the circuit of power supply and dc switch
Winding is flowed, exchange winding is connected to external communication circuit.
It preferably, further include the dead resistance for consuming the magnetic energy of direct current winding in above-mentioned excitation current-limiting circuit, consumption
The part in parallel that resistance and DC power supply and dc switch are composed in series.
Preferably, in above-mentioned excitation current-limiting circuit, direct current windings in series has filter.
Preferably, in above-mentioned excitation current-limiting circuit, filter is specially one of resistance, inductance, capacitor or a variety of
Combination.
Excitation current-limiting circuit provided by the invention includes above-mentioned excitation current limiter, further includes being wound in the first conductor frame respectively
Left frame and the second conductor frame left frame direct current winding, winding arrangement form is identical, and direct current winding is all connected to wrap
It further include the left side for being wound in the left frame and the second conductor frame of the first conductor frame in the circuit for including DC power supply and dc switch
The exchange winding of frame, exchange winding are connected to external communication circuit.
When using excitation current-limiting circuit provided by the invention, DC power supply is powered to direct current winding and carries out excitation, by straight
Stream winding technique direction makes the magnetic flux zero of the lap of the first conductor frame and the second conductor frame, makes the first conductor frame and second
Conductor frame is in depth saturation state, especially lap close to space permeability, thus make the exchange being serially connected in route around
Group reactance is equivalent to hollow reactance.Exchange winding is installed on the lap of the first conductor frame and the second conductor frame, and is serially connected with
In alternating current circuit, when an error occurs, DC power supply is quickly cut off by dc switch, so that the first conductor frame and second be made to lead
Body frame is in unsaturated state, and the reactance being serially connected in alternating current circuit increases, and plays effective metering function.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic view of the front view of excitation current limiter provided in an embodiment of the present invention；
Fig. 2 is the overlooking structure diagram of excitation current limiter provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of excitation current-limiting circuit provided in an embodiment of the present invention.
It is marked in attached drawing as follows:
First conductor frame 1, the second conductor frame 2, direct current winding 3, exchange winding 4, DC power supply 5, dc switch 6, consumption
Resistance 7, filter 8, sleeve 9.
Specific embodiment
The embodiment of the invention discloses a kind of excitation current limiter and excitation current-limiting circuits, to improve the safety of current-limiting operation
And reliability.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is the schematic view of the front view of excitation current limiter provided in an embodiment of the present invention, Fig. 2
For the overlooking structure diagram of excitation current limiter provided in an embodiment of the present invention.
The embodiment provides a kind of excitation current limiters, including the first conductor frame disposed in parallel 1 and second to lead
The left frame of body frame 2, the left frame of the first conductor frame 1 and the second conductor frame 2 is in the side perpendicular to 1 place plane of the first conductor frame
It overlaps upwards.When using excitation current limiter provided in this embodiment, pass through the phase of the first conductor frame 1 and the second conductor frame 2
The side frame answered overlaps, and facilitates the flux interaction between the first conductor frame 1 and the second conductor frame 2, reduces correlation
Device the space occupied, while also facilitating connection external circuit or outside winding etc..
In order to optimize the connection relationship of the first conductor frame 1 and the second conductor frame 2 in above-described embodiment, the first conductor frame 1
The left frame of left frame and the second conductor frame 2 is fixedly connected by sleeve 9.It is preferred that using sleeve 9 by the first conductor frame 1 and second
Conductor frame 2 is fixedly connected, so that the connection relationship of the two is more firm and close, when use is not easy to loosen, while sleeve 9 can be with
It is preferred that poly- magnetic material makes the magnetic flux of the lap of the first conductor frame 1 and the second conductor frame 2 obtain certain reinforcement.
In order to optimize the using effect of the first conductor frame 1 and the second conductor frame 2 in above-described embodiment, 1 He of the first conductor frame
Second conductor frame 2 is specially the identical silicon steel core conductor frame of specification.It is preferred that silicon steel core conductor frame is used, so that the two has
There is higher magnetic conductivity, and there is longer service life.
Referring to Fig. 3, Fig. 3 is the structural schematic diagram of excitation current-limiting circuit provided in an embodiment of the present invention.
The embodiment provides a kind of excitation current-limiting circuits, including above-mentioned excitation current limiter, further include twining respectively
It is around in the direct current winding 3 of the left frame of the first conductor frame 1 and the left frame of the second conductor frame 2, winding arrangement form is identical, directly
Stream winding 3 is all connected to include in the circuit of DC power supply 5 and dc switch 6, further includes the right for being wound in the first conductor frame 1
The exchange winding 4 of the left frame of frame and the second conductor frame 2, exchange winding 4 are connected to external communication circuit.
When using excitation current-limiting circuit provided by the above embodiment, DC power supply 5 is powered to direct current winding 3 and carries out excitation,
The magnetic flux zero for making the lap of the first conductor frame 1 and the second conductor frame 2 by 3 coiling direction of direct current winding, makes first to lead
Body frame 1 and the second conductor frame 2 are in depth saturation state, and especially lap is close to space permeability, to make to be serially connected with line
4 reactance of exchange winding in road is equivalent to hollow reactance.Exchange winding 4 is installed on the weight of the first conductor frame 1 and the second conductor frame 2
Folded part, and be serially connected in alternating current circuit, when an error occurs, DC power supply 5 is quickly cut off by dc switch 6, to make
First conductor frame 1 and the second conductor frame 2 are in unsaturated state, and the reactance being serially connected in alternating current circuit increases, and play effective
Metering function.
Further, excitation current-limiting circuit further includes the dead resistance 7 for consuming the magnetic energy of direct current winding 3, consumption electricity
The part in parallel that resistance 7 is composed in series with DC power supply 5 and dc switch 6.It, can be disconnected in DC power supply 5 by adding dead resistance 7
The magnetic energy in direct current winding 3 is rapidly consumed after opening, avoids remanence that from capable of bringing danger.
In another embodiment of the invention, direct current winding 3 is in series with filter 8.It is connected by preferred direct current winding 3
There is filter 8, it is possible to prevente effectively from adverse effect of the exchange winding 4 to DC circuit.
In order to optimize the using effect of filter 8 in above-described embodiment, filter 8 is specially resistance, inductance, capacitor
One of or a variety of combinations.It is specially one of resistance, inductance, capacitor or a variety of groups by preferred filter 8
It closes, can be reasonably selected according to specific complicated wave form, effectively filter corresponding bad waveform.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (6)
1. a kind of excitation current-limiting circuit, which is characterized in that including the first conductor frame (1) disposed in parallel and the second conductor frame (2),
The left frame of the first conductor frame (1) and the left frame of the second conductor frame (2) are perpendicular to the first conductor frame (1)
It is overlapped on the direction of place plane；
It further include the straight of the left frame for left frame and the second conductor frame (2) for being wound in the first conductor frame (1) respectively
It flows winding (3), winding arrangement form is identical, and the direct current winding (3) is all connected to include DC power supply (5) and dc switch
It (6) further include the left frame for left frame and the second conductor frame (2) for being wound in the first conductor frame (1) in circuit
Exchange winding (4), the exchange winding (4) is connected to external communication circuit.
2. excitation current-limiting circuit according to claim 1, which is characterized in that the left frame of the first conductor frame (1) and
The left frame of the second conductor frame (2) is fixedly connected by sleeve (9).
3. excitation current-limiting circuit according to claim 2, which is characterized in that the first conductor frame (1) and described second
Conductor frame (2) is specially the identical silicon steel core conductor frame of specification.
4. excitation current-limiting circuit according to claim 1, which is characterized in that further include for consuming the direct current winding
(3) dead resistance (7) of magnetic energy, the dead resistance (7) are connected with the DC power supply (5) and the dc switch (6)
The part in parallel of composition.
5. excitation current-limiting circuit according to claim 4, which is characterized in that the direct current winding (3) is in series with filtering dress
Set (8).
6. excitation current-limiting circuit according to claim 5, which is characterized in that the filter (8) is specially resistance, electricity
One of sense, capacitor or a variety of combinations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610657206.0A CN106129981B (en) | 2016-08-11 | 2016-08-11 | A kind of excitation current limiter and excitation current-limiting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610657206.0A CN106129981B (en) | 2016-08-11 | 2016-08-11 | A kind of excitation current limiter and excitation current-limiting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106129981A CN106129981A (en) | 2016-11-16 |
| CN106129981B true CN106129981B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610657206.0A Active CN106129981B (en) | 2016-08-11 | 2016-08-11 | A kind of excitation current limiter and excitation current-limiting circuit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107482601B (en) * | 2017-08-24 | 2019-04-26 | 广东电网有限责任公司电力科学研究院 | A kind of machinery rotating type restrictor apparatus |
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| CN101506918A (en) * | 2006-08-30 | 2009-08-12 | Abb研究有限公司 | A device for suppressing high frequency current or/and voltage components |
| CN202424148U (en) * | 2011-12-23 | 2012-09-05 | 特变电工沈阳变压器集团有限公司 | Normal conductor direct current coil-based saturated core fault current limiter |
| CN104836216A (en) * | 2015-05-29 | 2015-08-12 | 东南大学 | Saturated iron core type fault current limiter |
| CN205921374U (en) * | 2016-08-11 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | Excitation current limiter and excitation current -limiting circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202905387U (en) * | 2012-09-12 | 2013-04-24 | 北京云电英纳超导电缆有限公司 | Novel compact type iron core structure |
| DE102014206469A1 (en) * | 2014-04-03 | 2015-10-08 | SUMIDA Components & Modules GmbH | THROTTLE AND THROTTLE CORE |
-
2016
- 2016-08-11 CN CN201610657206.0A patent/CN106129981B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506918A (en) * | 2006-08-30 | 2009-08-12 | Abb研究有限公司 | A device for suppressing high frequency current or/and voltage components |
| CN202424148U (en) * | 2011-12-23 | 2012-09-05 | 特变电工沈阳变压器集团有限公司 | Normal conductor direct current coil-based saturated core fault current limiter |
| CN104836216A (en) * | 2015-05-29 | 2015-08-12 | 东南大学 | Saturated iron core type fault current limiter |
| CN205921374U (en) * | 2016-08-11 | 2017-02-01 | 广东电网有限责任公司电力科学研究院 | Excitation current limiter and excitation current -limiting circuit |
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| CN106129981A (en) | 2016-11-16 |
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